A reliable configuration of electromagnetic interactions for antenna design can yield an effective Microstrip patch (MsP) antenna. During its design, the antenna arrays involve issues with parameters (i.e., space, dimension, shape) adjustment. This problem can be tackled with an analytical approach which can help to bring better idea to design the antenna aaray. However, the realistic designs of antenna array are quite expensive while extracting computational accuracy. Thus, to have low cost computational accuracy various meta-heuristic (generic algorithm, partical swarm optimizarion) approaches are used and are considered as effective one in handling the pattern synthesis problems. Howeever, the use of meta-heuristic approaches demands thousands of functions to analyze the antenna design. This manuscript introduces an analytical approach for MsP antenna desing using MATLAB that brings optimization in handling the side lobes and optimizing the reflection as well as radiation responses. The outcomes of the design were analyzed with respect to reflection, radiation coefficients, side lobes and found effective at 10GHz as per computational cost is concern.
Enhancing the Radiation Pattern of Phase Array Antenna Using Particle Swarm O...IOSR Journals
The document describes a study that uses particle swarm optimization to enhance the radiation pattern of a phase array antenna by minimizing sidelobe levels. It first provides background on issues with high sidelobes in phase array antennas, such as power losses and interference. It then summarizes previous research using techniques like genetic algorithms for antenna array optimization. The study models the radiation pattern of linear arrays with different element numbers and calculates gain, finding that gain increases with more elements. However, sidelobe levels also increase relatively. Therefore, the study proposes using particle swarm optimization to optimize current excitation and control sidelobe levels while maintaining a narrow beamwidth.
IRJET- Design and Simulation of Mm Wave Sierpinski Antenna Loaded with Unipla...IRJET Journal
The document describes the design and simulation of a Sierpinski fractal antenna loaded with an electromagnetic band gap (EBG) structure for 5G applications in the millimeter wave bands. The Sierpinski fractal antenna achieves multi-band operation at 29.05 GHz, 35.75 GHz, and 41 GHz but has low gain. An optimized unipolar EBG unit cell is proposed to load onto the antenna for gain enhancement. Simulation results show the EBG-loaded antenna achieves peak gains of 5.37 dBi at 28 GHz and 14.37 dBi at 68 GHz, improving on the low gain of the unloaded antenna. The compact, multi-band antenna design makes it a suitable
Analysis of Metamaterial Based Microstrip Array Antennaijceronline
Metamaterials have been intensively researched due to their peculiar features such as negative permittivity and/or permeability and ultra-refraction phenomenon. To satisfy the demand of commonly used wireless communication systems, an antenna which can operate at higher frequencies and enhanced characteristics are desirable. The arrangement of all elements is done that they provide an improvement in bandwidth, directivity return loss etc. The frequency response of a metamaterial can be tailored by varying its characteristics. A new metamaterial structure using square and ring split ring resonator is proposed. Using this metamaterial structure, a microstrip patch antenna is designed with enhanced characteristics such as reduction in return lossfrom-20dB to -36dB with tunability is achieved.
Design and Analysis of Microstrip Antenna for CDMA Systems CommunicationIOSR Journals
This paper proposes a newly designed microstrip patch antennas (MSA) for wireless application
(CDMA Systems). The designed single antenna E-shaped patch antenna. Two parallel slots are in corporated
into the patch of a microstrip antenna to expand it bandwidth, and designed antenna operates in the frequency
range of 1.85 to 1.99 GHz. The antenna is designed using air as a dielectric substrate between the ground plane
and substrate patch antenna. IE3D is a full-wave electromagnetic simulator based on the method of moments
(MoM) technique. It has been widely used in the design of MICs, RFICs, patch antennas, wire antennas, and
other RF/wireless antennas. It can be used to calculate and plot the S parameters, VSWR, current distributions
as well as the radiation patterns. The results obtained for each patch were 2D and 3D view of patch, Directivity,
Gain, beam width and other such parameters, true and mapped 3D radiation pattern, and 2D polar radiation
pattern. The antenna successfully achieves the exhibit a broad impedance bandwidth of 27 % (at VSWR < 2)
with respect to the center frequency of 1.9 GHz is designed, fabricated, and finally measured on Spectrum
analyzer. The radiation pattern and directivity are also presented.. Gain maximum achievable is 3 dBi and good
return loss (S11 parameters) of -30 dB is achieved along with broadside radiation pattern.
Extended-Bandwidth Microstrip Circular Patch Antenna for Dual Band Applications IJECEIAES
This paper presents a new wideband microstrip circular patch antenna (MCPA) fed by proximity-coupled line with double-stub matching to achieve dual-band operation. Bandwidth extension is achieved by exciting higherorder modes in the circular radiating patch, and using two stubs to achieve adequate matching across the obtained two bands. The characteristics of the antenna such as reflection coefficient, impedance bandwidth, gain and radiation pattern are investigated and optimized through parametric studies using the CST Microwave Studio Suite. The antenna achieved a large relative bandwidth of 45.16% at the upper band, while the lower one has 10.3% relative bandwidth. The maximum achieved gain of the dual-band antenna in the 5.8GHz band is 4.62dBi while it is 4.85dBi in the upper band. The antenna has an overall size of 30×30×3.2mm3 corresponding to 0.58λ × 0.58 λ × 0.062 λ at the lower band of 5.8 GHz. The proposed antenna should be useful for WLAN and X-band communication systems.
The document compares the radiation patterns of thinned and thickened linear antenna arrays. It finds that thickening reduces the null to null beamwidth without deteriorating sidelobe levels, while thinning raises sidelobe levels and beamwidth and can introduce grating lobes if not done properly. Tables show sidelobe levels and beamwidths decrease as array size increases for both thinned and thickened arrays, but thickened arrays have better performance. Patterns are evaluated for different array sizes and element amplitudes and spacings are listed for selected thinned and thickened arrays.
The document describes a multiband microstrip antenna designed for WLAN applications. The antenna is printed on photographic paper substrate using inkjet printing. It has a rectangular patch with two U-slots that provide three resonant bands between 2.1-2.95 GHz, 3.35-3.54 GHz, and 5.04-6.0 GHz. Two additional parasitic elements are added to improve bandwidth. Simulated and measured results show the antenna meets bandwidth and gain requirements for applications such as Bluetooth, Wi-Fi, Zigbee and WLAN.
Self affine rectangular fractal antenna with uc-ebg structure-2IAEME Publication
This document discusses the design and simulation of a self-affine rectangular fractal antenna with electromagnetic bandgap (EBG) structures. The antenna is designed on a substrate with a dielectric constant of 4.4 and thickness of 1.6mm. The basic rectangular patch antenna is modified through two iterations of fractal geometry to produce a multiband antenna. EBG structures are added surrounding the antenna. Simulation results show the antenna resonating at multiple frequencies with increased iteration, providing bandwidth enhancement and size reduction compared to the basic patch antenna. Good agreement is achieved between simulated and experimentally measured results.
Enhancing the Radiation Pattern of Phase Array Antenna Using Particle Swarm O...IOSR Journals
The document describes a study that uses particle swarm optimization to enhance the radiation pattern of a phase array antenna by minimizing sidelobe levels. It first provides background on issues with high sidelobes in phase array antennas, such as power losses and interference. It then summarizes previous research using techniques like genetic algorithms for antenna array optimization. The study models the radiation pattern of linear arrays with different element numbers and calculates gain, finding that gain increases with more elements. However, sidelobe levels also increase relatively. Therefore, the study proposes using particle swarm optimization to optimize current excitation and control sidelobe levels while maintaining a narrow beamwidth.
IRJET- Design and Simulation of Mm Wave Sierpinski Antenna Loaded with Unipla...IRJET Journal
The document describes the design and simulation of a Sierpinski fractal antenna loaded with an electromagnetic band gap (EBG) structure for 5G applications in the millimeter wave bands. The Sierpinski fractal antenna achieves multi-band operation at 29.05 GHz, 35.75 GHz, and 41 GHz but has low gain. An optimized unipolar EBG unit cell is proposed to load onto the antenna for gain enhancement. Simulation results show the EBG-loaded antenna achieves peak gains of 5.37 dBi at 28 GHz and 14.37 dBi at 68 GHz, improving on the low gain of the unloaded antenna. The compact, multi-band antenna design makes it a suitable
Analysis of Metamaterial Based Microstrip Array Antennaijceronline
Metamaterials have been intensively researched due to their peculiar features such as negative permittivity and/or permeability and ultra-refraction phenomenon. To satisfy the demand of commonly used wireless communication systems, an antenna which can operate at higher frequencies and enhanced characteristics are desirable. The arrangement of all elements is done that they provide an improvement in bandwidth, directivity return loss etc. The frequency response of a metamaterial can be tailored by varying its characteristics. A new metamaterial structure using square and ring split ring resonator is proposed. Using this metamaterial structure, a microstrip patch antenna is designed with enhanced characteristics such as reduction in return lossfrom-20dB to -36dB with tunability is achieved.
Design and Analysis of Microstrip Antenna for CDMA Systems CommunicationIOSR Journals
This paper proposes a newly designed microstrip patch antennas (MSA) for wireless application
(CDMA Systems). The designed single antenna E-shaped patch antenna. Two parallel slots are in corporated
into the patch of a microstrip antenna to expand it bandwidth, and designed antenna operates in the frequency
range of 1.85 to 1.99 GHz. The antenna is designed using air as a dielectric substrate between the ground plane
and substrate patch antenna. IE3D is a full-wave electromagnetic simulator based on the method of moments
(MoM) technique. It has been widely used in the design of MICs, RFICs, patch antennas, wire antennas, and
other RF/wireless antennas. It can be used to calculate and plot the S parameters, VSWR, current distributions
as well as the radiation patterns. The results obtained for each patch were 2D and 3D view of patch, Directivity,
Gain, beam width and other such parameters, true and mapped 3D radiation pattern, and 2D polar radiation
pattern. The antenna successfully achieves the exhibit a broad impedance bandwidth of 27 % (at VSWR < 2)
with respect to the center frequency of 1.9 GHz is designed, fabricated, and finally measured on Spectrum
analyzer. The radiation pattern and directivity are also presented.. Gain maximum achievable is 3 dBi and good
return loss (S11 parameters) of -30 dB is achieved along with broadside radiation pattern.
Extended-Bandwidth Microstrip Circular Patch Antenna for Dual Band Applications IJECEIAES
This paper presents a new wideband microstrip circular patch antenna (MCPA) fed by proximity-coupled line with double-stub matching to achieve dual-band operation. Bandwidth extension is achieved by exciting higherorder modes in the circular radiating patch, and using two stubs to achieve adequate matching across the obtained two bands. The characteristics of the antenna such as reflection coefficient, impedance bandwidth, gain and radiation pattern are investigated and optimized through parametric studies using the CST Microwave Studio Suite. The antenna achieved a large relative bandwidth of 45.16% at the upper band, while the lower one has 10.3% relative bandwidth. The maximum achieved gain of the dual-band antenna in the 5.8GHz band is 4.62dBi while it is 4.85dBi in the upper band. The antenna has an overall size of 30×30×3.2mm3 corresponding to 0.58λ × 0.58 λ × 0.062 λ at the lower band of 5.8 GHz. The proposed antenna should be useful for WLAN and X-band communication systems.
The document compares the radiation patterns of thinned and thickened linear antenna arrays. It finds that thickening reduces the null to null beamwidth without deteriorating sidelobe levels, while thinning raises sidelobe levels and beamwidth and can introduce grating lobes if not done properly. Tables show sidelobe levels and beamwidths decrease as array size increases for both thinned and thickened arrays, but thickened arrays have better performance. Patterns are evaluated for different array sizes and element amplitudes and spacings are listed for selected thinned and thickened arrays.
The document describes a multiband microstrip antenna designed for WLAN applications. The antenna is printed on photographic paper substrate using inkjet printing. It has a rectangular patch with two U-slots that provide three resonant bands between 2.1-2.95 GHz, 3.35-3.54 GHz, and 5.04-6.0 GHz. Two additional parasitic elements are added to improve bandwidth. Simulated and measured results show the antenna meets bandwidth and gain requirements for applications such as Bluetooth, Wi-Fi, Zigbee and WLAN.
Self affine rectangular fractal antenna with uc-ebg structure-2IAEME Publication
This document discusses the design and simulation of a self-affine rectangular fractal antenna with electromagnetic bandgap (EBG) structures. The antenna is designed on a substrate with a dielectric constant of 4.4 and thickness of 1.6mm. The basic rectangular patch antenna is modified through two iterations of fractal geometry to produce a multiband antenna. EBG structures are added surrounding the antenna. Simulation results show the antenna resonating at multiple frequencies with increased iteration, providing bandwidth enhancement and size reduction compared to the basic patch antenna. Good agreement is achieved between simulated and experimentally measured results.
IRJET- Design of Microstrip Patch Antenna for Smart Antenna ApplicationsIRJET Journal
This document describes the design and simulation of rectangular and circular microstrip patch antennas for smart antenna applications. Key points:
- Rectangular and circular patch antennas were designed and simulated in MATLAB to analyze parameters like resonant frequency, bandwidth, radiation pattern.
- A bipolar mechanism was proposed to increase efficiency and gain by inducing more surface currents on the patch. This reduces losses and improves the radiation pattern.
- Simulation results showed the frequency response and radiation patterns of the rectangular and circular patch antennas matched expected parameters.
- Smart antennas using adaptive beamforming techniques were discussed as promising for future wireless networks by improving spectrum efficiency and network optimization.
Antenna array design with rectangular ring slot for 5G technologyTELKOMNIKA JOURNAL
A patch antenna with rectangular-shaped ring slot that fed by a coaxial probe is proposed in this
article as the single element for planar patch array antenna design to meet the requirement of multiple
input multiple output (MIMO) in fifth generation (5G) technology. Initially, the single antenna element is
designed at three different center frequencies of 0.85, 1.9 and 2.6 GHz to cover the mobile operating
frequency of 0.8, 0.85, 0.9, 1.8, 2.1 and 2.6 GHz, which considering the proposed 5G spectrum below than
6 GHz. The rectangular-shaped ring slot is introduced to the patch antenna with the partial ground plane to
widen the bandwidth performance. The designed single element is then arranged to design planar arrays
of 2x2. Each of elements in the planar array is fed by a coaxial probe. The designs are utilizing a
high-performance substrate, Rogers 6010LM.
Dielectric Resonator Reflectarray Antenna Unit Cells for 5G Applications IJECEIAES
This paper presents an investigation for the performance comparison of three different unit cell configurations operating at 26 GHz for 5G applications. The unit cells are cross shape dielectric resonator, cross microstrip patch and cross hybrid dielectric resonator. Verification of the comparison has been done by simulations using commercial Computer Simulation Technology Microwave Studio (CST MWS). The simulated results for reflection phase, slope variation, reflection loss and 10% bandwidth were analyzed and compared. The results indicate that the optimum configuration to be deployed for the reflectarray’s unit element in order to fulfill the 5G requirements of a wide bandwidth is the cross hybrid DRA. This configuration is a combination of cross DRA with cross microstrip patch as the parasitic element in order to tune the phase and provide a wide phase range with smooth variation slope. Cross hybrid DRA provided a wide phase range of 520° with 0.77 dB loss and 10% bandwidth of 160 MHz.
Design and Analysis of Wideband Microstip Patch Antenna Employing EBG and Par...IOSR Journals
This document summarizes the design and analysis of a wideband microstrip patch antenna employing EBG structures and a partial ground plane. Initially, a simple patch antenna was designed as a baseline, then various modifications were made, including cutting an H-slot in the patch, cutting the patch into a star shape, adding EBG structures, and adding a DGS structure. The proposed antenna design uses EBG structures within the patch and a partial ground plane. Simulation results show it resonates at four frequencies between 2.5-12.9 GHz with return losses between -13.96 to -19.0 dB, indicating a wide bandwidth. The antenna also has an omni-directional radiation pattern and gain of 6.33
In this paper we are interested to calculate the resonant frequency of rectangular patch antenna using artificial neural networks based on the multilayered perceptrons. The artificial neural networks built, transforms the inputs which are, the width of the patch W, the length of the patch L, the thickness of the substrate h and the dielectric permittivity ε_r to the resonant frequency fr which is an important parameter to design a microstrip patch antenna.The proposed method based on artificial neural networks is compared to some analytical methods using some statistical criteria. The obtained results demonstrate that artificial neural networks are more adequate to achieve the purpose than the other methods and present a good argument with the experimental results available in the literature. Hence, the artificial neural networks can be used by researchers to predict the resonant frequency of a rectangular patch antenna knowing length (L), width (W), thickness (h) and dielectric permittivity 〖(ε〗_r) with a good accuracy.
Mimo and smart antennas july 2013 finalPraveen Kumar
The document discusses MIMO techniques and antenna configurations used in LTE networks. It describes how LTE supports 1-8 transmit antennas at the base station and 2-8 receive antennas at the UE. The most common configuration is 4x2 MIMO where the base station uses 4 transmit antennas and the UE uses 2 receive antennas. MIMO can increase peak data rates through spatial multiplexing but works best for users with high SINR close to the base station. Open loop MIMO is used for high mobility while closed loop MIMO relies on channel feedback for better performance but only works well in low mobility environments.
5G Fixed Beam Switching on Microstrip Patch Antenna IJECEIAES
5G technology is using millimeter-wave band to improve the wireless communication system. However, narrow transmitter and receiver beams have caused the beam coverage area to be limited. Due to propagation limitations of mm wave band, beam forming technology with multi-beam based communication system, has been focused to overcome the problem. In this letter, a fixed beam switching method is introduced. By changing the switches, four different configurations of patch array antennas are designed to investigate their performances in terms of radiation patterns, beam forming angle, gain, half-power bandwidth and impedance bandwidth at 28 GHz operating frequency for 5G application. Mircostrip antenna is preferred due to its low profile, easy in feeding and array configurations. Three different beam directions had been formed at -15°, 0°, and 15° with half-power bandwidth of range 45˚ to 50˚.
Design of switched beam planer arrays using the method of genetic alograthim marwaeng
The document describes the use of genetic algorithms to design switched beam planar antenna arrays. Specifically, genetic algorithms are used to determine the element positions, radii, and excitation amplitudes and phases to produce radiation patterns with main beams pointing in specific directions. Both arbitrary element positioning and circular arrays are considered. The genetic algorithm is able to design arrays with 4 to 8 radiation patterns covering the x-y plane or a portion of it.
This document summarizes the design and simulation of an octal stepped microstrip patch antenna with a slotted section for wireless communications. The antenna was designed to operate at 4.52 GHz within the C-band range of 4-8 GHz, which is useful for satellite communications. The antenna structure and various design parameters were modeled and optimized using IE3D simulation software. The simulated results showed that Design 3 achieved the best impedance matching with a bandwidth of 3.26% at the target frequency. The proposed antenna design was concluded to be suitable for satellite communication and television applications due to its C-band operating range and optimized performance metrics obtained from simulation.
Application of MUSIC Algorithm for Adaptive Beamforming Smart AntennaIRJET Journal
This document discusses direction of arrival (DOA) estimation using the MUSIC algorithm. It begins with an abstract that introduces DOA estimation and the MUSIC algorithm. It then provides background on smart antennas and switched beam arrays. The document presents the system model and mathematical formulation for signal propagation and antenna array output. It then describes the MUSIC algorithm, which uses eigendecomposition of the covariance matrix to estimate DOA. The algorithm is able to simultaneously measure multiple signals with high precision and resolution. The document concludes by discussing implementation of the algorithm using a 4-element antenna array to estimate DOA.
Radiation performance enhancement of an ultra wide band antenna using metamat...IJECEIAES
In this paper, a metamaterial structure based on frequency selective surface (FSS) cell is proposed to achieve an isotropic band-pass filtering response. This filter consists of a planar layer formed by a 3×3 metamaterials cell array with transmittive filtering behavior at 3.5 GHz. This design with 45×45 mm dimension is then integrated in close proximity at distance of 10 mm with an ultra wide band (UWB) antenna to enhance it’ s performances around a 3.5 GHz operating frequency. Simulation results ensure that filter geometry provides the advantage of the angular stability up to to 45 and also polarization modes independency (transverse electric (TE) and transverse magnetic (TM)). In addition, enhancement in antenna radiation pattern characteristics is enhanced especially when the FSS filter layer is integrated at a very close distance from the radiator. Moreover, antenna gain was improved to 3.22 dBi, adaptation of antenna port (S 11 ) was increased to -53.26 dB and antenna bandwidth reduction to 1.7 GHz is also detected. All these performances make the proposed design as a good choice used to shield signals in UWB wireless applications especially for connected object in 5G.
Design Study of a Miniaturized Multi-layered Antenna-in-package for 2.4 GHZ ...IJECEIAES
This paper proposes a novel miniaturization technique to enhance the radiation properties of small multi-layer patch antenna used in packaged circuits. The multilayered antenna design is composed of three layers with different shapes. An enhancement on the radiation properties has been obtained by optimizing the geometry of the radiated element and the parasitic conductor of the middle layer. The whole design has been implemented on the FR4 substrate with dielectric constant of 4.4, thickness of 1.6 mm and Copper thickness of 5 m. The first layer is a driven element while second and the third layer are parasitic patch elements. The optimized multilayer antenna has a very small size of . Considering the small size of the antenna, a detailed study of the parameter affecting the radiation has been considered to force the antenna to operate at 2.4 GHz band. Miniaturization techniques based on the current distribution have been also taken into account to shift down the resonant frequency and reduces more and more the antenna size at the designed operating frequency. The miniaturized antenna maintains performant radiation characteristics in terms of reflexion coefficient, bandwidth and directivity. All developed antennas are simulated using the commercial Electromagnetic CST Microwave Studio software. Achieved results demonstrate a good performance with low cost and compact size
Sierpinski carpet fractal monopole antenna for ultra-wideband applications IJECEIAES
This summary provides an overview of a document describing a Sierpinski carpet fractal monopole antenna (SCFMA) designed for ultra-wideband applications:
1) The SCFMA is developed up to two iterations to maximize bandwidth by utilizing the space-filling and self-similar properties of the Sierpinski carpet fractal.
2) The monopole patch size is optimized to minimize the overall antenna area.
3) The SCFMA achieves bandwidth ranges of 2.6-4.0 GHz, 2.5-4.3 GHz, and 2.4-4.4 GHz for the base case, first, and second iterations, respectively, on an FR4
Design of wide band microstrip array antenna using direct coupled techniqueeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Directly coupled microstrip array antennas for wideband applicationeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A Novel Geometry of Multiband Planar Antenna for Wireless Applicationsijtsrd
The compact multiband antenna is of practical interest for the fast growing modern communication industry. In this regard radiation performance of modified rectangular multiband antenna, designed on FR 4 substrate is proposed in this paper. The geometry is operating at three different frequencies in the considered range of 4 6 GHz and offers excellent matching with the feedline for each resonant frequency. Parul Pathak | P. K. Singhal "A Novel Geometry of Multiband Planar Antenna for Wireless Applications" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-1 , December 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29797.pdf Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/29797/a-novel-geometry-of-multiband-planar-antenna-for-wireless-applications/parul-pathak
Backtracking Search Optimization for Collaborative Beamforming in Wireless Se...TELKOMNIKA JOURNAL
Due to energy limitation and constraint in communication capabilities, the undesirable high
battery power consumption has become one of the major issues in wireless sensor network (WSN).
Therefore, a collaborative beamforming (CB) method was introduced with the aim to improve the radiation
beampattern in order to compensate the power consumption. A CB is a technique which can increase the
sensor node gain and performance by aiming at the desired objectives through intelligent capabilities. The
sensor nodes were located randomly in WSN environment. The nodes were designed to cooperate among
each other and act as a collaborative antenna array. The configuration of the collaborative nodes was
modeled in circular array formation. The position of array nodes was determined by obtaining the optimum
parameters pertaining to the antenna array which implemented by using Backtracking Search Optimization
Algorithm (BSA). The parameter considered in the project was the side-lobe level minimization. It was
observed that, the suppression of side-lobe level for BSA was better compared to the radiation
beampattern obtained for conventional uniform circular array.
Time Domain Modelling of Optical Add-drop filter based on Microcavity Ring Re...iosrjce
IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of electronics and communication engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electronics and communication engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
This document summarizes the design and analysis of a wideband microstrip patch antenna employing EBG structures and a partial ground plane. Initially, a simple patch antenna was designed as a baseline, then various modifications were made, including cutting an H-slot in the patch, cutting the patch into a star shape, adding EBG structures, and adding a DGS structure. The proposed antenna design uses EBG structures within the patch and a partial ground plane. Simulation results show it resonates at four frequencies between 2.5-12.9 GHz with return losses between -13.96 to -19.0 dB, indicating a wide bandwidth. The antenna also has an omni-directional radiation pattern and gain of 6.33
MINIATURISATION OF PATCH ANTENNA USING NOVEL FRACTAL GEOMETRYIAEME Publication
In the Field of low profile antennamicro strip patch antennas have attracted many researchers due to small sizeand low cost of fabrication. One of trending member of new designs is Fractalantenna. Fractal shapes are recursive/repetitive self-similar geometries, dueto this self-similarity they can provide high gain, multiband, widebandsolutions and design miniature antenna. Fractal shapes are widely used incomputing, analysis and design; recent trends suggest positive outcomes ofusing fractal shapes in electromagnetics and communication system. In thispaper Jerusalem cube fractal shape is introduced in probe fed conventionalpatch antenna for L1 band. A dual band antenna resonating at 1.41 GHz (L) and3.37 (S) GHz, band is constructed using said fractal shape.
In the recent years the improvement in communication systems requires the development of low cost, minimal weight, low profile antennas that are capable of maintaining high performance over a wide spectrum of frequency. This technological trend has focused much effort into the design of a Micro strip patch antenna. In this paper, we designed a rectangular micro strip patch antenna at 3.8GHz and study the effect of antenna dimension Length (L), Width (W), substrate parameter relative dielectric constant (€r ) substrate thickness (h) and radiation pattern using Ansoft HFSS. It even describes the increasing effect of Gain and Directivity. The Proposed antenna also presents the detail steps of designing the micro strip antenna and the simulated result. The feeding technique used to feed the antenna is coaxial probe feeding technique. Micro strip patch antenna is used in many fields like Antenna and mobile communication, Filters, PCB board model and EMC and EMI. Rogers RT/duroid 5880 (tm) substrate with a dielectric constant of approximately 2.2, is a feed and has a partial ground plane. The gain and directivity of the designed antenna is 7.7082 dB and 7.76882dB respectively.
IRJET- Design of Microstrip Patch Antenna for Smart Antenna ApplicationsIRJET Journal
This document describes the design and simulation of rectangular and circular microstrip patch antennas for smart antenna applications. Key points:
- Rectangular and circular patch antennas were designed and simulated in MATLAB to analyze parameters like resonant frequency, bandwidth, radiation pattern.
- A bipolar mechanism was proposed to increase efficiency and gain by inducing more surface currents on the patch. This reduces losses and improves the radiation pattern.
- Simulation results showed the frequency response and radiation patterns of the rectangular and circular patch antennas matched expected parameters.
- Smart antennas using adaptive beamforming techniques were discussed as promising for future wireless networks by improving spectrum efficiency and network optimization.
Antenna array design with rectangular ring slot for 5G technologyTELKOMNIKA JOURNAL
A patch antenna with rectangular-shaped ring slot that fed by a coaxial probe is proposed in this
article as the single element for planar patch array antenna design to meet the requirement of multiple
input multiple output (MIMO) in fifth generation (5G) technology. Initially, the single antenna element is
designed at three different center frequencies of 0.85, 1.9 and 2.6 GHz to cover the mobile operating
frequency of 0.8, 0.85, 0.9, 1.8, 2.1 and 2.6 GHz, which considering the proposed 5G spectrum below than
6 GHz. The rectangular-shaped ring slot is introduced to the patch antenna with the partial ground plane to
widen the bandwidth performance. The designed single element is then arranged to design planar arrays
of 2x2. Each of elements in the planar array is fed by a coaxial probe. The designs are utilizing a
high-performance substrate, Rogers 6010LM.
Dielectric Resonator Reflectarray Antenna Unit Cells for 5G Applications IJECEIAES
This paper presents an investigation for the performance comparison of three different unit cell configurations operating at 26 GHz for 5G applications. The unit cells are cross shape dielectric resonator, cross microstrip patch and cross hybrid dielectric resonator. Verification of the comparison has been done by simulations using commercial Computer Simulation Technology Microwave Studio (CST MWS). The simulated results for reflection phase, slope variation, reflection loss and 10% bandwidth were analyzed and compared. The results indicate that the optimum configuration to be deployed for the reflectarray’s unit element in order to fulfill the 5G requirements of a wide bandwidth is the cross hybrid DRA. This configuration is a combination of cross DRA with cross microstrip patch as the parasitic element in order to tune the phase and provide a wide phase range with smooth variation slope. Cross hybrid DRA provided a wide phase range of 520° with 0.77 dB loss and 10% bandwidth of 160 MHz.
Design and Analysis of Wideband Microstip Patch Antenna Employing EBG and Par...IOSR Journals
This document summarizes the design and analysis of a wideband microstrip patch antenna employing EBG structures and a partial ground plane. Initially, a simple patch antenna was designed as a baseline, then various modifications were made, including cutting an H-slot in the patch, cutting the patch into a star shape, adding EBG structures, and adding a DGS structure. The proposed antenna design uses EBG structures within the patch and a partial ground plane. Simulation results show it resonates at four frequencies between 2.5-12.9 GHz with return losses between -13.96 to -19.0 dB, indicating a wide bandwidth. The antenna also has an omni-directional radiation pattern and gain of 6.33
In this paper we are interested to calculate the resonant frequency of rectangular patch antenna using artificial neural networks based on the multilayered perceptrons. The artificial neural networks built, transforms the inputs which are, the width of the patch W, the length of the patch L, the thickness of the substrate h and the dielectric permittivity ε_r to the resonant frequency fr which is an important parameter to design a microstrip patch antenna.The proposed method based on artificial neural networks is compared to some analytical methods using some statistical criteria. The obtained results demonstrate that artificial neural networks are more adequate to achieve the purpose than the other methods and present a good argument with the experimental results available in the literature. Hence, the artificial neural networks can be used by researchers to predict the resonant frequency of a rectangular patch antenna knowing length (L), width (W), thickness (h) and dielectric permittivity 〖(ε〗_r) with a good accuracy.
Mimo and smart antennas july 2013 finalPraveen Kumar
The document discusses MIMO techniques and antenna configurations used in LTE networks. It describes how LTE supports 1-8 transmit antennas at the base station and 2-8 receive antennas at the UE. The most common configuration is 4x2 MIMO where the base station uses 4 transmit antennas and the UE uses 2 receive antennas. MIMO can increase peak data rates through spatial multiplexing but works best for users with high SINR close to the base station. Open loop MIMO is used for high mobility while closed loop MIMO relies on channel feedback for better performance but only works well in low mobility environments.
5G Fixed Beam Switching on Microstrip Patch Antenna IJECEIAES
5G technology is using millimeter-wave band to improve the wireless communication system. However, narrow transmitter and receiver beams have caused the beam coverage area to be limited. Due to propagation limitations of mm wave band, beam forming technology with multi-beam based communication system, has been focused to overcome the problem. In this letter, a fixed beam switching method is introduced. By changing the switches, four different configurations of patch array antennas are designed to investigate their performances in terms of radiation patterns, beam forming angle, gain, half-power bandwidth and impedance bandwidth at 28 GHz operating frequency for 5G application. Mircostrip antenna is preferred due to its low profile, easy in feeding and array configurations. Three different beam directions had been formed at -15°, 0°, and 15° with half-power bandwidth of range 45˚ to 50˚.
Design of switched beam planer arrays using the method of genetic alograthim marwaeng
The document describes the use of genetic algorithms to design switched beam planar antenna arrays. Specifically, genetic algorithms are used to determine the element positions, radii, and excitation amplitudes and phases to produce radiation patterns with main beams pointing in specific directions. Both arbitrary element positioning and circular arrays are considered. The genetic algorithm is able to design arrays with 4 to 8 radiation patterns covering the x-y plane or a portion of it.
This document summarizes the design and simulation of an octal stepped microstrip patch antenna with a slotted section for wireless communications. The antenna was designed to operate at 4.52 GHz within the C-band range of 4-8 GHz, which is useful for satellite communications. The antenna structure and various design parameters were modeled and optimized using IE3D simulation software. The simulated results showed that Design 3 achieved the best impedance matching with a bandwidth of 3.26% at the target frequency. The proposed antenna design was concluded to be suitable for satellite communication and television applications due to its C-band operating range and optimized performance metrics obtained from simulation.
Application of MUSIC Algorithm for Adaptive Beamforming Smart AntennaIRJET Journal
This document discusses direction of arrival (DOA) estimation using the MUSIC algorithm. It begins with an abstract that introduces DOA estimation and the MUSIC algorithm. It then provides background on smart antennas and switched beam arrays. The document presents the system model and mathematical formulation for signal propagation and antenna array output. It then describes the MUSIC algorithm, which uses eigendecomposition of the covariance matrix to estimate DOA. The algorithm is able to simultaneously measure multiple signals with high precision and resolution. The document concludes by discussing implementation of the algorithm using a 4-element antenna array to estimate DOA.
Radiation performance enhancement of an ultra wide band antenna using metamat...IJECEIAES
In this paper, a metamaterial structure based on frequency selective surface (FSS) cell is proposed to achieve an isotropic band-pass filtering response. This filter consists of a planar layer formed by a 3×3 metamaterials cell array with transmittive filtering behavior at 3.5 GHz. This design with 45×45 mm dimension is then integrated in close proximity at distance of 10 mm with an ultra wide band (UWB) antenna to enhance it’ s performances around a 3.5 GHz operating frequency. Simulation results ensure that filter geometry provides the advantage of the angular stability up to to 45 and also polarization modes independency (transverse electric (TE) and transverse magnetic (TM)). In addition, enhancement in antenna radiation pattern characteristics is enhanced especially when the FSS filter layer is integrated at a very close distance from the radiator. Moreover, antenna gain was improved to 3.22 dBi, adaptation of antenna port (S 11 ) was increased to -53.26 dB and antenna bandwidth reduction to 1.7 GHz is also detected. All these performances make the proposed design as a good choice used to shield signals in UWB wireless applications especially for connected object in 5G.
Design Study of a Miniaturized Multi-layered Antenna-in-package for 2.4 GHZ ...IJECEIAES
This paper proposes a novel miniaturization technique to enhance the radiation properties of small multi-layer patch antenna used in packaged circuits. The multilayered antenna design is composed of three layers with different shapes. An enhancement on the radiation properties has been obtained by optimizing the geometry of the radiated element and the parasitic conductor of the middle layer. The whole design has been implemented on the FR4 substrate with dielectric constant of 4.4, thickness of 1.6 mm and Copper thickness of 5 m. The first layer is a driven element while second and the third layer are parasitic patch elements. The optimized multilayer antenna has a very small size of . Considering the small size of the antenna, a detailed study of the parameter affecting the radiation has been considered to force the antenna to operate at 2.4 GHz band. Miniaturization techniques based on the current distribution have been also taken into account to shift down the resonant frequency and reduces more and more the antenna size at the designed operating frequency. The miniaturized antenna maintains performant radiation characteristics in terms of reflexion coefficient, bandwidth and directivity. All developed antennas are simulated using the commercial Electromagnetic CST Microwave Studio software. Achieved results demonstrate a good performance with low cost and compact size
Sierpinski carpet fractal monopole antenna for ultra-wideband applications IJECEIAES
This summary provides an overview of a document describing a Sierpinski carpet fractal monopole antenna (SCFMA) designed for ultra-wideband applications:
1) The SCFMA is developed up to two iterations to maximize bandwidth by utilizing the space-filling and self-similar properties of the Sierpinski carpet fractal.
2) The monopole patch size is optimized to minimize the overall antenna area.
3) The SCFMA achieves bandwidth ranges of 2.6-4.0 GHz, 2.5-4.3 GHz, and 2.4-4.4 GHz for the base case, first, and second iterations, respectively, on an FR4
Design of wide band microstrip array antenna using direct coupled techniqueeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Directly coupled microstrip array antennas for wideband applicationeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A Novel Geometry of Multiband Planar Antenna for Wireless Applicationsijtsrd
The compact multiband antenna is of practical interest for the fast growing modern communication industry. In this regard radiation performance of modified rectangular multiband antenna, designed on FR 4 substrate is proposed in this paper. The geometry is operating at three different frequencies in the considered range of 4 6 GHz and offers excellent matching with the feedline for each resonant frequency. Parul Pathak | P. K. Singhal "A Novel Geometry of Multiband Planar Antenna for Wireless Applications" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-1 , December 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29797.pdf Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/29797/a-novel-geometry-of-multiband-planar-antenna-for-wireless-applications/parul-pathak
Backtracking Search Optimization for Collaborative Beamforming in Wireless Se...TELKOMNIKA JOURNAL
Due to energy limitation and constraint in communication capabilities, the undesirable high
battery power consumption has become one of the major issues in wireless sensor network (WSN).
Therefore, a collaborative beamforming (CB) method was introduced with the aim to improve the radiation
beampattern in order to compensate the power consumption. A CB is a technique which can increase the
sensor node gain and performance by aiming at the desired objectives through intelligent capabilities. The
sensor nodes were located randomly in WSN environment. The nodes were designed to cooperate among
each other and act as a collaborative antenna array. The configuration of the collaborative nodes was
modeled in circular array formation. The position of array nodes was determined by obtaining the optimum
parameters pertaining to the antenna array which implemented by using Backtracking Search Optimization
Algorithm (BSA). The parameter considered in the project was the side-lobe level minimization. It was
observed that, the suppression of side-lobe level for BSA was better compared to the radiation
beampattern obtained for conventional uniform circular array.
Time Domain Modelling of Optical Add-drop filter based on Microcavity Ring Re...iosrjce
IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of electronics and communication engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electronics and communication engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
This document summarizes the design and analysis of a wideband microstrip patch antenna employing EBG structures and a partial ground plane. Initially, a simple patch antenna was designed as a baseline, then various modifications were made, including cutting an H-slot in the patch, cutting the patch into a star shape, adding EBG structures, and adding a DGS structure. The proposed antenna design uses EBG structures within the patch and a partial ground plane. Simulation results show it resonates at four frequencies between 2.5-12.9 GHz with return losses between -13.96 to -19.0 dB, indicating a wide bandwidth. The antenna also has an omni-directional radiation pattern and gain of 6.33
MINIATURISATION OF PATCH ANTENNA USING NOVEL FRACTAL GEOMETRYIAEME Publication
In the Field of low profile antennamicro strip patch antennas have attracted many researchers due to small sizeand low cost of fabrication. One of trending member of new designs is Fractalantenna. Fractal shapes are recursive/repetitive self-similar geometries, dueto this self-similarity they can provide high gain, multiband, widebandsolutions and design miniature antenna. Fractal shapes are widely used incomputing, analysis and design; recent trends suggest positive outcomes ofusing fractal shapes in electromagnetics and communication system. In thispaper Jerusalem cube fractal shape is introduced in probe fed conventionalpatch antenna for L1 band. A dual band antenna resonating at 1.41 GHz (L) and3.37 (S) GHz, band is constructed using said fractal shape.
In the recent years the improvement in communication systems requires the development of low cost, minimal weight, low profile antennas that are capable of maintaining high performance over a wide spectrum of frequency. This technological trend has focused much effort into the design of a Micro strip patch antenna. In this paper, we designed a rectangular micro strip patch antenna at 3.8GHz and study the effect of antenna dimension Length (L), Width (W), substrate parameter relative dielectric constant (€r ) substrate thickness (h) and radiation pattern using Ansoft HFSS. It even describes the increasing effect of Gain and Directivity. The Proposed antenna also presents the detail steps of designing the micro strip antenna and the simulated result. The feeding technique used to feed the antenna is coaxial probe feeding technique. Micro strip patch antenna is used in many fields like Antenna and mobile communication, Filters, PCB board model and EMC and EMI. Rogers RT/duroid 5880 (tm) substrate with a dielectric constant of approximately 2.2, is a feed and has a partial ground plane. The gain and directivity of the designed antenna is 7.7082 dB and 7.76882dB respectively.
This document summarizes a research paper that proposes a new boat microstrip patch antenna design with a triangular patch and trapezoidal ground plane to achieve ultra-wide bandwidth. Simulations using HFSS software showed the antenna design provides an impedance bandwidth of 75% from 5.8-12.9 GHz and up to 1000% bandwidth from 2-35 GHz when incorporating a dumb-bell shaped electromagnetic band gap structure along the feed line. Measurements agreed well with simulated results, demonstrating low-profile, small size, and simple design with wide bandwidth suitable for wireless applications.
This document discusses the simulation of an ultra-wideband boat microstrip patch antenna using IE3D software. It proposes a new antenna structure using a triangular microstrip patch alongside a small trapezoidal ground plane with proximity feeding. Simulations show this design provides an impedance bandwidth of 2-35 GHz. Etching a 2D electromagnetic bandgap structure into the feed line increases the bandwidth three times and reduces the antenna size while enhancing gain. Measurements agree well with simulations, showing the antenna achieves over 1000% bandwidth with reasonable bidirectional patterns suitable for wireless applications.
Simulation and optimization of tuneable microstrip patch antenna for fifth-ge...IJECEIAES
Microstrip patch antennas (MPAs) are known largely for their versatility in terms of feasible geometries, making them applicable in many distinct circumstances. In this paper, a graphene-based tuneable single/array rectangular microstrip patch antenna (MPA) utilizing an inset feed technique designed to function in multiple frequency bands are used in a fifth-generation (5G) wireless communications system. The tuneable antenna is used to eliminate the difficulties caused by the narrow bandwidths typically associated with MPAs. The graphene material has a reconfigurable surface conductivity that can be adjusted to function at the required value, thus allowing the required resonance frequency to be selected. The simulated tuneable antenna comprises a copper radiating patch with four graphene strips used for tuning purposes and is designed to cover a wide frequency band. The proposed antenna can be tuned directly by applying a direct current (DC) voltage to the graphene strips, resulting in a variation in the surface impedance of the graphene strips and leading to shifts in the resonance frequency.
Design & Simulation of 8-Shape Slotted Microstrip Patch Antenna
This paper presents an 8-shape slotted microstrip patch antenna. The antenna is fed by microstrip
transmission line. The proposed antenna is simulated with the help of commercially available GEMS software
based on the parallel FDTD algorithm. The antenna is designed by FR4 substrate and ground plane with an area
50mm×40mm×1.60 mm. The designed antenna generates three resonant modes at 2.12 GHz, 6.98 GHz and 13.84
GHz respectively. The bandwidths of the antenna (-10 dB) of the three frequencies are 25.75%, 6.13% and
20.63% respectively. The return loss (S ) characteristics for the three bands are -41.95 dB, -22.68 dB and -23.15
11
dB respectively. The 3D radiation patterns of the proposed antenna are provided in the paper.
Ellipse Shaped Micro-Strip Patch Antenna for Ku, K and Ka Band ApplicationsIRJET Journal
This document presents the design and simulation of an ellipse-shaped microstrip patch antenna for Ku, K, and Ka band applications (14-31GHz). The antenna is designed on an FR-4 substrate with dimensions of 24x24mm. Simulation results using CST software show the antenna has an impedance bandwidth of 13GHz with VSWR less than 2. Radiation patterns are isotropic across frequencies and maximum gain is 5.5dBi. The compact ellipse shape and use of slots in the ground plane contribute to the antenna's broad bandwidth performance in high frequency bands suitable for applications such as satellites and radars.
Design and Analysis of MIMO Patch Antenna for 5G Wireless Communication SystemsIJCNCJournal
In this work, the circular array microstrip patch antenna (MPA) design is proposed for the 5G wireless communication and the millimeter- wave frequency being utilized for this communication system to enhance the coverage area. Here, the Multi Input Multi Output feeding technique is utilized to improve the performance of the proposed design at a resonant frequency of 35 GHz with RT-Duroid 5880 material as substrate. It has 2.2 dielectric constant value and the thickness is 0.5mm.The simulation analysis has obtained the gain as 8.8dB and return loss as -41.9dB. Also, two MPA designs such as single element MPA and 2x2 rectangular array MPA are designed to validate the proposed antenna design. A comparative analysis has proved that the circular array MPA is preferable for the 5G wireless communication system compared to the other two designs such as single element MPA and 2x2 rectangular array MPA.
DESIGN AND ANALYSIS OF MIMO PATCH ANTENNA FOR 5G WIRELESS COMMUNICATION SYSTEMSIJCNCJournal
In this work, the circular array microstrip patch antenna (MPA) design is proposed for the 5G wireless
communication and the millimeter- wave frequency being utilized for this communication system to
enhance the coverage area. Here, the Multi Input Multi Output feeding technique is utilized to improve the
performance of the proposed design at a resonant frequency of 35 GHz with RT-Duroid 5880 material as
substrate. It has 2.2 dielectric constant value and the thickness is 0.5mm.The simulation analysis has
obtained the gain as 8.8dB and return loss as -41.9dB. Also, two MPA designs such as single element MPA
and 2x2 rectangular array MPA are designed to validate the proposed antenna design. A comparative
analysis has proved that the circular array MPA is preferable for the 5G wireless communication system
compared to the other two designs such as single element MPA and 2x2 rectangular array MPA.
This document describes the design and simulation of a stacked microstrip patch antenna with different shaped patches to improve bandwidth. Two configurations are proposed with an E-shaped patch on bottom and U-shaped slotted patch on top, and vice versa. The E-shaped and U-shaped patches are simulated individually then combined in a stacked configuration. Simulation results in HFSS show the configuration with E-shaped patch on top and U-shaped patch on bottom provides dual band operation with improved bandwidth of 1.3 GHz at 5.06 GHz and 1.1 GHz at 7 GHz. The antenna achieves a gain of 7.5 dB at 5 GHz and 6 dB at 7 GHz with a VSWR of less than 2.
Simulation and optimization of a tuneable rectangular microstrip patch antenn...TELKOMNIKA JOURNAL
In this paper, a tuneable rectangular microstrip patch antenna (MPA) is simulated and optimized to operate in four frequency bands of the next generation of wireless communication systems. The proposed design incorporates a copper radiating patch with four implanted graphene strips for tuning purposes. The reconfigurable surface impedance of graphene can easily be altered by applying a DC voltage bias directly to the graphene strips, allowing the operating frequency of the antenna to be tuned as desired. The capability of the applied voltage to tune the operating frequency band of the proposed antenna is studied via computer simulation technology (CST) microwave studio (MWS). Frequency selective surfaces (FSSs) are introduced in order to improve the radiation parameters of the antenna. The operating frequency band of the tuneable rectangular MPA increases directly as the applied DC voltage bias is increased. Based on the simulation results, a tuneable rectangular MPA placed between two FSSs is proposed for fifth-generation applications.
This document summarizes research on modeling the effects of adding a rectangular slot to a microstrip patch antenna. The researchers developed an analytical model to predict how the resonant frequency changes based on the slot's length, width, and position. They conducted simulations varying the slot parameters and found that the resonant frequency generally follows a harmonic behavior similar to an antenna without a slot. Experimental antenna prototypes were fabricated and tested, finding good agreement with simulation results. Mathematical functions are presented that can describe how the slot affects specific antenna characteristics.
A Triple Band Bow Tie Array Antenna Using Both-sided MIC Technology IJECEIAES
A single-fed linearly polarized 2x2 microstrip bow tie array antenna is proposed. The feed network has microstrip line and slot line where microstrip-slot branch circuit is connected in parallel. The feed network of the array is designed using both-sided M IC Technology to overcome the impedance matching problem of conventional feed networks. The 2x2 half bow tie array antenna is also truncated with spur lines for optimization of antenna performance. The array antenna unit can be realized in very simple and compact structure, as all the antenna elements and the feeding circuit is arranged on a Teflon glass fiber substrate without requiring any external network. The design frequency of the proposed antenna is 5 to 8 GHz (C- Band) and the obtained peak gain is 12.41 dBi. The resultant axial ratio indicates that linear polarization is achieved.
Optimization of rectangular microstrip patch antenna parameters in l band by eIAEME Publication
This document describes the simulation and analysis of a rectangular microstrip patch antenna loaded with a proposed composite metamaterial structure. The metamaterial structure is placed at a height of 3.2mm above the ground plane of the antenna. Simulation results show that the proposed design improves the antenna's performance over a simple rectangular microstrip patch antenna. Specifically, the impedance bandwidth increases to 20.4MHz from 8.2MHz, and the return loss improves to -25dB from -10.3dB. The directivity also remains nearly unchanged at 6.856dBi. The Nicolson-Ross-Weir approach is used to extract the effective permeability and permittivity from S-parameters, validating the double-negative properties
This document describes the design of a patch antenna that can operate at multiple frequency bands using metamaterials. A rectangular patch antenna is designed to operate at 3 GHz. Then, a unit cell of complementary split-ring resonator (CSRR) is designed to also operate at 3 GHz. An array of this CSRR unit cell is placed on the patch to act as a metamaterial and enable multiband operation. Specifically, the antenna is designed to resonate in the Bluetooth, WiMax and Wi-Fi bands. Simulation results using HFSS software show that the proposed antenna provides good performance in terms of voltage standing wave ratio, return loss and impedance matching for multiband operation.
The document discusses H-shaped microstrip patch antennas and their advantages over rectangular patch antennas. It summarizes research on using different antenna shapes and techniques to enhance bandwidth. The H-shaped antenna has a size about half of the rectangular patch antenna but with a larger bandwidth due to a reduction in quality factor. Chapter 2 provides a literature review of research on various techniques for bandwidth enhancement, including using H-shaped, E-shaped, and slotted patches as well as changing substrate properties.
Modified T&U Shape Triangular Microstrip Patch Antenna Array for Communication.IJSRD
Modern communication system requires high gain, large bandwidth and less size antennas which shows excellent performance over a wide range of frequency spectrum. Proposed system uses FR4 as a dielectric substrate(€r=4.4).Proposed Triangular Miscrostrip Patch antenna is designed with additional T & U shape ,simulated by using high frequency simulation software HFSS & finally tested with the help of vector network analyzer (VNA -N9923A) . Various antenna parameters like Return Loss, Gain and VSWR etc. are calculated using HFSS. The antenna has been designed to operate on the range of 5.5GHz. This paper report the simulation result using equilateral triangular patch antenna with Microstrip line feed.
This document describes the design and analysis of a hexagonal fractal antenna for ultra-wideband applications from 3-10.6 GHz. The antenna was designed on an FR4 substrate with a dielectric constant of 4.4 and thickness of 1.6mm. It was fed by a 50-ohm microstrip line. The antenna was simulated using HFSS software. Simulation results showed return loss below -10dB, VSWR below 2, and omnidirectional radiation patterns over the frequency band. Removing triangular patterns from the hexagonal patch increased the effective current path length and bandwidth of the antenna. The hexagonal fractal antenna design achieved good performance for UWB applications.
An Improved Bandwidth for Electromagnetic Gap Coupled Rhombus Shaped Microstr...IJERA Editor
This paper presents simulation and analysis of a Stacked Electromagnetic Gap Coupled Rhombus Shaped
Microstrip Patch Antenna (SEGCRSMPA) to increase the bandwidth. The aim of this paper is to improve the
bandwidth of Electromagnetic Gap Coupled Rhombus Shaped Microstrip Patch Antenna (EGCRSMPA). To
improve the bandwidth, stacking principle has been used. In this paper an assembly of one central rectangular
patch with four triangular patches forming rhombus shaped microstrip patch antenna is discussed. IE3D
simulation software is used for simulation. The performance of the proposed microstrip patch antenna is
compared with that of a conventional rectangular microstrip antenna and EGCRSMPA having same dimensions.
The proposed designed microstrip patch antenna offers much improved impedance bandwidth 47.62%.
Similar to An Analytical Approach for Design of Microstrip Patch (MsP) (20)
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Neural network optimizer of proportional-integral-differential controller par...IJECEIAES
Wide application of proportional-integral-differential (PID)-regulator in industry requires constant improvement of methods of its parameters adjustment. The paper deals with the issues of optimization of PID-regulator parameters with the use of neural network technology methods. A methodology for choosing the architecture (structure) of neural network optimizer is proposed, which consists in determining the number of layers, the number of neurons in each layer, as well as the form and type of activation function. Algorithms of neural network training based on the application of the method of minimizing the mismatch between the regulated value and the target value are developed. The method of back propagation of gradients is proposed to select the optimal training rate of neurons of the neural network. The neural network optimizer, which is a superstructure of the linear PID controller, allows increasing the regulation accuracy from 0.23 to 0.09, thus reducing the power consumption from 65% to 53%. The results of the conducted experiments allow us to conclude that the created neural superstructure may well become a prototype of an automatic voltage regulator (AVR)-type industrial controller for tuning the parameters of the PID controller.
An improved modulation technique suitable for a three level flying capacitor ...IJECEIAES
This research paper introduces an innovative modulation technique for controlling a 3-level flying capacitor multilevel inverter (FCMLI), aiming to streamline the modulation process in contrast to conventional methods. The proposed
simplified modulation technique paves the way for more straightforward and
efficient control of multilevel inverters, enabling their widespread adoption and
integration into modern power electronic systems. Through the amalgamation of
sinusoidal pulse width modulation (SPWM) with a high-frequency square wave
pulse, this controlling technique attains energy equilibrium across the coupling
capacitor. The modulation scheme incorporates a simplified switching pattern
and a decreased count of voltage references, thereby simplifying the control
algorithm.
A review on features and methods of potential fishing zoneIJECEIAES
This review focuses on the importance of identifying potential fishing zones in seawater for sustainable fishing practices. It explores features like sea surface temperature (SST) and sea surface height (SSH), along with classification methods such as classifiers. The features like SST, SSH, and different classifiers used to classify the data, have been figured out in this review study. This study underscores the importance of examining potential fishing zones using advanced analytical techniques. It thoroughly explores the methodologies employed by researchers, covering both past and current approaches. The examination centers on data characteristics and the application of classification algorithms for classification of potential fishing zones. Furthermore, the prediction of potential fishing zones relies significantly on the effectiveness of classification algorithms. Previous research has assessed the performance of models like support vector machines, naïve Bayes, and artificial neural networks (ANN). In the previous result, the results of support vector machine (SVM) were 97.6% more accurate than naive Bayes's 94.2% to classify test data for fisheries classification. By considering the recent works in this area, several recommendations for future works are presented to further improve the performance of the potential fishing zone models, which is important to the fisheries community.
Electrical signal interference minimization using appropriate core material f...IJECEIAES
As demand for smaller, quicker, and more powerful devices rises, Moore's law is strictly followed. The industry has worked hard to make little devices that boost productivity. The goal is to optimize device density. Scientists are reducing connection delays to improve circuit performance. This helped them understand three-dimensional integrated circuit (3D IC) concepts, which stack active devices and create vertical connections to diminish latency and lower interconnects. Electrical involvement is a big worry with 3D integrates circuits. Researchers have developed and tested through silicon via (TSV) and substrates to decrease electrical wave involvement. This study illustrates a novel noise coupling reduction method using several electrical involvement models. A 22% drop in electrical involvement from wave-carrying to victim TSVs introduces this new paradigm and improves system performance even at higher THz frequencies.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Bibliometric analysis highlighting the role of women in addressing climate ch...IJECEIAES
Fossil fuel consumption increased quickly, contributing to climate change
that is evident in unusual flooding and draughts, and global warming. Over
the past ten years, women's involvement in society has grown dramatically,
and they succeeded in playing a noticeable role in reducing climate change.
A bibliometric analysis of data from the last ten years has been carried out to
examine the role of women in addressing the climate change. The analysis's
findings discussed the relevant to the sustainable development goals (SDGs),
particularly SDG 7 and SDG 13. The results considered contributions made
by women in the various sectors while taking geographic dispersion into
account. The bibliometric analysis delves into topics including women's
leadership in environmental groups, their involvement in policymaking, their
contributions to sustainable development projects, and the influence of
gender diversity on attempts to mitigate climate change. This study's results
highlight how women have influenced policies and actions related to climate
change, point out areas of research deficiency and recommendations on how
to increase role of the women in addressing the climate change and
achieving sustainability. To achieve more successful results, this initiative
aims to highlight the significance of gender equality and encourage
inclusivity in climate change decision-making processes.
Voltage and frequency control of microgrid in presence of micro-turbine inter...IJECEIAES
The active and reactive load changes have a significant impact on voltage
and frequency. In this paper, in order to stabilize the microgrid (MG) against
load variations in islanding mode, the active and reactive power of all
distributed generators (DGs), including energy storage (battery), diesel
generator, and micro-turbine, are controlled. The micro-turbine generator is
connected to MG through a three-phase to three-phase matrix converter, and
the droop control method is applied for controlling the voltage and
frequency of MG. In addition, a method is introduced for voltage and
frequency control of micro-turbines in the transition state from gridconnected mode to islanding mode. A novel switching strategy of the matrix
converter is used for converting the high-frequency output voltage of the
micro-turbine to the grid-side frequency of the utility system. Moreover,
using the switching strategy, the low-order harmonics in the output current
and voltage are not produced, and consequently, the size of the output filter
would be reduced. In fact, the suggested control strategy is load-independent
and has no frequency conversion restrictions. The proposed approach for
voltage and frequency regulation demonstrates exceptional performance and
favorable response across various load alteration scenarios. The suggested
strategy is examined in several scenarios in the MG test systems, and the
simulation results are addressed.
Enhancing battery system identification: nonlinear autoregressive modeling fo...IJECEIAES
Precisely characterizing Li-ion batteries is essential for optimizing their
performance, enhancing safety, and prolonging their lifespan across various
applications, such as electric vehicles and renewable energy systems. This
article introduces an innovative nonlinear methodology for system
identification of a Li-ion battery, employing a nonlinear autoregressive with
exogenous inputs (NARX) model. The proposed approach integrates the
benefits of nonlinear modeling with the adaptability of the NARX structure,
facilitating a more comprehensive representation of the intricate
electrochemical processes within the battery. Experimental data collected
from a Li-ion battery operating under diverse scenarios are employed to
validate the effectiveness of the proposed methodology. The identified
NARX model exhibits superior accuracy in predicting the battery's behavior
compared to traditional linear models. This study underscores the
importance of accounting for nonlinearities in battery modeling, providing
insights into the intricate relationships between state-of-charge, voltage, and
current under dynamic conditions.
Smart grid deployment: from a bibliometric analysis to a surveyIJECEIAES
Smart grids are one of the last decades' innovations in electrical energy.
They bring relevant advantages compared to the traditional grid and
significant interest from the research community. Assessing the field's
evolution is essential to propose guidelines for facing new and future smart
grid challenges. In addition, knowing the main technologies involved in the
deployment of smart grids (SGs) is important to highlight possible
shortcomings that can be mitigated by developing new tools. This paper
contributes to the research trends mentioned above by focusing on two
objectives. First, a bibliometric analysis is presented to give an overview of
the current research level about smart grid deployment. Second, a survey of
the main technological approaches used for smart grid implementation and
their contributions are highlighted. To that effect, we searched the Web of
Science (WoS), and the Scopus databases. We obtained 5,663 documents
from WoS and 7,215 from Scopus on smart grid implementation or
deployment. With the extraction limitation in the Scopus database, 5,872 of
the 7,215 documents were extracted using a multi-step process. These two
datasets have been analyzed using a bibliometric tool called bibliometrix.
The main outputs are presented with some recommendations for future
research.
Use of analytical hierarchy process for selecting and prioritizing islanding ...IJECEIAES
One of the problems that are associated to power systems is islanding
condition, which must be rapidly and properly detected to prevent any
negative consequences on the system's protection, stability, and security.
This paper offers a thorough overview of several islanding detection
strategies, which are divided into two categories: classic approaches,
including local and remote approaches, and modern techniques, including
techniques based on signal processing and computational intelligence.
Additionally, each approach is compared and assessed based on several
factors, including implementation costs, non-detected zones, declining
power quality, and response times using the analytical hierarchy process
(AHP). The multi-criteria decision-making analysis shows that the overall
weight of passive methods (24.7%), active methods (7.8%), hybrid methods
(5.6%), remote methods (14.5%), signal processing-based methods (26.6%),
and computational intelligent-based methods (20.8%) based on the
comparison of all criteria together. Thus, it can be seen from the total weight
that hybrid approaches are the least suitable to be chosen, while signal
processing-based methods are the most appropriate islanding detection
method to be selected and implemented in power system with respect to the
aforementioned factors. Using Expert Choice software, the proposed
hierarchy model is studied and examined.
Enhancing of single-stage grid-connected photovoltaic system using fuzzy logi...IJECEIAES
The power generated by photovoltaic (PV) systems is influenced by
environmental factors. This variability hampers the control and utilization of
solar cells' peak output. In this study, a single-stage grid-connected PV
system is designed to enhance power quality. Our approach employs fuzzy
logic in the direct power control (DPC) of a three-phase voltage source
inverter (VSI), enabling seamless integration of the PV connected to the
grid. Additionally, a fuzzy logic-based maximum power point tracking
(MPPT) controller is adopted, which outperforms traditional methods like
incremental conductance (INC) in enhancing solar cell efficiency and
minimizing the response time. Moreover, the inverter's real-time active and
reactive power is directly managed to achieve a unity power factor (UPF).
The system's performance is assessed through MATLAB/Simulink
implementation, showing marked improvement over conventional methods,
particularly in steady-state and varying weather conditions. For solar
irradiances of 500 and 1,000 W/m2
, the results show that the proposed
method reduces the total harmonic distortion (THD) of the injected current
to the grid by approximately 46% and 38% compared to conventional
methods, respectively. Furthermore, we compare the simulation results with
IEEE standards to evaluate the system's grid compatibility.
Enhancing photovoltaic system maximum power point tracking with fuzzy logic-b...IJECEIAES
Photovoltaic systems have emerged as a promising energy resource that
caters to the future needs of society, owing to their renewable, inexhaustible,
and cost-free nature. The power output of these systems relies on solar cell
radiation and temperature. In order to mitigate the dependence on
atmospheric conditions and enhance power tracking, a conventional
approach has been improved by integrating various methods. To optimize
the generation of electricity from solar systems, the maximum power point
tracking (MPPT) technique is employed. To overcome limitations such as
steady-state voltage oscillations and improve transient response, two
traditional MPPT methods, namely fuzzy logic controller (FLC) and perturb
and observe (P&O), have been modified. This research paper aims to
simulate and validate the step size of the proposed modified P&O and FLC
techniques within the MPPT algorithm using MATLAB/Simulink for
efficient power tracking in photovoltaic systems.
Adaptive synchronous sliding control for a robot manipulator based on neural ...IJECEIAES
Robot manipulators have become important equipment in production lines, medical fields, and transportation. Improving the quality of trajectory tracking for
robot hands is always an attractive topic in the research community. This is a
challenging problem because robot manipulators are complex nonlinear systems
and are often subject to fluctuations in loads and external disturbances. This
article proposes an adaptive synchronous sliding control scheme to improve trajectory tracking performance for a robot manipulator. The proposed controller
ensures that the positions of the joints track the desired trajectory, synchronize
the errors, and significantly reduces chattering. First, the synchronous tracking
errors and synchronous sliding surfaces are presented. Second, the synchronous
tracking error dynamics are determined. Third, a robust adaptive control law is
designed,the unknown components of the model are estimated online by the neural network, and the parameters of the switching elements are selected by fuzzy
logic. The built algorithm ensures that the tracking and approximation errors
are ultimately uniformly bounded (UUB). Finally, the effectiveness of the constructed algorithm is demonstrated through simulation and experimental results.
Simulation and experimental results show that the proposed controller is effective with small synchronous tracking errors, and the chattering phenomenon is
significantly reduced.
Remote field-programmable gate array laboratory for signal acquisition and de...IJECEIAES
A remote laboratory utilizing field-programmable gate array (FPGA) technologies enhances students’ learning experience anywhere and anytime in embedded system design. Existing remote laboratories prioritize hardware access and visual feedback for observing board behavior after programming, neglecting comprehensive debugging tools to resolve errors that require internal signal acquisition. This paper proposes a novel remote embeddedsystem design approach targeting FPGA technologies that are fully interactive via a web-based platform. Our solution provides FPGA board access and debugging capabilities beyond the visual feedback provided by existing remote laboratories. We implemented a lab module that allows users to seamlessly incorporate into their FPGA design. The module minimizes hardware resource utilization while enabling the acquisition of a large number of data samples from the signal during the experiments by adaptively compressing the signal prior to data transmission. The results demonstrate an average compression ratio of 2.90 across three benchmark signals, indicating efficient signal acquisition and effective debugging and analysis. This method allows users to acquire more data samples than conventional methods. The proposed lab allows students to remotely test and debug their designs, bridging the gap between theory and practice in embedded system design.
Detecting and resolving feature envy through automated machine learning and m...IJECEIAES
Efficiently identifying and resolving code smells enhances software project quality. This paper presents a novel solution, utilizing automated machine learning (AutoML) techniques, to detect code smells and apply move method refactoring. By evaluating code metrics before and after refactoring, we assessed its impact on coupling, complexity, and cohesion. Key contributions of this research include a unique dataset for code smell classification and the development of models using AutoGluon for optimal performance. Furthermore, the study identifies the top 20 influential features in classifying feature envy, a well-known code smell, stemming from excessive reliance on external classes. We also explored how move method refactoring addresses feature envy, revealing reduced coupling and complexity, and improved cohesion, ultimately enhancing code quality. In summary, this research offers an empirical, data-driven approach, integrating AutoML and move method refactoring to optimize software project quality. Insights gained shed light on the benefits of refactoring on code quality and the significance of specific features in detecting feature envy. Future research can expand to explore additional refactoring techniques and a broader range of code metrics, advancing software engineering practices and standards.
Smart monitoring technique for solar cell systems using internet of things ba...IJECEIAES
Rapidly and remotely monitoring and receiving the solar cell systems status parameters, solar irradiance, temperature, and humidity, are critical issues in enhancement their efficiency. Hence, in the present article an improved smart prototype of internet of things (IoT) technique based on embedded system through NodeMCU ESP8266 (ESP-12E) was carried out experimentally. Three different regions at Egypt; Luxor, Cairo, and El-Beheira cities were chosen to study their solar irradiance profile, temperature, and humidity by the proposed IoT system. The monitoring data of solar irradiance, temperature, and humidity were live visualized directly by Ubidots through hypertext transfer protocol (HTTP) protocol. The measured solar power radiation in Luxor, Cairo, and El-Beheira ranged between 216-1000, 245-958, and 187-692 W/m 2 respectively during the solar day. The accuracy and rapidity of obtaining monitoring results using the proposed IoT system made it a strong candidate for application in monitoring solar cell systems. On the other hand, the obtained solar power radiation results of the three considered regions strongly candidate Luxor and Cairo as suitable places to build up a solar cells system station rather than El-Beheira.
An efficient security framework for intrusion detection and prevention in int...IJECEIAES
Over the past few years, the internet of things (IoT) has advanced to connect billions of smart devices to improve quality of life. However, anomalies or malicious intrusions pose several security loopholes, leading to performance degradation and threat to data security in IoT operations. Thereby, IoT security systems must keep an eye on and restrict unwanted events from occurring in the IoT network. Recently, various technical solutions based on machine learning (ML) models have been derived towards identifying and restricting unwanted events in IoT. However, most ML-based approaches are prone to miss-classification due to inappropriate feature selection. Additionally, most ML approaches applied to intrusion detection and prevention consider supervised learning, which requires a large amount of labeled data to be trained. Consequently, such complex datasets are impossible to source in a large network like IoT. To address this problem, this proposed study introduces an efficient learning mechanism to strengthen the IoT security aspects. The proposed algorithm incorporates supervised and unsupervised approaches to improve the learning models for intrusion detection and mitigation. Compared with the related works, the experimental outcome shows that the model performs well in a benchmark dataset. It accomplishes an improved detection accuracy of approximately 99.21%.
Generative AI Use cases applications solutions and implementation.pdfmahaffeycheryld
Generative AI solutions encompass a range of capabilities from content creation to complex problem-solving across industries. Implementing generative AI involves identifying specific business needs, developing tailored AI models using techniques like GANs and VAEs, and integrating these models into existing workflows. Data quality and continuous model refinement are crucial for effective implementation. Businesses must also consider ethical implications and ensure transparency in AI decision-making. Generative AI's implementation aims to enhance efficiency, creativity, and innovation by leveraging autonomous generation and sophisticated learning algorithms to meet diverse business challenges.
https://www.leewayhertz.com/generative-ai-use-cases-and-applications/
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELijaia
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...shadow0702a
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
Build the Next Generation of Apps with the Einstein 1 Platform.
Rejoignez Philippe Ozil pour une session de workshops qui vous guidera à travers les détails de la plateforme Einstein 1, l'importance des données pour la création d'applications d'intelligence artificielle et les différents outils et technologies que Salesforce propose pour vous apporter tous les bénéfices de l'IA.
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Sinan KOZAK
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
VARIABLE FREQUENCY DRIVE. VFDs are widely used in industrial applications for...PIMR BHOPAL
Variable frequency drive .A Variable Frequency Drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of its power supply. VFDs are widely used in industrial applications for motor control, providing significant energy savings and precise motor operation.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Prediction of Electrical Energy Efficiency Using Information on Consumer's Ac...PriyankaKilaniya
Energy efficiency has been important since the latter part of the last century. The main object of this survey is to determine the energy efficiency knowledge among consumers. Two separate districts in Bangladesh are selected to conduct the survey on households and showrooms about the energy and seller also. The survey uses the data to find some regression equations from which it is easy to predict energy efficiency knowledge. The data is analyzed and calculated based on five important criteria. The initial target was to find some factors that help predict a person's energy efficiency knowledge. From the survey, it is found that the energy efficiency awareness among the people of our country is very low. Relationships between household energy use behaviors are estimated using a unique dataset of about 40 households and 20 showrooms in Bangladesh's Chapainawabganj and Bagerhat districts. Knowledge of energy consumption and energy efficiency technology options is found to be associated with household use of energy conservation practices. Household characteristics also influence household energy use behavior. Younger household cohorts are more likely to adopt energy-efficient technologies and energy conservation practices and place primary importance on energy saving for environmental reasons. Education also influences attitudes toward energy conservation in Bangladesh. Low-education households indicate they primarily save electricity for the environment while high-education households indicate they are motivated by environmental concerns.
Digital Twins Computer Networking Paper Presentation.pptxaryanpankaj78
A Digital Twin in computer networking is a virtual representation of a physical network, used to simulate, analyze, and optimize network performance and reliability. It leverages real-time data to enhance network management, predict issues, and improve decision-making processes.
2. ISSN: 2088-8708
Int J Elec & Comp Eng, Vol. 8, No. 6, December 2018 : 4175 - 4183
4176
2. RELATED WORK
The recent researches towards antenna design are reviewed in this section. A wast range of
researches are exist towards the design of wideband antenna and are capable of handling the transmission
issues and offer high speed communication. A survey work towards the design of MsP antenna and its
contribution towards communication system is found in Kavitaand Aravinda (2017) [8] that offers existing
research gap in MsP antenna technology. Similarly, Tang et al. (2016) [9] presented a strip-helical antenna
system with a parasitic circular patch for circular polarization which are capable of working like an
impedance bandwidth.
Further, Salih et al. [10] gave a dual-band patch antenna for small form factor devices. This antenna
was fabricated over Rogers (RO4350) board, the measured result have a good agreement with simulated
ones. A dual-band circularly polarized antennas have been receiving much attention due to their distinct
feature of single layer and single feeds. There are two different dissimilar radiators and two pairs of
degenerate’s mode TM01/TM10 and TM03/TM30 modes. In order to minimize the cost, miniaturised size,
and easy integration author Zahang et al. (2016) [11] introduced a dual-frequency band polarisation method
which achieves the radition about 7.0and 5.9 in the two bands. In Katyal et al. (2016) [12], a transmission-
line equivalent circut technique is presented for analysis of multilayered MsP antenna.The performance of
the technique is validated by analysis of broadband antenna and found that the proposed method is capable
for quick circuir level imitation and optimization. In the study of different type of printed antennas having
different type of patch like, rectangular, square, triangular, circular, elliptical are suitable for 60HZ wairless
application.
For reduce over all size and to avoid lossymillimetre-wave connectors author Hannachi et al. [13]
has proposed a keysight technologies, this given technology is very helpfull of radio frequency design. In
bandwidth improvement of an equilateral trangularMsP antenna under differential exitation, the radition
directivity of TM11 mode is atteched such a patch. For improved a lot of field distribution, Wang et al.
(2017) [14] have presented an additional mod for both TM10and TM11 exited for radiation. Both virtual and
measured result has been exhibit wide bandwidth and good presentation of radiation.
Broker et al. (2016) [15] given a linearly polarized dual-band patch antenna resulting low cross-polarization
and autonomous band control.Finelly, the resultsgives lower operating band and upper operating band is
shifted up to 10% lastly.To minimize the cross-polarization, low loss is applied to integrate the antenna array
and bring improvement in antenna array gain, Jing et al. (2015) [16] have presented a low temperature co-
fired ceramic (LTCC) process. This process has been used to fabricate and measure outcomes and found10-
dB of impedance and the gain of 18.62 dB at 61.5 GHz.
Trong et al. (2017) [17] proposed a center-shorted MsPmeschnism by which DC bias voltage; both
resonance frequencies variedsimulataneously. Li et al. (2016) [18] given a vertically integrated differential
filtering antenna that composed of a differential-fed MsP antenna with U-shaped differential resonator. The
outcomes of [18] behave as frequency responce for both gain and return loss. In order to generate millimeter-
wave, Yao et al. (2016) [19] gave a Hermite-Gussian (HG) method and are formed by four inset-fed MsP
element also with a microstripcorporate feeding network. Through [19] accuracy in measurement and
simulation is achieved. Attaran et al. (2016) [20], described a Rotman lens method in which the length on the
communication lines are not affected the progressive phase delay. Through [20], the complexity is minimized
and performance parameters are maximized which finally gives low phase error of 0.450 in critical condition.
Zhang et al. (2016) [21] illustratedMsP antenna with the capabilities of bandwidth and harmonic
suppression. Here, a pair of lemda/4 microstrio-line, wide band property can be obtained by making useful
use of thr two resonances introduce by burning patch and non-radiating patch. The given prototype antenna is
oprating at 4.9 GHZ is designed and fabricated, higher-order radiating modes has been effectively cancelled.
In Sun et al. (2016) [22], a proximity coupled cavity backed patch antenna is expressed for long range RFID
tag. The patch structure also offers a way to tune the resonant frequency of the antenna. The given antenna is
achieved a gain of 5.7 dBi. In order to provide support towards two distinct operating frequencies author
Smyth et al. (2016) [23] have given a novel dual-band MsPantenna based on EBG itegrated into its radiating
edges. Through this dual antenna radiation tracked at 2.4 GHz and 5.0 GHz frequency. Thus, in this paper the
priority is given for designing an accurate computerized tool for MsPantenna and following utilized
aanalytical approach which composed optimized synthesis of patterns for MsP antenna design.
3. SYSTEM MODEL FOR MICROSTRIP PATCH (MsP) ANTENNA
In order to get the geometrical topology for MsP antenna the architecture is shown in Figure 1.
The core component such as height of MsP antenna (d1), width of MsP antenna (d2), width of metal ground
slot aperture (w1), length of metal ground slot aperture (u1), clot center to patch center (v1), length of open
end stub, terminates the feed (v2), chamber length of the input microstrip (wc) and microstrip signal trace
3. Int J Elec & Comp Eng ISSN: 2088-8708
An Analytical Approach for Design of Microstrip Patch (MsP) … (R. J. Kavitha)
4177
width (wo) are considered. The starting point (Sp) of the topology is initiated as [Spx, Spy] to arrive to the
patch element with Xpatch [], Ypatch [] a schematic shown in Figure 1.
Antenna parameters
(d1, d2, w1,u1,v1,v2,wc,wo)
Operating Frequency
Relative power Propagation pattern
Antenna impedance Reflection coifficient
Active
Reflection Coefficient
Side lobe level
Figure 1. Architecture of proposed design
Here the information’s of d1, d2, u1, v1, v2, wc and wo are considered as input parameters. Later,
the starting point (Sp) is defined corresponding to the coordinates of Xpath and Ypath. The Sp can be
obtained by,
Sp = [Spx, Spy] (1)
[Xpatch] = [Spi,∑(Spi + 𝐝𝟐), ∑(Spi + 𝐝𝟐), Spi, Spi ] at, i=1 (2)
[Ypatch] = [Spi,Spi ∑(Spi + 𝐝𝟏), ∑(Spi + 𝐝𝟏), (Spi1)] at, i=2 (3)
Further, the center localization of the patch (Px, Py) is computed by using equation 4.
Px = ∑((Spi + (
𝐝𝟐
𝟐
)), i=1
Py =∑((Spi + (
𝐝𝟏
𝟐
)), i=2 (4)
Figure 2. Patch with Xpatch []. Ypatch []
Based on these coordinates, a rectangle is plotted and for the same rectangle, patch center is
determined.
[PxPy] f (Spi, d1, d2) at i=1, 2 (5)
4. ISSN: 2088-8708
Int J Elec & Comp Eng, Vol. 8, No. 6, December 2018 : 4175 - 4183
4178
Using this patch center, a center patch line is drawn.
i.e. [px-2 px+v1+v2], [pypy]
[pxpx], [2 py+d1/3+0.5] (6)
Then the clot center (Cc) is obtained, which is relative to the patch center.
Cc = ([px+v1 px+v1], [py-w0/2 py+d1/3+0.5] (7)
The distance for right angled triangle (xt) is obtained by using equation 8.
i.e. 2/2
wcxt (8)
Then slot aperture of metal ground is calculated for both the Xpath and Ypath using equation 9.
xmetal_ground = [px+v1-w1/2 px+v1+w1/2 px+v1+w1/2 px+v1-w1/2 px+v1-w1/2]
ymetal_ground = [py-u1/2 py-u1/2 py+u1/2 py+u1/2 py-u1/2] (9)
Finally the labeling of the plot is done and outcome of the topology is shown in the Figure 3.
Figure 3. Default topology of MsP antenna
Topology Algorithm
Initialize : d1, d2, w1, u1, v1, v2,wc, wo
Sp[Spx, Spy]
[Xpatch ] [Spi ,∑(Spi + 𝐝𝟐), ∑(Spi + 𝐝𝟐), Spi, Spi ]i=1
[Ypatch ] [Spi, Spi ∑(Spi + 𝐝𝟏), ∑(Spi + 𝐝𝟏), (Spi1)]i=2
[PxPy]f (Spi, d1, d2) where, i=1, 2
[px-2 px+v1+v2], [pypy] and [pxpx], [2 py+d1/3+0.5]
Cc ([px+v1 px+v1], [py-w0/2 py+d1/3+0.5]
2/2
wcxt
xmetal_ground [px+v1-w1/2 px+v1+w1/2 px+v1+w1/2 px+v1-w1/2 px+v1-w1/2]
ymetal_ground [py-u1/2 py-u1/2 py+u1/2 py+u1/2 py-u1/2]
5. Int J Elec & Comp Eng ISSN: 2088-8708
An Analytical Approach for Design of Microstrip Patch (MsP) … (R. J. Kavitha)
4179
Synthesis of antenna array
initialize : d1, d2, w1, u1, v1, v2, wc, wo
c 8x108
if (i=1; i<=5; i++) where i- is iteration
fcnx109
where n = 8,9,10,11,12
λc/fc
NR or NC bSin
2
Op NR_NC(c, fc [d1, d2, w1, u1, v1, v2, wc, wo])
URA Is ([ NCNR ] [ 2
2
]
AwEwnURA
NR NR+
NC NC-
Repeat for op
To compute the relative power, the parameters like d1, d2, w1, u1, v1, v2, wc, wo are initialized.
Later, carrier frequency (fc) computed by using signal propagation speed (c). Further, wavelength (λ) is
calculated by dividing “c” with “fc”.
i.e., λ = c/fc (10)
The array size along with elevation and azimuth direction can be obtained by required beam width.
For the half wavelength spacing, the number of elements along with certain direction can be given as;
NR or NC =
bSin
2 (11)
In equation 11, the value of b represents the beam width along that direction. The other parameters (Op)
like azimuth cutoff and elevation cut off can obtain by following equation.
Op = NR_NC(c, fc [d1, d2, w1, u1, v1, v2, wc, wo]) (12)
Then, the uniform rectangular array (URA) is considered as the integration of two separable uniform Line
arrays (ULA) and designed the windows for both the elevation and azimuth direction through digital filer
design methods. Then the URA developed by identical sensor elements can be given as:
i.e., URA = Is ([ NCNR ] [
2
2
] (13)
In equation 13, Is indicates the identical sensor element. On assigning the weights to the array following
equation 14 is obtained.
i.e., AwEwnURA (14)
Where nURA indicates the new URA, Ew indicates the elevation weight and Aw represents the Azimuth
weight. Later the comparison among the new URA and previous URA. In antenna technology the side lobes
are the local maxima or lobes of the far field radiation pattern which are not the main lobes. Here, the side
lobe level of the new URA is compared with the previous design. However, the new URA does not meet the
requirements and hence trial and error method is applied to NR and NC parameters.
i.e., NR = NR+
NC = NC-
Then obtained values of NR and NC are updated to get the optimized design results.
6. ISSN: 2088-8708
Int J Elec & Comp Eng, Vol. 8, No. 6, December 2018 : 4175 - 4183
4180
4. RESULTS ANALYSIS
For design of MsP antenna MATLAB is used and obtained results on execusion. The performance
analysis of the design is compared with existing method. The following Figure 4, illustrates the beam pattern
for looks directions ranging from <-300
to 00
azimuth and elevation degrees and maintains null at -400
.
Figure 4. Beam pattern for azimuth and elevation degree
The array synthesis is represented in Figure 5 with respect to topology 1, 2, 4 and optimal topology
by considering bandwidth. Here, the topology 1 array is just crossing the required bandwidth of patterns of
topology 2, 4 and optimal topology. However, the side lobes of patterns bandwidth is higher that of desired
pattern. This kind of side lobes can be optimized by utilizing windowing operations to array. If URA is the
combination of two different uniform linear arrays (ULA), then thedesign of window can be performed
separately in both elevation and azimuth directions by utilizing filter designing models. The Figure 4 gives
the side lobe level compared with different topologies and is found that side lobe level of optimal topology is
less than topology 1, topology 2 and topology 4.
Figure 5. Beam patterns synthesis with different methods
The 3D radiation patterns are composed of symmetries for both azimuth and elevation cuts. Hence,
the patterns are acquired through URA. The Figure 6 indicates that no energy is radiated in reverse to back of
array in which the bandwidth and side lobe level of synthesized pattern are resulted with desired specification
and is considered as 3D pattern synthesis.
7. Int J Elec & Comp Eng ISSN: 2088-8708
An Analytical Approach for Design of Microstrip Patch (MsP) … (R. J. Kavitha)
4181
Figure 6. design pattern (3D) syntehesis
The Figure 7 represents the MsP antenna over the frequency band. In this, the resistance and
reactance varyas frequency varies. This variation can be seen that the reactance value is negative before the
resonance and the same value is positive after the resonance and this reactance is considered as“series
resonance”. If impedance curve varies from positive to negative reactance and is considered as “parallel
resonance”. Both the resistance and reactance are fully different as resistance which is not depend on
frequency while reactance does. The resistance does not cause phase shift while reactance causes phase shift
of 900
among voltage and current. In Figure 7, resistance remains at positive value and reactance stays at
negative value during resonance and reaches positive after resonance.
Figure 7. Antenna performance over frequency band
The antenna reflection coefficient is shown in Figure 8 which is the relative fraction of the incident
Radio frequency (RF) power and is reflected back because of impedance mismatch. The impedance
mismatch is the difference among the antenna input impedance and the transmission line characteristic or
reference impedance. The reflection coefficient is represented as operating bandwidth of antenna. The
antenna bandwidth is the frequency band on which the magnitude of reflection coefficient < -10dB.
Figure 8. Analysis offrequency with respect to magnitude
8. ISSN: 2088-8708
Int J Elec & Comp Eng, Vol. 8, No. 6, December 2018 : 4175 - 4183
4182
The active reflection coefficients analysis with four different topology are compared corresponding
to frequency are shown Figure 9, where optimal topology acquired positive value than other topology1,
topology2 and topology4.
Figure 9. Active reflection coefficient Vs frequency
The Figure 10 represents the array side lobe level for different methods. The side lobes are the far
field radiation pattern and are not considered as main lobes. The side lobe level increases with decreases in
the bandwidth. In order to get a significant array pattern, the side lobe level value must be higher. From the
Figure 10, it is found that the optimal topology, topology1, topology 2and topology 4exhibits 24.3109,
16.8963, 18.7218, and 21.0294 respectively. Thus, the optimal topology acquires lower antenna cost with
higher value of side lobe level.
Figure 10. Side lobe levels for different methods
5. CONCLUSION
This paper introduces ananalytical approach to perform the simulation of linear MsP antenna design.
The results of the design were considered with respect to beam patterns synthesis, design pattern (3D)
syntehesis, antennaperformance over frequency band, and analysis offrequency with respect to magnitude,
active reflection coefficient Vs frequency and Side lobe levels for different methods. The outcomes of the
approach allow significantly controlling both the radiation as well as reflection coefficient through the
element geometry design and identical sensor element. The analytical approach come up with minimized the
cost of antenna to low side lobe level corresponding to some EMI of array antenna.
REFERENCES
[1] C. A. Balanis, “Antenna theory,” 3rd ed., Wiley Inter science, 2005.
[2] R. J. Mailloux, “Phased array antenna handbook,” 2nd ed., Artech House, 2005.
[3] S. Koziel and S. Ogurtsov, “Antenna design using variable fidelity electromagnetic simulations,” Int. J. Applied
Electromagnetics and Mechanics, vol. 43, pp. 169-183, 2013.
9. Int J Elec & Comp Eng ISSN: 2088-8708
An Analytical Approach for Design of Microstrip Patch (MsP) … (R. J. Kavitha)
4183
[4] S. Koziel, et al., “Variable-fidelity electromagnetic simulations and co-kriging for accurate modeling of antennas,”
IEEE Transactions on Antennas and Propagation, vol/issue: 61(3), pp. 1301-1308, 2013.
[5] M. M. Khodier and C. G. Christodoulou, “Linear array geometry synthesis with minimum sidelobe level and null
control using particle swarm optimization,” IEEE Trans. Antennas Prop., vol/issue: 53(8), pp. 2674-2679, 2005.
[6] F. J. A. Pena, et al., “Genetic algorithms in the design and optimization of antenna array patterns,” IEEE Trans.
Antennas Prop., vol. 47, pp. 506-510, 1999.
[7] D. W. Boeringer, et al., “A simultaneous parameter adaptation scheme for genetic algorithms with application to
phased array synthesis,” IEEE Trans. Antennas Prop., vol. 53, pp. 356-371, 2005.
[8] R. J. Kavitha and H. S. Aravinda, “Reviewing the Effectiveness of Contribution of Microstrip Antenna in the
Communication System,” Open Journal of Antennas and Propagation, vol/issue: 5(02), pp. 47, 2017.
[9] X. Tang, et al., “Design of a Wideband Circularly Polarized Strip-Helical Antenna with a Parasitic Patch,” IEEE
Access, vol. 4, pp. 7728-7735, 2016.
[10] A. A. Salih and M. S. Sharawi, “A Dual-Band Highly Miniaturized Patch Antenna,” IEEE Antennas and Wireless
Propagation Letters, vol. 15, pp. 1783-1786, 2016.
[11] J. D. Zhang, et al., “CP patch antenna with controllable polarisation over dual-frequency bands,” IET Microwaves,
Antennas & Propagation, 2016.
[12] A. Katyal and A. Basu, “Analysis and optimisation of broadband stacked MsAs using transmission line model,”
IET Microwaves, Antennas & Propagation, 2016.
[13] C. Hannachi and S. O. Tatu, “Performance comparison of 60 GHz printed patch antennas with different geometrical
shapes using miniature hybrid microwave integrated circuits technology,” IET Microwaves, Antennas &
Propagation, 2016.
[14] J. Wang, et al., “Bandwidth Enhancement of a Differential-Fed Equilateral Triangular Patch Antenna via Loading
of Shorting Posts,” IEEE Transactions on Antennas and Propagation, vol/issue: 65(1), pp. 36-43, 2017.
[15] D. E. Brocker, et al., “Miniaturized Dual-band Folded Patch Antenna with Independent Band Control Utilizing an
Interdigitated Slot Loading,” IEEE Transactions on Antennas and Propagation, 2016.
[16] H. Jin, et al., “High-gain low-cross-polarization 60-GHz LTCC patch antenna array with differential-fed and soft-
surface structures,” Microwave Conference (APMC), 2015 Asia-Pacific, vol. 1, 2015.
[17] N. N. Trong, et al., “A frequency-and pattern-reconfigurable center-shorted MsA,” IEEE Antennas and Wireless
Propagation Letters, vol. 15, pp. 1955-1958, 2016.
[18] L. Li and G. Liu, “A Differential MsAWith Filtering Response,” IEEE Antennas and Wireless Propagation Letters,
vol. 15, pp. 1983-1986, 2016.
[19] H. Yao, et al., “Patch Antenna Array for the Generation of Millimeter-Wave Hermite–Gaussian Beams,” IEEE
Antennas and Wireless Propagation Letters, vol. 15, pp. 1947-1950, 2016.
[20] A. Attaran, et al., “60 GHz Low phase error rotman lens combined with wideband MsA array using LTCC
technology,” IEEE Transactions on Antennas and Propagation, vol/issue: 64(12), pp. 5172-5180, 2016.
[21] J. D. Zhang, et al., “A Compact Microstrip-Fed Patch Antenna with Enhanced Bandwidth and Harmonic
Suppression,” IEEE Transactions on Antennas and Propagation, vol/issue: 64(12), pp. 5030-5037, 2016.
[22] H. Sun, et al., “Proximity Coupled Cavity Backed Patch Antenna for Long Range UHF RFID Tag,” IEEE
Transactions on Antennas and Propagation, vol/issue: 64(12), pp. 5446-5449, 2016.
[23] B. P. Smyth, et al., “Dual-Band Microstrip Patch Antenna Using Integrated Uniplanar Metamaterial-Based EBGs,”
IEEE Transactions on Antennas and Propagation, vol/issue: 64(12), pp. 5046-5053, 2016.
BIOGRAPHIES OF AUTHORS
Kavitha R J working as a research scholar at Visvesvaraya Technological University, Belagavi
has around 5 research papers to her credit. She has served in different organizations and has
around 16+ years of experience. She has completed her BE from Mysore University and
MTechfrom Visvesvaraya Technological University in 2008. She has been instrumental in the
process of Accreditation work.
Dr. Aravind HS, MTech, Ph.D., is a professor and head of Electronics and Communication
engineering department at JSSATE, Bengaluru.He has more than 50international/ national
papers to his credit. He has served in various organisations in different levels. He has completed
his Doctorate from Visvesvaraya Technological University and is specialized in the area of fault
tolerance, signal processing.