In this paper, a dual frequency resonance antenna is analysed by introducing L-shaped slot in a
semi circular patch, different parametric studies have allows and the results in terms of return
loss and radiation pattern are given. It is observed that various antenna parameters are
obtained as a function of frequency for different value of slot length and width; it is easy to
adjust the upper and the lower band by varying these different antenna parameters. The coaxial
feed is used to excite the patch antenna. Theoretical results using Matlab are compared with the
simulated results obtained from Ansoft HFSS and shown to be in good agreement.
L shaped slot loaded semicircular patch antenna for wideband operation ijwmn
In this paper, a dual frequency resonance antenna is analysed by introducing L-shaped slot in a semi
circular patch, different parametric studies have allows and the results in terms of return loss and
radiation pattern are given. The results show that dual wide bands are achieved and a better impedance
matching for the upper and lower resonance are obtained. Also, it is observed that various antenna
parameters are obtained as a function of frequency for different value of slot length and width; it is easy to
adjust the upper and the lower band by varying these different antenna parameters. The coaxial feed is
used to excite the patch antenna. Theoretical results using Matlab are compared with the simulated results
obtained from Ansoft HFSS software and shown to be in good agreement.
Multi Slot Uwb Antennas to Minimize the Interferences from Wlan & X-Band Appl...IOSRJECE
In this paper designs of different UWB patch antennas with two rejected bands are given. The reference antenna consists of a rectangular patch etched on FR4- epoxy substrate with 50 Ω feed line and relative permittivity 4.4.. The simulated bandwidth with return loss (RL) ≥10 dB is 3.42–11.7 GHz. The rejected bands here are the WLAN and X-bands, achieved by inserting slots in the patch and the feed. The simulation results of the antennas indicate higher gain at the pass bands while a sharp drop at the rejected bands is seen. The second (reference) antenna consists of a hexagonal patch etched on FR4- epoxy substrate with 50 Ω feed line and relative permittivity 4.4,shows better return loss and rejection of the bands. The high frequency structure simulator (HFSS) is used to design and simulate the antennas behaviour over the different frequency ranges. Measurements confirm the antenna characteristic as predicted in the simulation with a slight shift in frequencies.
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.
L shaped slot loaded semicircular patch antenna for wideband operation ijwmn
In this paper, a dual frequency resonance antenna is analysed by introducing L-shaped slot in a semi
circular patch, different parametric studies have allows and the results in terms of return loss and
radiation pattern are given. The results show that dual wide bands are achieved and a better impedance
matching for the upper and lower resonance are obtained. Also, it is observed that various antenna
parameters are obtained as a function of frequency for different value of slot length and width; it is easy to
adjust the upper and the lower band by varying these different antenna parameters. The coaxial feed is
used to excite the patch antenna. Theoretical results using Matlab are compared with the simulated results
obtained from Ansoft HFSS software and shown to be in good agreement.
Multi Slot Uwb Antennas to Minimize the Interferences from Wlan & X-Band Appl...IOSRJECE
In this paper designs of different UWB patch antennas with two rejected bands are given. The reference antenna consists of a rectangular patch etched on FR4- epoxy substrate with 50 Ω feed line and relative permittivity 4.4.. The simulated bandwidth with return loss (RL) ≥10 dB is 3.42–11.7 GHz. The rejected bands here are the WLAN and X-bands, achieved by inserting slots in the patch and the feed. The simulation results of the antennas indicate higher gain at the pass bands while a sharp drop at the rejected bands is seen. The second (reference) antenna consists of a hexagonal patch etched on FR4- epoxy substrate with 50 Ω feed line and relative permittivity 4.4,shows better return loss and rejection of the bands. The high frequency structure simulator (HFSS) is used to design and simulate the antennas behaviour over the different frequency ranges. Measurements confirm the antenna characteristic as predicted in the simulation with a slight shift in frequencies.
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.
Proposed P-shaped Microstrip Antenna Array for Wireless Communication Applica...TELKOMNIKA JOURNAL
In this paper a P-shaped microstrip antenna array is proposed for X-band applications in the
frequency range (8.1567-9.3811) GHz .The gain obtained in this frequency range is about 8.305 dBi.
The reflection coefficient is less than - 10 dB in the above frequency range. The simulation results were
obtained for the optimum parameters using the CST software while the practical test was carried out using
Vector Network Analyzer (VNA). The microstrip antenna was manufactured using FR-4 substrate with
relative dielectric constant of 4.3 and loss tangent 푡푎푛 훿 = 0.002.The simulation and practical results were
compared. The size of the antenna array is (33 × 70 × 1.6) 푚푚3. This array is suitable for satellite
communication, radar application.
Wideband frequency reconfigurable metamaterial antenna design with double H s...journalBEEI
This paper presents the design of wideband frequency reconfigurable metamaterial antenna with double H slots. The design is based on the idea of composite right/left-handed transmission line (CRLH-TL) technique. Bandwidth enhancement was achieved by utilizing series left-handed capacitor CL transmission line parameter. The design has several outstanding advantages which include efficient bandwidth to cover many lower Application bands with multi frequency operation characteristics. A comprehensive analysis and simulation were done by using computer simulation technology (CST) software to determine the performance and efficiency of the proposed antenna. From the result obtained, the antenna aquired bandwidth range which covered (2.3-5.2) GHz which is equivalent to 77% fractional bandwidth. The wideband antenna was reconfigured by using frequency reconfiguration technique. From the reconfiguration results, the antenna can be switch from wideband to two single bands which resonate at 2.4 GHz and 4.2 GHz and to dual band which resonate at 2.4 GHz and 4.2 GHz. The realized peak gain at 2.4 GHz is 2.28 dBi and 2.58 dBi for E and H field respectively. The maximum efficiency of 96% was obtained. The antenna can be use for WLAN, proposed lower 5G band and cognitive radio system for frequency sencing.
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.
Performance of Groundplane Shaping in Four-Element Dualband MIMO AntennaTELKOMNIKA JOURNAL
This work presents performance of groundplane shaping and its effect in four element dualband
multiple input multiple output (MIMO) antenna. This proposed four element dualband MIMO antenna
consists of four bowtie dipole antenna which operates at 1800 MHz (low frequency) and 2300 MHz (high
frequency). This proposed four element dualband MIMO antenna occupies a 270 x 210 x 100 mm3 of FR
4 substrate. We use four types of groundplane pattern i.e. full groundplane, cornered spatial groundplane,
crossed middle groundplane, and spiral groundplane. These various grounplane patterns influence the
performance of main parameters of dualband MIMO antenna. Cornered spatial groundplane pattern yields
a largest bandwidth (VSWR ≤ 2) 282 MHz or 15.24% of center frequency at low frequency. Full
groundplane pattern creates 135.2 MHz at high frequency. In addition, cornered spatial groundplane
pattern also generates a lowest VSWR that is valued 1.21 at both low frequency and high frequency. The
S parameters, basically both cornered spatial and full groundplane pattern produce a better return loss
than two others. All four groundplane patterns deliver equally a mutual coupling parameter.The last, this
proposed four element dualband MIMO with various groundplane patterns gives a good farfield properties
i.e. gain, radiation pattern, H-E field.
How antenna properties affect MIMO performance? New antenna antenna parameters to understand for selecting/designing effective MIMO (4G/LTE) communications.
In this paper, three novel designs of broadband patch antenna are proposed. The first design propose
broadband slotted equilateral triangular patch antenna (ETPA) operating on frequency around 1800 MHz.
The second design propose broadband slotted right angle isosceles triangular patch antenna RAITPA operating on frequency around 2400 MHz. The third design proposes wideband V-Slotted and shorted edge ETPA antenna operating on frequency around 2400 MHz. The two powerful software HFSS and IE3D are used to simulate the proposed designs. Very good agreement between HFSS and IE3D software is obtained. The designs were chosen to fit modern wireless communication applications operate at Industrial Scientific Medical (ISM) bands such as Wireless local area networks (WLAN). Moreover, mounting the patch on thick substrate with loaded slot technique and loading the patch with a notch technique were used to enhance the bandwidth of those designs. Hence, large fractional bandwidth is obtained.
Multiband Circular Microstrip Patch Antenna for WLAN Applicationtheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...Saou-Wen Su
A high-gain, wide-beamwidth, six-loop-antenna MIMO system suited for wireless access points in the concurrent WLAN 2.4 and 5 GHz bands is presented. The antenna system mainly comprises an antenna ground plane and single-band loop antennas, among which the three antennas are designated for 2.4 and 5 GHz operation respectively. The antennas are set in a sequential, rotating arrangement on the ground plane with an equal inclination angle of 60° to form a symmetrical structure, and the 2.4 and 5 GHz loops are facing each other one by one. The experimental results show that good port isolation can be obtained between antenna ports. High-gain, directional radiation patterns with wide 3-dB beamwidth in elevation planes are also observed. Details of a design prototype are described and discussed in the paper.
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.
Design and analysis of microstrip antenna with zig-zag feeder for wireless co...journalBEEI
This paper is presented a microstrip antenna with a zig-zag feeder for wireless communication, it has a wideband frequency spectrum (2-14) GHz. The proposed antenna is designed with a zig zag feed line which gave a wideband frequency and acceptable gain (7.448-5.928) dB, this antenna has zig zag slots printed in the ground plane on a lower side of the dielectric substrate, a certain form tuning stub is used to increase the matching between the feeder in the top layer of the substrate and ground plane in the bottom, this stub has an elliptical slot to performance matching input impedance with the feed line. The feeding technique used to feed this antenna is a strip feed line of 50 Ω. Different types of techniques are used to enhance the bandwidth of this antenna to get a wideband suitable for the requirements of the UWB antenna such as adjust the feed point position of the feed line with a tuning stub. All the radiation properties of the presented antenna are tested such as bandwidth, radiation pattern, and, gain.
A Compact Dual Band Elliptical Microstrip Antenna for Ku/K Band Satellite App...IJECEIAES
This paper presents an original elliptical microstrip patch antenna is proposed for Ku/K band satellite applications. The proposed antenna has a simple structure, small size with dimensions of about 10×12×1.58 mm³. The antenna has been designed and simulated on an FR4 substrate with dielectric constant 4.4 and thickness of 1.58 mm. The design is simulated by two different electromagnetic solvers. The results from the measured data show that the antenna has two resonant frequencies that define 2 bandwidths, defined by a return loss of less than -10 dB, and are: (14.44 GHz, 829 MHz) and (21.05 GHz, 5126 MHz),with the gain 5.59 dB and 5.048 dB respectively. The proposed antenna can be used in many applications such as in satellite, and wireless communications.
Design of Square Miniaturized L Band Fractal AntennaEditor IJMTER
This paper introduces a new square patch miniaturized antenna operating in L band. The
design and analysis of the antenna is executed using IE3D electromagnetic simulation software using
substrate parameter of glass epoxy FR-4 substrate. In this paper, a Square patch of 10X10 mm2 is
investigated. In further improvements, parts of the patch are removed in two iterations to obtain a
miniaturized antenna. The proposed fractal antenna has a great potential of application and gives a
stable radiation performance in the frequency range of 1.333 GHz to 2 GHz.
Data Science - Part VIII - Artifical Neural NetworkDerek Kane
This lecture provides an overview of biological based learning in the brain and how to simulate this approach through the use of feed-forward artificial neural networks with back propagation. We will go through some methods of calibration and diagnostics and then apply the technique on three different data mining tasks: binary prediction, classification, and time series prediction.
Proposed P-shaped Microstrip Antenna Array for Wireless Communication Applica...TELKOMNIKA JOURNAL
In this paper a P-shaped microstrip antenna array is proposed for X-band applications in the
frequency range (8.1567-9.3811) GHz .The gain obtained in this frequency range is about 8.305 dBi.
The reflection coefficient is less than - 10 dB in the above frequency range. The simulation results were
obtained for the optimum parameters using the CST software while the practical test was carried out using
Vector Network Analyzer (VNA). The microstrip antenna was manufactured using FR-4 substrate with
relative dielectric constant of 4.3 and loss tangent 푡푎푛 훿 = 0.002.The simulation and practical results were
compared. The size of the antenna array is (33 × 70 × 1.6) 푚푚3. This array is suitable for satellite
communication, radar application.
Wideband frequency reconfigurable metamaterial antenna design with double H s...journalBEEI
This paper presents the design of wideband frequency reconfigurable metamaterial antenna with double H slots. The design is based on the idea of composite right/left-handed transmission line (CRLH-TL) technique. Bandwidth enhancement was achieved by utilizing series left-handed capacitor CL transmission line parameter. The design has several outstanding advantages which include efficient bandwidth to cover many lower Application bands with multi frequency operation characteristics. A comprehensive analysis and simulation were done by using computer simulation technology (CST) software to determine the performance and efficiency of the proposed antenna. From the result obtained, the antenna aquired bandwidth range which covered (2.3-5.2) GHz which is equivalent to 77% fractional bandwidth. The wideband antenna was reconfigured by using frequency reconfiguration technique. From the reconfiguration results, the antenna can be switch from wideband to two single bands which resonate at 2.4 GHz and 4.2 GHz and to dual band which resonate at 2.4 GHz and 4.2 GHz. The realized peak gain at 2.4 GHz is 2.28 dBi and 2.58 dBi for E and H field respectively. The maximum efficiency of 96% was obtained. The antenna can be use for WLAN, proposed lower 5G band and cognitive radio system for frequency sencing.
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.
Performance of Groundplane Shaping in Four-Element Dualband MIMO AntennaTELKOMNIKA JOURNAL
This work presents performance of groundplane shaping and its effect in four element dualband
multiple input multiple output (MIMO) antenna. This proposed four element dualband MIMO antenna
consists of four bowtie dipole antenna which operates at 1800 MHz (low frequency) and 2300 MHz (high
frequency). This proposed four element dualband MIMO antenna occupies a 270 x 210 x 100 mm3 of FR
4 substrate. We use four types of groundplane pattern i.e. full groundplane, cornered spatial groundplane,
crossed middle groundplane, and spiral groundplane. These various grounplane patterns influence the
performance of main parameters of dualband MIMO antenna. Cornered spatial groundplane pattern yields
a largest bandwidth (VSWR ≤ 2) 282 MHz or 15.24% of center frequency at low frequency. Full
groundplane pattern creates 135.2 MHz at high frequency. In addition, cornered spatial groundplane
pattern also generates a lowest VSWR that is valued 1.21 at both low frequency and high frequency. The
S parameters, basically both cornered spatial and full groundplane pattern produce a better return loss
than two others. All four groundplane patterns deliver equally a mutual coupling parameter.The last, this
proposed four element dualband MIMO with various groundplane patterns gives a good farfield properties
i.e. gain, radiation pattern, H-E field.
How antenna properties affect MIMO performance? New antenna antenna parameters to understand for selecting/designing effective MIMO (4G/LTE) communications.
In this paper, three novel designs of broadband patch antenna are proposed. The first design propose
broadband slotted equilateral triangular patch antenna (ETPA) operating on frequency around 1800 MHz.
The second design propose broadband slotted right angle isosceles triangular patch antenna RAITPA operating on frequency around 2400 MHz. The third design proposes wideband V-Slotted and shorted edge ETPA antenna operating on frequency around 2400 MHz. The two powerful software HFSS and IE3D are used to simulate the proposed designs. Very good agreement between HFSS and IE3D software is obtained. The designs were chosen to fit modern wireless communication applications operate at Industrial Scientific Medical (ISM) bands such as Wireless local area networks (WLAN). Moreover, mounting the patch on thick substrate with loaded slot technique and loading the patch with a notch technique were used to enhance the bandwidth of those designs. Hence, large fractional bandwidth is obtained.
Multiband Circular Microstrip Patch Antenna for WLAN Applicationtheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
Concurrent 2.4/5-GHz Multi-Loop MIMO Antennas with Wide 3-dB Beamwidth Radiat...Saou-Wen Su
A high-gain, wide-beamwidth, six-loop-antenna MIMO system suited for wireless access points in the concurrent WLAN 2.4 and 5 GHz bands is presented. The antenna system mainly comprises an antenna ground plane and single-band loop antennas, among which the three antennas are designated for 2.4 and 5 GHz operation respectively. The antennas are set in a sequential, rotating arrangement on the ground plane with an equal inclination angle of 60° to form a symmetrical structure, and the 2.4 and 5 GHz loops are facing each other one by one. The experimental results show that good port isolation can be obtained between antenna ports. High-gain, directional radiation patterns with wide 3-dB beamwidth in elevation planes are also observed. Details of a design prototype are described and discussed in the paper.
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.
Design and analysis of microstrip antenna with zig-zag feeder for wireless co...journalBEEI
This paper is presented a microstrip antenna with a zig-zag feeder for wireless communication, it has a wideband frequency spectrum (2-14) GHz. The proposed antenna is designed with a zig zag feed line which gave a wideband frequency and acceptable gain (7.448-5.928) dB, this antenna has zig zag slots printed in the ground plane on a lower side of the dielectric substrate, a certain form tuning stub is used to increase the matching between the feeder in the top layer of the substrate and ground plane in the bottom, this stub has an elliptical slot to performance matching input impedance with the feed line. The feeding technique used to feed this antenna is a strip feed line of 50 Ω. Different types of techniques are used to enhance the bandwidth of this antenna to get a wideband suitable for the requirements of the UWB antenna such as adjust the feed point position of the feed line with a tuning stub. All the radiation properties of the presented antenna are tested such as bandwidth, radiation pattern, and, gain.
A Compact Dual Band Elliptical Microstrip Antenna for Ku/K Band Satellite App...IJECEIAES
This paper presents an original elliptical microstrip patch antenna is proposed for Ku/K band satellite applications. The proposed antenna has a simple structure, small size with dimensions of about 10×12×1.58 mm³. The antenna has been designed and simulated on an FR4 substrate with dielectric constant 4.4 and thickness of 1.58 mm. The design is simulated by two different electromagnetic solvers. The results from the measured data show that the antenna has two resonant frequencies that define 2 bandwidths, defined by a return loss of less than -10 dB, and are: (14.44 GHz, 829 MHz) and (21.05 GHz, 5126 MHz),with the gain 5.59 dB and 5.048 dB respectively. The proposed antenna can be used in many applications such as in satellite, and wireless communications.
Design of Square Miniaturized L Band Fractal AntennaEditor IJMTER
This paper introduces a new square patch miniaturized antenna operating in L band. The
design and analysis of the antenna is executed using IE3D electromagnetic simulation software using
substrate parameter of glass epoxy FR-4 substrate. In this paper, a Square patch of 10X10 mm2 is
investigated. In further improvements, parts of the patch are removed in two iterations to obtain a
miniaturized antenna. The proposed fractal antenna has a great potential of application and gives a
stable radiation performance in the frequency range of 1.333 GHz to 2 GHz.
Data Science - Part VIII - Artifical Neural NetworkDerek Kane
This lecture provides an overview of biological based learning in the brain and how to simulate this approach through the use of feed-forward artificial neural networks with back propagation. We will go through some methods of calibration and diagnostics and then apply the technique on three different data mining tasks: binary prediction, classification, and time series prediction.
Mr. Koushal Kumar Has done his M.Tech degree in Computer Science and Engineering from Lovely Professional University, Jalandhar, India. He obtained his B.S.C and M.S.C in computer science from D.A.V College Amritsar Punjab. His area of research interests lies in Artificial Neural Networks, Soft computing, Computer Networks, Grid Computing, and data base management systems
This Presentation will give you an overview about Artificial Intelligence : definition, advantages , disadvantages , benefits , applications .
We hope it to be useful .
T- Shape Antenna Design for Microwave Band Applications IJEEE
It’s been studied fractal antennas shows promising future. There are numerous kinds of antenna, the thirst for excelling in this area is ever increasing. In this paper a Fractal based Antenna is designed to achieve reduced size and multiband. Fractal antenna is simulated using EM wave simulator like HFSS (High frequency structured simulator) and is designed and developed for multiple applications. The proposed antenna is experimentally realized using FR Epoxy substrate with dielectric constant 4.4 and thickness h= 1.56 mm with coaxial feeding. The patch has the dimensions of 2.5 cm 2.5 cm. An experimental result of this antenna shows multiband characteristics having resonances at frequencies such as 2.4 GHz , 6.8 GHz, 8 GHz, 10.8 GHz, 12.2 GHz,15.4 GHz with bandwidth of 230 MHz, 2 GHz, 600 MHz, 870 MHz and 2 GHz respectively. Further VSWR is also studied in this paper.
Microstrip patch antenna for pcs and wlaneSAT Journals
Abstract Due to development in wireless devices, it poses a new challenge for the design of an antenna in wireless communication. Patch antennas are well suited for various wireless application systems due to their low weight, low profile, versatility, conformability, low cost and low sensitivity to manufacturing tolerances. This paper present design, simulation of a rectangular micro strip antenna for WLAN and PCS. The aim of the work is to design reliable broadband, compact patch antenna for wireless devices. Antenna is proposed which is providing circular polarization, dual band, resonant frequencies at 1.9 GHz, 2.4 GHz. Key Words: Patch antenna, co-axial feeding, polarization, dual band, HFSS …
Design of a Dual-Band Microstrip Patch Antenna for GPS,WiMAX and WLANIOSR Journals
Abstract : The A multi band microstrip patch antenna has been designed for GPS,WiMAX and WLAN applications. The proposed antenna is designed by using substrate of RT duroid having permittivity of about 2.2 and loss tangent of 1.The substrate is having thickness of 6mm at which a trapezoidal patch antenna with V slot has been introduced in this paper. The designing results like S11 parameter return loss,VSWR and field pattern is plotted successfully. The obtained result is having a two band resonance with S11 less then -10dB and VSWR less than 2. So a dual band trapezoidal microstrip patch antenna has been designed and all results are plotted.Simmulating software used is IE3D. Keywords - V-shape slot, RT duroid, Dual band, WLAN, WiMAX,
Design of a Dual-Band Microstrip Patch Antenna for GPS,WiMAX and WLAN.IOSR Journals
The A multi band microstrip patch antenna has been designed for GPS,WiMAX and WLAN
applications. The proposed antenna is designed by using substrate of RT duroid having permittivity of about 2.2
and loss tangent of 1.The substrate is having thickness of 6mm at which a trapezoidal patch antenna with V slot
has been introduced in this paper. The designing results like S11 parameter return loss,VSWR and field pattern
is plotted successfully. The obtained result is having a two band resonance with S11 less then -10dB and VSWR
less than 2.
So a dual band trapezoidal microstrip patch antenna has been designed and all results are plotted.Simmulating
software used is IE3D.
Design & Simulation of E-Shaped Micro Strip Patch Antenna for GPS ApplicationIJERA Editor
Micro strip antennas are widely used in many applications due to their low Profile, low cost and ease of fabrication. In some applications it is desired to have a dual band or multiband characteristics. This paper presents the design and simulation of E-shape micro strip patch antenna with wideband operating frequency for wireless application. The shape will provide the broad bandwidth which is required in various application like remote sensing, biomedical application, mobile radio, satellite communication etc. The antenna design is an improvement from previous research and it is simulated using HFSS (High Frequency Structure Simulator) version 13.0 software. GPS provides specially coded satellite signals that can be processed with a GPS receiver enabling the receiver to compute position, velocity and time. Coaxial feed or probe feed technique is used. Parametric study was included to determine affect of design towards the antenna performance. Radiation performance of the designed antenna is simulated using the HFSS software version 13.0. The performance of the designed antenna was analyzed in term of bandwidth, gain, return loss, VSWR, and radiation pattern. The design was optimized to meet the best possible result. Substrate used was air which has a dielectric constant of 1.0006. The results show the wideband antenna is able to operate from 8.80 GHz to 13.49 GHz frequency band with optimum frequency at 8.73 GHz. Due to the compact area occupied. The pro-posed antenna is promising to be embedded within the different portable devices employing GPS applications.
Circularly polarized microstrip antenna with reactive load design for wireles...BASIM AL-SHAMMARI
This paper presents a design of microstrip antenna for IEEE 802.11b and for IEEE 802.11g using a nearly square patch antenna, excited by a standard miniature adapter probe feed line. The patch and ground plain are separated by a substrate; the radiating patch is loaded by a central shorting pin and feeding probe loaded by a series capacitor. This antenna has wide bandwidth in the frequency band of (WLAN) and with a return loss ≤ −10 dB from 2.4 GHz to 2.48 GHz exhibits circularly polarized far field radiation pattern.
The proposed antennas have been simulated and analyzed using method of moments (MoM) based software package Microwave Office 2008 v8.0. The results show that the bandwidth of the antenna increases by using reactive load. The simulated gain of the antenna is over 6 dB.
Circularly polarized microstrip antenna with reactive load design for wireles...BASIM AL-SHAMMARI
Abstract
This paper presents a design of microstrip antenna for IEEE 802.11b and for IEEE 802.11g using a nearly square patch antenna, excited by a standard miniature adapter probe feed line. The patch and ground plain are separated by a substrate; the radiating patch is loaded by a central shorting pin and feeding probe loaded by a series capacitor. This antenna has wide bandwidth in the frequency band of (WLAN) and with a return loss ≤ −10 dB from 2.4 GHz to 2.48 GHz exhibits circularly polarized far field radiation pattern.
The proposed antennas have been simulated and analyzed using method of moments (MoM) based software package Microwave Office 2008 v8.0. The results show that the bandwidth of the antenna increases by using reactive load. The simulated gain of the antenna is over 6 dB.
A CPW-Fed Wideband And Multiband Rectangular Microstrip Patch Antenna For Wir...IJMER
In this paper a rectangular patch antenna is proposed for both the multiband and wide band
operations with a coplanar waveguide (CPW) feeding. The proposed antenna has a size of
30x40x1.57mm3 including the ground plane and it is designed on FR4 substrate with a dielectric constant
of 4.4. The proposed antenna resonates at four distinct frequency bands, centered at 3.03, 4.84, 7.94 and
8.85 GHz. The return loss for the above mentioned frequency bands can be controlled and can be
adjusted with parametric analysis of E-slot. The various terms and parameters associated with the
antenna like return loss, radiation patterns, VSWR, current distributions and gain are analyzed and are
optimized by the simulations carried out using finite element method based Ansoft High Frequency
Structural Simulator(HFSS).
A small H-shaped microstrip patch antenna (MPA) with enhanced bandwidth is presented. The H-shaped antenna is first studied and then fully simulated by HFSS. A dual U slot H patch configuration is proposed to increase the narrow bandwidth, radiation efficiency and directivity. A novel H-shaped patch antenna suitable for wireless and satellite communications is presented. This paper presents the dual U slot H-shaped microstrip patch antenna feed by transmission line. The decrease in the prices of handheld devices and services has made available on the move internet and web services facility to the customers, small antennas requirement are increasing. In this paper H-shaped patch antenna is designed using FR4 substrate. The proposed modified H shaped antenna is designed and simulated using HFSS and caters to various wireless applications such as WiMAX, Wi-Fi, UMTS and Digital Multimedia Broadcasting (DMB) e.g. T V, etc.
Design and Analysis of Microstrip Antenna for CDMA Systems CommunicationIOSR Journals
Abstract: 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. Keywords - Microstrip Patch Antenna; E-shaped, CDMA systems communications; Coaxial Probe feed, IE3D
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.
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.
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2. 190 Computer Science & Information Technology (CS & IT)
2. L-SHAPED SLOT LOADED SEMICIRCULAR PATCH ANTENNA
The configuration of the proposed antenna is shown in Fig. 1. The semi circular microstrip patch
of dimensions W × L printed on the grounded substrate, which has a uniform thickness of h and
having a relative permittivity r and the dielectric material is assumed to be nonmagnetic with
permeability μ0. The analysis of the half disk patch antenna is similar to that of circular disk
patch, but the effective radius changes to 50% reduction in size [6]. The L-shaped slot with
dimension (Ls, Ws) is embedded in a semicircular patch (see Figure 2), the L-shaped patch semi-circular
antenna features dual-band behavior.
The patch is fed by a probe coaxial (50) which is easy to fabricate and has spurious radiation
[11]. In this feeding technique, the inner conductor of the coaxial connector extends from ground
through the substrate and is soldered to the radiating patch, while the outer conductor extends
from ground up to substrate.
Figure 1. Geometry of L-shaped slot loaded semicircular disk patch antenna
Figure 2. Dimensions of L-shaped slot loaded semicircular disk patch antenna
3. RESULTS AND DISCUSSION
Table 1 shows the different parameters of this proposed semicircular patch antenna loaded with
an L-shaped slot with r=1. It is worth noting that the feed can be placed at any desired location
inside the patch. In this study the feeding is accomplished with a probe coaxial located on the
axial of symmetry of the antenna in the point of coordinates x0 and y0.
3. Computer Science Information Technology (CS IT) 191
The simulation is done through programs in Matlab and Ansoft HFSS; we compare our results
with those available in the reference [6].
Table1. Design parameters of the proposed antenna.
Parameters R h Ls Ws Wn Ln (x0,y0)
Value (mm) 40 15 46.2 6 2.5 6 (12.6, 0)
The return loss is studied in function of frequency; the effect of different physical parameters on
the characteristics of the patch antenna is shown. From (figures 3a and b) given by Malab code
and HFSS software respectively it is clear that the proposed antenna resonate at two frequencies
with two band widths
That is seen from the (Figure3. A), given by Matlab2013 code that the lower resonant frequency
fr1=1.48GHzand the upper resonant frequency fr2=2.28GHz. The -10 dB band width of lower
and upper resonance frequencies are respectively BP1=14.86%, BP2=10.96%
From (Figure 3. b) obtained from HFSS14.0 software the two resonant frequencies are
fr1=1.42GHz; fr2=2.23GHz. The -10 dB band width of the previous lower and upper resonance
frequencies are respectively BP1=8.42%, BP2=19.74%.
The theoretical results using Matlab are found to be approximately in good agreement with the
simulated results obtained with Ansoft HFSS software and with [6].
The variation of return loss S11 according to slot length “Ls” is shown by Figure 4 obtained from
Matlab code, it is observed that the increase of the Ls, decreases both the lower and the upper
resonance frequencies.
For the variation of S11 according to slot width Ws shown by Figure 5 (obtained from Matlab
code), it is observed that the upper gap of the resonance frequencies decrease with increasing
value of the slot width. It can be seen clearly that the slot length Ls and slot width Ws have a
stronger effect on the lower resonance frequencies than the upper resonant frequencies.
Figures 6 and 7 show the variation of the return loss with frequency for different value of notch
length and width respectively, it is observed that the notch length Ln and notch width Wn have a
stronger effect on the upper resonance frequencies which increase with the increasing value of the
notch length and width length than the lower ones which slightly increases with the increase of
these parameters (Ln and Wn).
In Figure 8, it is shown that the feed locations have a stronger effect on both the lower and the
upper resonance frequencies; furthermore the obtained results show that the lower resonance
frequencies vary more significantly when the x0 change compared to the upper resonance
frequencies as well as the other physical parameters of the proposed antenna.
Radiation pattern of the antenna is shown in Figure 9 and 10 for both upper and lower resonance
in both principal planes E and H.
4. 192 Computer Science Information Technology (CS IT)
(a)
(b)
Figure 3. Comparative plot of return loss with frequency along with theoretical results obtained from
Matlab code (a) and simulated results obtained from Ansoft HFSS software (b).
Figure 4. Variation of return loss S11 with frequency obtained from Matlab code for different value of slot
length Ls.
5. Computer Science Information Technology (CS IT) 193
Figure 5. Variation of return loss S11 with frequency obtained from Matlab code for different value of slot
width Ws.
Figure 6. Variation of return loss with frequency for different value of notch length “L
Figure 7. Variation of return loss with frequency for different value of notch width “Wn”
6. 194 Computer Science Information Technology (CS IT)
Figure 8. Variation of return loss with frequency for different value of feed point “x0”
Figure 9. Radiation pattern of L-shaped slot loaded semicircular patch antenna
for both upper resonant frequency (blue line) and lower resonant frequency (red line) at E plane
Figure 10. Radiation pattern of L-shaped slot loaded semicircular patch antenna for both upper resonant
frequency (blue line) and lower resonant frequency (red line) at H plane
4. CONCLUSION
It is found that the proposed L-shaped slot loaded semicircular patch structure can operate at two
resonance frequencies and consequently this proposed antenna can be used for dual band
operation, also the effects of different physical parameters on the characteristics of this structure
are investigated, the proposed structure can be scaled to meet different frequencies of wireless
communication systems just by changing the dimension of the main antenna. Numerical results
indicate that both the upper and lower resonant frequencies and the band widths depend on the
7. Computer Science Information Technology (CS IT) 195
size of the slot dimensions, by properly choosing the location of feed point and the slots two
bands can be achieved and controlled. Furthermore, the lower resonant frequencies and band
widths are highly dependent on the slot dimensions as well as feed locations, however the upper
resonant frequencies and band widths are highly dependent on the notch dimensions. In addition,
the radiation pattern of both upper and lower resonant frequencies of the proposed antennas are
presented in the principal planes E and H.
REFERENCES
[1] J. A. Ansari, P. Singh and S. K. Dubey, (2008) “H-shaped stacked patch antenna for dual band
operation,” Progress In Electromagnetics Research B, Vol. 5, pp. 291–302.
[2] A. A. Razzaqi, M. Mustaqim and B. A. Khawaja, (2013) “Wideband E-Shaped Antenna Design for
WLAN Applications,” (ICET), IEEE 9th International Conference on Emerging Technologies, 9-10.
[3] S. Maci and G. B. Gentili, (1997) “Dual-Frequency Patch Antennas “IEEE Antennas Propagation
Magazine, Vol. 39, No. 6.
[4] I-F. Chen, C. M. Peng, and S-C. Liang, (2005) “Single Layer Printed Monopole Antenna for Dual
ISM-Band Operation,” IEEE Trans. On Antennas and Propaga., Vol.53, N. 4. pp. 1270–1273.
[5] J A. Ansari, S. K. Dubey, P. Singh, R. U. Khan, B. R.Vishvakarma, (2008) “Analysis of U-slot loaded
patch for dualband operation,” International Journal of Microwave and Optical Technology, Vol. 3, pp.
80-84.
[6] J. A. Ansari, A. Mishra, (2011) “Half U-slot loaded semicircular disk patch antenna for GSM mobile
phone and optical communications,” Progress In Electromagnetics Research C, Vol. 18, pp. 31-4.
[7] D. K. Srivastava, J. P. Saini, D. S. Chauhan, (2009) “Broadband stacked H-shaped patch antenna,”
International Journal of Recent Trends in Engineering, Vol. 2, pp. 385-389.
[8] E. Wang, J. Zheng, (2009) “A novel dual-band patch antenna for WLAN communication,” Progress In
Electromagnetics Research C, Vol. 6, pp. 93-102.
[9] A. Boufrioua, A. Benghalia, (2006) “Effects of the resistive patch and the uniaxial anisotropic substrate
on the resonant frequency and the scattering radar cross section of a rectangular microstrip antenna”
Elsevier, AST, Aerospace Science and Technology, Vol. 10, pp. 217-221.
[10] A. Boufrioua, (2014) “Bilayer microstrip patch antenna with loaded with U and half U-shaped slots,”
(ICMCS), IEEE International Conference on multimedia computing and systems, 14-16.
[11] I. J. Bahl and P. Bhartia, (1980) Microstrip antennas, Edited by M. A Dedham, Artech House.
AUTHORS
Amel Boufrioua was born in Constantine, Algeria; she received the B.S. degree in
Electronic Engineering in 1996, the M.S. and Ph.D. degrees in Microwave from
Electronics Department, Constantine University, Algeria, in 2000 and 2006
respectively. From February 2002 to December 2003, she was a Research
Assistant with Space Instrumentation Laboratory at the National Centre of Space
Techniques “CNTS” (Oran, Algeria), and then in November 2003, she was an
Assistant Professor at the Electronic Engineering Department (Constantine
University). Since 2008, she is a Lecturer with the electronic department,
University Constantine 1; her area of interest is microwave and microstrip
antennas. Dr. Amel Boufrioua is the corresponding author and can be contacted at:
boufrioua_amel@yahoo.fr