A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a low surface. It is a narrow band, wide-beam fed antenna fabricated by etching the antenna element pattern in metal trace bonded to the dielectric Substrate such as a printed circuit board with a continuous metal layer
bonded to the opposite side of the substrate which forms a ground plane. The main aim of this work is to design, develop and test the Printed Circuit antenna (Microstrip Patch antenna) suitable for use in L-band frequency range of 1-2GHz. This study also emphasizes on simulation of micro-strip patch antenna using IE3D software to simulate & study the radiation pattern & other radiation pattern parameters and comparison with specifications/requirements. Co-axial Feed technique was adopted and the location of the feed point was varied within the radiating patch to arrive at the point of minimum return loss. This work is also focused on characterization of fabricated antenna in view of parameters like VSWR, Antenna efficiency, Axial ratio, Gain and radiation pattern.
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.
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.
Microstrip Rectangular Monopole Antennas with Defected Ground for UWB Applica...IJECEIAES
This paper presents the design of new compact antennas for ultra wide band applications. Each antenna consists of a rectangular patch fed by 50Ω microstrip transmission line and the ground element is a defected ground structure (DGS). The aim of this study is to improve the bandwidth of these antennas by using DGS and the modification geometry of rectangular structure, which gives new compact antennas for UWB applications. The input impedance bandwidth of the antennas with S11<-10dB is more than 10GHz, from 3GHz to more than 14 GHz. The proposed antennas are investigated and optimized by using CST microwave studio, they are validated by using another electromagnetic solver Ansoft HFSS. The measured parameters present good agreement with simulation. The final antenna structures offer excellent performances for UWB system.
This document summarizes the design and simulation of an ultra wideband microstrip patch antenna with band-notched characteristics. The antenna was designed on an FR-4 substrate with a dielectric constant of 4.4 and thickness of 1.6 mm. A polygon slot was etched into the rectangular patch to reject interference from WLAN and WiMAX systems in the 5.147-5.855 GHz frequency band. Simulation results showed the antenna achieved a return loss lower than -10 dB from 3.3-12.8 GHz with band rejection characteristics as desired. Radiation patterns were omnidirectional across the operating bandwidth as required for UWB applications.
TRI-BAND MICROSTRIP PATCH ANTENNA FOR S-BAND NANO SATELLITE APPLICATION USING...ijsrd.com
It's the generation of tiny satellites which basically needs all its components to be miniature. The product proposed here is one such component, a tri band micro strip patch antenna operating at 2.6GHz, 3.6GHz S-band frequencies and 5.8 GHz. This real-time project work deals with a rectangular patch antenna operating at different frequencies working for various applications. The proposed S-Band Patch antenna is being designed and simulated using HFSS software. Obtaining optimum bandwidth efficiency by choosing suitable size without affecting any other parameters of the antenna is the challenge taken over in this project. The low profile, less weight patch antenna has antenna element of physical dimension 40x40x2.6mm .The substrate material being used is Alumina with dielectric constant 9.6. This antenna is designed to be used for TTC and payload downlink purposes. The designed patch array antenna meets all the parametric needs for a Polar orbiting satellite at Low Earth Orbit (LEO) region.
Conical Shaped Monopole Antenna for Multiband Wireless Applicationsiosrjce
This document describes a conical shaped monopole antenna designed for multiband wireless applications. The antenna is printed on low-cost FR4 substrate and measures 20x20mm with a thickness of 1.6mm. It is fed by a 4mm microstrip line and offers four operating bands: 3.35-3.75GHz, 5.1-5.25GHz, 6.85-7.1GHz, and 9.55-9.7GHz, which are suitable for S, C, and X band applications. Both simulated and measured results show good agreement, with gains between 2.12-2.65dBi across the bands and omnidirectional radiation patterns. The multiband behavior is achieved
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
The document compares the performance of two feeding techniques - coaxial probe feed and proximity coupled feed - for a circular microstrip patch antenna operating in the X-band frequency range. Simulation results show that the proximity coupled feed provides a 16.39% increase in bandwidth compared to the coaxial probe feed. The proximity coupled feed also results in better impedance matching and radiation efficiency for the circular microstrip patch antenna.
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.
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.
Microstrip Rectangular Monopole Antennas with Defected Ground for UWB Applica...IJECEIAES
This paper presents the design of new compact antennas for ultra wide band applications. Each antenna consists of a rectangular patch fed by 50Ω microstrip transmission line and the ground element is a defected ground structure (DGS). The aim of this study is to improve the bandwidth of these antennas by using DGS and the modification geometry of rectangular structure, which gives new compact antennas for UWB applications. The input impedance bandwidth of the antennas with S11<-10dB is more than 10GHz, from 3GHz to more than 14 GHz. The proposed antennas are investigated and optimized by using CST microwave studio, they are validated by using another electromagnetic solver Ansoft HFSS. The measured parameters present good agreement with simulation. The final antenna structures offer excellent performances for UWB system.
This document summarizes the design and simulation of an ultra wideband microstrip patch antenna with band-notched characteristics. The antenna was designed on an FR-4 substrate with a dielectric constant of 4.4 and thickness of 1.6 mm. A polygon slot was etched into the rectangular patch to reject interference from WLAN and WiMAX systems in the 5.147-5.855 GHz frequency band. Simulation results showed the antenna achieved a return loss lower than -10 dB from 3.3-12.8 GHz with band rejection characteristics as desired. Radiation patterns were omnidirectional across the operating bandwidth as required for UWB applications.
TRI-BAND MICROSTRIP PATCH ANTENNA FOR S-BAND NANO SATELLITE APPLICATION USING...ijsrd.com
It's the generation of tiny satellites which basically needs all its components to be miniature. The product proposed here is one such component, a tri band micro strip patch antenna operating at 2.6GHz, 3.6GHz S-band frequencies and 5.8 GHz. This real-time project work deals with a rectangular patch antenna operating at different frequencies working for various applications. The proposed S-Band Patch antenna is being designed and simulated using HFSS software. Obtaining optimum bandwidth efficiency by choosing suitable size without affecting any other parameters of the antenna is the challenge taken over in this project. The low profile, less weight patch antenna has antenna element of physical dimension 40x40x2.6mm .The substrate material being used is Alumina with dielectric constant 9.6. This antenna is designed to be used for TTC and payload downlink purposes. The designed patch array antenna meets all the parametric needs for a Polar orbiting satellite at Low Earth Orbit (LEO) region.
Conical Shaped Monopole Antenna for Multiband Wireless Applicationsiosrjce
This document describes a conical shaped monopole antenna designed for multiband wireless applications. The antenna is printed on low-cost FR4 substrate and measures 20x20mm with a thickness of 1.6mm. It is fed by a 4mm microstrip line and offers four operating bands: 3.35-3.75GHz, 5.1-5.25GHz, 6.85-7.1GHz, and 9.55-9.7GHz, which are suitable for S, C, and X band applications. Both simulated and measured results show good agreement, with gains between 2.12-2.65dBi across the bands and omnidirectional radiation patterns. The multiband behavior is achieved
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
The document compares the performance of two feeding techniques - coaxial probe feed and proximity coupled feed - for a circular microstrip patch antenna operating in the X-band frequency range. Simulation results show that the proximity coupled feed provides a 16.39% increase in bandwidth compared to the coaxial probe feed. The proximity coupled feed also results in better impedance matching and radiation efficiency for the circular microstrip patch antenna.
Study of Compact and Wideband Microstrip U-Slot Patch Antenna with DGS for Sa...Rammohan Mudgal
Microstrip patch antennas are used in many wireless
communication applications. This paper proposes the use of a
patch antenna with U-shaped slot and ground with reduced
dimension having DGS(Defected Ground Structure.) to achieve
wideband application with very low return loss. The objective of
this paper is to design, construct and fabricate microstrip antennas
suitable for satellite application that centred at frequency 6.3GHz.
The antenna must operate within the band of 6.3GHz band. This
band is currently being used in military applications. The antenna
is proposed to be used as a transmitting as well as receiving
antenna in wireless network and the mentioned applications. A
thick substrate with finite ground dimensions broadens the
bandwidth of the antenna. The proposed antenna reduced the
return loss as well as increases the bandwidth of the antenna
without increasing substrate height with the help of DGS.
Designing of Rectangular Microstrip Patch Antenna for C-Band ApplicationIJMER
Microstrip patch antenna becoming very popular day by day because of its ease of analysis, fabrication, low cast, light weight easy to feed and their attractive radiation characteristics. In this paper we proposed the designed of rectangular microstrip patch antenna to operate at frequency range 5-6 GHz. The simulation is carried out using high frequency simulation structure (HFSS) program.
The antenna is based on the modified epoxy substrate with dielectric constant of approximate 4.4. After simulation rectangular microstrip antenna performs characteristics such as VSWR & return loss smith chart
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
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.
Microstrip Antenna Design For Ultra-Wide Band Applicationsinventionjournals
1) The document describes the design of a microstrip patch antenna for ultra-wideband applications. Slots are added to the patch and ground plane to enhance the bandwidth.
2) Simulation results show the antenna achieves an impedance bandwidth of 2.2-5.6 GHz with return loss less than -10 dB. The gain is up to 6.5 dB and radiation patterns are dipole-like in the E-plane and omnidirectional in the H-plane.
3) The antenna design achieves good performance across the UWB frequency range and could be suitable for applications such as wireless monitors and printers.
Design of Planar Inverted F-Antenna for Multiband Applications IJEEE
1) The document describes the design of a Planar Inverted F-Antenna (PIFA) that resonates at 2.5 GHz with a 300MHz bandwidth.
2) Key parameters of the proposed antenna design are described, including dimensions of the patch, ground, substrate, and position of the feeding and shorting pins.
3) Simulation results using HFSS are presented, including return loss, radiation patterns, voltage standing wave ratio (VSWR), and electric and magnetic field distributions. The antenna achieves the desired resonance frequency and has a maximum gain of 28.5362 dBi.
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 of Dual Band Microstrip Antenna for Wi-Fi and WiMax ApplicationsTELKOMNIKA JOURNAL
In this paper, a dual band rectangular microstrip patch antenna with microstrip line is presented. The proposed antenna is designed on FR4 substrate with thickness 1.5 mm and relative permittivity 4.3. The antenna is designed to operate at 2.4/5.8 GHz bands for Wi-Fi/WiMax applications. The obtained return loss is -32.77dB at 2.4 GHz with 7.4% bandwidth and -25.955 dB at 5.8 GHz with 8.17% bandwidth. The practical and simulation result are computed. It is noted that there is a good agreement between the simulation and measured result (using vector network analyzer (VNA).
DESIGN AND DEVELOPMENT OF ITERATIVE SQUARE RING FRACTAL ANTENNA FOR DUAL BAND...jmicro
In this paper, iterative square ring fractal antenna is proposed, designed and developed for Wireless
application. The functional characteristics of the antenna such as return loss, VSWR, radiation pattern and
gain are evaluated. Compact size and multi-band compatibility are the major design requirements of
fractal antenna. The proposed antenna has the dimension of 20mm X 20mm and it supports dual band
which is designed in FR4 substrate. It resonates at 5.9 GHz and 8.8 GHz with the return loss of -33dB, -
16dB, respectively. Further, the performance of the antenna is analyzed by varying feed position, feed
width and substrate thickness. By the analysis, we concluded that the proposed antenna have better
performance at left feed position with 0.9mm of feed width at the substrate thickness of 3.2mm.
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
EFFECT OF DIFFERENT SYMMETRIC SLITS ON MICROSTRIP PATCH ANTENNAjmicro
In this paper, a basic linearly polarised microstrip square patch antenna operating at 2.4 GHz is
proposed. We have modified the basic microstrip square patch antenna with rectangular shape slits, V
shape slits and truncated corners to achieve circular polarization. Basically we have designed five
different antennas to meet the specification. The various antennas have been simulated, fabricated and the
performance has been tested on network analyser (Agilent Technologies: N9912A, SNMY51464189,
ROHDE & SCHWARZ: ZVL13, 9 KHz to 13.6GHz,). The simulated and tested performance shows close
agreement with each other. The various structures used in this study are microstrip square patch radiator,
microstrip square patch radiator with truncated corner, rectangular slits, truncated corner with
rectangular slits and V shape slits. The experiment results show rectangular slits with truncated corners in
the main square patch and rectangular slits in the main square patch provide better performance with
respect to the antenna parameters. Designed antenna is compact and provides circular polarization at the
required operating frequency of 2.4GHz with improved bandwidth and gain. The use of circularly
polarized antennas presents an attractive solution to achieve this polarization match which allows for
more flexibility in the angle between transmitting and receiving antennas. It gives the following
advantages such as reduction in the effect of multipath reflections, decrease in transmission losses,
enhancement of weather penetration and allowing any orientation to the communication system
This chapter provides an overview of fundamental antenna concepts and properties including polarization, radiation pattern, gain, bandwidth, and voltage standing wave ratio (VSWR). It then discusses microstrip patch antennas, including their structure and advantages. Finally, it introduces metamaterials and defected ground structures (DGS), which can be used to reduce antenna size by providing a negative refractive index substrate. The chapter establishes the background knowledge needed to understand the goals of developing a miniaturized antenna using metamaterial substrates with DGS.
The document provides information about a project guide on an ultra-wideband (UWB) antenna with electromagnetic band gap (EBG) structures. It discusses UWB technology and its features. It then describes EBG structures and their use as filters. The proposed antenna design is presented, which uses a right-angled EBG structure to provide dual band-notched capabilities at WiMAX and WLAN bands, while covering the 3-12.24 GHz UWB band. Simulation and measurement results are presented, showing the antenna meets design requirements with omni-directional radiation patterns and good return loss and voltage standing wave ratio performance.
Microstrip patch antennas are the most common form
of printed antennas. They became very popular due to their low
profile geometry, light weight and low cost. A Rectangular
Microstrip Patch Antenna with probe feed and substrate used is
Arlon AD260 has the relative permittivity of which is 2.6 is
designed and simulated using high frequency structure simulator
(HFSS). All the Parameters of this microsrip patch Antenna such
as bandwidth, S - parameter, Reflection loss and VSWR has been
found and plotted. The main objective of this work is to consider
the reactive loading effect on the patch and its effect towards the
improvement of the antenna characteristics, particularly the
radiation characteristics in principle plane (E and H) is
examined. As per theoretical approach reactive loading creates
either capacitive loading or inductive loading. Due to this effect
the antenna performance may be degraded or enhanced in terms
of efficiency, isolation, gain, impedance matching etc. The results
of this designed antenna are compared with the existing Micro
strip antenna
DESIGN OF A MINIATURE RECTANGULAR PATCH ANTENNA FOR KU BAND APPLICATIONSijasa
A significant portion of communication devices employs microstrip antennas because of their compact size,
low profile, and ability to conform to both planar and non-planar surfaces. To achieve this, we present a
miniature inset-fed rectangular patch antenna using partial ground plane for Ku band applications. The
proposed antenna design used an operating frequency of 15.5 GHz, a FR4 substrate with a dielectric
constant of 4.3, and a thickness of 1.4 mm. It is fed by a 50 Ω inset feedline. Computer simulation
technology (CST) software is used to design, simulate, and analyze. The simulation yields the antenna
performance parameters, including return loss (S11), bandwidth, VSWR, gain, directivity, and radiation
efficiency. The simulation findings revealed that the proposed antenna resonated at 15.5 GHz, with a
return loss of -22.312 dB, a bandwidth of 2.73 GHz (2730 MHz), VSWR of 1.17, a gain of 3.843 dBi, a
directivity of 5.926 dBi, and an antenna efficiency of -2.083 dB (61.901%).
This document provides a review of aperture coupled microstrip antennas. It begins with a brief history, noting the antenna was first introduced in 1985 to address issues with integrated phased arrays using a single substrate layer. The basic operating principles are then described, including how the independent selection of antenna and feed substrate materials allows shielding of the radiating aperture from the feed network. Applications include active arrays and theoretically zero cross polarization. Key development areas are also listed, such as impedance bandwidth improvements from 5-50% and many possible design variations.
DESIGN & PARAMETRIC STUDY OF RECTANGULAR SLOT MICROSTRIP PATCH ANTENNA FOR UW...IJEEE
A Microstrip fed antenna which consists of a
rectangular patch with rectangular shaped slot incorporated
into patch is presented for ultra wide band application with
enhanced bandwidth. The proposed antenna achieves an
impedance bandwidth of 8.9GHz (2.3-11.2GHz) with
VSWR< 2 for over the entire bandwidth.
This document summarizes a project on designing a dual band microstrip antenna. It provides an overview of microstrip antennas, including their basic principles and operation, common shapes and feeding techniques. It then describes the design of a circular dual band microstrip antenna with a T-shaped slot to achieve resonance at 2.3 GHz and 5.8 GHz. Simulation results showing return loss, VSWR, and radiation patterns are presented. Potential applications of dual band microstrip antennas in mobile satellite communication systems, wireless LANs, and GPS are also discussed.
Design of a Rectangular Microstrip Patch Antenna Using Inset Feed TechniqueIOSR Journals
Abstract : Today in the world of communication systems the most widely researched area is of wireless technology and a study of communication systems is incomplete without an understanding of the operation of the antennas. In the recent years of development in communication systems a need for the development of lightweight, compact and cost-effective antennas that are capable of maintaining high performance over a wide spectrum of frequencies. This technological trend has focused much effort into the design of a Micro strip patch antenna. In this work, the simulation tool of IE3D is used to study the performance and gain of the rectangular Microstrip patch antenna. The design and simulation of patch antennas is widely used in mobile cellular phones today, and our emphasis in this work is on optimization of a 2.4 GHz rectangular Microstrip patch antenna. The return loss and the various gain plots have been studied along with the radiation patterns. Keywords: Gain, Inset feed, Patch antenna, Radiation pattern, Return Loss.
Design of Series Feed Microstrip Patch Antenna Array using HFSS Simulatoridescitation
In this paper series feed Micro strip Patch Antenna
Array are designed and analyzed for WLAN application, which
operating at S-band frequency Range of 2.4 GHz. Antenna
arrays are used to achieve higher gain. Larger the number of
antenna elements, better the gain of antenna array would be
achieved. In this paper feeding element and matching line is
used to design the 4 X 1 micro strip patch antenna array.
Micro strip line feed and matching line are used to design
series Micro strip patch antenna array. The measured
radiation pattern and Return loss of 4X1 elements antenna
array are presented. An-soft HFSS simulator is used.
Design & Simulation of single frequency Rectangular Patch Antenna by Using HFSSIJERA Editor
This document describes the design and simulation of a single frequency rectangular patch antenna using HFSS simulation software. A rectangular patch antenna was designed on an RTduroid substrate with a dielectric constant of 2.2 and thickness of 3.2mm. A coaxial feed was inserted into the rectangular patch to simplify the design. The antenna was simulated using HFSS and a return loss of -31.4402dB was obtained at 2.4GHz, indicating it is applicable for SHF band applications. Key antenna parameters like return loss, VSWR, and 3D radiation pattern were evaluated through HFSS simulation to analyze the antenna performance.
Study of Compact and Wideband Microstrip U-Slot Patch Antenna with DGS for Sa...Rammohan Mudgal
Microstrip patch antennas are used in many wireless
communication applications. This paper proposes the use of a
patch antenna with U-shaped slot and ground with reduced
dimension having DGS(Defected Ground Structure.) to achieve
wideband application with very low return loss. The objective of
this paper is to design, construct and fabricate microstrip antennas
suitable for satellite application that centred at frequency 6.3GHz.
The antenna must operate within the band of 6.3GHz band. This
band is currently being used in military applications. The antenna
is proposed to be used as a transmitting as well as receiving
antenna in wireless network and the mentioned applications. A
thick substrate with finite ground dimensions broadens the
bandwidth of the antenna. The proposed antenna reduced the
return loss as well as increases the bandwidth of the antenna
without increasing substrate height with the help of DGS.
Designing of Rectangular Microstrip Patch Antenna for C-Band ApplicationIJMER
Microstrip patch antenna becoming very popular day by day because of its ease of analysis, fabrication, low cast, light weight easy to feed and their attractive radiation characteristics. In this paper we proposed the designed of rectangular microstrip patch antenna to operate at frequency range 5-6 GHz. The simulation is carried out using high frequency simulation structure (HFSS) program.
The antenna is based on the modified epoxy substrate with dielectric constant of approximate 4.4. After simulation rectangular microstrip antenna performs characteristics such as VSWR & return loss smith chart
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
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.
Microstrip Antenna Design For Ultra-Wide Band Applicationsinventionjournals
1) The document describes the design of a microstrip patch antenna for ultra-wideband applications. Slots are added to the patch and ground plane to enhance the bandwidth.
2) Simulation results show the antenna achieves an impedance bandwidth of 2.2-5.6 GHz with return loss less than -10 dB. The gain is up to 6.5 dB and radiation patterns are dipole-like in the E-plane and omnidirectional in the H-plane.
3) The antenna design achieves good performance across the UWB frequency range and could be suitable for applications such as wireless monitors and printers.
Design of Planar Inverted F-Antenna for Multiband Applications IJEEE
1) The document describes the design of a Planar Inverted F-Antenna (PIFA) that resonates at 2.5 GHz with a 300MHz bandwidth.
2) Key parameters of the proposed antenna design are described, including dimensions of the patch, ground, substrate, and position of the feeding and shorting pins.
3) Simulation results using HFSS are presented, including return loss, radiation patterns, voltage standing wave ratio (VSWR), and electric and magnetic field distributions. The antenna achieves the desired resonance frequency and has a maximum gain of 28.5362 dBi.
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 of Dual Band Microstrip Antenna for Wi-Fi and WiMax ApplicationsTELKOMNIKA JOURNAL
In this paper, a dual band rectangular microstrip patch antenna with microstrip line is presented. The proposed antenna is designed on FR4 substrate with thickness 1.5 mm and relative permittivity 4.3. The antenna is designed to operate at 2.4/5.8 GHz bands for Wi-Fi/WiMax applications. The obtained return loss is -32.77dB at 2.4 GHz with 7.4% bandwidth and -25.955 dB at 5.8 GHz with 8.17% bandwidth. The practical and simulation result are computed. It is noted that there is a good agreement between the simulation and measured result (using vector network analyzer (VNA).
DESIGN AND DEVELOPMENT OF ITERATIVE SQUARE RING FRACTAL ANTENNA FOR DUAL BAND...jmicro
In this paper, iterative square ring fractal antenna is proposed, designed and developed for Wireless
application. The functional characteristics of the antenna such as return loss, VSWR, radiation pattern and
gain are evaluated. Compact size and multi-band compatibility are the major design requirements of
fractal antenna. The proposed antenna has the dimension of 20mm X 20mm and it supports dual band
which is designed in FR4 substrate. It resonates at 5.9 GHz and 8.8 GHz with the return loss of -33dB, -
16dB, respectively. Further, the performance of the antenna is analyzed by varying feed position, feed
width and substrate thickness. By the analysis, we concluded that the proposed antenna have better
performance at left feed position with 0.9mm of feed width at the substrate thickness of 3.2mm.
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
EFFECT OF DIFFERENT SYMMETRIC SLITS ON MICROSTRIP PATCH ANTENNAjmicro
In this paper, a basic linearly polarised microstrip square patch antenna operating at 2.4 GHz is
proposed. We have modified the basic microstrip square patch antenna with rectangular shape slits, V
shape slits and truncated corners to achieve circular polarization. Basically we have designed five
different antennas to meet the specification. The various antennas have been simulated, fabricated and the
performance has been tested on network analyser (Agilent Technologies: N9912A, SNMY51464189,
ROHDE & SCHWARZ: ZVL13, 9 KHz to 13.6GHz,). The simulated and tested performance shows close
agreement with each other. The various structures used in this study are microstrip square patch radiator,
microstrip square patch radiator with truncated corner, rectangular slits, truncated corner with
rectangular slits and V shape slits. The experiment results show rectangular slits with truncated corners in
the main square patch and rectangular slits in the main square patch provide better performance with
respect to the antenna parameters. Designed antenna is compact and provides circular polarization at the
required operating frequency of 2.4GHz with improved bandwidth and gain. The use of circularly
polarized antennas presents an attractive solution to achieve this polarization match which allows for
more flexibility in the angle between transmitting and receiving antennas. It gives the following
advantages such as reduction in the effect of multipath reflections, decrease in transmission losses,
enhancement of weather penetration and allowing any orientation to the communication system
This chapter provides an overview of fundamental antenna concepts and properties including polarization, radiation pattern, gain, bandwidth, and voltage standing wave ratio (VSWR). It then discusses microstrip patch antennas, including their structure and advantages. Finally, it introduces metamaterials and defected ground structures (DGS), which can be used to reduce antenna size by providing a negative refractive index substrate. The chapter establishes the background knowledge needed to understand the goals of developing a miniaturized antenna using metamaterial substrates with DGS.
The document provides information about a project guide on an ultra-wideband (UWB) antenna with electromagnetic band gap (EBG) structures. It discusses UWB technology and its features. It then describes EBG structures and their use as filters. The proposed antenna design is presented, which uses a right-angled EBG structure to provide dual band-notched capabilities at WiMAX and WLAN bands, while covering the 3-12.24 GHz UWB band. Simulation and measurement results are presented, showing the antenna meets design requirements with omni-directional radiation patterns and good return loss and voltage standing wave ratio performance.
Microstrip patch antennas are the most common form
of printed antennas. They became very popular due to their low
profile geometry, light weight and low cost. A Rectangular
Microstrip Patch Antenna with probe feed and substrate used is
Arlon AD260 has the relative permittivity of which is 2.6 is
designed and simulated using high frequency structure simulator
(HFSS). All the Parameters of this microsrip patch Antenna such
as bandwidth, S - parameter, Reflection loss and VSWR has been
found and plotted. The main objective of this work is to consider
the reactive loading effect on the patch and its effect towards the
improvement of the antenna characteristics, particularly the
radiation characteristics in principle plane (E and H) is
examined. As per theoretical approach reactive loading creates
either capacitive loading or inductive loading. Due to this effect
the antenna performance may be degraded or enhanced in terms
of efficiency, isolation, gain, impedance matching etc. The results
of this designed antenna are compared with the existing Micro
strip antenna
DESIGN OF A MINIATURE RECTANGULAR PATCH ANTENNA FOR KU BAND APPLICATIONSijasa
A significant portion of communication devices employs microstrip antennas because of their compact size,
low profile, and ability to conform to both planar and non-planar surfaces. To achieve this, we present a
miniature inset-fed rectangular patch antenna using partial ground plane for Ku band applications. The
proposed antenna design used an operating frequency of 15.5 GHz, a FR4 substrate with a dielectric
constant of 4.3, and a thickness of 1.4 mm. It is fed by a 50 Ω inset feedline. Computer simulation
technology (CST) software is used to design, simulate, and analyze. The simulation yields the antenna
performance parameters, including return loss (S11), bandwidth, VSWR, gain, directivity, and radiation
efficiency. The simulation findings revealed that the proposed antenna resonated at 15.5 GHz, with a
return loss of -22.312 dB, a bandwidth of 2.73 GHz (2730 MHz), VSWR of 1.17, a gain of 3.843 dBi, a
directivity of 5.926 dBi, and an antenna efficiency of -2.083 dB (61.901%).
This document provides a review of aperture coupled microstrip antennas. It begins with a brief history, noting the antenna was first introduced in 1985 to address issues with integrated phased arrays using a single substrate layer. The basic operating principles are then described, including how the independent selection of antenna and feed substrate materials allows shielding of the radiating aperture from the feed network. Applications include active arrays and theoretically zero cross polarization. Key development areas are also listed, such as impedance bandwidth improvements from 5-50% and many possible design variations.
DESIGN & PARAMETRIC STUDY OF RECTANGULAR SLOT MICROSTRIP PATCH ANTENNA FOR UW...IJEEE
A Microstrip fed antenna which consists of a
rectangular patch with rectangular shaped slot incorporated
into patch is presented for ultra wide band application with
enhanced bandwidth. The proposed antenna achieves an
impedance bandwidth of 8.9GHz (2.3-11.2GHz) with
VSWR< 2 for over the entire bandwidth.
This document summarizes a project on designing a dual band microstrip antenna. It provides an overview of microstrip antennas, including their basic principles and operation, common shapes and feeding techniques. It then describes the design of a circular dual band microstrip antenna with a T-shaped slot to achieve resonance at 2.3 GHz and 5.8 GHz. Simulation results showing return loss, VSWR, and radiation patterns are presented. Potential applications of dual band microstrip antennas in mobile satellite communication systems, wireless LANs, and GPS are also discussed.
Design of a Rectangular Microstrip Patch Antenna Using Inset Feed TechniqueIOSR Journals
Abstract : Today in the world of communication systems the most widely researched area is of wireless technology and a study of communication systems is incomplete without an understanding of the operation of the antennas. In the recent years of development in communication systems a need for the development of lightweight, compact and cost-effective antennas that are capable of maintaining high performance over a wide spectrum of frequencies. This technological trend has focused much effort into the design of a Micro strip patch antenna. In this work, the simulation tool of IE3D is used to study the performance and gain of the rectangular Microstrip patch antenna. The design and simulation of patch antennas is widely used in mobile cellular phones today, and our emphasis in this work is on optimization of a 2.4 GHz rectangular Microstrip patch antenna. The return loss and the various gain plots have been studied along with the radiation patterns. Keywords: Gain, Inset feed, Patch antenna, Radiation pattern, Return Loss.
Design of Series Feed Microstrip Patch Antenna Array using HFSS Simulatoridescitation
In this paper series feed Micro strip Patch Antenna
Array are designed and analyzed for WLAN application, which
operating at S-band frequency Range of 2.4 GHz. Antenna
arrays are used to achieve higher gain. Larger the number of
antenna elements, better the gain of antenna array would be
achieved. In this paper feeding element and matching line is
used to design the 4 X 1 micro strip patch antenna array.
Micro strip line feed and matching line are used to design
series Micro strip patch antenna array. The measured
radiation pattern and Return loss of 4X1 elements antenna
array are presented. An-soft HFSS simulator is used.
Design & Simulation of single frequency Rectangular Patch Antenna by Using HFSSIJERA Editor
This document describes the design and simulation of a single frequency rectangular patch antenna using HFSS simulation software. A rectangular patch antenna was designed on an RTduroid substrate with a dielectric constant of 2.2 and thickness of 3.2mm. A coaxial feed was inserted into the rectangular patch to simplify the design. The antenna was simulated using HFSS and a return loss of -31.4402dB was obtained at 2.4GHz, indicating it is applicable for SHF band applications. Key antenna parameters like return loss, VSWR, and 3D radiation pattern were evaluated through HFSS simulation to analyze the antenna performance.
Parametric Analysis and Design Optimization Investigation of a Single Layer P...IRJET Journal
This document presents the design, simulation, and testing of a single layer proximity fed microstrip patch array antenna with a slotted ground plane. Key points:
1. The antenna configuration consists of four rectangular microstrip patches coupled to a central microstrip feed line, with an arrow-shaped slot etched in the ground plane to improve coupling.
2. Additional patches are directly coupled to the edges of the driven patches to enhance bandwidth and gain, resulting in a novel dual-band array antenna.
3. Parametric simulations were performed to understand the effects of antenna dimensions on performance. The antenna demonstrated resonances at 2.468GHz and 3.616GHz with measured gains of 9.4 dBi
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch AntennaIOSR Journals
Microstrip antennas or patch antennas are popular for their attractive features such as low profile,
low weight, low cost, ease of fabrication and integration with RF devices. Micro strip antennas have been found
favorable because they are inexpensive to manufacture and compatible with monolithic microwave integrated
circuit designs (MMIC). They are usually employed at UHF and higher frequencies because the size of the
antenna is directly tied to the wavelength at the resonance frequency. A Microstrip or patch antenna is a
narrowband, wide-beam antenna fabricated by etching the antenna element pattern in metal trace bonded to an
insulating dielectric substrate with a continuous metal layer bonded to the opposite side of the substrate which
forms a ground plane. The most commonly employed microstrip antenna is a rectangular patch.
The major disadvantages of Microstrip antennas are lower gain and very narrow bandwidth. Microstrip patch
antennas have some drawbacks of low efficiency, narrow bandwidth (3-6%) of the central frequency. Millimeter
wave technology being an emerging area is still much undeveloped. As micro strip antennas have found wide
variety of application areas, a number of techniques are evolved to improve its limited bandwidth. A good
approach to improve the bandwidth is increasing the thickness of substrate supporting the micro strip patch.
However problems exist on the ability to effectively feed the patch on a thick substrate and the radiation
efficiency can degrade with increasing substrate thickness. A substantial research needs to be done in this area
as its applications are numerous. The radiation patterns and S11 performance are used for the analysis of the
different configurations. In the present endeavor a rectangular patch antenna is designed on thick substrate and simulated using MATLAB software and configuration on different dielectric susbstrates was used .
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch AntennaIOSR Journals
Abstract : Microstrip antennas or patch antennas are popular for their attractive features such as low profile, low weight, low cost, ease of fabrication and integration with RF devices. Micro strip antennas have been found favorable because they are inexpensive to manufacture and compatible with monolithic microwave integrated circuit designs (MMIC). They are usually employed at UHF and higher frequencies because the size of the antenna is directly tied to the wavelength at the resonance frequency. A Microstrip or patch antenna is a narrowband, wide-beam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate with a continuous metal layer bonded to the opposite side of the substrate which forms a ground plane. The most commonly employed microstrip antenna is a rectangular patch. The major disadvantages of Microstrip antennas are lower gain and very narrow bandwidth. Microstrip patch antennas have some drawbacks of low efficiency, narrow bandwidth (3-6%) of the central frequency. Millimeter wave technology being an emerging area is still much undeveloped. As micro strip antennas have found wide variety of application areas, a number of techniques are evolved to improve its limited bandwidth. A good approach to improve the bandwidth is increasing the thickness of substrate supporting the micro strip patch. However problems exist on the ability to effectively feed the patch on a thick substrate and the radiation efficiency can degrade with increasing substrate thickness. A substantial research needs to be done in this area as its applications are numerous. The radiation patterns and S11 performance are used for the analysis of the different configurations. In the present endeavor a rectangular patch antenna is designed on thick substrate and simulated using MATLAB software and configuration on different dielectric susbstrates was used . Keywords - bandwidth, dielectric constant, Microstrip antennas, substrate thickness
A Review of Various Shapes Microstrip Patch Antenna for High Frequency Applic...Deep Gokani
The document discusses various shaped microstrip patch antennas for high frequency applications. It describes the geometry and simulation results of 7 different antenna shapes: C-shaped, U-shaped, E-shaped, L-shaped, H-shaped, P-shaped, and W-shaped. Each antenna shape is designed on an FR4 substrate using electromagnetic simulation software. The results show that U-shaped and E-shaped antennas provide the highest bandwidth of 5-30%, making them suitable for single band applications, while L-shaped antennas can operate over multiple bands.
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.
An Aperture Coupled Printed Antenna for Broadband Radio ServicesIRJET Journal
1) The document describes the design and simulation of an aperture coupled microstrip patch antenna for broadband radio services.
2) The antenna is designed to resonate at 2.56 GHz using an aperture coupling technique for improved isolation and lower cross polarization.
3) Simulation results show the antenna has a return loss of -24.5 dB at 2.56 GHz with a 140 MHz bandwidth, a maximum gain of 3.08 dBi, and radiation patterns suitable for broadband applications.
Reconfigurable C and Ku band antenna Using DuelpatchIRJET Journal
This document describes the design of a reconfigurable C and Ku band antenna using a dual-patch structure. The antenna can operate at 4, 5, 10, and 12 GHz bands by using two C-slots and two PIN diode switches to independently control the patch elements. When one patch is switched on and the other off, different frequency sets are achieved. Simulations show the antenna achieves 500 MHz bandwidth in the C-band and 1 GHz bandwidth in the Ku-band. The compact antenna size of 80x60x1.57mm makes it suitable for applications such as satellite TV reception and WLAN. Challenges in the design include impedance matching between elements and mutual coupling between closely spaced patches.
This document describes the design and simulation of a square microstrip patch antenna for S-band applications at 2.6 GHz. The antenna was designed using Ansoft HFSS simulation software. Key parameters of the antenna include a patch size of 41.2mm x 41.2mm, substrate size of 100mm x 90mm made from Rogers RT duroid 5880 dielectric material. An inset feed technique was used with a feed width of 1.8mm and length of 20mm. Simulation results showed a gain of 11.5dB and return loss of -32.11dB at the resonant frequency. Radiation patterns exhibited maximum gain in the broadside direction of 1.87dBi. The proposed antenna design achieved good
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 Single Microstrip Patch Antenna with Proximity Coupler...IOSR Journals
This document describes the design and analysis of a single microstrip patch antenna with proximity coupler fed technique for wireless LAN applications at 2.4 GHz. The antenna was designed using CST Microwave Studio simulation software. The antenna consists of a rectangular patch on one substrate proximity coupled to a microstrip feed line on another substrate. The length of the patch was optimized to achieve a resonant frequency of 2.4 GHz. Simulation results showed return losses below -10 dB and VSWR below 1.6 at 2.4 GHz, indicating good impedance matching. The antenna achieved a maximum gain of 7.4 dB and radiation patterns that were suitable for wireless LAN applications.
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DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
1. International Journal of Antennas (JANT) Vol.3, No.1/2/3, July 2017
DOI: 10.5121/jant.2017.3301 1
DESIGN AND DEVELOPMENT OF MICROSTRIP
PATCH ANTENNA
Aishwarya Sudarsan and Apeksha Prabhu
Department of Electronics and Communication Engineering,
NHCE, Bangalore, India
ABSTRACT
A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a low
surface. It is a narrow band, wide-beam fed antenna fabricated by etching the antenna element pattern in
metal trace bonded to the dielectric Substrate such as a printed circuit board with a continuous metal layer
bonded to the opposite side of the substrate which forms a ground plane. The main aim of this work is to
design, develop and test the Printed Circuit antenna (Microstrip Patch antenna) suitable for use in L-band
frequency range of 1-2GHz. This study also emphasizes on simulation of micro-strip patch antenna using
IE3D software to simulate & study the radiation pattern & other radiation pattern parameters and
comparison with specifications/requirements. Co-axial Feed technique was adopted and the location of the
feed point was varied within the radiating patch to arrive at the point of minimum return loss. This work is
also focused on characterization of fabricated antenna in view of parameters like VSWR, Antenna
efficiency, Axial ratio, Gain and radiation pattern.
KEYWORDS
Microstrip Patch Antenna, VSWR, Radiation Pattern, Co-axial feed
1. INTRODUCTION
A rectangular microstrip patch antenna, suitable for use in L-band frequency range of 1-2 GHz
was designed and modeled using IE3D software. The simulated antenna was analyzed using co-
axial feed technique and various antenna parameters like S11, VSWR, Antenna Gain and
Antenna Efficiency were determined for the random feed point location. Also, the feed point was
varied within the radiating patch to arrive at the optimized feed location for minimum return loss.
Further, a microstrip patch antenna was fabricated using the dimensions of the simulated antenna.
The fabricated antenna was tested for obtaining the radiation pattern and other antenna
parameters using standard anechoic chamber testing set up at ISAC/ISRO. The antenna
parameters were compared between simulation results and experimental results and the antenna
was qualified for use in L-band frequency range with minimum return loss and maximum
bandwidth.
A microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate and a
ground plane on the other side [6].
2. International Journal of Antennas (JANT) Vol.3, No.1/2/3, July 2017
2
Figure 1. Basic Structure of Microstrip Patch Antenna
Due to the fringing effects, the patch of the microstrip antenna looks greater than its physical
dimensions as shown in Fig.2. Where the dimensions of the patch along its length have been
extended on each end by ∆L.
Figure 2. Physical and effective lengths of Rectangular Microstrip patch Antenna
The length and width of the patch determines the characteristics of the antenna. The dimensions
of a microstrip patch antenna depend on the resonant frequency and value of the dielectric
constant.
2. LITERATURE STUDIES
A Micro strip antenna has drawn the attention of researchers over the past work because of their
many attractive features. The micro strip patch structures are relatively easy to manufacture and
have turned micro strip analysis into an extensive research problem. Research on micro strip
antenna in the 21st century aimed at size reduction, increasing gain, wide bandwidth, multiple
functionality and system-level integration. [2-3]. With the wide spread proliferation of wireless
communication technology in recent years, the demand for compact, low profile and broadband
antennas has increased significantly. To meet the requirement, the micro strip patch antenna have
been proposed because of its low profile, light weight and low cost.[1] Micro strip Patch Antenna
consists of a conducting rectangular patch of width "W" and length "L" on one side of dielectric
substrate of thickness "h" and dielectric constant "εr". Common micro strip antenna shapes are
square, rectangular, circular and elliptical, but any continuous shape is possible.
There are several techniques available to feed or transmit Electromagnetic energy to a micro strip
patch antenna. The role of feeding is very important in case of efficient operation of antenna to
3. International Journal of Antennas (JANT) Vol.3, No.1/2/3, July 2017
3
improve the antenna input impedance matching. The feeding techniques used in the micro strip
antenna are divided into two important classes as given below:-
Contacting Feed: - In this method, the patch is directly fed with RF power using the contacting
element such as micro strip line or coaxial line. The most commonly used contacting fed methods
are Micro strip Feed and Co-Axial Feed.
Non-Contacting Feed: - In this method, the patch is not directly fed with the RF power but instead
power is transferred to the path from the feed line through electromagnetic coupling. The most
commonly used non- contacting feed methods are Aperture Coupled feed and Proximity Coupled
Feed.
The role of feeding is very important in case of efficient Operation of antenna to improve the
antenna input Impedance matching. [7] The various types of feeding Techniques are:-
1. Microstrip Line Feed
2. Inset Feed
3. Co-axial Feed
4. Aperture Coupled Feed
5. Proximity Coupled Feed
A. Microstrip line Feed:-
In this type of feed technique, a conducting strip is connected directly to the edge of the
Microstrip patch. The conducting strip is smaller in width as compared to the patch and this kind
of feed arrangement has the advantage that the feed can be etched on the same substrate to
provide a planar structure. [8]
B. Inset Feed
In is a type of microstrip line feeding technique, in which the width of conducting strip is small as
compared to the patch and has the advantage that the feed can provide a planar structure. [2] The
purpose of the inset cut in the patch is to match the impedance of the feed line to the patch input
impedance without the need for any additional matching element. This can be achieved by
properly adjusting the inset cut position and dimensions. [6]
C. Co-axial Feed technique
The coaxial probe feeding is a very common technique used for feeding Micro strip patch
antennas. The inner Conductor of the coaxial cable extends through the dielectric and is soldered
to the radiating metal patch, while the outer conductor is connected to the ground plane. The
advantage of this feeding scheme is that the feed can be placed at any desired location on the
patch in order to match cable impedance with the antenna input impedance.[4]The main aim to
use probe feeding is it enhances the gain, provides narrow bandwidth and impedance matching.
[5]
4. International Journal of Antennas (JANT) Vol.3, No.1/2/3, July 2017
4
D. Aperture coupled Feed
In this type of feed technique, the radiating patch and the microstrip feed line are separated by the
ground plane. Coupling between the patch and the feed line is made through a slot or an aperture
in the ground plane.
E. Proximity coupled Feed
This type of feed technique is also called as the electromagnetic coupling scheme. Two dielectric
substrates are used such that the feed line is between the two substrates and the radiating patch is
on top of the upper substrate. The main advantage of this feed technique is that it eliminates
spurious feed radiation and provides very high bandwidth (as high as 13), due to overall increase
in the thickness of the microstrip patch antenna.
3. ANTENNA DESIGN EQUATIONS
The initial microstrip patch antenna design parameters, Patch length L, Patch Width W, feed
location (X,Y), from the centre of the patch, ground plane length and ground plane width were
estimated using the following design equations with frequency fo=1.176GHz, Ɛr=2.33 and
h=1.6mm.
3.1 Width of Antenna (W)
Where the light speed ‘c’ is taken as 3x108
m/s. On Substitution, the width (W) of the antenna
was calculated as 98.8mm.
3.2 Length of Antenna (L)
The effective dielectric constant is given by:
Where,
h - height of the substrate
W - Width of the antenna
ɛr - Relative Permittivity
On substitution, the effective dielectric constant (Ɛreff) was calculated to be 2.273.
The extended length of the patch (∆L) is given by,
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We obtained Leff = 84.6mm.
4. ANTENNA SPECIFICATIONS
The Rectangular Microstrip Patch Antenna is designed on RT-5270(Glass Epoxy FR4 Grade)
Substrate. The Parameter Specifications of Rectangular Strip Antenna are mentioned in the
following table.
Table 1: Antenna Specifications
Sl. No Specification Design Values
1 Resonant Frequency 1.176GHz
2 Band Width fo ± 10 GHz
3 Gain >5dB
4 Axial Ratio <4dB
5 Return Loss Better than 15dB
5. MODELING OF ANTENNA USING IE3D SOFTWARE
The aim of the work is to investigate the minimum return loss point and axial ratio of 1(0db) for
completely circular polarization. Accordingly, feed point was varied within the radiating patch
and four cases are discussed for better axial ratio bandwidth and minimum return loss coefficient.
Co-axial Probe Technique is employed for feeding RF power to the antenna. Co- axial feed can
be placed at any desired location in order to match with its input impedance. This feed method is
easy to fabricate and has low spurious radiation. A rectangular Patch of length 'L' and Width 'W'
is designed. The Location of probe is defined by the X- Coordinate and the Y-Coordinate. The
Probe is in direct contact with the antenna and it is located at the point of minimum return loss.
Figure 3. Rectangular Microstrip Patch Antenna using Coaxial Feed
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6. SIMULATED RESULTS & DISCUSSION
The model is simulated and obtained results for the antenna parameters, S11, VSWR, Gain,
Efficiency and Bandwidth, are compared with those required for the design Specifications. In the
Initial run, the simulation results for the antenna Parameters do not match well with the antenna
parameters of the design Specifications. Therefore, the antenna model is improved by changing
any one of the antenna model parameters, the patch dimensions or ground dimensions or the feed
location and the resulting model is simulated and obtained results are compared again with the
antenna parameters required.
The final microstrip patch antenna model dimensions and feed location, obtained using the
technique of iteratively improving antenna model, is given in the Table-2.
At dimensions L=81.8mm and W=82.7mm and at feed point X=11 and Y=-13
We obtained AR= 0.37 and S11 = -27.439dB, Gain = 6.25dB, Antenna Efficiency = 78.16%
Figure 4. S11 Vs Frequency
Figure 5. Axial Ratio Vs Frequency
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Figure 6. Total Field Gain Vs Frequency
Figure 7. Total Field Gain Vs Frequency
The following table contains the final Antenna design parameters obtained from simulated
results.
Table 2: Final Antenna Parameters
Sl.No Parameter Name Design Values
1 Dielectric Constant 2.33
2 Resonant Frequency 1.176GHz
3 Substrate Height 1.6mm
4 Width of Antenna 82.7mm
5 Length of Antenna 81.8mm
6 Co-axial X-Coordinate 11mm
7 Co-axial Y-Coordinate -13mm
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7. FABRICATION OF MICROSTRIP PATCH ANTENNA
This section describes the fabrication of microstrip Patch Antenna designed and simulated in the
earlier section. The dimensions of the designed Microstrip Patch Antenna are given in the Table-
1.
The Microstrip Patch Antenna dimensions obtained from the simulation used to fabricate the
antenna. The antenna is fabricated using Etching Technique as per standard fabrication
procedures adopted for the fabrication of Microstrip patch antennas. The Fabricated antenna is
shown in the Fig11 & Fig12.
Materials used for the fabrication of Microstrip Patch antenna are
1. PCB (Glass Epoxy, FR-4)
2. Copper Sheet
3. N-connector
Initially, the FR-4 substrate was cleaned thoroughly using acetone and dried as the dust particles
or impurities present on the substrate may alter the resonant frequency. Further, Copper sheet was
bonded to the substrate using suitable adhesive and cured. Finally, copper cladded PCB board
was drilled to provide the feed point and the drilled portion was provided with N-connector for
feeding the RF power.
Figure 8. Front View- Fabricated Antenna
Figure 9. Rear View- Fabricated Antenna
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8. TESTING AND MEASUREMENT
The return loss, bandwidth and VSWR for the fabricated patch antenna are measured using
network analyzer. The E-plane and H-Plane patterns are measured in a far-field test set up
(Anechoic Chamber) with a standard gain antenna (Horn Antenna) as a transmitting antenna and
the antenna under test as a receiving antenna mounted on a pedestal. A typical measurement
layout is as shown in the figure.
Figure 10. Typical Measurement Layout for Antenna Radiation Pattern
Figure 11. Radiation Pattern of Fabricated Antenna
The antenna was rotated by ±90 to obtain RHCP and LHCP and the radiation pattern obtained is
as shown in the figure. A purely polarized antenna will have low cross polarized radiation. A
measure of how purely polarized an antenna is, is the cross polarization level. It is defined as the
difference in decibels between the maximum radiation intensity of the co and cross polarizations
respectively.
The gain of the fabricated antenna was found out by comparing with standard Reference Horn
antenna with the gain of 9.6dB.
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Figure 12. S11 Vs Frequency Curve of Fabricated Antenna
From the above curve, it is observed that the value for S11 Parameter is-29.752 dB at the resonant
frequency of 1.176GHz.
Figure 13. Frequency Bandwidth Curve of Fabricated Antenna
From the above curve, it is observed that the frequency bandwidth falls within the range of
1.167GHz to 1.186GHz.
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Figure 14. VSWR Vs Frequency curve of Fabricated Antenna
From the above curve, it is inferred that the Voltage Standing Wave Ratio (VSWR) of1.03 is
obtained at the frequency of 1.176GHz.
9. COMPARISON OF SIMULATION RESULTS VS EXPERIMENTAL
RESULTS
For Patch dimensions of L=81.8mm and W=82.7mm and at feed point X=11 and Y=-13, the
antenna parameters are compared between simulated results and experimental results.
Table 3. Comparison of Simulation Results and Experimental Results
Sl.No Antenna Parameters Simulated Results Experimental Results
1 S11 -27.439 dB -29.752dB
2 Voltage Standing Wave Ratio (VSWR) 1.088 1.0327
3 Antenna Gain 6.25dB 6.3dB
4 Axial Ratio 0.37 3.95
5 Bandwidth 1.176 GHz to
1.186 GHz
1.167 GHz to
1.186 GHz
From the above table, it is observed that the Experimental values of fabricated antenna are in
proximal to the simulated results.
10. CONCLUSION
A Rectangular Microstrip Patch Antenna, resonant at frequency fo = 1.176GHz, is designed and
simulated on glass epoxy FR-4 substrate. The microstrip patch dimensions obtained from the
simulation are used to fabricate the antenna. The simulation of rectangular Microstrip Patch
antenna with coaxial feeding technique is performed by using IE3D software for the specific
frequency of 1.176 GHz. The feed point was varied to arrive at the point of minimum return loss
and at the feed location of X=11 and Y=-13, the S11 value of -27.439dB and axial ratio of 0.37dB
was obtained and the same was compared to the measured values of the fabricated antenna.
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REFERENCES
[1] N. Herscovici. 1998. New considerations in the design of micro strip antennas. IEEE Transactions on
Antennas and Propagation, AP-46, 6 (Jun. 1998), 807-812.
[2] D. Sanchez-Hernandez and I. D. Robertson. 1996. A Survey of Broad band Micro strip Patch
Antennas. Microwave Journal, (Sep.1996), 60-84.
[3] Dipak K. Neog, Shyam S. Pattnaik, Dhruba. C. Panda, Swapna Devi, Bonomali Khuntia, and Malaya
Dutta, “Design of a Wideband Micro strip Antenna and the Use of Artificial Neural Networks in
Parameter Calculation”, IEEE Antennas and Propagation Magazine, Vol. 47, No.3, June 2005.
[4] C. A. Balanis, Antenna Theory, Analysis and Design, John Wiley and Sons, New York.
[5] Prof. Mahesh M. Gadag, Mr. Dundesh S. Kamshetty, Mr. SureshL. Yogi “Design of Different
Feeding Techniques of Rectangular Micro strip Antenna for 2.4GHz RFID Applications Using
IE3D”, Proc. of the Intl. Conf. on Advances in Computer, Electronics and Electrical Engineering.
[6] www.mtiwe.com
[7] Jagdish. M. Rathod, Member, IACSIT, IETE (I), IE (I), BES (I)“Comparative Study of Micro strip
Patch Antenna for Wireless Communication Application”, International Journal of Innovation,
Management and Technology, Vol. 1, No. 2, June 2010 ISSN:2010-0248
[8] www.antennatheory.com
[9] Antennas (from theory to Practice)-Yi Huang and Kevin Boyle
AUTHORS
Aishwarya Sudarsan is currently pursuing her Bachelor's degree in Electronic
and communication Engineering in New Horizon College of Engineering at
Bangalore, INDIA. Her research Interests include Antennas, VLSI, Embedded
Systems and power electronics. She presented many papers in technical seminars
and symposiums.