This document describes the simulation and design of a wideband E-shaped microstrip patch antenna that is conformed to a cylindrical surface. Simulation results using HFSS show that decreasing the substrate permittivity and increasing the substrate thickness can increase the antenna bandwidth. Bandwidths over 29 GHz were achieved with a thickness of 2.6 mm using lower permittivity substrates like RO3203 and Teflon. The compact size and ultra wideband performance of this cylindrical E-shaped patch antenna make it suitable for applications like high-speed wireless communication and avionics.
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.
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.
Analysis of Multi-Band Characteristics of Fractal Shape AntennaAM Publications
This paper put forward the relative study of rectangle shaped Microstrip patch antenna for two different dielectric substrate. If the substrate material’s dielectric constant is escalated, resulting in shrinking /depression of patch antenna. This depression of coordinate is result of back-and-forth in efficiency, bandwidth and impedance. FR4 and RT- Duroid are considered for determine the performances. Feeding technique used is coaxial probe-feed. Measurement like feed-point coordinates, width, length, and ground measurement for each substrate is determined. The model of antenna is performed using the Method of Moments based on IE3D Simulator from Zeland Software Inc, USA.
Conical Shaped Monopole Antenna for Multiband Wireless Applicationsiosrjce
IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of electronics and communication engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electronics and communication engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
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.
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 .
International Journal of Computational Engineering Research(IJCER)ijceronline
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
Parametric Variation Based Analysis AND Effective Design of Rectangular Patch...IOSR Journals
Abstract : This paperdevelops an understanding of creating and improving the design of microstripantenna by the performance analysis of resultsfromitsvarious configurationsrelating to rectangular patch microstripantenna. Furthermore, itaccommodates a simulated patch antennawith effective results for bluetooth applicationsatafrequency of 2.4GHz. The proposed antenna is not only designed on the formulated calculations but also analyzed on different sizes, positions and orientations of substrate, feeding point and slots respectively. Propagation parameters are greatly improved by amendments suggested by the analysis of the variation based studies provided by this paper. The initial resultsobtained using formulae based designs are compared with the ameliorated results to illustrate the effects of such variations on antenna parameters. The final antenna show significantly improved return losses of -46.7dB, VSWR of 1.0093, Bandwidth of 180MHz and a far field radiation pattern with a gain of 2.2782dB. The Antenna designed is optimized and interpreted with Ansoft HFSS 13.0 simulator. Keywords: Bluetooth, rectangular patch antenna, feedpoint, trial and error method, slot orientation, wide bandwidth
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.
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.
Analysis of Multi-Band Characteristics of Fractal Shape AntennaAM Publications
This paper put forward the relative study of rectangle shaped Microstrip patch antenna for two different dielectric substrate. If the substrate material’s dielectric constant is escalated, resulting in shrinking /depression of patch antenna. This depression of coordinate is result of back-and-forth in efficiency, bandwidth and impedance. FR4 and RT- Duroid are considered for determine the performances. Feeding technique used is coaxial probe-feed. Measurement like feed-point coordinates, width, length, and ground measurement for each substrate is determined. The model of antenna is performed using the Method of Moments based on IE3D Simulator from Zeland Software Inc, USA.
Conical Shaped Monopole Antenna for Multiband Wireless Applicationsiosrjce
IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of electronics and communication engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electronics and communication engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
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.
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 .
International Journal of Computational Engineering Research(IJCER)ijceronline
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
Parametric Variation Based Analysis AND Effective Design of Rectangular Patch...IOSR Journals
Abstract : This paperdevelops an understanding of creating and improving the design of microstripantenna by the performance analysis of resultsfromitsvarious configurationsrelating to rectangular patch microstripantenna. Furthermore, itaccommodates a simulated patch antennawith effective results for bluetooth applicationsatafrequency of 2.4GHz. The proposed antenna is not only designed on the formulated calculations but also analyzed on different sizes, positions and orientations of substrate, feeding point and slots respectively. Propagation parameters are greatly improved by amendments suggested by the analysis of the variation based studies provided by this paper. The initial resultsobtained using formulae based designs are compared with the ameliorated results to illustrate the effects of such variations on antenna parameters. The final antenna show significantly improved return losses of -46.7dB, VSWR of 1.0093, Bandwidth of 180MHz and a far field radiation pattern with a gain of 2.2782dB. The Antenna designed is optimized and interpreted with Ansoft HFSS 13.0 simulator. Keywords: Bluetooth, rectangular patch antenna, feedpoint, trial and error method, slot orientation, wide bandwidth
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Design and Improved Performance of Rectangular Micro strip Patch Antenna for ...IJERA Editor
In the resent year the development in communication system requires the development of low cast, minimum weight and low profile antennas that are capable of maintaining high performance over wide spectrum of frequency. This technological trend has focused much effort into the design of micro strip patch antenna. The object of this paper is to design an micro strip line fed rectangular micro strip patch antenna which operate in C-band at 5.33 GHz the antenna design is based on high frequency structure simulation (HFSS) software which is infinite element method based. This proposed antenna is design at height of 1.5 mm from the ground plane at frequency of 5.33GHz. The HFSS software has become the most versatile, easy to used, efficient and accurate simulation tool. After the simulation the performance characteristics such as input impedance, return loss, and VSWR are obtained
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.
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.
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.
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
Broadband Rhombus Shaped Microstrip Patch Antenna With U Shaped Slot For Wima...IJERA Editor
The aim of this paper is to enhance the bandwidth of Rhombus ShapedMicrostrip Patch Antenna.For this purpose, we cut „U‟ shaped slot in the proposed antenna geometry. The dielectric substrate material of the antenna is glass epoxy FR4 having εr=4.4 and loss tangent 0.025. The performance of the final modified antenna is compared with that of a conventional Rectangular Patch Microstrip Antenna and conventional Rhombus Shaped Microstrip Patch Antenna. The designed antenna has two resonant frequencies 5.20 GHz and 5.58 GHz. So this antenna is best suitable for the WiMax applications. The designed antenna offers much improved impedance bandwidth 22.32%. This is approximately six times higher than that in a conventional rectangular patch antenna (Bandwidth= 3.6%) having the same dimensions.
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.
A TRIPLE RECTANGULAR-SLOTTED MICROSTRIP PATCH ANTENNA FOR WLAN & WIMAX APPLIC...jantjournal
ABSTRACT
A triple rectangular slotted microstrip patch antenna is designed and investigated with and without slot using CST Software. By using the triple rectangular shaped slot the designed antenna operates at 2.4GHz (ranging from 2.3704 GHz (Gigahertz) to 2.4391 GHz at -10dB return loss) for WLAN (Wireless Local Area Network) and 3.6GHz (ranging from 3.5643 GHz to 3.6548 GHz at -10dB return loss) for WiMAX (Worldwide Interoperability for Microwave Access) applications having a maximum return loss -28.5dB and -25.4dB respectively. For the design of this antenna we have chosen FR-4 (lossy) as substrate having permittivity 4.3. The designed antenna has appreciable values of gain and directivity at both the frequencies. The proposed antenna works on the principle of excitation of the slots at the operating frequencies. The antenna was designed keeping in mind the two major Wireless standards i.e., WLAN and WiMAX bands of frequencies. The proposed triple-rectangular slots are unique in terms of its construction and have appreciable results at the operating frequencies.
KEYWORDS
MSPA, Rectangular slots, Return loss, WLAN, WiMAX
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 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 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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Design and Improved Performance of Rectangular Micro strip Patch Antenna for ...IJERA Editor
In the resent year the development in communication system requires the development of low cast, minimum weight and low profile antennas that are capable of maintaining high performance over wide spectrum of frequency. This technological trend has focused much effort into the design of micro strip patch antenna. The object of this paper is to design an micro strip line fed rectangular micro strip patch antenna which operate in C-band at 5.33 GHz the antenna design is based on high frequency structure simulation (HFSS) software which is infinite element method based. This proposed antenna is design at height of 1.5 mm from the ground plane at frequency of 5.33GHz. The HFSS software has become the most versatile, easy to used, efficient and accurate simulation tool. After the simulation the performance characteristics such as input impedance, return loss, and VSWR are obtained
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.
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.
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.
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
Broadband Rhombus Shaped Microstrip Patch Antenna With U Shaped Slot For Wima...IJERA Editor
The aim of this paper is to enhance the bandwidth of Rhombus ShapedMicrostrip Patch Antenna.For this purpose, we cut „U‟ shaped slot in the proposed antenna geometry. The dielectric substrate material of the antenna is glass epoxy FR4 having εr=4.4 and loss tangent 0.025. The performance of the final modified antenna is compared with that of a conventional Rectangular Patch Microstrip Antenna and conventional Rhombus Shaped Microstrip Patch Antenna. The designed antenna has two resonant frequencies 5.20 GHz and 5.58 GHz. So this antenna is best suitable for the WiMax applications. The designed antenna offers much improved impedance bandwidth 22.32%. This is approximately six times higher than that in a conventional rectangular patch antenna (Bandwidth= 3.6%) having the same dimensions.
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.
A TRIPLE RECTANGULAR-SLOTTED MICROSTRIP PATCH ANTENNA FOR WLAN & WIMAX APPLIC...jantjournal
ABSTRACT
A triple rectangular slotted microstrip patch antenna is designed and investigated with and without slot using CST Software. By using the triple rectangular shaped slot the designed antenna operates at 2.4GHz (ranging from 2.3704 GHz (Gigahertz) to 2.4391 GHz at -10dB return loss) for WLAN (Wireless Local Area Network) and 3.6GHz (ranging from 3.5643 GHz to 3.6548 GHz at -10dB return loss) for WiMAX (Worldwide Interoperability for Microwave Access) applications having a maximum return loss -28.5dB and -25.4dB respectively. For the design of this antenna we have chosen FR-4 (lossy) as substrate having permittivity 4.3. The designed antenna has appreciable values of gain and directivity at both the frequencies. The proposed antenna works on the principle of excitation of the slots at the operating frequencies. The antenna was designed keeping in mind the two major Wireless standards i.e., WLAN and WiMAX bands of frequencies. The proposed triple-rectangular slots are unique in terms of its construction and have appreciable results at the operating frequencies.
KEYWORDS
MSPA, Rectangular slots, Return loss, WLAN, WiMAX
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 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 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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
This is my presentation from PechaKucha Night Regina Vol. 2 which took place at the Artful Dodger in Regina, Saskatchewan on March 20th, 2014. The idea behind PechaKucha is that you have 20 slides/images and you talk for 20 seconds on each image. The slides are meant to have very minimal text as it is more about the image and the talk. I spoke about creativity in education related to high school business education and the Campbell Business program. Here are my slides... In the future I hope to narrate the slides so you get a feel for the presentation.
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.
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.
Analysis of Multi-Band Characteristics of Fractal Shape AntennaAM Publications
This paper put forward the relative study of rectangle shaped Microstrip patch antenna for two different dielectric substrate. If the substrate material’s dielectric constant is escalated, resulting in shrinking /depression of patch antenna. This depression of coordinate is result of back-and-forth in efficiency, bandwidth and impedance. FR4 and RT- Duroid are considered for determine the performances. Feeding technique used is coaxial probe-feed. Measurement like feed-point coordinates, width, length, and ground measurement for each substrate is determined. The model of antenna is performed using the Method of Moments based on IE3D Simulator from Zeland Software Inc, USA.
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
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.
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%).
A four-element UWB MIMO antenna using SRRs for application in satellite commu...IJECEIAES
This paper proposes a method for designing a new ultra wide band (UWB) multiple-input multiple-output (MIMO) antenna with two and four elements. First we presented an ultra-wide band antenna we studied these performances. Then, we studied the application of metamaterials to the design of MIMO antennas for miniaturization and the performance of antennas, in order to guarantee the proper functioning of the MIMO system with a much reduced separation distance between the radiating elements (λ/12), where the coupling can be very weak. The application of these circular double ring SRRs materials on the front plan of the antenna has contributed to the increasing of the antenna performance is studied in terms of S-Parameters, efficiency, diversity gain (DG), radiation properties and envelop correlation coefficient (ECC). It offers advantages such as the reduction of weight and congestion that is beneficial for their integration into satellite communications systems.
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.
REVIEW OF FRACTAL TECHNIQUES FOR DESIGNING MICROSTRIP PATCH ANTENNA FOR X BANDIJEEE
This paper on fractal techniques for designing microstrip antenna exhibits details of fractal geometries developed to get multiband behavior of patch resonator antenna. In this paper the review on various techniques of compactness by fractal geometry on microstrip patch antenna for X band used for satellite communication and radar application are presented.
Bandwidth Enhancement of Rectangular Patch Microstrip Antenna with parallel r...IJERA Editor
Many applications require very broadband antenna, but the narrow bandwidth of a microstrip antenna restricts its wide usage. The aim of this paper is to enhance the bandwidth of rectangular microstrip patch antenna. For this purpose, we cut three rectangular parallel slots in the proposed antenna. The dielectric substrate material of the antenna is glass epoxy FR4 having εr=4. 4 and loss tangent 0.025. The performance of the final modified antenna is compared with that of a conventional rectangular microstrip antenna. The designed antenna has two resonant frequencies 4.49 GHz and 4.90 GHz. So this antenna is best suitable for the WLAN applications and IMT-band frequency operations. The designed antenna offers much improved impedance bandwidth 19.7%. This is approximately six times higher than that in a conventional rectangular patch antenna (Bandwidth= 3%) having the same dimensions.
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed 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 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
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Le nuove frontiere dell'AI nell'RPA con UiPath Autopilot™UiPathCommunity
In questo evento online gratuito, organizzato dalla Community Italiana di UiPath, potrai esplorare le nuove funzionalità di Autopilot, il tool che integra l'Intelligenza Artificiale nei processi di sviluppo e utilizzo delle Automazioni.
📕 Vedremo insieme alcuni esempi dell'utilizzo di Autopilot in diversi tool della Suite UiPath:
Autopilot per Studio Web
Autopilot per Studio
Autopilot per Apps
Clipboard AI
GenAI applicata alla Document Understanding
👨🏫👨💻 Speakers:
Stefano Negro, UiPath MVPx3, RPA Tech Lead @ BSP Consultant
Flavio Martinelli, UiPath MVP 2023, Technical Account Manager @UiPath
Andrei Tasca, RPA Solutions Team Lead @NTT Data
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Epistemic Interaction - tuning interfaces to provide information for AI support
Fo3410371039
1. Rashmi Shukla, Sunil Patel / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp.1037-1039
1037 | P a g e
E-Shaped Wideband Conformal Antenna
Rashmi Shukla¹ Prof Sunil Patel²
M E IV Semester¹ Asst. Professor²
Jabalpur Engineering College Jabalpur
Abstract
A compact wideband antenna with
cylindrical conformal geometry is proposed . The
radiating element of this antenna consists of an E-
shaped patch that assumes a conformal
orientation relative to the cylindrical surface in
order to yield maximum bandwidth. The antenna
is fed by waveguide feeding connected to the
radiating patch at the longer side Radiation
properties of the proposed including far-field
patterns, axialratio, directivity, input impedance
and voltage standing waveratio (VSWR), are
studied simulating through HFSS (High
Frequency Simulation Software).Simulation
results are in good agreement, nearly equal E- and
H-plane far-field patterns withhigh degree of axial
symmetry over a bandwidth of more than 50%.
Also, over a bandwidth of about 24% the axial
ratio remains below 3 dB. The compact size and
ultra wideband performance of this antenna make
it advantageous for highspeed wireless
communication systems and avionics.
Index Terms-E shaped patch antennas, low profile
antennas,HFSS 13(High Frequency Simulation
Software),widebandantennas
I. Introduction
Wide Band conformal antennas with
minimum physical protrusions are important in many
modern radar and communication applications to
meet stringent aerodynamic and scattering
requirements.Conformal antennas are increasingly
being mounted on surfaces of air and land vehicles
.Their popularity stems from the fact that theyare
inexpensive to fabricate, present minimal drag to
airfoil surfaces, are aesthetically appealing, and are
amenable to placement inefficient array
configuration. A characteristic phenomenon of patch
antennas Conformal to curved platforms is the
dependence of resonant input impedance on surface
curvature [1]. Understanding how surface curvature
affects the input impedance and resonant frequency is
crucial for matching with the feed network and
efficient radiation. In light of this, it is vital that
conformal antennamodels include surface curvature
so that the effect of surfacegeometry on their
performance can be predicted more accurately.
As wireless systems continue to enjoy
increasedapplication and gain wider acceptance,
performance and cost constraints on the antennas
employed by these systems become more difficult to
meet. Antennas that are conformal or low profile and
that exhibit ultra wideband operation are of particular
interestfor many of these new systems. Concomitant
with increased performance levels is the need for
antenna designs with the potential for low cost
manufacturing. To address the requirements and the
severe constraints imposed by commercial
application of these antennas, new innovative antenna
design methodologies are required. To date, most
new wireless system antenna designs have been
derived from existing canonical designs such as the
monopoleand wavelength patch antennas.
Various feeding mechanism has been
studied this far such as microstrip line ,coaxial probe,
aperture coupling and proximity coupling [12], [13],
[14], [15], [16],[17][19].Here in this paper
acylindrically conformed version of E-shaped patch
antenna[20] isproposed which is the extended work
of previously proposed Eshaped planar antenna[20]
Waveguide feeding is proposed in thispaper. The
advantages of an antenna that resembles the shape of
theobject to which it is attached are obvious. Some
thinner varieties of microstrip that are commercially
available today can change from their planar shape to
represent some part of a cylinder [13]. Results are
compared for various substrate thickness and
materials. Withvarying permittivity and loss tangent
variation in the bandwidth is analyzed. With reduced
permittivity and loss tangent increase inbandwidth is
obtained. Also increasing substrate thickness leads to
higher bandwidth.
This paper is organized as follows. In
Section II, the structure of the proposed antenna is
described. In Section III, theproposed conformal
antenna concept on various dielectric substrate
isanalysed for the Wideband operation. Simulation
results are also presentedwith varying thickness of
substrate in section IV followed by the conclusion in
Section V.
II
In the previous work an E shaped patch
antenna proposed for wideband operation [20].The
work is extended here in this paper to Obtain
wideband operation while conforming on cylindrical
surface. Waveguide feeding is used and the E shaped
patch conformed to a cylindrical surfaceproviding
good deal for large bandwidth.Recently there have
been numerous methods of enhancing the bandwidth
of an antenna for example modifying the probe
feed,using multiple resonances, using folded patch
2. Rashmi Shukla, Sunil Patel / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp.1037-1039
1038 | P a g e
feed, or using the slotted radiating element. The slots
in the radiating element tend to have wideband
characteristics. It also suggests that slots introduce
the capacitive component in the input impedance to
counteract the inductive component of the probe.
Also to compensate the increasing inductive effect
due to the slots, thickness of the substrate is
increased. As we know that as thickness increases the
bandwidth increases accordingly. The input
impedance of about 42% is achieved. The slots
making it to look alike inverted E shape;
demonstrated a bandwidth enhancement by 30 %. E
shaped patch has dimensions as 15.7 x 9.9 mm.
Fig.1 E Shaped Patch
A. Simulation Setup
The antenna’s resonant properties were
predicted and optimized using High Structure
simulation software (HFSS) An soft version13.In
previous work [20] first of all simulation has been
setup for the basic rectangular micro-strip antenna
and the parameters are optimized for the best
impedance matching. Furthermore two parallel slots
are incorporated and optimized such that it closely
resembles E shape; this increases the gain of the
antenna. At last theWaveguide feeding is introduced
for attaining a required bandwidth, resonating
frequency and gain value [20].In this work the same
patch is conformed to a cylinder giving wideband
characteristics.
III
The substrate chosen should be such to
provide optimum bandwidth. To obtain Wide Band
operation, various materials are analysed. In this
analysis it is found that decreasing permittivity
increases bandwidth. At the same time loss tangent is
also considered. Best match of loss tangent and
permittivity provides best result in terms of Wide
Band. There should be small permittivity and at the
same time small dielectric loss tangent. Substrate
such as RogerRO3203,Teflon based(ɛ 2.08),Taconic
TY(ɛ 2.2) and hard Rubber(ɛ 3) are used. All the
respective results are compared in Fig.2
Fig2. S11 for various substrate materials
III
Various substrate thickness are studied in
this work to obtain best possible result. After
comparing various substrate thickness it is found that
with increase in substrate thickness the operation
bandwidth increases up to an extent and after that
reduced again.Corresponding results are shown here
in Fig.3
Fig 3. S11 for increasing thickness
In the figure above the plots are shown
where the bandwidth is increasing with increasing
thickness. While the next plot shows decreasing
bandwidth when substrate thickness is increased
further. At 2.6 mm thickness bandwidth upto 29 GHz
is obtained.
Fig4. Bandwidth reduced increasing thickness
IV. Conclusion
In this paper an E shaped patch is studied for
various substrate materials and thickness. In this
work the obtained simulated result conclude that the
increment in the substrate thickness leads to increase
in operational bandwidth to an extent and after that
further increment leads to reduction in
bandwidth.Permittivity of the substrate plays
important role as reducing it leads to bandwidth
0.00 20.00 40.00 60.00 80.00 100.00
Freq [GHz]
-45.00
-40.00
-35.00
-30.00
-25.00
-20.00
-15.00
-10.00
-5.00
0.00
Y1
HFSSDesign7Active S Parameter ANSOFT
m1
m2
m3
m4
material Bandwidth
RogerRO3203 25.8GHz
rubber 25.9GHz
Taconic 34.4GHz
teflon 34.5GHz
Curve Info
dB(ActiveS(1:1))
Setup1 : Sweep
dB(ActiveS(1:1))_1
Imported
dB(ActiveS(1:1))_2
Imported
dB(ActiveS(1:1))_3
Imported
Name X Y
m1 16.4000 -24.3148
m2 15.5000 -22.9100
m3 14.9000 -42.6509
m4 14.7000 -36.6065
0.00 20.00 40.00 60.00 80.00 100.00
Freq [GHz]
-30.00
-25.00
-20.00
-15.00
-10.00
-5.00
0.00
Y1
HFSSDesign7Active S Parameter ANSOFT
m2
Radius 60mm
subatrate thickness bandwidth
2.2mm 26.1GHz
2.4mm 26.9GHz
2.6mm 29.6GHz
m3
m4
Curve Info
dB(ActiveS(1:1))
Setup1 : Sweep
dB(ActiveS(1:1))_1
Imported
dB(ActiveS(1:1))_2
Imported
Name X Y
m2 42.2000 -17.5793
m3 37.7000 -23.1182
m4 41.4000 -26.9952
0.00 20.00 40.00 60.00 80.00 100.00
Freq [GHz]
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
Y1
HFSSDesign7Active S Parameter ANSOFT
m1
m2
m3
m4
2.8mm 28.5 GHz
3mm 28GHz
3.2mm 27.1GHz
3.4mm 25.8GHz
Curve Info
dB(ActiveS(1:1))
Setup1 : Sweep
dB(ActiveS(1:1))_1
Imported
dB(ActiveS(1:1))_2
Imported
dB(ActiveS(1:1))_3
Imported
Name X Y
m1 39.6000 -48.0920
m2 26.4000 -24.7013
m3 19.5000 -25.8903
m4 16.4000 -24.3148
3. Rashmi Shukla, Sunil Patel / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp.1037-1039
1039 | P a g e
enhancement. At same time loss tangent should also
take care of. Choosing lesser loss tangent is the best
option. That’s why good combination of loss tangent
and permittivity should be chosen.
For all thick substrate, low permittivity, small loss
tangent parallel slots to obtain E-shapedpatch are
some factors found suitable for large bandwidth and
thus provide Wide Band operation
REFERENCES
[1]. Ge, Y.; Esselle, K.P.; Bird, T.S.; , "E-shaped
patch antennas forhighspeed wireless
networks," Antennas and Propagation,
IEEE Transactions on , vol.52, no.12, pp.
3213- 3219, Dec. 2004
[2] B.-K. Ang and B.-K. Chung, "A wideband
e-shaped microstrip patchantenna for 5 - 6
GHz wireless communications," Progress In
Electro magnetics Research, Vol. 75, 397-
407, 2007.
[3] Yang, F.; Xue-Xia Zhang; Xiaoning Ye;
Rahmat-Samii, Y.; "Wide-bandE-shaped
patch antennas for wireless
communications," Antennas and
Propagation, IEEE Transactions on, vol.49,
no.7, pp.1094-1100, Jul 2001
[4] Hadian, A.M.; Hassani, H.R.;, "Wideband
Rectangular Microstrip Patch Antenna with
U-Slot," Antennas and Propagation, 2007.
Eu CAP 2007.TheSecond European
Conference on, vol., no., pp.1-5, 11-16 Nov.
2007
[5] Vedaprabhu, B.; Vinoy, K.J.; , "A double U-
slot patch antenna with dualWideband
characteristics," Communications (NCC),
2010 NationalConference on , vol., no.,
pp.1-4, 29-31 Jan. 2010
[6] Weigand, S.; Huff, G.H.; Pan, K.H.;
Bernhard, J.T.; , "Analysis anddesign of
broad-band single-layer rectangular U-slot
microstrip patchantennas," Antennas and
Propagation, IEEE Transactions on , vol.51,
no.3,pp. 457- 468, March 2003
[7] Verma, M.K.; Verma, S.; Dhubkarya, D.C.;
"Analysis and designing of E-shape
microstrip patch antenna for the wireless
communication systems," Emerging Trends
in Electronic and Photonic Devices &
Systems, 2009 ELECTRO '09. International
Conference on , vol., no., pp.324-327, 22-
24Dec. 2009
[8] Wang, B.-Z.; Xiao, S.; Wang, J.; ,
"Reconfigurable patch-antenna designfor
wideband wireless communication systems,"
Microwaves, Antennas &Propagation, IET ,
vol.1, no.2, pp.414-419, April 2007
[9] Cuming Microwave, "Flexible, Low Loss
Foam," C-Foam PF-2 and PF-4datasheet,
2011.
[10] Kumar, G., and K. P. Ray. Broadband
Microstrip Antennas.Boston:Artech House,
2003.
[11] Micro Lambda, "E+ SMA connectors &
Hermetic Seals," SMAconnectors datasheet,
2011.
[12] I.J.Bahl and P.Bhartia, Microstrip Antennas,
ArtechHouse,Dedham,MA,1980
[13] K.R.Carver and J.W.Mink,”Microstrip
Antenna Technology,”IEEE Trans.
Antennas propagate.,Vol. AP-29,No.
1,pp.25-27, January. d N. G.
Alexopoulos,”On the Modeling
ofElectromagnetically Coupled Microstrip
Antennas-The Printed
StripDipole,”IEEETrans.AntennasPropagat.,
Vol.AP-32,No. 11,pp.1179-1186,November
1984
[14] P. B. Katehi an
[15] J.R.James and P.S. Hall, and Handbook of
MicrostripAntennas,Vols. 1and 2, Peter
Peregrinus,London,UK,1989
[16] D.M.Pozar,”MicrostripAntennas,”
Proc.IEEE,Vol.80,No. 1 pp.79-81,January
1992.
[17] H. G. Oltman and D. A. Huebner,
“Electromagnetically CoupledMicrostrip
Dipoles,” IEEE, Trans. Antennas Propagat. ,
Vol. AP- 29, No1,pp 151-157, January 1981
[18] D.M.Pozar, “A Microstrip Antenna Aperture
Coupled to A MicrostripLine,” Electronic
Latters , Vol.21,pp 49-50, January 1985
[19] G. Gronau and I. Wolff, “ Aperture-
Coupling of a RactangularMicrostrip
Resonator, “ Electronic latters, Vol.22, pp
554-556, May 1986.
[20] Indu Bala Pauria, Sachin Kumar, Sandhya
Sharma “Design andSimulation of E-Shape
Microstrip Patch Antenna for
WidebandApplications” International
Journal of Soft Computing and
Engineering(IJSCE) ISSN: 2231-2307,
Volume-2, Issue-3, July 2012
[21] http://rsars.files.wordpress.com/2013/01/
multi-band-hf-antennas-part-1-v
[22] http://fens.sabanciuniv.edu/telecom/eng
/RWL/Multi-band.pdf
[23] http://www.users.on.net/~bcr/files/ backyard
wire antennaes.pdf
[24] http://tesla.unh.edu/courses/ece711/
refrense_material/s_param
[25] M. E. Bialkowski, Antennas and Associated
Systems for Mobile Satellite
Communications, Trivandrum, India
Research Signpost, 1997.