This document summarizes research on different techniques for miniaturizing antennas for wireless applications. It discusses using slots in microstrip patch antennas, high permittivity dielectric substrates, and magneto-dielectric substrates. Simulation results show that magneto-dielectric substrates provide the best miniaturization while maintaining good bandwidth and radiation efficiency compared to other techniques. The document concludes that magneto-dielectric materials present opportunities for designing small, high-performance antennas.
Propagation Effects and Their Impact on Satellite-Earth Links: Introduction,
Quantifying attenuation and depolarization,
Propagation effects that are not associated with hydrometeors, Prediction of rain attenuation,
Prediction of XPD,
Propagation impairments countermeasures.
COMSATS Institute of Information and Technology, Sahiwal
Department of Electrical Engineering
Prepared By: Umaiz Ahmad and Yasir Zulfiqar
CONTACT:
+92-321-7899091
+92-336-0006247
Using Metamaterials as Optical Perfect AbsorberSepehr A. Benis
Article review and presentation on basics of using metamaterials as optical perfect absorbers
Metamaterial Course Final Project ( Optional Graduate Course )
Dr. Leyla Yousefi
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.
A Body Area Network is formally defined by IEEE 802.15 as, "a communication
standard optimized for low power devices and operation on, in or around the human body
(but not limited to humans) to serve a variety of applications including medical, consumer
electronics / personal entertainment and other" [IEEE 802.15]. In more common terms, a
Body Area Network is a system of devices in close proximity to a person’s body that
cooperate for the benefit of the user.
This presentation was presented by Nawal KIshore Kundan under the guidance of Ms. Ancy Zacharia.
Miniaturized Microstrip Patch Antenna Array at 3.8 GHz for WiMax Applicationiosrjce
The aim of this work is to miniaturize microstrip patch antenna array resonating at 3.8 GHz
suitable for WiMax application using defected ground structure (DGS).The DGS has been employed to shift the
resonance frequency of an initial microstrip antenna array from 5.2 GHz to 3.8 GHz by disturbing the
antenna’s current distribution. The proposed DGS is integrated in the ground plane under the patch antenna
array for size reduction. Finally, the miniaturization up to 45% with respect to the conventional microstrip
antenna is successfully accomplished. A prototype of the antenna was fabricated with the RT-Duriod substrate.
This technique has been validated experimentally and measured results were found to be in good agreement
with simulated results.
Propagation Effects and Their Impact on Satellite-Earth Links: Introduction,
Quantifying attenuation and depolarization,
Propagation effects that are not associated with hydrometeors, Prediction of rain attenuation,
Prediction of XPD,
Propagation impairments countermeasures.
COMSATS Institute of Information and Technology, Sahiwal
Department of Electrical Engineering
Prepared By: Umaiz Ahmad and Yasir Zulfiqar
CONTACT:
+92-321-7899091
+92-336-0006247
Using Metamaterials as Optical Perfect AbsorberSepehr A. Benis
Article review and presentation on basics of using metamaterials as optical perfect absorbers
Metamaterial Course Final Project ( Optional Graduate Course )
Dr. Leyla Yousefi
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.
A Body Area Network is formally defined by IEEE 802.15 as, "a communication
standard optimized for low power devices and operation on, in or around the human body
(but not limited to humans) to serve a variety of applications including medical, consumer
electronics / personal entertainment and other" [IEEE 802.15]. In more common terms, a
Body Area Network is a system of devices in close proximity to a person’s body that
cooperate for the benefit of the user.
This presentation was presented by Nawal KIshore Kundan under the guidance of Ms. Ancy Zacharia.
Miniaturized Microstrip Patch Antenna Array at 3.8 GHz for WiMax Applicationiosrjce
The aim of this work is to miniaturize microstrip patch antenna array resonating at 3.8 GHz
suitable for WiMax application using defected ground structure (DGS).The DGS has been employed to shift the
resonance frequency of an initial microstrip antenna array from 5.2 GHz to 3.8 GHz by disturbing the
antenna’s current distribution. The proposed DGS is integrated in the ground plane under the patch antenna
array for size reduction. Finally, the miniaturization up to 45% with respect to the conventional microstrip
antenna is successfully accomplished. A prototype of the antenna was fabricated with the RT-Duriod substrate.
This technique has been validated experimentally and measured results were found to be in good agreement
with simulated results.
Antenna Details for iPhone 5 and iPhone 4GWillie LU
Antenna performance in mobile phone is much more important than antenna design due to the very small size of antenna RF in a compact mobile phone device. Through near 20 years' research and development in RF, transceiver and antenna technology, Prof. Willie W. Lu carefully analyzed and evaluated each patent which Apple filed with USPTO on the antenna technology for iPhone and iPad, and pointed out that the major problem of iPhone antenna is the lack of optimal antenna optimization and calibration technology which result in the poor performance of its radio transmission between the iPhone and the basestation. Prof. Lu has writen a 500-pages report to address this technical issue based on the iPhone antenna patents Apple filed with USPTO. For more, please contact Prof. Lu at wwlu@ieee.org or visit http://4Gsummit.com to join our technical discussions.
Dans nos applications de radio amateurs, il est parfois difficile, voire impossible, de prévoir le fonctionnement d’un aérien dans un environnement particulier. Pour éviter de passer du temps à sa mise au point ou d’avoir à utiliser des appareils de mesure chers etsophistiqués il peut être utile de tenter d’observer les propriétés d’une antenne à l’aide d’un logiciel de simulation.
Vu sur : http://www.passion-radio.org/blog/conception-antennes-radioamateur-assistee-par-ordinateur/173
An antenna is the most important device in a cell-phone in terms of wireless communication. If the antenna doesn't work very well, the signal strength drops drastically. For the design of cell-phone antennas, we can adopt a dipole, helical, PIFA (Planar Inverted F Antenna), or intennas.
This presentation gives an insight about various antennas that were in use in cell phones and are being used in today's smartphones. Images of various phone models showing antenna used are included to give pictorial view of internal antennas
HFSS MICROSTRIP PATCH ANTENNA- ANALYSIS AND DESIGNShivashu Awasthi
ANALYSIS AND DESIGN OF MICROSTRIP SQUARE PATCH ANTENNA USING HFSS SIMULATION TOOL.
Its the Final Year Presentation at 75% of its full flow.
Hopefully It should Help..do leave your reviews and suggestions / queries.
Thanks.
If you're searching for Ppt on World of Smartphones, then you can get it right here which is referred by http://dropin2.com! I've made Ppt on World of Smartphones for the people who really wanted to know what Smartphones are changing and doing day by day and what yet is to come. So, check out the best ever Ppt on World of Smartphones. Don't forget to share it with your friends and family.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
CIRCULARLY POLARIZED APERTURE COUPLED MICROSTRIP SHORT BACKFIRE ANTENNA WITH ...IAEME Publication
A circularly polarized microstrip short back fire antenna (CPMSBA) with two ringcorrugated rim using aperture coupling feed method is proposed in this paper. Theantenna is designed to operate in KU-band. The simulation results verify the circular
polarization. The axial ratio bandwidth bwAR is 3.74%, gain is 10.43 dBi andradiation efficiency is 89.7%. The antenna has a compact structure and high electricaland mechanical characteristics.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna
resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different
details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different
details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna
resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different
details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna
resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different
details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
BODY ANTENNA WITH DGS FOR BODY CENTRIC WIRELESS COMMUNICATION SYSTEMjantjournal
This paper presents modified patch antenna for 3 GHz and 5 GHz operating frequencies. Here different approaches are studied by varying slot sizes, defected ground size, notch and also changing feed position. Insertion of slots gives dual frequency operation. Notch provides shifting of lower frequency band towards left hand side. Here combined effect of each techniques adopted gives desired result. Proposed antenna resonates for 3 and 5 GHz frequency. Simulation is done using IE3D software for various parameters. Return loss of final design was -12.17 dB for 3 GHz frequency and VSWR of 1.65. For 5 GHz simulation response was -10.04dB return loss and VSWR of 1.91. Proposed antenna is fabricated giving different details. Paper gives good agreement between measured and simulated results.
A PROXIMITY FEED DUAL BAND CIRCULAR SHAPED ANTENNA WITH SEMICIRCULAR GROUND P...Amitesh Raikwar
In this work, we present a Circular Shaped proximity feed
Microstrip Patch Antenna. The antenna is comprised of circular
shaped radiation patch and this radiating patch is faded
by proximity coupling. The ground plane of the antenna has
Semicircular pattern to improve the coupling level of the
patch. The simulated result shows it provides the return loss
less than -10 dB for two frequencies 1.27 GHz and 1.43 GHz
which could be a useful frequencies for wireless communication
system. The simulation work is carried out on IE3D
software, a product of Zeland Software Company.
Multiband Circular Microstrip Patch Antenna for WLAN Applicationtheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
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