Design and characterization of flat lens antenna using aperture-coupled microstrip patches

A planar discrete lens antenna is a low profile, light weight and cost effective solution to conventional and curved dielectric lenses. The basic theory of operation of flat lens antenna unit cell is to collimate the feed spherical electromagnetic incident wave into planar wavefront at the back o...

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Main Author:	Ali Awaleh, Abdisamad
Format:	Thesis
Language:	English English English
Published:	2015
Subjects:	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
Online Access:	http://eprints.uthm.edu.my/1249/2/ABDISAMAD%20ALI%20AWALEH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1249/1/24p%20ABDISAMAD%20ALI%20AWALEH.pdf http://eprints.uthm.edu.my/1249/3/ABDISAMAD%20ALI%20AWALEH%20WATERMARK.pdf
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spelling	my-uthm-ep.12492021-08-11T04:19:27Z Design and characterization of flat lens antenna using aperture-coupled microstrip patches 2015-12 Ali Awaleh, Abdisamad TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television A planar discrete lens antenna is a low profile, light weight and cost effective solution to conventional and curved dielectric lenses. The basic theory of operation of flat lens antenna unit cell is to collimate the feed spherical electromagnetic incident wave into planar wavefront at the back of the aperture. Therefore, the array unit cell must be designed to establish the required phase adjustment. Flat lens antenna elements which are based on aperture-coupled microstrip patches are presented. The lens contains 7×7 elements with a diameter of 71 mm and operates in the X-band frequency range. The lens was experimentally validated and good agreement between simulation and measurement results were obtained. The achieved measured peak gain is 15.85 dB. This gives 6 dB gain enhancement for the system. The antenna 1-dB gain bandwidth and power efficiency are 7.8% and 58% respectively. A very good transmission phase shift of 340° is achieved with transmission coefficient of better than 2.25 dB. In addition, the measured radiation pattern results show that the antenna system has good symmetry between E and H plane with a half-power beamwidth of 16.2° and 16.6° in E-plane and H-plane respectively. Moreover, the proposed lens element employs a simple and less fabrication complexity mechanism for phase shift correction. Finally, the obtained results show that the proposed flat lens antenna is an attractive choice for the applications of wireless airborne systems such as VSAT (Very Small Aperture Terminal). 2015-12 Thesis http://eprints.uthm.edu.my/1249/ http://eprints.uthm.edu.my/1249/2/ABDISAMAD%20ALI%20AWALEH%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/1249/1/24p%20ABDISAMAD%20ALI%20AWALEH.pdf text en public http://eprints.uthm.edu.my/1249/3/ABDISAMAD%20ALI%20AWALEH%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Faculty of Electrical and Electronic Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
spellingShingle	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television Ali Awaleh, Abdisamad Design and characterization of flat lens antenna using aperture-coupled microstrip patches
description	A planar discrete lens antenna is a low profile, light weight and cost effective solution to conventional and curved dielectric lenses. The basic theory of operation of flat lens antenna unit cell is to collimate the feed spherical electromagnetic incident wave into planar wavefront at the back of the aperture. Therefore, the array unit cell must be designed to establish the required phase adjustment. Flat lens antenna elements which are based on aperture-coupled microstrip patches are presented. The lens contains 7×7 elements with a diameter of 71 mm and operates in the X-band frequency range. The lens was experimentally validated and good agreement between simulation and measurement results were obtained. The achieved measured peak gain is 15.85 dB. This gives 6 dB gain enhancement for the system. The antenna 1-dB gain bandwidth and power efficiency are 7.8% and 58% respectively. A very good transmission phase shift of 340° is achieved with transmission coefficient of better than 2.25 dB. In addition, the measured radiation pattern results show that the antenna system has good symmetry between E and H plane with a half-power beamwidth of 16.2° and 16.6° in E-plane and H-plane respectively. Moreover, the proposed lens element employs a simple and less fabrication complexity mechanism for phase shift correction. Finally, the obtained results show that the proposed flat lens antenna is an attractive choice for the applications of wireless airborne systems such as VSAT (Very Small Aperture Terminal).
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Ali Awaleh, Abdisamad
author_facet	Ali Awaleh, Abdisamad
author_sort	Ali Awaleh, Abdisamad
title	Design and characterization of flat lens antenna using aperture-coupled microstrip patches
title_short	Design and characterization of flat lens antenna using aperture-coupled microstrip patches
title_full	Design and characterization of flat lens antenna using aperture-coupled microstrip patches
title_fullStr	Design and characterization of flat lens antenna using aperture-coupled microstrip patches
title_full_unstemmed	Design and characterization of flat lens antenna using aperture-coupled microstrip patches
title_sort	design and characterization of flat lens antenna using aperture-coupled microstrip patches
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Faculty of Electrical and Electronic Engineering
publishDate	2015
url	http://eprints.uthm.edu.my/1249/2/ABDISAMAD%20ALI%20AWALEH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1249/1/24p%20ABDISAMAD%20ALI%20AWALEH.pdf http://eprints.uthm.edu.my/1249/3/ABDISAMAD%20ALI%20AWALEH%20WATERMARK.pdf
_version_	1747830756955127808

Design and characterization of flat lens antenna using aperture-coupled microstrip patches

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