$Ultra wideband antenna for microwave imaging using modified fractal structure$

Ultra wideband antenna for microwave imaging using modified fractal structure

Since the Federal Communication Commission release of bandwidth of 7.5 GHz (from 3.1 GHz to 10.6 GHz) for ultra wideband application (UWB), UWB is rapidly advancing as a high data rate wireless technology. Moreover, there are more challenges in designing a UWB antenna than a narrow band antenna. A s...

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Main Author:	Qasem Rasheda, Hamid Mohammed
Format:	Thesis
Language:	English English English
Published:	2017
Subjects:	TK7800-8360 Electronics
Online Access:	http://eprints.uthm.edu.my/784/1/24p%20HAMID%20MOHAMMED%20QASEM%20RASHEDA.pdf http://eprints.uthm.edu.my/784/2/HAMID%20MOHAMMED%20QASEM%20RASHEDA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/784/3/HAMID%20MOHAMMED%20QASEM%20RASHEDA%20WATERMARK.pdf
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id	my-uthm-ep.784
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spelling	my-uthm-ep.7842021-08-30T08:00:13Z Ultra wideband antenna for microwave imaging using modified fractal structure 2017-07 Qasem Rasheda, Hamid Mohammed TK7800-8360 Electronics Since the Federal Communication Commission release of bandwidth of 7.5 GHz (from 3.1 GHz to 10.6 GHz) for ultra wideband application (UWB), UWB is rapidly advancing as a high data rate wireless technology. Moreover, there are more challenges in designing a UWB antenna than a narrow band antenna. A suitable UWB antenna should be capable of operating over an ultra wide bandwidth as allocated by the FCC. In addition, satisfactory radiation properties over the whole frequency range are necessary as well. This project presents the design with fractal geometry of an UWB patch antenna. To achieve UWB characteristic, a planer antenna is considered for the design purpose. The configuration of designed antenna consisted of a partial ground and the patch with addition of two stairs in its bottom edge connected with the feed line. The antenna was designed and optimized using CST Microwave Studio 2014. The proposed antenna is optimized to achieve a fractal shape by introducing slots in the patch at various positions with half grounded structure. A compact design has been observed as a result of optimization. Moreover, the results have been analysed to get the desired bandwidth, and for the comparison purpose the antenna design has been fabricated using FR-4 dielectric substrate and measured its scattering parameters using vector network analyzer (VNA). The obtained results from the measurement have the bandwidth ranges from 2.2 GHz to 12GHz. The analysis of simulated and measured results shows a little deviation due to fabrication and coaxial cable losses. 2017-07 Thesis http://eprints.uthm.edu.my/784/ http://eprints.uthm.edu.my/784/1/24p%20HAMID%20MOHAMMED%20QASEM%20RASHEDA.pdf text en public http://eprints.uthm.edu.my/784/2/HAMID%20MOHAMMED%20QASEM%20RASHEDA%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/784/3/HAMID%20MOHAMMED%20QASEM%20RASHEDA%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Elektrik dan Elektronik
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TK7800-8360 Electronics
spellingShingle	TK7800-8360 Electronics Qasem Rasheda, Hamid Mohammed Ultra wideband antenna for microwave imaging using modified fractal structure
description	Since the Federal Communication Commission release of bandwidth of 7.5 GHz (from 3.1 GHz to 10.6 GHz) for ultra wideband application (UWB), UWB is rapidly advancing as a high data rate wireless technology. Moreover, there are more challenges in designing a UWB antenna than a narrow band antenna. A suitable UWB antenna should be capable of operating over an ultra wide bandwidth as allocated by the FCC. In addition, satisfactory radiation properties over the whole frequency range are necessary as well. This project presents the design with fractal geometry of an UWB patch antenna. To achieve UWB characteristic, a planer antenna is considered for the design purpose. The configuration of designed antenna consisted of a partial ground and the patch with addition of two stairs in its bottom edge connected with the feed line. The antenna was designed and optimized using CST Microwave Studio 2014. The proposed antenna is optimized to achieve a fractal shape by introducing slots in the patch at various positions with half grounded structure. A compact design has been observed as a result of optimization. Moreover, the results have been analysed to get the desired bandwidth, and for the comparison purpose the antenna design has been fabricated using FR-4 dielectric substrate and measured its scattering parameters using vector network analyzer (VNA). The obtained results from the measurement have the bandwidth ranges from 2.2 GHz to 12GHz. The analysis of simulated and measured results shows a little deviation due to fabrication and coaxial cable losses.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Qasem Rasheda, Hamid Mohammed
author_facet	Qasem Rasheda, Hamid Mohammed
author_sort	Qasem Rasheda, Hamid Mohammed
title	Ultra wideband antenna for microwave imaging using modified fractal structure
title_short	Ultra wideband antenna for microwave imaging using modified fractal structure
title_full	Ultra wideband antenna for microwave imaging using modified fractal structure
title_fullStr	Ultra wideband antenna for microwave imaging using modified fractal structure
title_full_unstemmed	Ultra wideband antenna for microwave imaging using modified fractal structure
title_sort	ultra wideband antenna for microwave imaging using modified fractal structure
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Elektrik dan Elektronik
publishDate	2017
url	http://eprints.uthm.edu.my/784/1/24p%20HAMID%20MOHAMMED%20QASEM%20RASHEDA.pdf http://eprints.uthm.edu.my/784/2/HAMID%20MOHAMMED%20QASEM%20RASHEDA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/784/3/HAMID%20MOHAMMED%20QASEM%20RASHEDA%20WATERMARK.pdf
_version_	1747830680465702912

Ultra wideband antenna for microwave imaging using modified fractal structure

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