Null positioning of dipole antenna array considering coupling effect

Antenna array is a set of antennas that are arranged together with different excitations (amplitude and phase) and used in beamforming techniques. The difference in phases are combined together to make the array acting like a single antenna with better steering capability over a single antenna. Howe...

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Main Authors:	Abdul Malek, Norun, Mat Ramli, Nurwahida, Abdullah, Khaizuran
Format:	Article
Language:	English English
Published:	Praise Worthy Prize 2017
Subjects:	T Technology (General)
Online Access:	http://irep.iium.edu.my/61653/ http://irep.iium.edu.my/61653/ http://irep.iium.edu.my/61653/ http://irep.iium.edu.my/61653/1/11718-28041-1-PB.pdf http://irep.iium.edu.my/61653/7/61653_Null%20positioning%20of%20dipole%20antenna%20array%20considering_SCOPUS.pdf

id	iium-61653
recordtype	eprints
spelling	iium-616532018-03-07T10:38:06Z http://irep.iium.edu.my/61653/ Null positioning of dipole antenna array considering coupling effect Abdul Malek, Norun Mat Ramli, Nurwahida Abdullah, Khaizuran T Technology (General) Antenna array is a set of antennas that are arranged together with different excitations (amplitude and phase) and used in beamforming techniques. The difference in phases are combined together to make the array acting like a single antenna with better steering capability over a single antenna. However, the receiving antenna arrays are influenced by intentional or unintentional interference. In this research, a null positioning technique has been introduced to the antenna array to efficiently mitigate the interference. An efficient method utilizing Genetic Algorithm (GA) is used to position the nulls in the direction of interference of circular array dipole antennas. In forming the null, GA randomly searches the best fitness function to position the null to any direction. Then, the effect of mutual coupling between the antenna elements is also considered in this research. As a result, the accuracy of radiation pattern of antenna array will be increased. It is observed that the mutual coupling decreases when the spacing between element increases. The simulation results show that nulls can be steered successfully using GA with and without mutual coupling effect. The mutual coupling effect has been taken into account and need to be considered especially in a closely spaced antenna arrays. Praise Worthy Prize 2017-10 Article PeerReviewed application/pdf en http://irep.iium.edu.my/61653/1/11718-28041-1-PB.pdf application/pdf en http://irep.iium.edu.my/61653/7/61653_Null%20positioning%20of%20dipole%20antenna%20array%20considering_SCOPUS.pdf Abdul Malek, Norun and Mat Ramli, Nurwahida and Abdullah, Khaizuran (2017) Null positioning of dipole antenna array considering coupling effect. International Journal on Communications Antenna and Propagation, 7 (5). pp. 370-377. ISSN 2039-5086 E-ISSN 2533-2929 www.praiseworthyprize.org/jsm/index.php?journal=irecap&page=article&op=view&path%5B%5D=20369 10.15866/irecap.v7i5.11718
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	T Technology (General)
spellingShingle	T Technology (General) Abdul Malek, Norun Mat Ramli, Nurwahida Abdullah, Khaizuran Null positioning of dipole antenna array considering coupling effect
description	Antenna array is a set of antennas that are arranged together with different excitations (amplitude and phase) and used in beamforming techniques. The difference in phases are combined together to make the array acting like a single antenna with better steering capability over a single antenna. However, the receiving antenna arrays are influenced by intentional or unintentional interference. In this research, a null positioning technique has been introduced to the antenna array to efficiently mitigate the interference. An efficient method utilizing Genetic Algorithm (GA) is used to position the nulls in the direction of interference of circular array dipole antennas. In forming the null, GA randomly searches the best fitness function to position the null to any direction. Then, the effect of mutual coupling between the antenna elements is also considered in this research. As a result, the accuracy of radiation pattern of antenna array will be increased. It is observed that the mutual coupling decreases when the spacing between element increases. The simulation results show that nulls can be steered successfully using GA with and without mutual coupling effect. The mutual coupling effect has been taken into account and need to be considered especially in a closely spaced antenna arrays.
format	Article
author	Abdul Malek, Norun Mat Ramli, Nurwahida Abdullah, Khaizuran
author_facet	Abdul Malek, Norun Mat Ramli, Nurwahida Abdullah, Khaizuran
author_sort	Abdul Malek, Norun
title	Null positioning of dipole antenna array considering coupling effect
title_short	Null positioning of dipole antenna array considering coupling effect
title_full	Null positioning of dipole antenna array considering coupling effect
title_fullStr	Null positioning of dipole antenna array considering coupling effect
title_full_unstemmed	Null positioning of dipole antenna array considering coupling effect
title_sort	null positioning of dipole antenna array considering coupling effect
publisher	Praise Worthy Prize
publishDate	2017
url	http://irep.iium.edu.my/61653/ http://irep.iium.edu.my/61653/ http://irep.iium.edu.my/61653/ http://irep.iium.edu.my/61653/1/11718-28041-1-PB.pdf http://irep.iium.edu.my/61653/7/61653_Null%20positioning%20of%20dipole%20antenna%20array%20considering_SCOPUS.pdf
first_indexed	2023-09-18T21:27:25Z
last_indexed	2023-09-18T21:27:25Z
_version_	1777412284503556096

Null positioning of dipole antenna array considering coupling effect

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