Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface

The performance of the reflector antenna may seriously degrades in terms of the gain reduction and beam shift when a dust/sand is accreted on its surface. This paper investigates the effects on the radiation pattern of a practical parabolic reflector antenna due to the dust accretion on its surface....

Full description

Bibliographic Details
Main Authors:	Hamed, Sameir M. Ali, Musa, Abdulwaheed, Bashir, Saad Osman
Format:	Conference or Workshop Item
Language:	English English
Published:	IEEE 2015
Subjects:	TA168 Systems engineering
Online Access:	http://irep.iium.edu.my/51903/ http://irep.iium.edu.my/51903/ http://irep.iium.edu.my/51903/ http://irep.iium.edu.my/51903/1/51903_Effects%20on%20the%20radiation%20pattern%20of%20a%20reflector%20antenna.pdf http://irep.iium.edu.my/51903/2/51903_Effects%20on%20the%20radiation%20pattern%20of%20a%20reflector%20antenna_SCOPUS.pdf

id	iium-51903
recordtype	eprints
spelling	iium-519032016-12-27T02:52:26Z http://irep.iium.edu.my/51903/ Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface Hamed, Sameir M. Ali Musa, Abdulwaheed Bashir, Saad Osman TA168 Systems engineering The performance of the reflector antenna may seriously degrades in terms of the gain reduction and beam shift when a dust/sand is accreted on its surface. This paper investigates the effects on the radiation pattern of a practical parabolic reflector antenna due to the dust accretion on its surface. A modified far-fields expressions for a parabolic reflector that is fed by a rectangular waveguide and partially covered with a uniform layer of dust are formulated. These modified field expressions are used to study the radiation pattern of a reflector antenna of 1 m in diameter which is fed by a rectangular waveguide of sides 0.95λ×0.70λ operating at X-band, assuming an acretion of a uniform layer of dust on the reflector. It is found that the reduction of the maximum signal level at a given frequency changes almost periodically with a period nearly equal to π as t increases, and the thick layers of dust does not necessarily result in more reduction in the signal level or beam phase shift compared to the thin layers. For t=6 mm, the worst signal reduction and phase shift in the main beam occur when the surface of the reflector is half-covered with dust, while the full-covered reflector results in a minimum signal reduction without any phase shift in the main beam. IEEE 2015 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/51903/1/51903_Effects%20on%20the%20radiation%20pattern%20of%20a%20reflector%20antenna.pdf application/pdf en http://irep.iium.edu.my/51903/2/51903_Effects%20on%20the%20radiation%20pattern%20of%20a%20reflector%20antenna_SCOPUS.pdf Hamed, Sameir M. Ali and Musa, Abdulwaheed and Bashir, Saad Osman (2015) Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface. In: 2015 International Conference on Computing, Control, Networking, Electronics and Embedded Systems Engineering (ICCCNEE 2015), 7th-9th Dec. 2015, Khartoum, Sudan. http://ieeexplore.ieee.org/document/7381436/ 10.1109/ICCNEEE.2015.7381436
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TA168 Systems engineering
spellingShingle	TA168 Systems engineering Hamed, Sameir M. Ali Musa, Abdulwaheed Bashir, Saad Osman Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
description	The performance of the reflector antenna may seriously degrades in terms of the gain reduction and beam shift when a dust/sand is accreted on its surface. This paper investigates the effects on the radiation pattern of a practical parabolic reflector antenna due to the dust accretion on its surface. A modified far-fields expressions for a parabolic reflector that is fed by a rectangular waveguide and partially covered with a uniform layer of dust are formulated. These modified field expressions are used to study the radiation pattern of a reflector antenna of 1 m in diameter which is fed by a rectangular waveguide of sides 0.95λ×0.70λ operating at X-band, assuming an acretion of a uniform layer of dust on the reflector. It is found that the reduction of the maximum signal level at a given frequency changes almost periodically with a period nearly equal to π as t increases, and the thick layers of dust does not necessarily result in more reduction in the signal level or beam phase shift compared to the thin layers. For t=6 mm, the worst signal reduction and phase shift in the main beam occur when the surface of the reflector is half-covered with dust, while the full-covered reflector results in a minimum signal reduction without any phase shift in the main beam.
format	Conference or Workshop Item
author	Hamed, Sameir M. Ali Musa, Abdulwaheed Bashir, Saad Osman
author_facet	Hamed, Sameir M. Ali Musa, Abdulwaheed Bashir, Saad Osman
author_sort	Hamed, Sameir M. Ali
title	Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
title_short	Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
title_full	Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
title_fullStr	Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
title_full_unstemmed	Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
title_sort	effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface
publisher	IEEE
publishDate	2015
url	http://irep.iium.edu.my/51903/ http://irep.iium.edu.my/51903/ http://irep.iium.edu.my/51903/ http://irep.iium.edu.my/51903/1/51903_Effects%20on%20the%20radiation%20pattern%20of%20a%20reflector%20antenna.pdf http://irep.iium.edu.my/51903/2/51903_Effects%20on%20the%20radiation%20pattern%20of%20a%20reflector%20antenna_SCOPUS.pdf
first_indexed	2023-09-18T21:13:35Z
last_indexed	2023-09-18T21:13:35Z
_version_	1777411414167650304

Effects on the radiation pattern of a reflector antenna due to a dust accretion on its surface

Similar Items