Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder

Nowadays, satellite communications play an important role in telecommunications. As a result, high gain and broadband antennas are part of the solution to establish a concept of wide frequency usage. Pyramidal horn antenna is most widely used as feed in satellite communication and tracking due to...

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Main Author:	Othman, Ali
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TK1-9971 Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.usm.my/43221/1/Ali%20Bin%20Othman24.pdf
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id	my-usm-ep.43221
record_format	uketd_dc
spelling	my-usm-ep.432212019-04-12T05:26:09Z Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder 2013-11 Othman, Ali TK1-9971 Electrical engineering. Electronics. Nuclear engineering Nowadays, satellite communications play an important role in telecommunications. As a result, high gain and broadband antennas are part of the solution to establish a concept of wide frequency usage. Pyramidal horn antenna is most widely used as feed in satellite communication and tracking due to suitability for high gain and broadband applications. Generally, pyramidal horn antennas are fed by a coaxial feed transition. However, there is a fundamental limitation on the operating bandwidth (BW) of the coaxial feed transition and is often being considered as narrowband device. This thesis describes the development and analysis of the BW enhancement feeding technique for pyramidal horn antenna using a dielectric resonator (DR) feeder. The hybrid dielectric resonator antenna (DRA) found to be in essence contributing the BW of the design feeder. The combinational effect of two radiators produces multiple resonant frequencies and provides wideband 48.15% of measured -10 dB return loss impedance BW centered at 14.23 GHz, while that of the pyramidal horn with conventional coaxial feed transition is 13.27%. The designed feeder provide an average simulated gain of 16.22 dBi with flexibility in the impedance BW and the far-field radiation characteristics appears to be satisfied within the operating BW. The pyramidal horn improved the gain of the hybrid DRA by 12.34 dBi. The effectiveness of proposed design and preliminary results of the design have shown a potential to exploit the designed feeder to be used in a parabolic antenna for tracking of satellites applications at 10 to 18 GHz. In conclusion this work offers a new, efficient and relatively simple alternative feeding technique configuration for pyramidal horn antenna. 2013-11 Thesis http://eprints.usm.my/43221/ http://eprints.usm.my/43221/1/Ali%20Bin%20Othman24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Elektrik & Elektronik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TK1-9971 Electrical engineering Electronics Nuclear engineering
spellingShingle	TK1-9971 Electrical engineering Electronics Nuclear engineering Othman, Ali Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder
description	Nowadays, satellite communications play an important role in telecommunications. As a result, high gain and broadband antennas are part of the solution to establish a concept of wide frequency usage. Pyramidal horn antenna is most widely used as feed in satellite communication and tracking due to suitability for high gain and broadband applications. Generally, pyramidal horn antennas are fed by a coaxial feed transition. However, there is a fundamental limitation on the operating bandwidth (BW) of the coaxial feed transition and is often being considered as narrowband device. This thesis describes the development and analysis of the BW enhancement feeding technique for pyramidal horn antenna using a dielectric resonator (DR) feeder. The hybrid dielectric resonator antenna (DRA) found to be in essence contributing the BW of the design feeder. The combinational effect of two radiators produces multiple resonant frequencies and provides wideband 48.15% of measured -10 dB return loss impedance BW centered at 14.23 GHz, while that of the pyramidal horn with conventional coaxial feed transition is 13.27%. The designed feeder provide an average simulated gain of 16.22 dBi with flexibility in the impedance BW and the far-field radiation characteristics appears to be satisfied within the operating BW. The pyramidal horn improved the gain of the hybrid DRA by 12.34 dBi. The effectiveness of proposed design and preliminary results of the design have shown a potential to exploit the designed feeder to be used in a parabolic antenna for tracking of satellites applications at 10 to 18 GHz. In conclusion this work offers a new, efficient and relatively simple alternative feeding technique configuration for pyramidal horn antenna.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Othman, Ali
author_facet	Othman, Ali
author_sort	Othman, Ali
title	Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder
title_short	Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder
title_full	Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder
title_fullStr	Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder
title_full_unstemmed	Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder
title_sort	bandwidth enhancement of pyramidal horn antenna using dielectric resonator feeder
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Elektrik & Elektronik
publishDate	2013
url	http://eprints.usm.my/43221/1/Ali%20Bin%20Othman24.pdf
_version_	1747821180475146240

Bandwidth Enhancement Of Pyramidal Horn Antenna Using Dielectric Resonator Feeder

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