Compact 8x8 butler matrix for ISM band

Mitigation of interference due to multiple signals coexisting in the same frequency band can be achieved through the implementation of a smart antenna system that employs scanning of multiple and simultaneously available beams. These multiple and simultaneously available beams can be generated throu...

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Main Author:	Cheung, Lester Ted Kong
Format:	Thesis
Language:	English
Published:	2005
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/4223/1/LesterCheungTedKongMFKE2005.pdf
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id	my-utm-ep.4223
record_format	uketd_dc
spelling	my-utm-ep.42232018-01-16T07:23:21Z Compact 8x8 butler matrix for ISM band 2005-03 Cheung, Lester Ted Kong TK Electrical engineering. Electronics Nuclear engineering Mitigation of interference due to multiple signals coexisting in the same frequency band can be achieved through the implementation of a smart antenna system that employs scanning of multiple and simultaneously available beams. These multiple and simultaneously available beams can be generated through beamforming networks such as the Butler Matrix, of which its design is the focus of this thesis. By employing passive devices in a butterfly layout configuration, a completely planar microstrip 8x8 Butler Matrix to perform in the ISM Band of 2.4 GHz to 2.5 GHz was designed. Recently, research has been focusing on the miniaturization of passive microwave devices and components. Artificial Transmissions Lines is a relatively new method that achieves miniaturization of a transmission line through periodically loading the line capacitively in order to lower the phase velocity characteristic of a high impedance line to an appropriate value. The higher the impedance of the line in question, the greater the level of miniaturization obtained. 40 percent area savings and 59 percent area savings were achieved in the design of the passive component hybrid and crossover structures, respectively, compared to conventional design methods. Through the implementation of 12 hybrids, 8 fixed phase shifters and 16 crossover structures, the final layout of a compact Butler Matrix can be designed. Simulations were performed using Microwave Office electromagnetic packages. Design calculations were verified using MatchCad. 2005-03 Thesis http://eprints.utm.my/id/eprint/4223/ http://eprints.utm.my/id/eprint/4223/1/LesterCheungTedKongMFKE2005.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Cheung, Lester Ted Kong Compact 8x8 butler matrix for ISM band
description	Mitigation of interference due to multiple signals coexisting in the same frequency band can be achieved through the implementation of a smart antenna system that employs scanning of multiple and simultaneously available beams. These multiple and simultaneously available beams can be generated through beamforming networks such as the Butler Matrix, of which its design is the focus of this thesis. By employing passive devices in a butterfly layout configuration, a completely planar microstrip 8x8 Butler Matrix to perform in the ISM Band of 2.4 GHz to 2.5 GHz was designed. Recently, research has been focusing on the miniaturization of passive microwave devices and components. Artificial Transmissions Lines is a relatively new method that achieves miniaturization of a transmission line through periodically loading the line capacitively in order to lower the phase velocity characteristic of a high impedance line to an appropriate value. The higher the impedance of the line in question, the greater the level of miniaturization obtained. 40 percent area savings and 59 percent area savings were achieved in the design of the passive component hybrid and crossover structures, respectively, compared to conventional design methods. Through the implementation of 12 hybrids, 8 fixed phase shifters and 16 crossover structures, the final layout of a compact Butler Matrix can be designed. Simulations were performed using Microwave Office electromagnetic packages. Design calculations were verified using MatchCad.
format	Thesis
qualification_level	Master's degree
author	Cheung, Lester Ted Kong
author_facet	Cheung, Lester Ted Kong
author_sort	Cheung, Lester Ted Kong
title	Compact 8x8 butler matrix for ISM band
title_short	Compact 8x8 butler matrix for ISM band
title_full	Compact 8x8 butler matrix for ISM band
title_fullStr	Compact 8x8 butler matrix for ISM band
title_full_unstemmed	Compact 8x8 butler matrix for ISM band
title_sort	compact 8x8 butler matrix for ism band
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2005
url	http://eprints.utm.my/id/eprint/4223/1/LesterCheungTedKongMFKE2005.pdf
_version_	1747814506183000064

Compact 8x8 butler matrix for ISM band

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