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ULTRA-WIDEBAND PLANAR ANTENNA DESIGNS AND APPLICATIONS

The studies in this dissertation mainly utilize planar antennas for ultra-wideband antenna designs not only on the investigation of antenna performance but also towards exploiting attractive features of ultra-wideband antennas for practical applications, such as WMAN access-point antennas, omnidirectional WiMAX access-point antennas, band-notched UWB (Ultra-wideband, 3.1 ~ 10.6 GHz) antennas, and so on. To begin with, the effects of the ground-plane size and the asymmetrical ground plane on ultra-wideband antennas are studied in Chapter 2. Following up, from the conclusive results, an antenna for WMAN operation in access-point applications and an omnidirectional monopole for USB wireless network card device are proposed and analyzed. Characteristics of ultra-wideband antenna radiation in relation to the antenna's width for obtaining omnidirectional radiation are addressed. In Chapter 3, several ultra-wideband access-point antennas are presented for achieving good omnidirectional radiation in the azimuthal plane across the bandwidth. Furthermore, in Chapter 4, band-notching techniques are applied to ultra-wideband antennas for avoiding the interference between the UWB and the WLAN systems.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0522106-110633
Date22 May 2006
CreatorsSu, Saou-Wen
ContributorsWen-Shyang Chen, Yuan-Tung Chen, Hong-Twu Chen, Hua-Ming Chen, Shyh-Ting Fang, Jen-Yea Jan, Chien-Yi Wu, Tsung-Wen Chiu, Kin-Lu Wong
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0522106-110633
Rightsnot_available, Copyright information available at source archive

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