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A Thin Flat Antenna Design for Third Generation Mobile Communication Systems

By employing a low-cost loop antenna of simple structure, a novel antenna design to efficiently make use of the system ground plane of a PDA (personal digital assistant) is proposed. Owing to a small distance of 3 mm between the antenna and the ground plane, the propose antenna has a very low profile. By selecting a proper loop¡¦s length-to-width ratio, two resonant modes close to each other can be excited, which lead to an impedance bandwidth of 17%. In addition, because of the same direction of the surface currents on the radiating metal plate, the antenna peak gain reaches about 4.5 dBi, which is attractive for application in PDAs.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0606104-145404
Date06 June 2004
CreatorsChen, An-chia
ContributorsKin-Lu Wong, Fa-Shian Chang, Jieh-Sen Kuo, Shih-Hunag Yeh, Shyh-Yeong Ke
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-0606104-145404
Rightscampus_withheld, Copyright information available at source archive

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