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.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0606104-145404 |
| Date | 06 June 2004 |
| Creators | Chen, An-chia |
| Contributors | Kin-Lu Wong, Fa-Shian Chang, Jieh-Sen Kuo, Shih-Hunag Yeh, Shyh-Yeong Ke |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0606104-145404 |
| Rights | campus_withheld, Copyright information available at source archive |
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