In this dissertation, EMC antennas for mobile communication device applications are proposed. This kind of EMC antennas can overcome the problem that happens to the conventional antenna; in practical application, when electronic components are placed very close to the conventional antenna, large degradation of the antenna performance will occur. In the proposed EMC antennas, by adding a vertical antenna ground plane functioning as a shielding metal wall, EM coupling between the EMC antenna and nearby components can be reduced. Thus, it leads to no degradation or only negligible variations of the antenna performance. Also, the concept of EMC antennas can be applied to the monopole antenna. One of the examples suitable for the future thin (< 10 mm) mobile communication device is demonstrated. Further, the user¡¦s hand effects on EMC antenna performance are analyzed. Even when the mobile phone is hand-held at the bottom, large radiation efficiency drops are observed, especially for the GSM band.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0524106-163442 |
| Date | 24 May 2006 |
| Creators | Su, Chih-ming |
| Contributors | Kin-Lu Wong, Shun-yun Lin, Tsung-wen Chiu, Chien-yi Wu, Hong-twu Chen, Hsin-cheng Su, Shyh-tirng Fang, Wen-shyang Chen, Yuan-tung Cheng |
| 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-0524106-163442 |
| Rights | not_available, Copyright information available at source archive |
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