本論文為討論在多模PDA手機中，其天線系統之最佳隔離度問題。首先分析在具有數位通訊系統與全球衛星定位系統之雙模PDA手機中，其天線之最佳隔離度位置，然後改變其數位通訊系統之天線類型來驗證其最佳隔離度位置是否改變。接著分析在具有數位通訊系統與無線區域網路系統之雙模PDA手機中，其天線之最佳隔離度位置。最後提出一包含數位通訊系統、全球衛星定位系統與無線區域網路系統且具有良好隔離度之三模PDA手機天線系統設計。

Studies of the optimum isolation in a multi-mode PDA phone are presented in this thesis. Firstly, we analyze the optimum isolation between the DCS and GPS antennas embedded in a dual-mode PDA phone. Then, we change the antenna types of the DCS system to study again the behavior of the optimum isolation. Secondly, we analyze the optimum isolation between a DCS antenna and a WLAN antenna embedded in a dual-mode PDA phone. Finally, we propose a multi-mode PDA phone for DCS, GPS, and WLAN operations with good isolation among the three internal antennas.

第一章 序論 (Introduction) ............................. 1
1.1 概述 ................................................ 1
1.2 文獻導覽 ............................................ 1
1.3 論文內容 ............................................ 2
第二章 GPS天線與DCS天線之最佳隔離度分析
(Analysis of optimum isolation between a GPS antenna and a DCS antenna) ............................................ 3
2.1 設計緣由 ............................................ 3
2.2 天線設計 ............................................ 3
2.3 參數分析 ............................................ 7
2.4 模擬分析與實驗結果 ................................. 10
2.5 GPS天線之右旋極化波分析 ............................ 14
2.6 心得討論 ........................................... 19
第三章 不同DCS天線類型對最佳隔離度影響之分析
(Analysis of the effect of different DCS antennas on optimum isolation) ..................................... 20
3.1 設計緣由 ........................................... 20
3.2 天線設計 ........................................... 20
3.3 模擬分析與實驗結果 ................................. 23
3.4 心得討論 ........................................... 29
第四章 WLAN天線與DCS天線之最佳隔離度分析
(Analysis of optimum isolation between a WLAN antenna and a DCS antenna) ......................................... 30
4.1 設計緣由 ........................................... 30
4.2 天線設計 ........................................... 30
4.3 模擬分析與實驗結果 ................................. 33
4.4 心得討論 ........................................... 38
第五章 多模PDA手機天線系統之最佳隔離度設計
(Optimum isolation design for the antenna systems in a multi-mode PDA phone) .................................. 39
5.1 設計緣由 ........................................... 39
5.2 天線設計 ........................................... 39
5.3 模擬與實驗結果 ..................................... 41
5.4 心得討論 ........................................... 44
第六章 結論 (Conclusion) .............................. 45
參考文獻 (References) .................................. 46
論文著作表 (Publication List) .......................... 48

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