本論文提出一種可充分利用個人數位助理系統接地面的天線設計，利用簡單且低成本的迴圈天線製作來完成天線設計。由於天線輻射體距離接地面只有3 mm，使得本設計具有低姿勢的優點。而將迴圈長寬比改變後可產生兩個相鄰共振模態，適當設計迴圈寬度可具有17%寬頻的效果。並且因為輻射金屬片上表面電流方向一致，而有4.5 dBi的天線增益。

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.

第一章　序論 (Introduction)
1.1 概述
1.2 文獻導覽
1.3 論文內容

第二章 雙迴圈天線參數設計 (Parametric Study of a Dual-Loop Antenna)
2.1 設計緣由
2.2 天線設計
2.3 設計參數分析

第三章 天線實作及量測 (Antenna Construction and Measurement)
3.1 實際製作
3.2 實作心得

第四章 結論 (Conclusions)
參考文獻 (References)
論文著作表 (Publication List)

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[10]http://www.dgt.gov.tw/chinese/Public-cares/12.2/12-2-wave-3655.shtml, 交通部電信總局.