本論文探討射頻辨識系統之標籤天線，其中乃應用HFSS、IE3D和XFDTD三套電磁數值模擬套裝軟體進行分析與設計，並於本校天線遠場全無反射實驗室量測與驗證標籤天線之特性。此外，著眼於射頻辨識標籤天線使用上必須相當接近所標示物體，而受標示物之多樣性對天線有不同程度的影響，因此，本研究亦針對不同應用之標籤天線設計進行相關探討與分析，並實測驗證之。在標籤天線設計方面，本論文提出兩款天線設計架構：一為單極天線型式，此種架構可有效減少天線設計空間；其二是槽型天線架構，適用於金屬表面標示之應用。本研究結合電波傳播與天線理論及實務，建立射頻辨識系統效能評估與相關之天線設計技術，可提供射頻辨識應用與相關設計之參考。

This thesis investigates the tag antenna of the radio frequency identification (RFID) system. Three different electrogmagnetic numerical softwares, HFSS, IE3D and XFDTD, have been applied to analyze and design the antennas. Also, measurements are performed in NTUST Antenna Far-field Anechoic Chamber to verify those simulations. Besides, since the tag antennas are usually very close to the objects to be tagged so that the performance of the antenna may be significantly affected by the objects, different antenna designs for particular applications are studied and verified by testing. For the tag antenna designs, two design structures are presented: one is a monopole antenna style which may reduce the antenna size; the other is a slot antenna style which may be applied to tag metal objects. This study considers both wave propagation and antenna in theory and practice to establish the analysis and design procedures of the RFID system, which may be employed in the RFID applications and designs.

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