臺灣博碩士論文加值系統

本論文主要針對超高頻頻段射頻標籤天線進行設計，並提出三種應用於不同環境之射頻辨識標籤天線。三種標籤天線均採用目前市售晶片Alien Higgs-4晶片，然而不同的晶片其阻抗、啟動功率及靈敏度特性亦不相同，對於標籤天線的設計也會造成影響。本論文提出三種天線設計機制，三款天線均能使用於金屬介質以及水溶液上。其中第一款天線利用短路下地機制與接地面產生立體結構，其貼附在金屬與水容器環境最大讀取距離分別可達5.1公尺、3.3公尺；第二款天線在設計上利用IFA結構進行設計並利用輻射面之開槽孔調整匹配，使其能貼附於金屬與水容器上，當貼附在金屬與水容器時最大讀取距離分別為8.1公尺、5公尺；最後一款天線在設計上利用Loop結構進行設計，並且利用下地面之長度調整匹配使其能貼附於金屬與水容器上，當貼附在金屬與水容器時最大讀取距離分別為9公尺、4.5公尺。

The study mainly concentrates on the design of UHF band RFID tag antenna. All three type antennas use Alien Higgs-4 chip for the design However, different chips have different impedance, turn-on power and sensitivity for practical design of tag antennas. Therefore, Three kinds antennas are suitable for mounted on metal planes and water containers have been presented. The first antenna uses shorting mechanism to generate a three-dimensional dipole structure. Attached to the metal plane the maximum reading distance is up to 5.1 meters and water container is 3.3 meters. The second antenna uses IFA structure and a tunable stub which can adjust frequencies for different areas. The maximum reading distance of metal plane and water container were 8.1 and 5 meter, respectively. The last antenna is design with loop structure, that uses shorting mechanism to generate a matching loop with the ground plane, which can be attached to the metal plane and water container by adjusting the length when attached to the metal plane and water container. The maximum reading distance is 9 meters and 4.5 meters respectively.

摘要 i
ABSTRACT ii
致 謝 iii
目 錄 iv
表 目 錄 v
圖 目 錄 vi
第一章 序論 1
1.1 研究背景 1
1.2 射頻辨識系統簡介 1
1.3 研究目的 4
1.4 文獻導覽 5
1.5 射頻辨識標籤量測架構概要 6
1.6 研究內容提要 10
第二章 具短路機制之雙層立體偶極標籤天線 11
2.1 前言 11
2.2 天線設計與實驗結果 11
2.3 結構分析與參數探討 24
2.4 結論 29
第三章 具開槽可調頻結構之IFA標籤天線 30
3.1 前言 30
3.2 天線設計與實驗結果 30
3.3 結構分析與參數探討 41
3.4 結論 47
第四章 具調頻機制之雙層式環形標籤天線 48
4.1 前言 48
4.2 天線設計與實驗結果 48
4.3 結構分析與參數探討 61
4.4 結論 68
第五章 結論與未來發展 69
參考文獻 71

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