臺灣博碩士論文加值系統

被動式RFID之射頻輸入端通常為一多級式整流電路。在這篇論文中，我們使用Hspice軟體對此類電路進行時域分析，以探討被動式RFID前級輸入端在大輸入信號環境下，其輸入電壓與電流之特性，並探討此特性與前端整流電路設計中各元件參數間之關係。本文主要研究整流電路設計中各參數對最低感應輸入電壓所產生的要求。依照我們模擬之結果，我們建議出一個最為優化的被動式RFID前級電路設計方式。

The RF input port for the passive RFID tag is usually a multi-stage regulator. In this paper, we perform a HSPICE time domain analysis to this kind of circuits. For large input signal, the relation between voltage and current at the front end of the passive RFID is studied by this method. The relation between circuit design parameters and the circuit input impedence is established. According our study, we propose an optimized design parameters for the front stage of the passive RFID circuit.

第一章 緒論 .........................................................................................1
1-1 前言 ............................................................................................1
1-2 研究目的 ..................................................................................1
1-3 論文組織架構 ...........................................................................3
第二章 無線射頻辨識系統簡介 ......................................................5
2-1 RFID系統的發展歷史 .............................................................5
2-2 RFID應用頻段及相關技術等級..............................................6
2-2.1 依使用頻帶區域區分......................................................6
2-2.2 依組織標準區分............................................................10
2-3 RFID標籤種類........................................................................13
2-3.1 主動式標籤(Active Tag) ...............................................13
2-3.2 被動式標籤(Passive Tag) .............................................14
2-3.3 半主動式標籤(Semi-Active Tag) .................................14
2-4 RFID系統組成........................................................................15
2-4.1 RFID電子標籤(Tag)系統組成......................................16
2-4.2 讀取器............................................................................17
2-4.3 RFID 後端應用系統.....................................................18
2-5 RFID系統的應用與優缺點...................................................18
第三章 無線射頻辨識系統動作原理................................................23
3-1 RFID 系統的工作原理...........................................................23
3.2 射頻辨識系統的傳遞方式......................................................24
3-2.1 感應耦合(Inductive Coupling) .....................................24
3-2.2 後向散射式感應耦(Backscatter Coupling) ..................25
3-3 整流架構介紹..........................................................................27
3-4 AC/DC電荷泵電路(charge pump) .........................................28
3-5 整流電路..................................................................................29
第四章 無線射頻識別標籤整流電路之時域模擬與分析..................32
4-1 模擬使用軟體..........................................................................32
4-2 模擬結果..................................................................................39
4-2.1 電壓電流模擬................................................................41
4-2.2 輸入電阻值....................................................................53
4-2.3 電路電容參數模擬........................................................54
4-3 轉換比例..................................................................................56
第五章 結果與結論..............................................................................62
第六章 改善發展................................................................................65
參考文獻..................................................................................................66
附 錄A.....................................................................................................69
附 錄B.....................................................................................................83

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