臺灣博碩士論文加值系統

本論文中提出了一個使用到三個多輸出第二代電流傳輸器(MO-CCIIs)，兩個接地電容以及三個電阻所組成的正交振盪器。所提出的電路同時擁有高輸出阻抗的正交電流式訊號與電壓式訊號，此振盪器的振盪條件與振盪頻率可藉由接地電阻獨立可調。
以上提出的電路僅接使用接地電容，從積體電路製造的觀點，可以消去寄生電容效應，對於製程有很大的效益;另外所使用的電阻都與CCII的x端連接，可消去CCII的寄生電阻效應。

A new quadrature oscillator circuit using three multiple output second-generation current conveyors (MO-CCIIs), two grounded capacitors,and three resistors is presented. Two high output impedance current-mode signals and two voltage-mode signals with 90o phase difference between each pair of signals are available in the proposed circuit. The oscillation condition and oscillation frequency are independently controllable through grounded resistors. The use of only grounded capacitors makes the proposed circuit ideal for integrated circuit implementation. Experimental results are included.

目 錄
摘要 I
Abstract II
誌謝 III
目錄 IV
第一章 緒論 1
1-1 研究動機 1
1-2 論文編排 3
第二章 電流式主動元件之簡介 4
2-1 Nullor模型 4
2-2 電流傳輸器(Current Conveyor:CC) 9
2-2.1 第一代電流傳輸器(CCI) 10
2-2.2 第二代電流傳輸器(CCII) 12
2-2.3 電流回授放大器(CFA) 18
2-2.4 完全差動第二代電流傳輸器(FDCCII) 21
第三章 以第二代電流傳輸器(CCII)設計之振盪器 23
3-1 簡介 23
3-2 振盪器基本理論 24
3-3 敏感度(Sensitivity) 25
3-4 以多輸出第二代電流傳輸器(MO-CCII)設計之振盪器 26
3-4.1本文電路分析 26
3-4.2非理想因子的影響 30
3-5實驗數據 33
3-6 結論 37
第四章 結論與展望 38
參考資料 39

圖表目錄
圖2-1.1 CCI之元件符號 4
圖2-1.2 Nullator 模型 5
圖2-1.3 Norator 模型 6
圖2-1.4 正型之Norator 6
圖2-1.5 負型之Norator 6
圖2-2.1 電流傳輸器之元件符號 9
圖2-2.2 CCI之元件符號 11
圖2-2.3 CCI之內部電路 11
圖2-2.4 Nullor 等效模型 12
圖2-2.5 CCII之元件符號 13
圖2-2.6 用BJT元件設計之CCII+電路圖 13
圖2-2.7 用BJT元件設計之CCII-電路圖 14
圖2-2.8 用CMOS元件設計之CCII+電路圖 14
圖2-2.9 用CMOS元件設計之CCII-電路圖 15
圖2-2.10 CCII之Nullor等效模型 15
圖2-2.11 CCII之簡單應用 16
圖2-2.12 MO-CCII之電路符號 17
圖2-2.13 CFA之元件符號 18
圖2-2.14 CFA之Nullor等效模型 18
圖2-2.15 CCII+串接電壓隨耦器等效成CFA 19
圖2-2.16 AD844內部電路 20
圖2-2.17 AD844的內部等效模型 20
圖2-2.18 以CCII+表示的AD844內部等效電路圖 21
圖2-2.19 FDCCII的元件符號 22
圖2-2.20 CMOS元件合成的FDCCII之電路 22
圖3-2.1 回授系統 24
圖3-4.1 本文提出以CCII合成之正交振盪器 27
圖3-4.2 電壓積分器 27
圖3-4.3 電流積分器 28
圖3-4.4 考慮寄生元件之實際MO-CCII 31
圖3-5.1 IC-AD844合成之MO-CCII 33
圖3-5.2 電壓式訊號正交情況 34
圖3-5.3 電流式訊號正交情況 34
圖3-5.4 調整R3所對應之震盪頻率 35
圖3-5.5 正交電壓訊號 36
圖3-5.6 正交電壓訊號之頻譜分析 36
圖3-5.7 正交電流訊號 36
圖3-5.8 正交電流訊號之頻譜分析 37

參 考 資 料
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