以電流差動轉導放大器設計三階
電子可調式正交震盪器

在本文中提出了一個以電流差動轉導放大器（CDTAs）為基礎所設計的電流/電壓模式三階正交震盪器。可在此正交震盪器電路中，得到兩個電流式的輸出正弦波和兩個電壓式的輸出正弦波，並且存在著90度的相位差。此震盪器的震盪條件和震盪頻率是可以獨立控制的，另外這個被提出的電路只有使用到接地電容器，是非常適合於積體電路製程的。其理論分析可以用模擬結果來得到證實。

關鍵字

電流式；電壓式；正交震盪器；電流差動轉導放大器；有源電路

並列摘要

A current/voltage-mode third-order quadrature oscillator based on current differencing transconductance amplifiers (CDTAs) is presented in this thesis. Outputs of two current-mode and two voltage-mode sinusoids each with 90o phase difference are available in the quadrature oscillator circuit. The oscillation condition and oscillation frequency are independently controllable. The proposed circuit employs only grounded capacitors and is ideal for integration. Simulation results are included to confirm the theoretical analysis.

並列關鍵字

active circuit ； voltage-mode ； Current differencing transconductance amplifiers ； quadrature oscillator ； current-mode

參考文獻

vol . 17,p.132-134, 1970.

block: current differencing buffered amplifier suitable for analog signal-processing filters Istanbul Technical University, Faculty of Electrical-Electronics Engineering, 80626 Maslak, Istanbul, Turkey

Accepted 18 September 1998

[5]D. BIOLEK, V. BIOLKOVÁ, “Modelling and Optimization of Active

Filters by Hybrid "VIVMMC"-graphs”, Systems and Control: Theory and Applications, World Scientific, Electrical and Computer Engineering Series, 2000, pp. 381-386.

國際替代計量

以電流差動轉導放大器設計三階電子可調式正交震盪器

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