- 學位論文
以電流式主動元件設計之類比電路
The Design of Analog Circuit Using Current-Mode Active Components
摘要
近幾年來，電流式主動元件很受學者以及業界的歡迎，原因是電流式電路的優越性已被證實 ，它們具較大的頻寬及增益、較大的動態範圍、較精確的結果、較低的功率損耗及較小晶片面積的電路結構等優點 。本篇論文主要是以電流回授放大器所設計之類比濾波電路為主要研究對象，並將內容以其不同的應用方式分為兩個主題。 首先參考近年來各界學者使用電流回授放大器所設計的三輸入單輸出二階萬用濾波器及單輸入多輸出二階萬用濾波器，以便學習和瞭解如何使用電流回授放大器設計更精簡之二階萬用濾波器。 其次提出一個電壓式二階萬用濾波器，此電路是個四輸入和單一輸出萬用二階濾波器，這個被提出的電路使用一個電流回授放大器、兩個電容器和三個電阻器，這簡單的結構僅使用單一顆主動元件。 對論文中所提出之電路作了SPICE模擬及實驗且與理論分析相符合。
關鍵字
萬用濾波器並列摘要
In recent years, the current-mode active components is popular in scholastic discussion and commercially used. Current-mode active components have the advantages of wider bandwidths, larger dynamic range, lower power-consumption, smaller area and easier to design. The object of this study is the design analog filter circuit using current-feedback amplifier. This thesis divided into two topics. First, several current-feedback amplifiers to carry out the three-inputs and single-output, second-order universal filter and the single-input and multi-outputs second-order universal filter published in the recent years. I study them in order to find out the skills of designing analog circuits. Second, a voltage-mode four-inputs and single-output second-order universa filter is proposed. The proposed circuit employs only one current-feedback amplifier, two capacitors and three resistors. The use of only one active components simples configuration. PSpice simulation and experimental results of the proposed circuit consist with the theoretical results.