中原大學電機工程學系
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使用單端輸入的OTA和接地電容所設計的高階濾波電路
指導老師:張俊明   組長:張哲瑋   組員:吳啟華、張智皓、劉志詳、江建宏
本文旨在以分析和成電路法,將一個N階複雜的轉移函數用代數方法分解成N+1個簡單而容易實現的方程式,再將這N+1個被實現的小電路合併起來就形成吾人所要設計的複雜電路。用這個分析合成電路設計法,本文設計出一個單輸入多輸出的多功能濾波電路,及一個將單輸入信號分配到不同輸出節點的單輸出通用濾波電路。模擬結果證實所設計電路的實用性。
Abstract—Despite the wealth of literature on operational
transconductance amplifier (OTA)-C filters, the synthesis of
high-order filter characteristics is still an active topic. In this
paper the realization of voltage transfer functions based on
canonical current-mode follow-the-leader-feedback (FLF) OTA-C structures are investigated. Two new structures are presented, which use only single-ended-input OTAs and grounded capacitors.
The first structure has a single voltage input and multiple voltage outputs taken from different nodes, which enables it to provide simultaneous outputs of different filter functions. The second structure has a single voltage output and single voltage input distributed to different circuit nodes for a universal realization. The authors not only propose such filter structures, but also show how analytical synthesis can be used to produce filter circuits that have less active elements than those recently reported voltage-mode structures which are based on differential-input OTAs. This represents another attractive feature from chip area, and power consumption point of view. Simulation results verifying the theoretical analysis of the proposed filter structure are included.
我們決定將壓電陶瓷晶片和鞋子做結合。
   
 
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