一种具有最少元件双二阶滤波器的OTA实现电路  

An OTA-C Realization of Biquadratic Filter with Minimum Components

作　　者：何怡刚[1] 

机构地区：[1]湖南大学电气系,长沙410082

出　　处：《固体电子学研究与进展》1998年第3期252-256,共5页Research & Progress of SSE

基　　金：国家自然科学青年基金;湖南省自然科学基金

摘　　要：提出了一种新的双二阶滤波器的OTA实现电路。该结构具有最少的元件，滤波器特性参数均可独立调节等特点。给出了二阶滤波器设计实例并经计算机仿真所验证。A novel structure of biquadratic filter using Operational Transconductance Amplifier (OTA) is presented. It has some advantages such as minimumcomponents. The filter characteristic parameters ω,Q and voltage gain can be tunedby external voltage or current. Design and simulation results of a second-order filterare given to demonstrate its feasibility.

关 键 词：有源滤波器 OTA-C滤波器 双二阶滤波器 

分 类 号：TN713.8[电子电信—电路与系统]