参数可控二阶OTA—C滤波器的一种设计方法

A DESIGN METHOD OF BIQUARATIC OTA-C FILTER WITH CONTROLLED PARAMETERS

提出了通用二阶(双二阶)OTA-C滤波器的一种设计方法。该方法以传递函数的基本模块构成法为基础,针对OTA-C滤波器参数可控的特点,按照对可控参数的具体要求设计电路结构;可以方便设计一个或多个零、极点参数独立可控的通用二阶OTA-C滤波器,文中给出了设计实例。

A design method of general biquadratic OTA-C filter is presented. The method is based on the block diagram of transfer functions, and the selection of circuit structure depends upon the consideration of programmability of zero and pole parameters. By using this method a biquadratic OTA-C filter with one or more independentely controlled zero and pole parameters can be easily deciqned. Some design examples are presented.