用Tow-Thomas电路设计含有限非零传输零点有源滤波器的方法

A Method Used Tow-Thomas Circuit to Design Finite Nonzero Transmission Zeros Active Filters

Tow-Thomas电路是一种实现全极点滤波器的典型电路。本文给出了用Tow-Thomas电路设计含有限非零传输零点有源滤波器的方法,从而使Tow-Thomas电路可用于单片集成滤波器电路。而文中给出的公式可用于计算外接元件。设计实例表明了文中给出的计算公式的正确性。

Tow-Thomas circuit is a typical circuit to design all-poles filter. A method used Tow-Thomas circuit to design finite nonzero transmission zeros active filters is presented in this paper. The proposed circuit can be used to design monolithic integrated filter. Formulas are also given to calculate external elements. Design example confirms the validity of the design formulas.