提出了由电压模式有源RC滤波器导出基于第三代电流传输器的电流模式滤波器的方法.所得的电流模式二阶滤波器结构简单,能实现二阶低通,高通,带通滤波,不仅所有无源和有源灵敏度都很低,而且当无源参数确定后,有源参数对极点频率不产生影响,保持恒定.HSPICE仿真表明,所提出的电路是可行的.
This article describes a new method of changing the variable of state active RC filter to current-mode filter base on the third-generation current conveyor.The filter can realize second order low-pass,high-pass,band-pass filtering functions.The proposed circuits have not only simple structure,low passive and source sensitivity,but also source parameter has nothing of pole frequency.The results of HSPICE simulation demonstrate the feasibility of the proposed circuits.