【摘要】 首先分析了一种由N对零极子和2N个导纳构成的基本电路。从分析结果中推导出实现N阶电流传递函数的条件。把零极子用电流传输器取代后，构成了N阶低通或高通电流型滤波电路。N阶电路使用N＋1个CCⅡ器件，所有RC元件接地，使电路得以稳定地工作。更多还原

【Abstract】 This paper outlines a fundamental circuit consisting of N nullat0r-norat0r pairs and 2N admittaces,and found out the conditions of Nth order current transfer function. By replacing nullator-norator pairs with current conveys,the Nth order lowpass or hlghpass current-mode active filter is realized- The Nth order actlve fllter includes N+ 1CC Ⅱ elements. With all the admittance consisting of C and/or R be grounded,the circuit is stable over the w1de frequency range.更多还原