LC滤波器设计的优化解析公式(英文)

Modified explicit formulas for optimal LC prototype filter design

给出了改进的Chebyshev和Butterworth低通原型LC滤波器的解析设计公式.此公式充分利用阶数取整带来的余量,在不改变滤波器阶数的前提下减小了通带波动,极大地方便了集成滤波器的实现.给出了集成有源高通滤波器设计实例,验证了改进的Chebyshev和Butterworth低通原型LC滤波器解析设计公式的有效性.

The modified explicit formulas for Chebyshev and Butterworth LC low-pass filter design are given in this paper. These formulas fully utilize the passband tolerance obtained by rounding off the order and reduce the passband ripple without any change of the filter order, greatly facilitating the realization of the integrated filter. A design example for integrated active high-pass filters is presented and the effectiveness of the above-mentioned modified explicit formulas is verified.