基于开关电容技术的巴特沃斯滤波器设计及PSpice仿真研究  

Design of Butterworth Filter Based on Switch-Capacitance and Its PSpice Simulation

作　　者：熊健[1] 王福明[1] 

机构地区：[1]中北大学,山西太原030051

出　　处：《现代电子技术》2007年第23期174-175,179,共3页Modern Electronics Technique

摘　　要：应用开关电容技术对四阶巴特沃斯滤波电路进行变换和简化,设计了一个集成式巴特沃斯滤波电路。该设计运用LF411运算放大器及开关电容时域宏模型,开关电容的时钟频率可调,可以构成多阶多截止频率的滤波器。PSpice仿真说明,其结果与理论计算值基本一致,可为以后的设计研究提供充分的依据。By adopting switch- capacitance technology, Butterworth filter circuit could be alternated and simplified. Using LF411 operation amplifier and macro -model of a switch -capacitance in time -domain, its clock frequency is alterable. PSpice simulator show that,the simulation results are very agreement with the theoretical values. It supplies plenitude foundation for design aftertime.

关 键 词：巴特沃斯滤波器 开关电容 时钟频率 宏模型 PSPICE 

分 类 号：TN43[电子电信—微电子学与固体电子学]