基于MAX293的抗混滤波器研制  

Development of an anti alias filter based on MAX293

作　　者：陈照章[1] 唐平[1] 李天博[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《半导体技术》2002年第12期34-36,47,共4页Semiconductor Technology

基　　金：机械工业技术发展基金会资助(97JA0207)

摘　　要：简介了研制的随机振动信号处理虚拟仪器系统的组成。叙述了其中的抗混滤波器的作用与要求,并在分析8阶低通椭圆开关电容滤波器(MAX293)性能的基础上,研制了基于MAX293的抗混滤波器。尤其对遇到的“共振”现象作出了理论分析及实验验证,同时给出了解决方法。该抗混滤波器具有电路简单、变带宽方便、过渡带衰减迅速等优点。The composition of the developed virtual instrument system of processing a randomvibration signal is introduced. The action and demand of the anti alias filter in the system arerecounted. After analyzing the 8-order low pass elliptic switched capacitor filter (MAX293), the antialias filter is developed based on it. Specifically, the “resonance”phenomenon is analyzed theo-retically and the analysis is proved by the experiment. The “resonance”is avoided. The antialias filter has the performance of the circuit being simple, the change of the pass band convenient,and the attenuation of the transition band sharp.

关 键 词：MAX293 抗混滤波器 信号处理 虚拟仪器 开关电容滤波器 

分 类 号：TN713[电子电信—电路与系统]