基于静电探测的模拟滤波器的研究  

Study on the Analog Filter Based on the Static Detecting

作　　者：林蔚[1] 崔占忠[1] 徐立新[1] 李彦旭[1] 

机构地区：[1]北京理工大学机电工程学院,北京100081

出　　处：《半导体技术》2006年第3期222-226,共5页Semiconductor Technology

摘　　要：在静电探测输出信号特性分析的基础上,引入了静电探测信号检测电路,根据滤波性能指标, 设计了适用于静电探测的低通滤波器,并对所设计的模拟低通滤波器进行了仿真验证。该滤波器在400Hz 以内基本上没有衰减,延时基本上在1ms左右。当频率为500Hz时,电压衰减为85％左右,即衰减为1． 41 dB,阻带衰减值大于30dB。所设计的模拟低通滤波器基本上满足了静电探测的设计需求指标。Based on the static detecting analyze of output signal characteristics, the signal detecting circuit for static detecting was introduced. According to the properties, the low band pass filter for static detecting was designed, and validated by simulation. It has almost no degradation within 400Hz, the delay is about lms, the voltage degradation is about 85% at 500Hz, it means the degradation is 1.41dB, stop band degradation is 〉30dB. The designed low band pass analog filter basically met the requirement of static detecting.

关 键 词：静电探测 滤波 输出信号 

分 类 号：TN713[电子电信—电路与系统]