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有源低通二阶滤波器的设计
引用本文:伍刚,张小平.有源低通二阶滤波器的设计[J].兵工自动化,2005,24(4):85-85,88.
作者姓名:伍刚  张小平
作者单位:攀枝花学院,电信学院,四川,攀枝花,617000
摘    要:采用计算法设计有源低通二阶滤波器,其电路从集成运放输出到同相输入间引入一个负反馈,该反馈使滤波器只允许低频端的信号通过,实现低通滤波.用查表法设计,已知电路响应特性、形式、类型及阶数、滤波器性能参数,再根据截止频率,选定电容标称值,查表求出相应电容值及电阻值,通过计算得到设计值以确定电路参数.

关 键 词:有源滤波器  低通二阶滤波  计算法  查表法  低通滤波  二阶滤波器  设计值  Second  Order  Filter  Active  电路参数  计算  电阻值  电容值  标称值  截止频率  性能参数  阶数  类型  响应特性  查表法  信号  低频  负反馈  同相输入
文章编号:1006-1576(2005)04-0085-01
收稿时间:2005-03-31
修稿时间:2005-03-312005-04-28

Design of Active Low-Pass Second Order Filter
WU Gang,ZHANG Xiao-ping.Design of Active Low-Pass Second Order Filter[J].Ordnance Industry Automation,2005,24(4):85-85,88.
Authors:WU Gang  ZHANG Xiao-ping
Abstract:The Active low-pass second order filter is designed with computing method, and a negative feedback was imported between input and amplification output of integrate circuit. The negative feedback made the signal of low frequency to pass the filter to realize low-pass filtering. For Table lookup design, firstly, know response characteristic, shape, type and order of circuit, and performance parameter of the filter. According to cut-off frequency, the nominal value of capacitance was selected, and the corresponding capacitance value and resistance value was extracted through table lookup. And then, the capacitance value and resistance value was computed to get design value to define circuit parameter.
Keywords:Active wave filter  Low-pass second order filter  Computing method  Table lookup
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