二阶压控电压源低通滤波器设计

本文详细介绍二阶压控电压源低通滤波器的设计方法,给出了其通用表达式。设计方法是根据所需转折频率,在1:2至1:10较宽的范围内灵活取两电容值,再计算出与灵活选取的电容准确匹配的电阻阻值。相对于查表法、图示法取值更具灵活性和实用性,由于不需要精确匹配成本较高的电容,此方法还具有成本较低的优势。用Multisim-10仿真软件对所设计的二阶压控电压源低通滤波器进行模拟仿真,结果表明与理论计算符合得很好。

Design of Low-pass Filter of Second-order Voltage-controlled Voltage Source

This paper describes the design method for low-pass filter of second-order voltage-controlled voltage source,and gives its general expression. The design approach is based on the required cut-off frequency; within a wider range from 1:2 to 1:10 to flexibly take two capacitance values,and then calculate out the exact resistor's resistance values matched with the flexibly selected capacitors. Compared with the look-up table method,graphic method is more flexible and practical; moreover due to needless to exac...