摘要
运算放大器和电阻、电容构成的有源滤波器具有显著的优点,在现代电子技术中得到广泛的应用。在对VCVS滤波电路的传递函数分析的基础上,设计了基于切比雪夫逼近的有源低通滤波器。根据滤波器性能参数及截止频率,选定电容标称值,查表得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,用Multisim 7软件对设计的低通滤波器进行了理论分析和验证,得出了具有一定参考价值的结论。
The active filter with resistance,capacitance and Operational Amplifier （OA） is widely applied to the modern electronic technology with prominent effects. A low pass filter which approximates to Chebyshev is designed on the basis of analysis of transfer function of VCVS circuit of wave. The nominal value of capacitance is selected according to the performance parameter of the filter and its cut off frequency, and the corresponding capacitance value and resistance value are extracted through table lookup. And then, the design value after computation is obtained to define circuit parameter,and this paper comes to some valuable conclusions through the theoretical analysis and verification of the designed low pass filter with Multisim 7 software.
出处
《现代电子技术》
2007年第12期181-183,共3页
Modern Electronics Technique
