基于改进的Butterworth传递函数的高阶低通有源滤波器的设计

An Electrical Design of High-grade Low-pass Filter Based on the Improved Form of Butterworth Transfer Function

Butterworth传递函数随着阶数增大,超调量增大,单位阶跃响应品质变差,同时也影响了滤波器的性能。文中在改进的Butterworth传递函数基础上,根据Butterworth的逼近性原理,通过级联途径设计工作状态更好的有源高阶低通滤波器。

With the increase of the order of Butterworth transfer function,its overshoot is increased and its step response quality is reduced.At the same time.it influences the capability of filter.Based on the improved Butterworth transfer function and the Butterworth transfer function,this paper shows an electrical design of high-grade low-pass filter meet- ing the higher requirements.