设计七阶无源椭圆滤波器 有需要的同学们可以下载来看看 -Seventh order elliptic filter design passive students need to see is available for download

理解有源滤波器的工作原理、性能特点。学习有源滤波器的设计方法。-Understand the working principle of active filter performance characteristics. Learning active filter design methods.