Discussion and Application of Blltterworth Approximate in the Circuit Theory
Yu Lu · Modern Electronics Technique · 2006
Based on the error function,Blltterworth polynomial theory and the filter analysis method in the practical circuits,this paper discusses how to overcome and solve the error asymmetry of the filter.By this means,the filter could achieve better attenuation characteristic and realize the maximal flatness to satisfy the multi parameter requirements of the passband and stopband.The method mentioned above is the Blltterworth approximate,which is applied to approximately analyze the filter error distributing.We illustrate the filter designing process which used the method of the Blltterworth approximate.