MC Filter Approximation Theory:T(@) We want to determine classes of rational polynomials that approximate the "Ideal"low-pass filter response (high-pass band-pass and band-stop filters can be derived from a low pass design) mtoj=7+o 1 F(⊙)=Tn(⊙) H(o)2 1-6 ① -8 -6-4 -20 2 .4{ynh,cxh}@ustc.edu.cn Filter Approximation Theory: Tn (ω) We want to determine classes of rational polynomials that approximate the “Ideal” low-pass filter response (high-pass band-pass and band-stop filters can be derived from a low pass design)