Design table formation of stepped impedance prototype filters

Abstract

In literature there exist some tables containing normalized element values to design low-pass lumped-element prototype filters with several different responses like maximally flat or equal-ripple. In this work an algorithm is presented to form such tables for stepped impedance prototype filters. By using the proposed algorithm a table for 0.5 dB equal-ripple stepped impedance prototype filter is formed. Then a design example is given to show the utilization of the formed table.