Hosaeng Kim (hosaeng@umn.edu) Advanced Design System (ADS) Tutorial This tutorial describes how to analyze a stepped impedance filter using Advanced Design System (ADS) step by step. STEPPED-IMPEDANCE FILETER DESIGN The figure below shows the design layout of the stepped-impedance low pass filer obtained in Example 8.6 in Microwave Engineering, 3rd, Pozar. This filer has a cutoff frequency at 2.5GHz and more than 20dB insertion loss at 4GHz.