Non-reflective band-pass filters based on two-wire and three-wire coupled lines

This paper presents a comparison of the parameters of two non-reflective stripe filter designs, differing in the type of coupled lines used. The first design utilizes two-wire coupled lines, while the second utilizes three-wire coupled lines. The feasibility of implementing non-reflective filters using two- and three-wire coupled lines is demonstrated. A comparison of the frequency responses of non-reflective filters with different coupled line designs is provided.