A Miniaturized Switching Band-stop Filter Module with High Isolation

This paper presents a miniaturized switching band-stop filter module with high isolation. The design of the band-stop filter in the switched band-stop filter module adopts multiple quarter wavelength branches to introduce the transmission zero point, which has small volume and high integration; The coplanar waveguide (CPW) structure solves the problem of low isolation in the process of component filtering, which can be more than 10dB higher than that of ordinary microstrip line structure.