A Novel Model of Small Sized Dual-Band Rectangular Ring Bandpass Filter

Abstract

In this paper a novel small size dual-band rectangular ring band-pass filter is designed using new equivalent loaded coupled lines. Any line of the designed filter by CUSTODIO PELXEIRO is replaced by the new equivalent loaded coupled lines, so the size of new filter is reduced about 42% with the same frequency performance. This type of filter has some applications in GSM & DCS systems.