Open AccessIndependently switchable quad‐band bandpass filter
Author(s) -
Weng SzChi,
Hsu KoWen,
Tu WenHua
Publication year - 2013
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0077
Subject(s) - band pass filter , passband , resonator , microstrip , wavelength , electronic engineering , optoelectronics , materials science , coupling (piping) , prototype filter , filter (signal processing) , topology (electrical circuits) , optics , physics , engineering , electrical engineering , low pass filter , metallurgy
A switchable microstrip quad‐band bandpass filter (BPS) is investigated in this study. Owing to the low loading effect from distributed coupling technique, many channels can be obtained without the requiring of complicated matching network. Each passband can be turned on and off independently. The switchable quad‐band BPS consisting of half‐wavelength/quarter‐wavelength resonators, loaded open stubs and p–i–n diodes features compactness and good selectivity. To validate this design concept, theory as well as experiment is presented and compared in this study.