Open AccessDesign of compact microstrip bandpass filter with two switchable operating passbands
Author(s) -
Chen ChiFeng,
Tseng HsinYa,
He YiHua,
Li WenJie
Publication year - 2022
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12336
Subject(s) - band pass filter , passband , chebyshev filter , resonator , microstrip , materials science , attenuation , topology (electrical circuits) , optoelectronics , filter (signal processing) , electronic engineering , physics , optics , electrical engineering , engineering
A new bandpass filter (BPF) with two switchable operating passbands has been proposed. The BPF topology is formed by switchable resonators and stepped‐impedance resonators. The two operating bands can be switched on and off independently. For verification, a switchable BPF with a third‐order Chebyshev bandpass response was designed and fabricated using microstrip technology. The developed BPF was measured to verify the predicted and simulated results. A close agreement was observed between them. The proposed switchable BPF has good in‐band and out‐of‐band performances. Besides, the attenuation is > 30 dB as the passband is switched off.