Open AccessA novel reconfigurable tri-mode resonator and its application to bandpass filter
Author(s) -
Jun Cheng,
Xiushan Liu,
Qin Zhang
Publication year - 2022
Publication title -
thermal science/thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci2202131c
Subject(s) - passband , band pass filter , resonator , filter (signal processing) , elliptic filter , transition band , microstrip , materials science , physics , acoustics , optoelectronics , prototype filter , low pass filter , optics , computer science , computer vision
A reconfigurable tri-mode resonator and its application to tri-band bandpass filter have been demonstrated. The proposed filter exhibits 32.8% fractional tuning range of the first passband from 1.12-1.56 GHz and 12.73% of the third pass-band from 2.50-2.84 GHz, and a fixed second passband at 2 GHz, respectively. The first and third frequency passbands can be tuned independently without interfering with each other. Especially, the filter uses a hybrid technique of lumped inductors and microstrip lines, resulting in a very compact mechanical size of 0.12 ?g ? 0.08 ?g, where ?g is the guided wavelength on the substrate at the central of the first passband frequency. The measured results agree well with the simulated ones.