A reconfigurable bandpass-bandstop filter based on varactor-loaded closed-ring resonators [Technical Committee]
作者： Yi-Ming Chen , Sheng-Fuh Chang , Cheng-Yu Chou , Kun-Hsing Liu
关键词: Low-pass filter 、 Band-pass filter 、 Varicap 、 Capacitive sensing 、 Reconfigurability 、 Resonator 、 Band-stop filter 、 Topology 、 Electrical engineering 、 Reactance 、 Engineering
摘要: In this article, a novel reconfigurable bandpass-bandstop filter based on the varactor-loaded closed-ring resonators is presented, where bandpass and bandstop characteristics can be easily controlled by tuning varactor bias voltage. This reconfigurability results from perturbation effect degenerated even odd modes of resonator. When at series resonance, its reactance vanishes, so characteristic formed. changed to capacitive, generated. Additional varactors, incorporated input output ports, are tuned along with varactors maintain good return losses.
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