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Title: A wideband bandpass filter using combined λ /4 Stepped-Impedance Resonators
Authors: Chen, Lian-Yu;Hsu, Chung-I G.;Lee, Ching-Her
Contributors: 電子工程學系
Date: 2007-10
Issue Date: 2012-05-29T01:26:10Z
Publisher: IEEE
Abstract: This paper presents a wideband bandpass filter (BPF) designed using novel multi-mode resonators (MMRs). The MMR is formed by combining two quarter-wavelength ( lambda/4 ) stepped-impedance resonators (SIRs) in a proper fashion. The fundamental resonant frequency of the inherent lambda/4 SIR and that of the embedded half-wavelength ( lambda/2 ) SIR were designed to be located in the passband of the BPF. Experiments on a second-order wideband BPF were carried out for validating the filter design. The fabricated BPF was measured to have a large bandwidth of 1:2.1 with a minimum insertion loss of only 0.35 dB and a small group-delay variation of not more than 0.15 ns in the passband.
Relation: Session WeAP-O3, Antennas and Propagation Track, IEEE TENCON 2007, Taipei, Taiwan, Oct. 2007
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