A wideband bandpass filter using combined λ/4 stepped-impedance resonators

Lian Yu Chen, Chung I.G. Hsu, Ching-Her Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper presents a wideband bandpass filter (BPF) designed using novel multi-mode resonators (MMRs). The MMR is formed by combining two quarter-wavelength (λ/4) stepped-impedance resonators (SIRs) in a proper fashion. The fundamental resonant frequency of the inherent λ/4 SIR and that of the embedded half-wavelength (λ/4) 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.

Original languageEnglish
Title of host publicationTENCON 2007 - 2007 IEEE Region 10 Conference
Publication statusPublished - 2007 Dec 1
EventIEEE Region 10 Conference, TENCON 2007 - Taipei, Taiwan
Duration: 2007 Oct 302007 Nov 2

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON


OtherIEEE Region 10 Conference, TENCON 2007

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

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