Bandwidth and Transmission Zero Control for Compact Dual-Mode Resonator Filter by Extraction of EM Coupling

Shao-Chan Tang, Jen-Tsai Kuo, Shyh-Jong Chung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The electric coupling and magnetic coupling are extracted for a dual-mode resonator filter. The resonator is a half-wave section with its center being shorted to ground. The extraction relies on an equivalent circuit model. With properly tuning of the coupled-line sections, the electric and magnetic coupling coefficients of the two quarter-wave resonators can be adjusted, and hence both the filter bandwidth and zero frequency can be controlled. Two experimental filters are fabricated and measured for validation. Good agreement between measurement and simulation is obtained.
Original languageEnglish
Title of host publication2012 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC 2012)
PublisherIEEE
Pages661-663
Number of pages3
ISBN (Print)978-1-4577-1330-9, 978-1-4577-1331-6
DOIs
StatePublished - 4 Dec 2012

Publication series

NameAsia Pacific Microwave Conference-Proceedings

Keywords

  • Bandpass filter
  • dual-mode resonator
  • transmission zero
  • electric coupling
  • mixed coupling
  • magnetic coupling

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