Tunable microstrip quasi-elliptic function bandpass filters

W. Tang, J.-S. Hong

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

17 Citations (Scopus)

Abstract

In this paper, a new type of varactor-tuned microstrip quasi-elliptic function bandpass filter based on dual-mode open-loop resonator is investigated. By employing the unique characteristic of the dual-mode open-loop resonator, i.e. whose two operating modes (odd- and even-modes) do not couple to each other, tuning the passband frequency becomes simple with a single DC bias circuit. Two finite-frequency transmission zeros on each side of the passband are tunable along with the center frequency, resulting in high selective frequency response. A designed four-pole tunable bandpass filter of this type is demonstrated experimentally.
Original languageEnglish
Title of host publication2009 European Microwave Conference (EuMC)
PublisherIEEE
Pages767-770
Number of pages4
ISBN (Print)9781424447480
DOIs
Publication statusPublished - 30 Oct 2009
Event39th European Microwave Conference 2009 - Rome, Italy
Duration: 28 Sep 20092 Oct 2009
Conference number: EuMC 2009

Conference

Conference39th European Microwave Conference 2009
Country/TerritoryItaly
CityRome
Period28/09/092/10/09

Keywords

  • Dual-mode resonator filter
  • Microstrip filter
  • Tunable filter

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