Compact tunable microstrip bandpass filters with asymmetrical frequency response

W. Tang, J.-S. Hong, Y.-H. Chun

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

26 Citations (Scopus)


A new type of electronically tunable asymmetric frequency response bandpass filter based on dual-mode open-loop resonator is investigated. By employing the unique characteristic of the dual-mode open-loop resonator, that is, whose two operating modes (odd-and even-modes) do not couple to each other, tuning the passband frequency becomes simple with single DC bias circuit. Two designed tunable bandpass filters of this type are demonstrated experimentally, which show more than 10 dB of return loss and less than 3 dB insertion loss over a tuning range of 12% from 0.83 to 0.93 GHz.
Original languageEnglish
Title of host publication38th European Microwave Conference 2008
Number of pages4
ISBN (Print)9782874870064
Publication statusPublished - 19 Jan 2009
Event38th European Microwave Conference 2008 - Amsterdam, Netherlands
Duration: 27 Oct 200831 Oct 2008


Conference38th European Microwave Conference 2008
Abbreviated titleEuMC 2008


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