Tunable bandstop filter with a 17-to-1 upper passband

Eric J. Naglich, Juseop Lee, Dimitrios Peroulis

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

16 Citations (Scopus)


Tunable bandstop filters with wide upper passbands are important in systems that operate over a wide frequency range in the presence of dynamic interference. This paper shows a tunable bandstop filter with a 17-to-1 ratio between its upper passband cutoff frequency and its lowest notch center frequency. The wide upper passband results from the combination of highly-loaded resonators and a new external coupling structure that is well-matched to the filter's port impedance over a wide frequency range. The filter described in this paper can attenuate a UHF signal while allowing for low-loss transmission or reception of signals at X-band frequencies.

Original languageEnglish
Title of host publicationIMS 2012 - 2012 IEEE MTT-S International Microwave Symposium
Publication statusPublished - 2012
Event2012 IEEE MTT-S International Microwave Symposium, IMS 2012 - Montreal, QC, Canada
Duration: 2012 Jun 172012 Jun 22

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Other2012 IEEE MTT-S International Microwave Symposium, IMS 2012
CityMontreal, QC


  • Filters
  • Microwave filters
  • Passive filters
  • Tunable filters
  • Tunable resonators

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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