Frequency response control in frequency-tunable bandstop filters

Juseop Lee, Eric J. Naglich, William J. Chappell

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


This letter presents a tunable bandstop filter with the capability of controlling the shape of the frequency response. The proposed filter structure can be tuned to have either a Butterworth or a Chebyshev response. The filter can also be tuned to have different center frequencies. Both the frequency response and the center frequency of the filter can be tuned by only adjusting the resonant frequency of each resonator without controlling inter-resonator coupling. Since the proposed filter structure has non-zero inter-resonator coupling, it can find its future application in reconfigurable filters which can be tuned to exhibit either a bandstop or a bandpass response.

Original languageEnglish
Article number5613953
Pages (from-to)669-671
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number12
Publication statusPublished - 2010 Dec
Externally publishedYes


  • Bandstop filter
  • Butterworth filter
  • Chebyshev filter
  • filter synthesis
  • resonator filter

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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