A tunable bandpass-to-bandstop reconfigurable filter with independent bandwidths and tunable response shape

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

Research output: Contribution to journalReview articlepeer-review

84 Citations (Scopus)

Abstract

The theory of bandpass-to-bandstop reconfigurable filters is developed in this work, and example filters are demonstrated. Designs are developed that allow for reconfigurable response shape and independent bandwidths in the bandpass and bandstop modes of the filter. These capabilities could potentially be useful in dynamic, open spectrums, concurrent transmit-receive systems, and multimode antenna array applications. The demonstrated filters were fabricated using substrate integrated evanescent-mode cavity resonators. The resonators are tuned using deformation of a copper membrane induced by a piezoelectric actuator. In measurement, a 1.06% 3-dB bandwidth bandpass filter with 2.6-dB passband insertion loss was switched to a 0.82% 3-dB S11 bandwidth bandstop filter with 45 dB of isolation.

Original languageEnglish
Article number5634149
Pages (from-to)3770-3779
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Volume58
Issue number12 PART 1
DOIs
Publication statusPublished - 2010 Dec
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received June 03, 2010; revised August 20, 2010; accepted August 30, 2010. Date of publication November 11, 2010; date of current version December 10, 2010. This work was supported by the Defense Advanced Research Projects Agency Analog Spectral Processors Grant under program manager Sanjay Raman.

Keywords

  • Adaptive filters
  • cavity resonator filters
  • elliptic filters
  • switched filters
  • tunable filters

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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