Octave tunable lumped-element notch filter with resonator-Q-independent zero reflection coefficient

Tsung Chieh Lee, Ju Seop Lee, Eric J. Naglich, Dimitrios Peroulis

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

    21 Citations (Scopus)

    Abstract

    A bandstop filter architecture with small form factor and very large attenuation over an octave frequency tuning range is demonstrated. The architecture provides a benefit of resonator-Q-independent zero reflection coefficient at the center frequency, and is demonstrated with a tuning range of 55.04 to 133.34 MHz varactor-tuned two-resonator notch filter with minimum notch attenuation of 64 dB, 3-dB fractional bandwidth (FBW) of 10.86% to 3.22% over the tunable frequency range and passband up to 356.5 MHz, resulting in a 6.48-to-1 upper passband, in a footprint of 2.27×1.65 cm2. The unloaded quality factor (Q-factor) was extracted to be 62 at 133.34 MHz.

    Original languageEnglish
    Title of host publicationIEEE MTT-S International Microwave Symposium Digest
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Print)9781479938698
    DOIs
    Publication statusPublished - 2014 Jan 1
    Event2014 IEEE MTT-S International Microwave Symposium, IMS 2014 - Tampa, FL, United States
    Duration: 2014 Jun 12014 Jun 6

    Other

    Other2014 IEEE MTT-S International Microwave Symposium, IMS 2014
    Country/TerritoryUnited States
    CityTampa, FL
    Period14/6/114/6/6

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Radiation
    • Condensed Matter Physics

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