Electromagnetic crystal (EMXT) waveguide band-stop filter

Hao Xin, Aiden Higgins, Jonathan Hacker, Moonil Kim, Mark Rosker

    Research output: Contribution to journalLetterpeer-review

    9 Citations (Scopus)

    Abstract

    An electromagnetic crystal (EMXT) with a bandgap around 35 GHz is used as the top and/or bottom walls of a rectangular waveguide. Because of its bandgap, such an EMXT waveguide is a very effective band-stop filter with the rejection band centered at 35 GHz. More than 70 dB of isolation for the rejection band and less than 2 dB of insertion loss for the pass band are measured. Finite element simulation of the EMXT band-stop filter agrees very well with measurements. Using tunable EMXT walls, a band-stop filter with adjustable center frequency and bandwidth can also be realized.

    Original languageEnglish
    Pages (from-to)108-110
    Number of pages3
    JournalIEEE Microwave and Wireless Components Letters
    Volume13
    Issue number3
    DOIs
    Publication statusPublished - 2003 Mar

    Keywords

    • Band-stop filter
    • Electromagnetic band gap
    • Electromagnetic crystal
    • Waveguides

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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