Investigation of higher order reentrant modes of a cylindrical reentrant-ring cavity resonator

Yaohui Fan, Z. Zhang, N.C. Carvalho, Jean-Michel Le Floch, Q. Shan, Michael Tobar

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    Analysis of the properties of resonant modes in a reentrant cavity structure comprising of a post and a ring was undertaken and verified experimentally. In particular we show the existence of higher order reentrant cavity modes in such a structure. Results show that the new cavity has two re-entrant modes, one of which has a better displacement sensitivity than the single post resonator and the other with a reduced sensitivity. The more sensitive mode is better than the single post resonator by a factor of 2 to 1.5 when the gap spacing is below 100 μm. This type of cavity has the potential to operate as a highly sensitive transducer for a variety of precision measurement applications, in particular applications which require coupling to more than one sensitive transducer mode. © 2014 IEEE.
    Original languageEnglish
    Pages (from-to)1657-1662
    JournalIEEE Transactions on Microwave Theory and Techniques
    Volume62
    Issue number8
    DOIs
    Publication statusPublished - Aug 2014

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