• DocumentCode
    49646
  • Title

    Study on slot irises for tunable filters using TE011 mode

  • Author

    Changsoo Kwak ; Manseok Uhm ; In-Bok Yom

  • Author_Institution
    Satellite & Wireless Convergence Res. Dept., ETRI, Daejeon, South Korea
  • Volume
    51
  • Issue
    3
  • fYear
    2015
  • fDate
    2 5 2015
  • Firstpage
    266
  • Lastpage
    268
  • Abstract
    Tunable filters using the TE011 mode have slot irises for coupling between cavities. Unless the slot iris is appropriately designed, the coupling value of the iris varies as an operating frequency changes and the filter performance deteriorates as a result. In this reported work, it was found that the frequency-dependent coupling characteristic of the slot iris can be minimised by locating the iris appropriately. Why the coupling of a slot iris changes when the operating frequency is tuned is explained and how to find the optimum location of the slot iris for minimum variation of the coupling value is presented. The proposed theory is verified by full-wave EM simulations and experiments with a Ka-band two-pole filter.
  • Keywords
    cavity resonator filters; electromagnetic coupling; microwave filters; Ka-band two pole filter; TE011 mode; cylindrical cavity; frequency-dependent coupling characteristic; full wave EM simulation; operating frequency tuning; slot iris design; tunable filters;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2014.3552
  • Filename
    7029817
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=49646