• DocumentCode
    2657621
  • Title

    Tunable filter using ultra wide band elastic resonator

  • Author

    Kadota, Michio ; Ogami, Takashi ; Kimura, Tetsuya

  • Author_Institution
    Kadota Lab./Murata Manuf. Co. Ltd., Yasu, Japan
  • fYear
    2012
  • fDate
    21-24 May 2012
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    Currently, a mobile phone with multi-bands and a cognitive radio system require tunable filters with a wide tunable range. Ultra wide band resonator is important device to realize the tunable filter. This time, authors realized resonators with an ultra wide bandwidth of 26 % and a large impedance ratio of 92 dB between resonant and anti-resonant frequencies using a plate wave in a LiNbO3 plate. In addition, a band pass type tunable filter with a tunable range of 16 % was realized using the resonators.
  • Keywords
    band-pass filters; cognitive radio; lithium compounds; mobile handsets; surface acoustic wave filters; surface acoustic wave resonators; LiNbO3; antiresonant frequencies; band-pass type tunable filter; cognitive radio system; mobile phone; surface acoustic wave resonators; ultrawide band elastic resonator; Band pass filters; Bandwidth; Couplings; Electrodes; Lithium niobate; Resonant frequency; Resonator filters;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Frequency Control Symposium (FCS), 2012 IEEE International
  • Conference_Location
    Baltimore, MD
  • ISSN
    1075-6787
  • Print_ISBN
    978-1-4577-1821-2
  • Type

    conf

  • DOI
    10.1109/FCS.2012.6243609
  • Filename
    6243609
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2657621