• DocumentCode
    1745370
  • Title

    Double-mode SAW filters with improved selectivity

  • Author

    Loseu, Aleh

  • Author_Institution
    His-Rodos Co. Ltd., Minsk, Byelorussia
  • Volume
    1
  • fYear
    2000
  • fDate
    36800
  • Firstpage
    95
  • Abstract
    The present paper focuses on the improvement of the dual-mode SAW (DMS) filter selectivity. The closed-form expressions, based on a simple physical model, are derived to calculate the longitudinally coupled structures of various types (2-pole and 4-pole). Tests characteristics of similar filters demonstrate a good agreement of simulations and measurements. It is shown how the system parameters may be combined to manufacture the DMS filters with an insertion loss less than 3 dB and selectivity over 36 dB
  • Keywords
    interdigital transducers; modelling; radiofrequency filters; surface acoustic wave filters; 2-pole type; 3 dB; 4-pole type; closed-form expressions; double-mode SAW filters; insertion loss; longitudinally coupled structures; selectivity improvement; system parameters; Acoustic reflection; Bidirectional control; Equations; Frequency; Gratings; SAW filters; Testing; Tin; Transfer functions;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Ultrasonics Symposium, 2000 IEEE
  • Conference_Location
    San Juan
  • ISSN
    1051-0117
  • Print_ISBN
    0-7803-6365-5
  • Type

    conf

  • DOI
    10.1109/ULTSYM.2000.922515
  • Filename
    922515
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1745370