• DocumentCode
    988901
  • Title

    Behaviour of device structures based on IDT-launched bulk acoustic waves in a parallel-sided plate of lithium niobate

  • Author

    Bloch, P.D. ; Doe, N.G. ; Paige, E.G.S.

  • Author_Institution
    University of Oxford, Department of Engineering Science, Oxford, UK
  • Volume
    19
  • Issue
    21
  • fYear
    1983
  • Firstpage
    871
  • Lastpage
    873
  • Abstract
    We present device responses due to fast shear and longitudinal waves, which propagate between a pair of IDTs on an upper surface via a reflection from the lower surface of a parallel-sided plate of 41°-rotated Y-cut lithium niobate. Single-mode response can be obtained by removing unwanted modes using saw cuts in the crystal substrate. Centre-frequency and bandwidth enhancement of a factor of two or more are achievable compared with the SAW response of the same IDTs.
  • Keywords
    lithium compounds; ultrasonic devices; ultrasonic transducers; IDT; IDTs; LiNbO3 plate; Y-cut; bandwidth enhancement; bulk acoustic waves; centre-frequency enhancement; interdigital transducers; longitudinal waves; parallel-sided plate; shear waves; single-mode response;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19830593
  • Filename
    4248121
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=988901