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Transducer isolation in surface acoustic wave processor

  • US 4,403,165 A
  • Filed: 05/07/1982
  • Issued: 09/06/1983
  • Est. Priority Date: 05/07/1982
  • Status: Expired due to Fees
First Claim
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1. A reflective Surface Acoustic Wave Device comprising:

  • piezoelectric means for acting as a base for mounting components and for transmitting surface acoustic waves between points on a surface thereof;

    at least two transducer means mounted on one end of said surface in parallel relationship with each other and with an axis defined by said base for converting signals between electric and acoustic;

    signal conditioning means for manipulating acoustic signals present on said surface, said means distributed on said surface away from said one end;

    signal blocking means defining a groove having a depth between one and ten acoustic wave lengths in said substrate for signals of interest located between said transducer means for blocking signals travelling a straight path from one transducer toward another.

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