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Multiple piezoelectric transducer array

  • US 6,411,015 B1
  • Filed: 05/09/2000
  • Issued: 06/25/2002
  • Est. Priority Date: 05/09/2000
  • Status: Expired due to Term
First Claim
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1. A transducer comprising:

  • a piezoelectric film comprising a plurality of alternating concave and convex regions;

    first and second electrodes disposed respectively on a top surface and a bottom surface of said piezoelectric film;

    said piezoelectric film responsive to a first signal incident thereon to cause each of said concave and convex regions to vibrate with opposite phase to cause said transducer to operate at a given frequency, wherein said alternating concave and convex regions have different radii.

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