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Radio frequency surface acoustic wave proximity detector

  • US 20080129144A1
  • Filed: 12/05/2006
  • Published: 06/05/2008
  • Est. Priority Date: 12/05/2006
  • Status: Active Grant
First Claim
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1. A proximity sensor for determining a position of an object comprising:

  • (a) a SAW device having a load end and an input end, wherein the input end is adapted and configured to receive an input pulse; and

    (b) a sensing section operatively connected to the load end of the SAW device,wherein the sensing section is adapted and configured such that, when the object is in a first position, the sensing section provides a first response indicative of the first position and, when the object is in a second position, the sensing section provides a second response indicative of the second position, andwherein the position of the object is determined based upon a reflection of the input pulse.

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