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Surface-wave transducer device and identification system with such device

  • US 6,788,204 B1
  • Filed: 03/02/2000
  • Issued: 09/07/2004
  • Est. Priority Date: 03/15/1999
  • Status: Expired due to Fees
First Claim
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1. Surface-wave transducer device comprising a combination of a first transmitter device of a dispersive type and a second transmitter device of a non-dispersive type, comprising a multiplicity of n non-dispersive transducers which can be coded or are coded with an identification code, characterized in that at least one of the transducers of the non-dispersive type has a positive electrode, a negative electrode, and first connection lines which connect the positive electrode and the negative electrode to respectively two bus lines, further characterized in that at least one electronic switch is situated in at least one of the connection lines.

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