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Multi-mode tags and methods of making and using the same

  • US 7,750,792 B2
  • Filed: 10/11/2007
  • Issued: 07/06/2010
  • Est. Priority Date: 10/11/2006
  • Status: Expired due to Fees
First Claim
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1. A multi-mode identification tag, comprising:

  • a) an antenna;

    b) an electronic article surveillance (EAS) function block coupled to the antenna;

    c) one or more RFID function blocks coupled to the antenna in parallel with the EAS function block; and

    d) a rectifier configured to become (i) substantially disabled in an electric field having an energy below a first predetermined threshold and (ii) substantially enabled when the energy of the electric field is above a second predetermined threshold, the second threshold being greater than or equal to the first threshold;

    wherein (i) the tag has a high Q state in the electric field having an energy below the first predetermined threshold, and (ii) the tag has a low Q state in the electric field having an energy above the second predetermined threshold.

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