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RFID tag

  • US 7,516,901 B2
  • Filed: 10/24/2005
  • Issued: 04/14/2009
  • Est. Priority Date: 03/16/2005
  • Status: Expired due to Fees
First Claim
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1. An RFID tag comprising:

  • a transmitting and receiving antenna formed on a substrate;

    a detecting block having a pattern formed on the substrate in a circumference of the antenna and operable to detect breakdown of the pattern of the detecting block on the substrate; and

    an electronic component connected to the antenna and the detecting block;

    wherein the detecting block is formed of a conductive material and loops of two lines, and has a length of a non-integer multiple of a half-wavelength of an operating frequency of the RFID tag, in order to not change a transmitting distance regardless of discommunication of the loops.

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