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RFID tag uncoupling one of its antenna ports and methods

  • US 7,667,589 B2
  • Filed: 07/14/2004
  • Issued: 02/23/2010
  • Est. Priority Date: 03/29/2004
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a semiconductor substrate having formed therein an integrated circuit (IC) that includes a first antenna port and a second antenna port; and

    a first antenna formed integrally with the semiconductor substrate and electrically coupled to the first port,wherein at least one of the first antenna and a second antenna that is coupled to the second port and is not formed integrally with the semiconductor substrate is capable of operating together with the IC as an RFID tag.

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