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RFID BEAM FORMING SYSTEM

  • US 20080012710A1
  • Filed: 06/28/2007
  • Published: 01/17/2008
  • Est. Priority Date: 07/11/2006
  • Status: Active Grant
First Claim
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1. A method for deriving information from an RFID tag, comprising:

  • transmitting RFID tag interrogation signals from an array of antenna elements to an RFID tag;

    processing signals received by each of the antenna elements from the RFID tag to alter relative phase between them; and

    deriving information from the RFID tag from a combination of the processed received signals.

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