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SYNTHETIC APERTURE RFID HANDHELD WITH TAG LOCATION CAPABILITY

  • US 20160363661A1
  • Filed: 08/25/2016
  • Published: 12/15/2016
  • Est. Priority Date: 03/22/2012
  • Status: Active Grant
First Claim
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1. A radio frequency identification (RFID) reader comprising:

  • a sensor configured to measure movement of the RFID reader;

    a first antenna that transmits a first radio frequency (RF) query to an RFID tag within range of the first antenna;

    a receiver that receives a response from the RFID tag at each moved position of the RFID reader in response to the first RF query; and

    a processor that;

    determines a phase for the tag response at each moved position of the RFID reader; and

    calculates a bearing for the tag using the determined phases of the RFID tag response and a location of the RFID reader.

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