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RFID verifier system with grade classification

  • US 20060068701A1
  • Filed: 09/27/2004
  • Published: 03/30/2006
  • Est. Priority Date: 09/27/2004
  • Status: Active Grant
First Claim
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1. An RFID verifier, comprising:

  • a transceiver operable to interrogate with an interrogating signal an RFID tag and to receive a resulting backscattered signal from the interrogated RFID tag;

    a transmit signal strength indicator operable to measure the interrogating signal power;

    a received signal strength indicator operable to measure the signal power from the interrogated RFID tag; and

    a processor operable to compare the measured interrogating signal power and RFID tag signal power to obtain an measure of quality for the interrogated RFID tag, the processor being configured to classify the measure of quality with reference to a predetermined absolute measure of quality.

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