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Multi-mode RFID tag architecture

  • US 7,679,514 B2
  • Filed: 10/30/2007
  • Issued: 03/16/2010
  • Est. Priority Date: 03/30/2007
  • Status: Active Grant
First Claim
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1. A multi-mode radio frequency identification (RFID) tag comprises:

  • a configurable coupling circuit that, when the multi-mode RFID tag is in a near field mode, provides electromagnetic coupling to an RFID reader and, when the multi-mode RFID tag is in a far field mode, provides radio frequency (RF) coupling to the RFID reader;

    a power generating and signal detection module coupled to the configurable coupling circuit, wherein the power generating and signal detection module converts an inbound receive signal into a supply voltage and recovers encoded data from the inbound receive signal;

    a baseband processing module coupled to;

    decode the encoded data to produce a decoded signal;

    process the decoded signal;

    when the processing of the decoded signal indicates generating a response signal, generate the response signal; and

    encode the response signal to produce outbound encoded data;

    a transmit section coupled to the configurable coupling circuit, wherein the transmit section converts the outbound encoded data into an outbound transmit signal.

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