Patent ID: 7679514

Claim:
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.