MULTI-MODE RFID TAG ARCHITECTURE
First Claim
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1. A transceiver, comprises:
- a circuit operable to format an outbound signal in a near field mode and in an RF mode, wherein the circuit is configured to format the outbound signal using a first protocol when in the near field mode and format the outbound signal using a second protocol when in the RF mode; and
a transmitter operable to generate an outbound transmit signal and transmit the outbound transmit signal at a first frequency in the near field mode and at a second frequency in the RF mode.
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Abstract
A multi-mode RFID tag includes a power generating and signal detection module, a baseband processing module, a transmit section, a configurable coupling circuit, and an antenna section. In near field mode, the configurable coupling circuit is operable to couple the transmit section to a coil or inductor in the configurable coupling circuit to transmit an outbound transmit signal using electromagnetic or inductive coupling to an RFID reader. In far field mode, the configurable coupling circuit is operable to couple the transmit section to the antenna section, and the multi-mode RFID tag then utilizes a back-scattering RF technology to transmit the outbound transmit signal to RFID readers.
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Citations
20 Claims
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1. A transceiver, comprises:
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a circuit operable to format an outbound signal in a near field mode and in an RF mode, wherein the circuit is configured to format the outbound signal using a first protocol when in the near field mode and format the outbound signal using a second protocol when in the RF mode; and a transmitter operable to generate an outbound transmit signal and transmit the outbound transmit signal at a first frequency in the near field mode and at a second frequency in the RF mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radio frequency identification (RFID) device, comprises:
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a transceiver operable to receive an inbound receive signal in a near field mode and an RF mode; at least one circuit configured to decode the inbound receive signal using a first protocol when in the near field mode and decode the inbound receive signal using a second protocol when in the RF mode. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A transceiver, comprises:
a circuit operable to encode an outbound signal in a near field mode and in an RF mode, wherein the circuit is configured to format the outbound signal using a first data encoding protocol in a near field mode and a second data encoding protocol in an RF mode. - View Dependent Claims (16, 17, 18, 19, 20)
Specification