Multi-mode RFID tag architecture
First Claim
1. A radio frequency (RF) device, comprises:
- a transmit section operable for generating an outbound transmit signal in a near field frequency band and a far field frequency band, wherein the transmit section is operable to encode the outbound transmit signal using a first protocol for transmission in the near field frequency band and encode the outbound signal using a second protocol for transmission in the far field frequency band.
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Accused Products
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 radio frequency (RF) device, comprises:
a transmit section operable for generating an outbound transmit signal in a near field frequency band and a far field frequency band, wherein the transmit section is operable to encode the outbound transmit signal using a first protocol for transmission in the near field frequency band and encode the outbound signal using a second protocol for transmission in the far field frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio frequency identification (RFID) tag, comprises:
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a transmit section operable for generating an outbound transmit signal using a first protocol when operating in a near field mode and for generating an outbound transmit signal using a second protocol when operating in a far field mode; a first circuit operable for transmitting the outbound transmit signal in the near field mode; and a second circuit operable for transmitting the outbound transmit signal in the far field mode. - View Dependent Claims (14, 15, 16, 17)
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18. A method operable by an RF device, comprising:
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generating an outbound transmit signal using a first encoding protocol and transmitting the outbound transmit signal in a near field mode; and generating the outbound transmit signal using a second encoding protocol and transmitting the outbound transmit signal in a far field mode. - View Dependent Claims (19, 20)
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Specification