RFID devices using RFID circuits and antennas having unmatched frequency ranges
First Claim
Patent Images
1. A radio frequency identification (RFID) system comprising:
- an RFID interrogator having interrogator antennas, each interrogator antenna tuned to different respective frequency ranges;
an RFID device having an RFID circuit; and
device antennas coupled to the RFID circuit, each device antenna tuned to a respective frequency range matching one of the interrogator antennas, for communicating with the RFID interrogator according to respective protocols associated with each respective frequency range.
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Abstract
An RFID system in which RFID devices utilize RFID circuits and antennas having unmatched frequency ranges. The system includes an RFID interrogator having multiple interrogator antennas. Each interrogator antenna can be tuned to different respective frequency ranges. The system includes an RFID device having an RFID circuit, and device antennas coupled to the RFID circuit. Each device antenna can be tuned to a respective frequency range that matches only one of the interrogator antennas for communicating with the RFID interrogator according to respective protocols associated with each respective frequency range.
125 Citations
23 Claims
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1. A radio frequency identification (RFID) system comprising:
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an RFID interrogator having interrogator antennas, each interrogator antenna tuned to different respective frequency ranges; an RFID device having an RFID circuit; and device antennas coupled to the RFID circuit, each device antenna tuned to a respective frequency range matching one of the interrogator antennas, for communicating with the RFID interrogator according to respective protocols associated with each respective frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radio frequency identification (RFID) device comprising:
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an RFID circuit; and antennas coupled to the RFID circuit, each antenna tuned to a separate respective frequency ranges for communicating with at least one RFID interrogator according to respective protocols associated with each respective frequency range. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A radio frequency identification (RFID) interrogator comprising:
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a first antenna tuned to a first frequency range for communicating with an RFID device according to a first protocol associated with the first frequency range; and a second antenna tuned to a second frequency range for communicating with the RFID device according to a second protocol associated with the second frequency range. - View Dependent Claims (21, 22)
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23. A method comprising:
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receiving radio frequency (RF) signals having different frequency ranges on separate antennas tuned to the different frequency ranges; selecting protocols, each protocol associated with one of the separate frequency ranges of the received signals; processing the received signals according to the protocols associated with the frequency ranges; and communicating with an RFID interrogator over each frequency range according to the protocols associated with the respective frequency range.
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Specification