METHODS AND SYSTEMS OF RFID TAGS USING RFID CIRCUITS AND ANTENNAS HAVING UNMATCHED FREQUENCY RANGES
First Claim
Patent Images
1. A radio frequency identification (RFID) tag comprising:
- a RFID circuit configured to operate with an antenna having a first range of resonant frequencies;
a tag antenna coupled to the RFID circuit, the tag antenna having a range of resonant frequencies different than the first range of resonant frequencies, the range of resonant frequencies of the tag antenna being a second range of resonant frequencies.
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Abstract
Methods and systems of RFID tags using RFID circuits and antennas having unmatched frequency ranges. At least some of the illustrative embodiments are RFID tags comprising a RFID circuit configured to operate with an antenna having a first range of resonant frequencies, a tag antenna coupled to the RFID circuit (the tag antenna having a range of resonant frequencies different than the first range of resonant frequencies, the range of resonant frequencies of the tag antenna being a second range of resonant frequencies).
113 Citations
23 Claims
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1. A radio frequency identification (RFID) tag comprising:
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a RFID circuit configured to operate with an antenna having a first range of resonant frequencies; a tag antenna coupled to the RFID circuit, the tag antenna having a range of resonant frequencies different than the first range of resonant frequencies, the range of resonant frequencies of the tag antenna being a second range of resonant frequencies. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system comprising:
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a radio frequency identification (RFID) reading system comprising; a RFID reader; and a reading antenna coupled to the RFID reader, the reading antenna configured to operate within a first band of frequencies; a RFID tag comprising; a RFID circuit configured to operate with RFID reading systems that operate in a second band of frequencies different than the first band of frequencies; a tag antenna coupled to the RFID circuit, the tag antenna configured to operate in the first band of frequencies. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
designing a radio frequency identification (RFID) tag by; selecting an RFID circuit designed to operate in a first band of frequencies; and selecting a tag antenna configured to operate in a second band of frequencies, the second band of frequencies different than the first band of frequencies. - View Dependent Claims (17, 18, 19)
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20. A radio frequency identification (RFID) tag comprising:
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a means for participating in a protocol for communications with a RFID reader means; a means for impedance matching, the means for impedance matching coupled to the means for participating; a means for broadcasting electromagnetic waves coupled to the means for impedance matching, the means for broadcasting configured for operation in a first band of frequencies; wherein the means for participating and the means for impedance matching are designed for use in systems operating in a second band of frequencies different than the first band of frequencies. - View Dependent Claims (21, 22, 23)
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Specification