RFID tags with modifiable operating parameters
First Claim
1. A radio-frequency identification (RFID) tag comprising:
- a facestock including an RFID circuit with an operating parameter; and
a liner releasably attached to the facestock such that when the liner is detached from the facestock, the operating parameter of the RFID circuit is changed.
2 Assignments
0 Petitions
Accused Products
Abstract
A radio-frequency identification (RFID) tag includes a facestock and a liner. The facestock includes an RFID circuit with an operating parameter, and the liner is releasably attached to the facestock such that when the liner is detached from the facestock, the operating parameter of the RFID circuit is desirably modified. The RFID tag may be configured so that the operating parameter that is modified is, for example, a read range or a propagation direction. The RFID circuit may include an RFID chip and an antenna, and the liner may include an electrical element that modifies a read range of the RFID circuit when the liner is attached to the facestock. More specifically, the electrical element may electrically couple with the antenna when the liner is attached to the facestock, thereby reducing the read range of the circuit. When the liner is removed, the antenna is decoupled from the electrical element and thereby enabled to operate at another read range, i.e., a specified operating range. Alternatively, the electrical element may couple with the antenna of the RFID circuit so that energy is propagated from the element in a direction that is orthogonal to a normal direction of propagation of the antenna.
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Citations
33 Claims
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1. A radio-frequency identification (RFID) tag comprising:
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a facestock including an RFID circuit with an operating parameter; and
a liner releasably attached to the facestock such that when the liner is detached from the facestock, the operating parameter of the RFID circuit is changed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radio-frequency identification (RFID) tag comprising:
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a facestock including an RFID circuit; and
a liner releasably attached to the facestock and including an electrical element for modifying an electrical characteristic of the RFID circuit such that the RFID circuit has;
a first read range when the liner is attached to the facestock; and
a second read range when the liner is detached from the facestock. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A radio-frequency identification (RFID) tag comprising:
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a facestock including an RFID circuit with an antenna for receiving energy along a first axis; and
a liner releasably attached to the facestock and including an electrical element for modifying an electrical characteristic of the RFID circuit such that the RFID circuit is able to receive and transmit energy along;
the first axis and a second axis that is substantially orthogonal to the first axis when the liner is attached to the facestock; and
the first axis when the liner is detached from the facestock. - View Dependent Claims (27, 28)
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29. A method of fabricating an RFID tag, the method comprising:
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providing a facestock web including a facestock substrate and an adhesive layer;
providing an inlay web including an inlay substrate with an RFID inlay including a plurality of RFID circuits;
providing a liner web including a liner substrate with an electrical inlay including a plurality of electrical elements, and an adhesive layer; and
sandwiching the inlay web between the adhesive layers of the facestock and liner webs such that the electrical elements are respectively spatially juxtaposed with at least a portion of the RFID circuits. - View Dependent Claims (30, 31, 32, 33)
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Specification