Post application editing of multiresonator chipless radio frequency identification (RFID)
First Claim
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1. A radio frequency identification (RFID) device comprising an RFID tag, the RFID tag comprising:
- a receive antenna;
a transmit antenna;
a plurality of resonators electrically coupled between the receive antenna and the transmit antenna;
a dampener configured to selectively and individually dampen resonation of each resonator of the plurality of resonators wherein, prior to dampening of the resonation of one of the resonators using the dampener, the RFID tag is configured to transmit a first response signal from the transmit antenna and, subsequent to dampening of the resonation of the resonator to be dampened using the dampener, the RFID tag is configured to transmit a second response signal that is different from the first response signal from the transmit antenna, wherein the dampener comprises a microencapsulation layer comprising a plurality of microencapsulated particles, and each microencapsulated particle comprising an outer membrane and a chemical agent encapsulated by the outer membrane;
a protective layer overlying the microencapsulation layer, wherein the protective layer provides a security overlayer that is configured to damage the microencapsulation layer when tampered with and is further configured to seal the chemical agent within the RFID tag during use; and
a registration layer on the protective layer, wherein the registration layer provides indicia regarding a physical location of each of the plurality of resonators such that the physical location of each resonator of the plurality of resonators may be individually identified and each resonator may be individually dampened.
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Abstract
A method and structure for a radio frequency identification (RFID) system including an RFID tag. The RFID tag can include a dampener configured to dampen a resonation of a resonator. Prior to dampening the resonation of the resonator using the dampener, the RFID tag may be configured to transmit a first response signal from a transmit antenna. Subsequent to dampening of the resonation of the resonator using the dampener, the RFID tag may be configured to transmit a second response signal that is different from the first response signal. The dampener may include a chemical agent or a fusible link.
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Citations
15 Claims
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1. A radio frequency identification (RFID) device comprising an RFID tag, the RFID tag comprising:
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a receive antenna; a transmit antenna; a plurality of resonators electrically coupled between the receive antenna and the transmit antenna; a dampener configured to selectively and individually dampen resonation of each resonator of the plurality of resonators wherein, prior to dampening of the resonation of one of the resonators using the dampener, the RFID tag is configured to transmit a first response signal from the transmit antenna and, subsequent to dampening of the resonation of the resonator to be dampened using the dampener, the RFID tag is configured to transmit a second response signal that is different from the first response signal from the transmit antenna, wherein the dampener comprises a microencapsulation layer comprising a plurality of microencapsulated particles, and each microencapsulated particle comprising an outer membrane and a chemical agent encapsulated by the outer membrane; a protective layer overlying the microencapsulation layer, wherein the protective layer provides a security overlayer that is configured to damage the microencapsulation layer when tampered with and is further configured to seal the chemical agent within the RFID tag during use; and a registration layer on the protective layer, wherein the registration layer provides indicia regarding a physical location of each of the plurality of resonators such that the physical location of each resonator of the plurality of resonators may be individually identified and each resonator may be individually dampened. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a radio frequency identification (RFID) system, comprising:
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transmitting an interrogation signal from an interrogator to a receive antenna of an RFID tag, wherein the RFID tag comprises a plurality or resonators; transmitting a first response signal from the RFID tag to the interrogator; subsequent to the transmitting of the first response signal, dampening a resonation of one resonator of the plurality of resonators within the RFID tag, wherein the dampening comprises; locating a position of the resonator to be dampened using a registration layer that provides indicia that identifies a physical location of each resonator of the plurality of resonators such that the physical location each resonator of the plurality of resonators may be individually identified and each resonator may be individually dampened; applying a pressure to a protective layer at the physical location of the resonator to be dampened that is identified by the indicia, wherein the indicia and the protective layer overlies a microencapsulation layer; and rupturing a plurality of microencapsulated particles and releasing a chemical agent from the plurality of microencapsulated particles onto the resonator to be dampened during the applying of the pressure to the protective layer; subsequent to the dampening of the resonation of the resonator within the RFID tag, transmitting the interrogation signal from the interrogator to the receive antenna of the RFID tag; and transmitting a second response signal from the RFID tag to the interrogator, wherein; the second response signal is different from the first response signal; the protective layer is a security overlayer that damages the microencapsulation layer when tampered with; and the protective layer further seals the chemical agent within the RFID tag subsequent to the rupturing of the plurality of microencapsulated particles. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification