Radio frequency identification tag having an inductively coupled antenna
First Claim
Patent Images
1. An RFID tag comprising:
- a radiating element including a radiating element coil; and
an integrated circuit chip having a coil coupled to the integrated circuitry;
wherein the integrated circuit chip inductively couples to radiating element coil via the circuit chip coil.
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Abstract
An RFID tag which couples a radiating element or antenna to an integrated circuit without a physical conductor. The radiating element comprises a coil. The integrated circuit is affixed to the substrate having the antenna in such a way that the circuit chip coil is inductively coupled to the antenna coil. When the RFID tag is excited via the antenna, the inductive coupling causes both signaling and power to couple from the antenna to the circuit chip coil without a physical conductor connecting the antenna to the RFID tag integrated circuit.
45 Citations
14 Claims
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1. An RFID tag comprising:
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a radiating element including a radiating element coil; and
an integrated circuit chip having a coil coupled to the integrated circuitry;
wherein the integrated circuit chip inductively couples to radiating element coil via the circuit chip coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
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12. A method for exciting an RFID tag comprising the steps of:
delivering excitation energy to a radiating element of the RFID tag and inductively coupling the energy from the radiating element to an RFID tag integrated circuit.
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14. A method for fabricating an RFID tag comprising the steps of:
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disposing an antenna on a carrier, the antenna including a coil;
mounting an integrated circuit having an integrated circuit coil to the carrier such that the antenna coil and integrated circuit coil can inductively couple at least an excitation signal via the antenna coil.
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Specification