RFID coupler for metallic implements
First Claim
Patent Images
1. A wireless RFID transponder, comprising:
- a non-metallic housing attachable directly to a metallic implement to be RFID tagged, the metallic implement being separate and discrete from the wireless RFID transponder, the metallic implement having a metallic body and an absence of an antenna;
an RFID chip within said housing, said RFID chip being mechanically connected to said housing; and
an inductive coupler within said housing and electrically connected with said RFID chip, said inductive coupler being impedance matched to the metallic implement to inductively couple with the metallic implement external and immediately adjacent to said housing and thereby effectively utilizing the metallic implement as an antenna for said RFID chip so that the RFID transponder can wirelessly communicate information with an RFID reader.
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Abstract
An RFID tagged implement assembly includes a metallic implement, and a wireless RFID transponder. The RFID transponder includes a housing; an inductive coupler within the housing, and an RFID chip coupled with the inductive coupler. The inductive coupler is inductively coupled with the metallic implement.
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Citations
21 Claims
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1. A wireless RFID transponder, comprising:
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a non-metallic housing attachable directly to a metallic implement to be RFID tagged, the metallic implement being separate and discrete from the wireless RFID transponder, the metallic implement having a metallic body and an absence of an antenna; an RFID chip within said housing, said RFID chip being mechanically connected to said housing; and an inductive coupler within said housing and electrically connected with said RFID chip, said inductive coupler being impedance matched to the metallic implement to inductively couple with the metallic implement external and immediately adjacent to said housing and thereby effectively utilizing the metallic implement as an antenna for said RFID chip so that the RFID transponder can wirelessly communicate information with an RFID reader. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An RFID tagged implement assembly, comprising:
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a metallic implement to be RFID tagged, said metallic implement having a metallic body and an absence of an antenna; and a wireless RFID transponder separate and discrete from said metallic implement, including; a non-metallic housing attached immediately adjacent to said metallic implement; an RFID chip within said housing, said RFID chip being mechanically connected to said housing; and an inductive coupler within said housing and coupled with said RFID chip, said inductive coupler inductively coupled and impedance matched with said metallic implement and thereby effectively utilizing said metallic implement as an antenna for said RFID chip so that said RFID transponder can wirelessly communicate information with an RFID reader. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification