PASSIVE SMART CARDS, METAL CARDS, PAYMENT OBJECTS AND SMART JEWELRY
First Claim
1. An RFID device comprising:
- a transponder chip module (TCM) comprising an RFID chip (IC) and a module antenna (MA);
characterized by;
a coupling frame (CF) comprising a conductive surface and having an electrical discontinuity comprising a slit (S) or non-conductive stripe (NCS) extending through the surface from an outer edge thereof to an inner position thereof, wherein the coupling frame is disposed so that the slit overlaps a portion of the module antenna.
2 Assignments
0 Petitions
Accused Products
Abstract
RFID devices comprising (i) a transponder chip module (TCM, 1410) having an RFIC chip (IC) and a module antenna (MA), and (ii) a coupling frame (CF) having an electrical discontinuity comprising a slit (S) or non-conductive stripe (NCS). The coupling frame may be disposed closely adjacent the transponder chip module so that the slit overlaps the module antenna. The RFID device may be a payment object such as a jewelry item having a metal component modified with a slit (S) to function as a coupling frame. The coupling frame may be moved (such as rotated) to position the slit to selectively overlap the module antennas (MA) of one or more transponder chip modules (TCM-1, TCM-2) disposed in the payment object, thereby selectively enhancing (including enabling) contactless communication between a given transponder chip module in the payment object and another RFID device such as an external contactless reader. The coupling frame may be tubular. A card body construction for a metal smart card is disclosed.
88 Citations
20 Claims
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1. An RFID device comprising:
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a transponder chip module (TCM) comprising an RFID chip (IC) and a module antenna (MA); characterized by; a coupling frame (CF) comprising a conductive surface and having an electrical discontinuity comprising a slit (S) or non-conductive stripe (NCS) extending through the surface from an outer edge thereof to an inner position thereof, wherein the coupling frame is disposed so that the slit overlaps a portion of the module antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of selectively enhancing or suppressing communication with a transponder chip module (TCM) comprising an RFID chip (IC) and a module antenna (MA), the method comprising:
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providing a coupling frame (CF) having an electrical discontinuity comprising a slit (S) or non-conductive strips (NCS); and moving at least one of the transponder chip module (TCM) and the coupling frame (CF) so that (i) the slit overlaps the module antenna (MA) to enhance communication; and
(ii) the slit does not overlap the module antenna to suppress communication. - View Dependent Claims (16, 17)
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18. A card body construction for a smart card (SC) comprising:
at least one metal layer having an opening for receiving a transponder chip module and a and a slit extending from the opening to an outer edge of the layer, so that the layer may function as a coupling frame. - View Dependent Claims (19, 20)
Specification