Small RFID card with integrated inductive element
First Claim
Patent Images
1. A card comprising:
- a memory card slot interface;
a memory card controller coupled to the memory card slot interface;
a contactless communications device coupled to the memory card controller, the contactless communications device having an antenna port;
a power delivery mechanism to deliver power to the contactless communications device from the memory card slot interface;
a magnetic core; and
a coil wound about the magnetic core, the coil being coupled to the antenna port of the contactless communications device.
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Abstract
A memory card compatible RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in the form factor of a memory card. Commands may be sent to the RFID card to keep the RFID card powered.
233 Citations
15 Claims
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1. A card comprising:
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a memory card slot interface; a memory card controller coupled to the memory card slot interface; a contactless communications device coupled to the memory card controller, the contactless communications device having an antenna port; a power delivery mechanism to deliver power to the contactless communications device from the memory card slot interface; a magnetic core; and a coil wound about the magnetic core, the coil being coupled to the antenna port of the contactless communications device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radio frequency identification (RFID) memory card comprising:
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a memory card controller to communicate with a host; an RFID device having an antenna port; and an inductive element coupled to the antenna port, wherein the inductive element is too small to provide sufficient energy to power the RFID device; wherein the RFID device is coupled to receive power from the host. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification