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US 12,191,933 B2Granted
NFC antenna
AssigneeSTMicroelectronics Austria GmbH
InventorFrancesco Antonetti
Life of this patent
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Abstract
A near-field communication antenna includes a conductive plane; and four slots in the conductive plane.
Claims20
A near-field communication (NFC) payment terminal comprising:
- a slot antenna configured for operating in an NFC frequency range;
- a matching circuit coupled to the slot antenna;
- a controller coupled to the matching circuit;
- and
- a host circuit coupled to the controller, wherein the slot antenna comprises a rectangular conductive plane, wherein the rectangular conductive plane comprises four slots joined together in a first cross pattern, wherein one of the four slots is parallel to and is open to an edge of a narrow side of the rectangular conductive plane in a second cross pattern, and wherein the one of the four slots forms an intersecting element of the second cross pattern.
2 more elements
A method of near-field communications (NFC) of a NFC payment terminal, the method comprising:
- receiving NFC communications at the NFC payment terminal through a slotted antenna;
- processing NFC communications in the NFC payment terminal received by the slotted antenna;
- and
- transmitting the processed NFC communications at the NFC terminal through the slotted antenna,
- wherein the slotted antenna comprises a rectangular conductive plane and four slots in the rectangular conductive plane joined together in a first cross pattern, wherein one of the four slots is parallel to and open to an edge of a narrow side of the rectangular conductive plane in a second cross pattern, and wherein the one of the four slots forms an intersecting element of the second cross pattern.
2 more elements
A near-field communication (NFC) payment terminal comprising:
- a slot antenna configured for operating in an NFC frequency range, wherein the slot antenna comprises a plurality of perpendicular slots joined together in a first cross pattern, and wherein one of the plurality of perpendicular slots is parallel to and open to a bottom edge of a narrow side of a rectangular conductive plane in a second cross pattern, and wherein the one of the plurality of perpendicular slots forms an intersecting element of the second cross pattern;
- a matching circuit coupled to the slot antenna, wherein the matching circuit is configured for filtering electromagnetic interference (EMI);
- and
- a controller or router coupled to the matching circuit, wherein the controller or the router is configured for directly communicating with secure elements of the NFC payment terminal.
1 more element
Dependencies are inferred from the claim text.