SMART NFC ANTENNA MATCHING NETWORK SYSTEM HAVING MULTIPLE ANTENNAS AND USER DEVICE INCLUDING THE SAME
First Claim
1. A near field communication (NFC) antenna connected to an NFC transceiver, the NFC antenna comprising:
- a source coil connected between first and second terminals of the NFC transceiver, the source coil including one or more winding turns;
a first resonance coil physically separated from the source coil; and
a second resonance coil physically separated from the source coil, one end of the second resonance coil being connected to one end of the first resonance coil,wherein the first resonance coil is surrounded by the second resonance coil in a plan view, andwherein the source coil is between the first resonance coil and the second resonance coil in the plan view.
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Abstract
A near field communication (hereinafter, referred to as “NFC”) antenna matching network system connected to an NFC transceiver is provided. The NFC antenna matching network system includes a matching circuit connected to first and second antenna terminals and to the NFC transceiver; and a plurality of NFC antennas connected in parallel and physically with the first and second antenna terminals, wherein each of the NFC antennas comprises a source coil connected between the first antenna terminal and the second antenna terminal; and a resonance coil physically separated from the source coil.
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Citations
20 Claims
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1. A near field communication (NFC) antenna connected to an NFC transceiver, the NFC antenna comprising:
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a source coil connected between first and second terminals of the NFC transceiver, the source coil including one or more winding turns; a first resonance coil physically separated from the source coil; and a second resonance coil physically separated from the source coil, one end of the second resonance coil being connected to one end of the first resonance coil, wherein the first resonance coil is surrounded by the second resonance coil in a plan view, and wherein the source coil is between the first resonance coil and the second resonance coil in the plan view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A near field communication (NFC) antenna connected to an NFC transceiver, the NFC antenna comprising:
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a source coil connected between first and second terminals of the NFC transceiver and on a top surface of a film, the source coil including one or more winding turns; a first resonance coil physically separated from the source coil and on the top surface of the film so as to surround the source coil in a plan view; and a second resonance coil on a bottom surface of the film, wherein one end of the first resonance coil and one end of the second resonance coil are electrically connected to each other. - View Dependent Claims (13, 14, 15)
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16. A mobile device, comprising:
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an application processor, a near field communication (NFC) transceiver connected to an application processor; a matching circuit connected to the NFC transceiver; and a NFC antenna connected to the matching circuit, wherein the matching circuit is configured to match impedances of the NFC antenna and the NFC transceiver, wherein the NFC antenna includes; a source coil connected between first and second terminals of the NFC transceiver, the source coil including one or more winding turns; a first resonance coil physically separated from the source coil; and a second resonance coil physically separated from the source coil, one end of the second resonance coil being connected to one end of the first resonance coil, wherein the first resonance coil is surrounded by the second resonance coil in plan view, and wherein the source coil is between the first resonance coil and the second resonance coil in plan view. - View Dependent Claims (17, 18, 19, 20)
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Specification