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US 2014/0154980 A1Published application
Smart nfc antenna matching network system and user device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsYohan JANG, Iljong Song, Hyounghwan Roh
Life of this patent
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Abstract
A Near Field Communication (NFC) antenna matching network system is provided for connection with an NFC. The NFC antenna matching network system includes a source coil connected between a first terminal and a second terminal of the NFC transceiver; and a resonant coil physically separated from the source coil.
Claims34
1-35. (canceled)
A Near Field Communication (NFC) antenna matching network system that is connected with an NFC transceiver, the NFC antenna matching network system comprising:
- a source coil connected between a first terminal and a second terminal of the NFC transceiver;
- and
- a resonant coil physically separated from the source coil,
- wherein the source coil comprises a capacitor connected in series between both ends of a pattern of the source coil to decrease impedance,
- wherein the resonance coil comprises a capacitor connected in parallel between both ends of a pattern of the resonance coil to increase impedance,
- wherein the patterns of the source and resonance coils are printed on a film regardless of upper and lower surfaces of the film, and
- wherein the source and resonance coils have opposite impedance characteristics.
4 more elements
A user device, comprising:
- a Near Field Communication (NFC) transceiver;
- and
- an NFC antenna matching network system,
- wherein the NFC transceiver includes:
- a first terminal;
- a second terminal;
- and
- a reader that is connected to the first terminal and the second terminal,
- wherein the NFC antenna matching network system includes:
- a first capacitor having a first end connected with the first terminal;
- a second capacitor having a first end connected with the second terminal;
- a source coil having connected between a second end of the first capacitor and a second end of the second capacitor;
- and
- a parallel resonator physically separated from the source coil.
11 more elements
A user device, comprising:
- a Near Field Communication (NFC) transceiver;
- and
- an NFC antenna matching network system,
- wherein the NFC transceiver includes:
- a first terminal;
- a second terminal;
- a reader that is connected with the first terminal and the second terminal;
- and
- a card circuit that is connected with the first terminal and the second terminal, and
- wherein the NFC antenna matching network system includes:
- a first capacitor having a first end connected with the first terminal;
- a second capacitor having a first end connected with the second terminal;
- a source coil connected between a second end of the first capacitor and a second end of the second capacitor;
- and
- a parallel resonator physically separated from the source coil,
- wherein the parallel resonator includes:
- a resonant coil;
- and
- a third capacitor connected between a first end and a second end of the resonant coil.
16 more elements
A user device, comprising:
- a Near Field Communication (NFC) transceiver;
- and
- an NFC antenna matching network system,
- wherein the NFC transceiver includes:
- a first terminal;
- a second terminal;
- a third terminal;
- a fourth terminal;
- a reader connected with the first terminal and the second terminal;
- and
- a card circuit connected with the third terminal and the fourth terminal, and
- wherein the NFC antenna matching network system includes:
- a first capacitor having a first end connected with the first terminal and the third terminal;
- a second capacitor having a first end connected with the second terminal and the fourth terminal;
- a source coil connected between a second end of the first capacitor and a second end of the second capacitor;
- and
- a parallel resonator physically separated from the source coil,
- wherein the parallel resonator includes:
- a resonant coil;
- and
- a third capacitor connected between a first end and a second end of the resonant coil.
18 more elements
A user device, comprising:
- a Near Field Communication (NFC) transceiver;
- and
- an NFC antenna matching network system,
- wherein the NFC transceiver includes:
- a first terminal;
- a second terminal;
- a third terminal;
- a fourth terminal;
- a fifth terminal;
- a reader connected with the first terminal, the second terminal, and the third terminal;
- and
- a card circuit connected with the fourth terminal and the fifth terminal;
- and
- wherein the NFC antenna matching network system includes:
- a first capacitor having a first end connected with the first terminal and the fourth terminal;
- a second capacitor having a first end connected with the second terminal and the fifth terminal;
- a source coil having a first end connected with a second end of the first capacitor, and having a second end connected with a second end of the second capacitor and the third terminal;
- and
- a parallel resonator physically separated from the source coil,
- wherein the parallel resonator includes:
- a resonant coil;
- and
- a third capacitor connected between a first end and a second end of the resonant coil.
20 more elements
Dependencies are inferred from the claim text.