Smart NFC antenna matching network system and user device including the same

摘要

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.

主权项

1. 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 first capacitor and a second capacitor connected in series between a first end and a second end of a pattern of the source coil and the first terminal and the second terminal, respectively, to decrease impedance, wherein the resonant coil comprises a third capacitor connected in parallel between both ends of a pattern of the resonant coil to increase impedance, wherein the patterns of the source and resonant coils are printed on a film regardless of upper and lower surfaces of the film, and wherein the source and resonant coils have opposite impedance characteristics.