公开(公告)号：KR1020140020047A

公开(公告)日：2014-02-18

申请号：KR1020120086416

申请日：2012-08-07

Applicant: 삼성전자주식회사

Inventor： 노형환 ,  송일종 ,  윤철수

IPC: H04B5/02 ,  H04L27/00

CPC classification number: H04B5/0012 ,  G06K19/0726 ,  H04B5/0031 ,  H04B5/0056

Abstract: Disclosed are a near field communication (NFC) circuit and an operating method thereof. The NFC circuit comprises an NFC reader circuit configured to communicate with an outside through an antenna, a resonant and matching circuit connected between the NFC reader circuit and the antenna, an NFC card circuit connected between nodes positioned between the resonant and matching circuit and the antenna and configured to communicate with the outside through the antenna, and a processor configured to output a plurality of control signals when the NFC reader circuit is enabled, wherein the NFC card circuit is configured to control a resonant frequency of the antenna in response to the plurality of control signals.

Abstract translation: 公开了近场通信（NFC）电路及其操作方法。 NFC电路包括被配置为通过天线与外部通信的NFC读取器电路，连接在NFC读取器电路和天线之间的谐振和匹配电路，连接在位于谐振电路和匹配电路之间的节点与天线之间的NFC卡电路 并且被配置为通过天线与外部进行通信;以及处理器，被配置为当NFC读取器电路被使能时输出多个控制信号，其中所述NFC卡电路被配置为响应于所述多个控制信号来控制所述天线的谐振频率 的控制信号。