公开(公告)号：US10044413B2

公开(公告)日：2018-08-07

申请号：US15269126

申请日：2016-09-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jongpil Cho ,  Junesoo Kim ,  Youngjoo Lee

IPC: G08C17/02 ,  H04B5/00 ,  G06K7/10

Abstract: A radio-frequency (RF) communication device having a near field communication (NFC) function includes a first detection mode circuit configured to output an RF input signal received by an antenna as a first RF signal while the first detection mode circuit is enabled, and a second detection mode circuit configured to amplify the RF input signal and output the amplified RF input signal as a second RF signal while the second detection mode circuit is enabled. The first detection mode circuit is enabled during a first time period, and the second detection mode circuit is enabled during a second time period. The second time period is shorter than the first time period. The first and second detection mode circuits are enabled alternately and repeatedly.