Invention Grant
- Patent Title: Near field communication device and an operating method of the near field communication device
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Application No.: US15852997Application Date: 2017-12-22
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Publication No.: US10194409B2Publication Date: 2019-01-29
- Inventor: Byeongtaek Moon , Jongpil Cho , Junho Kim , Iljong Song
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-si, Gyeonggi-Do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-si, Gyeonggi-Do
- Agency: F. Chau & Associates, LLC
- Priority: KR10-2017-0021218 20170216; KR10-2017-0037790 20170324
- Main IPC: H04W4/80
- IPC: H04W4/80 ; H04W56/00

Abstract:
A near field communication device includes an antenna, a matching circuit connected to the antenna, a clock extraction block that extracts a clock from a signal received by the antenna and outputs the extracted clock, a frequency compensation block that compensates for a frequency of the extracted clock and outputs a compensated clock, and a modulation and amplification block that performs modulation and amplification by using the compensated clock and outputs a transmit signal to the matching circuit. A first extracted clock has a first frequency that is extracted when the transmit signal is not output and a second extracted clock has a second frequency that is extracted when the transmit signal is output, the frequency compensation block compensates for the second frequency of the second extracted clock based on a difference between the first frequency of the first extracted clock and the second frequency of the second extracted clock.
Public/Granted literature
- US20180234929A1 NEAR FIELD COMMUNICATION DEVICE AND AN OPERATING METHOD OF THE NEAR FIELD COMMUNICATION DEVICE Public/Granted day:2018-08-16
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