The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2019
Filed:
Mar. 14, 2017
Applicant:
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Inventors:
Jongpil Cho, Hwaseong-si, KR;
Youngjoo Lee, Yongin-si, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 4/80 (2018.01); H04L 7/033 (2006.01); H04W 52/52 (2009.01); G06K 7/10 (2006.01); H04B 5/00 (2006.01); H04B 5/02 (2006.01);
U.S. Cl.
CPC ...
H04W 4/80 (2018.02); G06K 7/10237 (2013.01); H04B 5/0031 (2013.01); H04B 5/0075 (2013.01); H04B 5/02 (2013.01); H04L 7/033 (2013.01); H04W 52/52 (2013.01);
Abstract
Disclosed is a near field communication device which includes an antenna, a transmission amplifier, a matching circuit connected between the antenna and the transmission amplifier, and a transmitter. The transmitter transmits a transmit clock to the matching circuit through the transmission amplifier, extracts an extraction clock from a waveform formed in the matching circuit, stores a phase difference between the transmit clock and the extraction clock, and controls transmission of an information signal through the antenna, the transmission amplifier, and the matching circuit based on the phase difference.