F. Chau & Associates, LLC
Near field communication device and an operating method of the near field communication device
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.
SAMSUNG ELECTRONICS CO., LTD.
G H H H H H
G06K H04B H04B H04W H04B H04W
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Byeongtaek Iljong Jongpil Junho
Moon Song Cho Kim