Near field communication device
US10334421B2 · kind B2 · utility
4Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Jul 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/52
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.