Phase compensation in an NFC system
US10237000B1 · kind B1 · utility
5Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2018 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | May 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/3278
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for compensating phase shift is provided. The method includes sweeping a transmitter (TX) clock frequency over a frequency range and sampling resistance values at a receiver (RX) circuit while sweeping the TX clock frequency. A first frequency in the frequency range is determined which corresponds to a maximum resistance value sampled at the RX circuit. Using a look-up table (LUT), a phase adjust value is determined based on the first frequency. A phase of the TX clock is adjusted based on the phase adjust value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.