NFC device emulated in card mode comprising a digital phase locked loop, and corresponding communication method
US11190236B2 · kind B2 · utility
0Cited by
23References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Oct 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/45
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An embodiment near-field communication device using active load modulation, in card emulation mode and intended to communicate with a reader, comprises a digital phase-locked loop configured to generate a carrier signal, having an oscillator configured to generate the carrier signal in a manner controlled by an analog control signal, a feedback circuit configured to generate a digital control signal, a digital-to-analog converter configured to convert the digital control signal into the analog control signal, and an integrator assembly configured to integrate the analog control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.