Method of monitoring and controlling a level of power transmitted by an antenna of a contactless communication device
US11663435B2 · kind B2 · utility
0Cited by
1References
19Claims
0Family size
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Key dates
| Filing date | Nov 12, 2020 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Nov 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/79
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an embodiment a method for dynamic power control of a power level transmitted by an antenna of a contactless reader is disclosed. The method may include supplying a power to the antenna and performing at least one power adjusting cycle for adjusting a power level during a contactless transaction with a transponder, each power adjusting cycle including modifying the power supplied to the antenna to a predetermined level of power, performing a first measuring of a loading effect on the antenna at the predetermined level of power and adjusting the power level according to the measured loading effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.