Detection of change in generated magnetic field due to tag-loading
US9264109B2 · kind B2 · utility
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1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Feb 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/77
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention concerns a Near Field Communication method comprising a step (1) of generating, by an antenna of a transmitter, a magnetic field (H), a step (2) of receiving, by an antenna of a tag, power from the generated magnetic field (H), then causing a drop in the generated magnetic field (H), wherein the method further comprises a step (3) of estimating the drop by sensing a voltage swing across said transmitter antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.