Device detection using harmonics
US10218413B2 · kind B2 · utility
0Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2017 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jul 31, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/73
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Wireless power is provided to a WPP-compliant wireless device by generating a first radio frequency (RF) signal at a first frequency. The transmitter circuit is inductively coupled to the compliant wireless device using the first RF signal. A second RF signal is generated at a second frequency. The presence of a WPP-noncompliant wireless device is detected by detecting a third RF signal at a third frequency that is a harmonic of the second frequency. The non-compliant wireless device is protected by reducing, in response to detecting the third RF signal, a signal strength for the first RF signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.