Extending the distance range of near-field wireless power delivery
US10135257B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method for wireless resonant power transfer is disclosed. The system may include a transmitter that, in addition to being configured for resonantly coupling power into an oscillating electric and/or magnetic field, is also configured to transmit one or more test signals. Test signals can include single frequency continuous wave test signals, frequency sweep test signals, and time-pulsed modulated test signals. By comparing measurements of phase and amplitude of both the transmitted test signal and one or more reflections of the test signal reflected by one or more reflecting entities, electromagnetic properties of the one or more reflecting entities may be determined. The determined properties may then be used to enhance the efficiency and/or effectiveness of power transfer, and/or to distinguish between legitimate and illegitimate consumption of wirelessly transferred power by devices in the oscillating field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.