Wireless energy transfer in a far-field environment
US10374470B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2018 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Aug 31, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/029
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An antenna system can be controlled to wirelessly transmit power to a mobile device in a far-field environment by using different types of metamaterials to shape and constrain the beam of power, controlling the antenna based on a predicted position of the mobile device, or both of these. The mobile device can use the power to charge a power source associated with the mobile device. The predicted position of the mobile device can be determined using position information, motion and direction information, and height information about the mobile device. The position of the antenna can be controlled so that the power is wirelessly transmitted to the mobile device in the Fresnel zone of the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.