Large area power transmitter for wireless power transfer
US10950383B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2018 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Feb 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for wireless power transfer. The method includes adapting a variable form factor transmitter into at least a plurality of cross-coupled segments disposed about a pre-determined wireless power transfer area, wherein the pre-determined wireless power transfer area comprises a dimension exceeding a wavelength corresponding to a characteristic frequency of the variable form factor transmitter, transmitting, from a radio frequency (RF) power source and based at least in part on the characteristic frequency, RF power across the pre-determined wireless power transfer area via a near electromagnetic field of the variable form factor transmitter, and reducing, based on opposing directions of magnetic fields induced by adjacent cross-coupled segments of the plurality of cross-coupled segments, a radiation loss of the wireless power transfer due to a far electromagnetic field of the variable form factor transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.