Universal apparatus for wireless device charging using radio frequency (RF) energy
US9087637B2 · kind B2 · utility
2Cited by
4References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Sep 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F38/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for wireless charging using radio frequency (RF) energy includes a charger coil configured to produce RF charging energy as a magnetic field, the charger coil located proximate to a magnetic material and a metal material, the magnetic material and the metal material located to attenuate the magnetic field generated by the charger coil beyond a plane defined by a major surface of the magnetic material and the metal material, a first portion of the magnetic material underlying the charger coil and a second portion of magnetic material overlying the charger coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.