Mixed analog front-end for wireless charging
US11936211B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 2022 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | May 4, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, methods and apparatus for wireless charging are disclosed. An apparatus includes or operates as a wireless charging device that has a battery charging power source coupled to a charging circuit, a plurality of charging cells provided on a surface of the wireless charging device and a controller or processing circuit, which may include one or more processors. The apparatus has a high-pass filter configured to extract high-frequency components from a measurement signal representative of voltage at a transmitting coil during a charging operation, a first attenuator configured to attenuate the measurement signal and provide an attenuated measurement signal, a mixer configured to add a signal representative of the high-frequency components to the attenuated measurement signal to obtain a scaled measurement signal, and a demodulator configured to decode one or more messages associated with the charging operation from the scaled measurement signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.