Power amplifier based wireless power transfer and communications
US11152818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Jul 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/2639
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device operative to transfer power wirelessly includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s). The DSC generates a drive signal based on a reference signal and provides the drive signal to a first coil via a single line and via a resonating capacitor, and simultaneously senses the drive signal via the single line, to facilitate electromagnetic coupling to a second coil to transfer power wirelessly to another device. The DSC also detects electrical characteristic(s) of the drive signal. The processing module(s) generates the reference signal and processes the digital signal to determine the electrical characteristic(s) of the drive signal. In some examples, the processing module(s) adapts the reference signal based on detection of the other device (e.g., based on interpreting the electrical characteristic(s) of the drive signal).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.