Techniques for determining distance between radiating objects in multipath wireless power delivery environments
US11081907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Dec 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Techniques are described herein for determining the distance from, to or between radiating objects in a multipath environment. For example, embodiments of the present disclosure describe techniques for determining the distance between an antenna array system (or wireless charger) and a wireless power receiver in a multipath wireless power delivery environment. Calibration techniques are disclosed that account for and/or otherwise quantify the multipath effects of the wireless power delivery environment. In some embodiment, the quantified multipath effects modify the Friis transmission equation, thereby facilitating the distance determination in multipath environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.