Near field, full duplex data link for use in static and dynamic resonant induction wireless charging
US10135496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Oct 16, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A full duplex, low latency, near field data link controls a static and/or dynamic resonant induction, wireless power transfer system used for recharging electric vehicles and other electrically powered devices. A coherent transponder configuration enables low complexity synchronous detection and positive rejection of signals originating from nearby and adjacent vehicles. A reference crystal oscillator in the ground side apparatus provides frequency synchronization for both the forward and the return data links. Transmission is by means of near field magnetic induction between pairs of loop antennas which, together with the effective waveguide below cutoff structure comprised by the vehicle underbody and the ground surface, largely restrict signal propagation to the area in the immediate vicinity of the system antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.