Wireless power transfer systems, methods and transmitters therefor
US10447089B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2017 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jan 10, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/23
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transmitter comprises a power source; a transmit resonator electrically connected to the power source via an electrically small transmission line; and a metamaterial transmission line (MMTL) electrically connected between the power source and the electrically small transmission line. The transmit resonator comprises at least two electrodes; and at least one inductive coil electrically connected to the electrodes. The transmit resonator is configured to generate an electric field when excited by the power source. The electrically small transmission line is shorter in length than a wavelength of excitation of a power signal generated by the power source. The MMTL is configured to counteract an effect of the electrically small transmission line. The MMTL has a negative phase velocity (NPV).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.