Resonant loop or antenna for wireless power transfer and secure communication
US11456536B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2019 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Mar 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/79
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A resonant antenna for long-range wireless power transfer and communications. The antenna may be powered by a source at a frequency that is resonant for the antenna or harmonic(s) of the resonant frequency. The loop or antenna may be a wire laid out in a physically large network or constitute wiring of a building or other place. The antenna may be placed in a high index material, which results in the antenna to be a physically smaller size for the same electrical size. The antenna may be driven with an electrical power signal. Power may be picked up by another or secondary antenna from the source antenna at the resonant frequency or harmonic(s). Communications may also occur between the antennas. Because of a near-field effect, emanation of electromagnetic fields is primarily limited extensively to just between the antennas. A little stray electromagnetic field exists that others cannot easily intercept.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.