Methods and apparatus for multi-frequency beamforming
US10693544B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 23, 2019 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Apr 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Multiple antennas of a beamformer may simultaneously transmit wireless signals at different frequencies. The signals may comprise synchronized, identical wireless commands, each at a different carrier frequency. The transmitted signals may constructively and destructively interfere with each other at a receiver antenna, to form a beat signal. When the transmitted signals constructively interfere, the beat signal may cause a voltage in the receiver to exceed a threshold voltage. The threshold voltage may be a minimum voltage at which a device, which is operatively connected to the receiver antenna, is able to perform energy harvesting or wireless communication. The beamformer may operate under blind channel conditions, because the transmitted frequencies may be selected in such a way as to maximize peak power delivered under all possible channel conditions. The beamformer may deliver wireless power to a sensor or actuator that is located deep inside bodily tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.