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US 11,962,166 B2Granted
Distributed wireless power transmission system
AssigneeOssia Inc.
InventorsHatem I. Zeine, Philip L. Swan
Life of this patent
Estimating the term…
Abstract
The embodiments described herein comprise a distributed wireless power transmission system including a plurality of wireless power transmission systems (WPTSs) coordinating transmissions to create a virtual WPTS. The plurality of WPTS coordinate amongst each other to compensate for local phase shift differences between respective clock sources so that transmissions from the WPTSs constructively interfere at a wireless power receiver client (WPRC).
Claims20
A method performed by a first wireless power transmission system (WPTS), the method comprising:
- transmitting a beacon from one or more calibration antennas of the first WPTS;
- receiving the beacon at a reference antenna of the first WPTS;
- receiving an indication of a phase of the beacon detected at a second WPTS;
- receiving, at the one or more calibration antennas, a first sum transmission, wherein the first sum transmission is a sum of a first test transmission from the second WPTS concurrently received with a first transmission from the reference antenna of the first WPTS;
- receiving, at the one or more calibration antennas, a second sum transmission, wherein the second sum transmission is a sum of a second test transmission from the second WPTS concurrently received with a second transmission from the reference antenna of the first WPTS, wherein the first test transmission and the second test transmission have different phases;
- selecting a calibration phase shift associated with the first sum transmission, wherein the first sum transmission has a larger peak received power than the second sum transmission;
- sending an indication of the calibration phase shift to the second WPTS;
- and
- directionally transmitting first wireless power transmissions to a wireless power receive client (WPRC).
6 more elements
A first wireless power transmission system (WPTS), the first WPTS comprising:
- a transceiver;
- a plurality of antennas including one or more calibration antennas and a reference antenna;
- the transceiver configured to transmit a beacon via the one or more calibration antennas;
- the transceiver further configured to receive the beacon via the reference antenna;
- the transceiver further configured to receive, via one or more antennas of the plurality of antennas, an indication of a phase of the beacon detected at a second WPTS;
- the transceiver further configured to receive, via the one or more calibration antennas, a first sum transmission, wherein the first sum transmission is a sum of a first test transmission from the second WPTS concurrently received with a first transmission from the reference antenna of the first WPTS;
- the transceiver further configured to receive, via the one or more calibration antennas, a second sum transmission, wherein the second sum transmission is a sum of a second test transmission from the second WPTS concurrently received with a second transmission from the reference antenna of the first WPTS, wherein the first test transmission and the second test transmission have different phases;
- a processor configured to select a calibration phase shift associated with the first sum transmission, wherein the first sum transmission has a larger peak received power than the second sum transmission;
- the transceiver further configured to send, via at least one antenna, an indication of the calibration phase shift to the second WPTS;
- and
- the transceiver further configured to directionally transmit, via at least some of the plurality of antennas, first wireless power transmissions to a wireless power receive client (WPRC).
8 more elements
Dependencies are inferred from the claim text.