Wireless power transmission system
First Claim
Patent Images
1. A wireless power transmitter comprising:
- a controller; and
a phased array antenna communicatively coupled to the controller, the phased array antenna having a plurality of electro-magnetic array transceivers for transmitting an electro-magnetic power transmission signal;
wherein the controller;
detects a presence of a plurality of mobile receivers including a first mobile receiver,transmits, using a first subset of the plurality of electro-magnetic array transceivers, a first electro-magnetic power transmission signal to the plurality of mobile receivers at a first frequency, wherein the first subset of the plurality of electro-magnetic array transceivers are tuned to the first frequency,receives, using the phased array antennae, a first indication of a power level of the first electro-magnetic power transmission signal from the first mobile receiver,determines a second frequency based upon the first indication of the power level,tunes a second subset of the plurality of electro-magnetic array transceivers to the second frequency,during a first period, concurrently transmits to the first mobile receiver, the first electro-magnetic power signal using the first subset at the first frequency and a second electro-magnetic power transmission signal using the second subset at the second frequency, andduring a second period that is subsequent to the first period, stops transmitting the first electro-magnetic power transmission signal after the second electro-magnetic power transmission signal is transmitted.
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Abstract
The wireless power transmission is a system for providing wireless charging and/or primary power to electronic/electrical devices via microwave energy. The microwave energy is focused to a location by a power transmitter having one or more adaptively-phased microwave array emitters. Rectennas within the device to be charged receive and rectify the microwave energy and use it for battery charging and/or for primary power.
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Citations
18 Claims
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1. A wireless power transmitter comprising:
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a controller; and a phased array antenna communicatively coupled to the controller, the phased array antenna having a plurality of electro-magnetic array transceivers for transmitting an electro-magnetic power transmission signal; wherein the controller; detects a presence of a plurality of mobile receivers including a first mobile receiver, transmits, using a first subset of the plurality of electro-magnetic array transceivers, a first electro-magnetic power transmission signal to the plurality of mobile receivers at a first frequency, wherein the first subset of the plurality of electro-magnetic array transceivers are tuned to the first frequency, receives, using the phased array antennae, a first indication of a power level of the first electro-magnetic power transmission signal from the first mobile receiver, determines a second frequency based upon the first indication of the power level, tunes a second subset of the plurality of electro-magnetic array transceivers to the second frequency, during a first period, concurrently transmits to the first mobile receiver, the first electro-magnetic power signal using the first subset at the first frequency and a second electro-magnetic power transmission signal using the second subset at the second frequency, and during a second period that is subsequent to the first period, stops transmitting the first electro-magnetic power transmission signal after the second electro-magnetic power transmission signal is transmitted. - View Dependent Claims (2, 3, 4, 16)
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5. A wireless power receiver comprising:
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a rectifier that concurrently receives electro-magnetic power transmission signals from a wireless power transmitter that are transmitted at a first frequency and a second frequency and feed a received electro-magnetic power transmission signals to a power meter; wherein the power meter measures a power signal strength indication of the received electro-magnetic power transmission signals and provide a control logic with the power signal strength indication; wherein the control logic receives the power signal strength indication and transmits the power signal strength indication to the wireless power transmitter; and wherein the wireless power transmitter; detects a presence of a plurality of wireless power receivers including the wireless power receiver, transmits a first electro-magnetic power transmission signal to the wireless power receiver at the first frequency using a first subset of a plurality of electro-magnetic array transceivers, receives the indication of a power level from the wireless power receiver, determines the second frequency based upon the indication of the power level, tunes a second subset of the plurality of electro-magnetic array transceivers to the second frequency, during a first period, concurrently transmits to the receiver, the first electro-magnetic power transmission signal using the first subset and a second electro-magnetic power transmission signal using the second subset, and during a second period subsequent to the first period, stops transmitting the first electro-magnetic power transmission signal to the receiver after the second electro-magnetic power transmission signal is transmitted. - View Dependent Claims (6, 7, 8, 9, 17)
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10. A method for receiving power and data communication wirelessly from a wireless power transmitter comprising:
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detecting, by the wireless power transmitter, a presence of a plurality of mobile receivers including a first mobile receiver; transmitting, by the wireless power transmitter, a first electro-magnetic power transmission signal to the plurality of mobile receivers at a first frequency using a first subset of a plurality of electro-magnetic array transceivers; receiving, by the wireless power transmitter, a first indication of a power level of the first electro-magnetic power transmission signal from the first mobile receiver; determining, by the wireless power transmitter, a second frequency based upon the first indication of the power level; tuning, by the wireless power transmitter, a second subset of the plurality of electro-magnetic array transceivers to the second frequency; during a first period, concurrently transmitting, by the wireless power transmitter, to the first mobile receiver the first electro-magnetic power transmission signal using the first subset and a second electro-magnetic power transmission signal using the second subset; receiving, by the wireless power transmitter, a second indication of a power level of the first electro-magnetic power transmission signal from a second mobile receiver; and during a second period subsequent to the first period, stopping, by the wireless power transmitter, the transmission of the first electro-magnetic power transmission signal to the first mobile receiver after the second electro-magnetic power transmission signal is transmitted. - View Dependent Claims (11, 12, 13, 14, 15, 18)
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Specification