Sender transducer for wireless power transfer
First Claim
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1. A system, comprising:
- a signal generator;
an amplifier coupled to the signal generator, said amplifier configured to receive power from a power source and to generate an electrical transmission signal adapted to be used to generate ultrasonic waves;
a sender transducer coupled to the amplifier, the sender transducer adapted and configured to generate ultrasonic waves based on the electrical transmission signal received from the amplifier;
a sender communications device adapted to receive input, the input including a power requirement; and
a sender controller coupled to at least one of the signal generator, the amplifier and the sender transducer and adapted to change a dwell time of the sender transducer based on the received power requirement.
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Abstract
A signal generator generates an electrical signal that is sent to an amplifier, which increases the power of the signal using power from a power source. The amplified signal is fed to a sender transducer to generate ultrasonic waves that can be focused and sent to a receiver. The receiver transducer converts the ultrasonic waves back into electrical energy and stores it in an energy storage device, such as a battery, or uses the electrical energy to power a device. In this way, a device can be remotely charged or powered without having to be tethered to an electrical outlet.
93 Citations
20 Claims
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1. A system, comprising:
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a signal generator; an amplifier coupled to the signal generator, said amplifier configured to receive power from a power source and to generate an electrical transmission signal adapted to be used to generate ultrasonic waves; a sender transducer coupled to the amplifier, the sender transducer adapted and configured to generate ultrasonic waves based on the electrical transmission signal received from the amplifier; a sender communications device adapted to receive input, the input including a power requirement; and a sender controller coupled to at least one of the signal generator, the amplifier and the sender transducer and adapted to change a dwell time of the sender transducer based on the received power requirement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for emitting ultrasonic energy from a sender comprising:
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emitting ultrasonic energy at a sender, the ultrasonic energy being converted into electrical energy at a receiver; receiving a power requirement; and adjusting a dwell time of the sender on the receiver based on the power requirement. - View Dependent Claims (16, 17, 18, 19)
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20. A system comprising:
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a sender comprising; a signal generator; an amplifier coupled to the signal generator, said amplifier configured to receive power from a power source and to generate an electrical transmission signal adapted to be used to generate ultrasonic waves; a sender transducer coupled to the amplifier, the sender transducer adapted and configured to generate a beam of ultrasonic waves based on the electrical transmission signal received from the amplifier; a sender communications device adapted to receive input from a receiver communication device, the input including a power requirement; a sender controller coupled to at least one of the signal generator, the amplifier and the sender transducer and adapted to change a dwell time of the sender on the receiver based on the received power requirement; and the receiver comprising; a receiver transducer adapted and configured to receive ultrasonic waves generated by the sender transducer and to generate a receiver electrical signal based on the received ultrasonic waves; a receiver electrical storage device adapted and configured to store electrical energy based on the receiver electrical signal generated by the receiver transducer; a receiver communications device adapted and configured to send input to the sender; and a receiver controller coupled to at least one of the receiver transducer and the receiver electrical storage device.
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Specification