METHOD AND DEVICE FOR IMPEDANCE MATCHING USING ISOLATED RESONATOR IN WIRELESS POWER TRANSMISSION SYSTEM
First Claim
Patent Images
1. A wireless power transmitter comprising:
- a source resonator configured to transmit wireless power by resonating with a target resonator;
a first power supply configured to supply power to the source resonator;
a first switch configured to turn ON/OFF a connection of the source resonator to the first power supply; and
a controller configured to match an impedance of the source resonator by estimating a distance between the source resonator and the target resonator.
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Abstract
A wireless power transmitter includes a source resonator configured to transmit wireless power by resonating with a target resonator, a first power supply configured to supply power to the source resonator, a first switch configured to turn ON/OFF a connection between of the source resonator to the first power supply, and a controller configured to match an impedance of the source resonator by estimating a distance between the source resonator and the target resonator.
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Citations
28 Claims
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1. A wireless power transmitter comprising:
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a source resonator configured to transmit wireless power by resonating with a target resonator; a first power supply configured to supply power to the source resonator; a first switch configured to turn ON/OFF a connection of the source resonator to the first power supply; and a controller configured to match an impedance of the source resonator by estimating a distance between the source resonator and the target resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless power receiver comprising:
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a target resonator configured to receive wireless power by resonating with a source resonator; a load configured to receive power from the target resonator; and a controller configured to match an impedance of the target resonator by estimating a distance between the source resonator and the target resonator. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A wireless power transmitter comprising:
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a source resonator configured to transmit wireless power by resonating with a target resonator in response to power supplied to the source resonator; a switch configured to interrupt the power from being supplied to the source resonator; and a controller configured to match an impedance of the source resonator based on an envelope of the wireless power transmitted by the source resonator in response to the switch interrupting the power from being supplied to the source resonator. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A wireless power receiver comprising:
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a target resonator configured to receive wireless power by resonating with a source resonator; and a controller configured to match an impedance of the target resonator based on an envelope of the wireless power received by the target resonator. - View Dependent Claims (25, 26, 27, 28)
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Specification