Magnetic resonance wireless power transmission device capable of adjusting resonance frequency
First Claim
1. A wireless power transmitting unit, comprising:
- a power amplifier configured to amplify a power signal using a driving frequency signal;
a resonator constituting a resonant tank, and configured to wirelessly transmit the amplified power signal through magnetic resonance using a resonant frequency of the resonant tank; and
a resonance controller configured to tune the resonant frequency of the resonator by controlling a duty ratio with a frequency signal generated by the resonator,wherein the resonance controller is configured to control a duty ratio of a switch of the resonator by changing a tuning voltage that is applied to a gate of the switch, andwherein the resonance controller is configured to control the duty ratio of the switch using the changed tuning voltage and an inductor voltage varying in a sinusoidal waveform at a source of the switch.
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Accused Products
Abstract
A magnetic resonance wireless power transmission device capable of adjusting resonance frequency is disclosed. A wireless power transmission device according to an embodiment of the present invention comprises: a power amplifier for amplifying a wireless power signal using a driving frequency signal; a resonator for configuring a resonance tank and wirelessly transmitting, through magnetic resonance, the wireless power signal output from the power amplifier using a resonance frequency of the resonance tank; and a resonance control unit for controlling a duty ratio using a frequency applied to the resonator or a frequency signal generated by the resonator and adjusting the resonance frequency of the resonator.
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Citations
7 Claims
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1. A wireless power transmitting unit, comprising:
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a power amplifier configured to amplify a power signal using a driving frequency signal; a resonator constituting a resonant tank, and configured to wirelessly transmit the amplified power signal through magnetic resonance using a resonant frequency of the resonant tank; and a resonance controller configured to tune the resonant frequency of the resonator by controlling a duty ratio with a frequency signal generated by the resonator, wherein the resonance controller is configured to control a duty ratio of a switch of the resonator by changing a tuning voltage that is applied to a gate of the switch, and wherein the resonance controller is configured to control the duty ratio of the switch using the changed tuning voltage and an inductor voltage varying in a sinusoidal waveform at a source of the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification