| CPC H02J 50/12 (2016.02) | 11 Claims |
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1. A wireless power reception apparatus comprising:
a resonant circuit comprising a first component and a second component, the first component comprising a first capacitor and a first gate connected in series, and the second component being connected in parallel with the first component and comprising a second capacitor and a second gate connected in series; and
a reception coil connected in series to the resonant circuit, and configured to wirelessly receive power at a resonant frequency determined based on a capacitance of the resonant circuit, and to output power according to the wirelessly received power, wherein current flowing through the reception coil is divided between the first and second capacitors such that the current flowing through the reception coil equals a sum of current flowing through the first capacitor and current flowing through the second capacitor,
wherein the resonant circuit is configured to determine a gate driving signal to operate the first gate and the second gate, and to transmit the power applied to at least one of the first component and the second component by inputting the gate driving signal to the first gate and the second gate, and
wherein the capacitance of the resonant circuit is determined according to the gate driving signal,
wherein the resonant circuit is configured to control the capacitance of the resonant circuit to be greater than a capacitance of the first capacitor and a capacitance of the second capacitor by inputting a delayed gate driving signal to the first gate and the second gate, wherein the delayed gate driving signal indicates a delayed signal compared to a reference gate driving signal applied to the first or second gate based on a phase of a voltage induced in the reception coil.
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