| CPC H02J 50/005 (2020.01) [H02J 50/12 (2016.02); H02J 50/402 (2020.01); H03H 7/38 (2013.01)] | 20 Claims |
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1. A wireless power transmitter comprising:
a housing;
a power amplifier disposed inside the housing;
a first resonator including at least one coil and connected to a first portion of the housing;
a second resonator including at least one coil, disposed at a second portion of the housing, and rotatable with respect to the first resonator;
a matching circuit including at least one coil and at least one capacitor, and electrically coupled between the power amplifier and the first resonator;
a sensor; and
a controller, comprising processing circuitry, configured to:
identify information related to an angle between the first resonator and the second resonator based on a signal received from the sensor,
identify whether impedance is matched such that a first impedance at an output node of the matching circuit is matched to a second impedance at an input node of the first resonator and/or the second resonator,
based on identifying that the impedance is not matched:
generate a control signal for impedance matching based on the information, and
control the matching circuit to adjust impedance of the matching circuit based on the control signal.
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