Patent ID: 9673867
Date: 2017-06-06
CPC Classifications: H04B

Claim:
1. A power transmission device comprising: an antenna; a directional coupler; a power amplifier unit; a power adjustment unit; a control circuit; a modulation circuit; and a demodulation circuit, wherein: the antenna is configured to receive a reflected power from a power receiving device, the directional coupler is electrically connected to the antenna and the power amplifier unit, the power amplifier unit is electrically connected to an AC power and is configured to amplify a value of the AC power, the power adjustment unit is electrically connected to the directional coupler and is configured to lower the reflected power, the control circuit is electrically connected to the power adjustment unit, the modulation circuit, the demodulation circuit, and the power amplifier unit, and configured to generate a transmission signal to be transmitted to the power receiving device, process a response signal included in the reflected power from the power receiving device, the modulation circuit is electrically connected to the power amplifier unit and configured to convert the transmission signal into a signal with which wireless communication is possible, the demodulation circuit is electrically connected to the power adjustment unit and configured to converting the response signal into a signal that is processed by the control circuit.