WIRELESS POWER TRANSFER SYSTEM BASED ON ULTRASONIC WAVE PROPAGATION

摘要

PURPOSE: A wireless power transfer system based on an ultrasonic wave is provided to wirelessly transfer power to an electronic device by using a wall or a ceiling, thereby saving the power lines of a building. CONSTITUTION: An ultrasonic wave transmitting transducer(201) generates an ultrasonic wave. The ultrasonic wave receiving transducer(203) converts the ultrasonic wave into electrical energy. A medium layer(202) is located between the ultrasonic wave transmitting transducer and the ultrasonic wave receiving transducer. An impedance matching layer(204) matches impedance to maximize the power transfer efficiency between the ultrasonic wave transmitting transducer and the ultrasonic wave receiving transducer.