WIRELESS POWER TRANSMISSION DEVICE WITH A TUNABLE IMPEDANCE MATCHING CIRCUIT

摘要

PURPOSE: A wireless power transmission device with a tunable impedance matching circuit is provided to reduce power consumption by using low frequency magnetic inductive method. CONSTITUTION: In a wireless power transmission device with a tunable impedance matching circuit, a transmission loop resonator uses a magnetic inductive method. The transmission loop resonator wirelessly transfers an AC voltage. A receiving loop resonator wirelessly receives the AC voltage induced from the transmission loop resonator. Varactor diodes(20,250) match the impedance. DC bias power supply units(80,85) applies the DC bias voltage to the varactor diode.