Wireless power transmission apparatus and transmission method thereof

The present invention is wireless power transmission apparatus, and relates to the transmission method, the wireless power transmission device and generates a wireless power signal transmitted by the magnetic resonance method, and to receive the reflected radio power signal reflected from the wireless power receiving unit load device as after the identify the presence or absence optimized to automatically track the impedance with the output power according to a distance variation of the load device when the load device existence wireless power transmitter for transmitting the wireless power signal to the wireless power is supplied to the load device; And by including a wireless power receiver coupled to the load device and reflection to provide a load device connected to a reception by the transmitting wireless power signal to the magnetic resonance method, reflection wireless power signal to the wireless power transmission, a separate this reduces costs and transmission efficiency is improved, enabling the recognition of the receiving environment in the radio transmitter without a communication device or system.