Radio energy receiver for receiving radio energy from radio energy transmitter is provided.The radio energy receiver includes:Electric energy receiving unit, the radio energy is received from radio energy transmitter;Rectification unit, the radio energy with alternating current form that rectification is exported from radio energy receiving unit, and export the electric energy being rectified;And electric energy adjustment unit, the input for being rectified electric energy is received, and the first electric energy with the first voltage value lower than being rectified the voltage of electric energy is exported in the first period, and electric energy is not exported in the second period, to export the electric energy with preset voltage value.