| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio power transmitter capable of significantly reducing deterioration in transmission efficiency even when changing a rotation angle of a direction of a reception side resonator.SOLUTION: A radio power transmitter 1 comprises: two power transmission side resonators 2x and 2y; a reception side resonator 3 which is smaller than the power transmission side resonators 2x and 2y and is movable; and a high frequency power supply 4. One power transmission side resonator 2x is excited by an output signal of the high frequency power supply 4, and another power transmission side resonator 2y is excited not by the high frequency power supply but by an electromagnetic field generated by the one power transmission side resonator 2x, which generates at least two natural resonance frequencies slightly differing from each other. Power is transmitted to the reception side resonator 3 by making the reception side resonator 3 resonate at the at least two natural resonance frequencies. |
