| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device capable of supplying power in the state of being determined that a power reception device is placed in the vicinity of which one of a plurality of power supply antenna units even in the case of supplying power by using a magnetic field resonance system.SOLUTION: A power supply device 100 comprises: a power supply unit 1; power supply antenna units 3a-3d; signal superposition units 5 that are each provided between the power supply unit 1 and each of the power supply antenna units 3a-3d, and superpose a modulation signal M on power supplied from the power supply antenna units 3a-3d to a power reception device 200 or 300; and a power supply side communication unit 6 for obtaining response information corresponding to the modulation signal M from the power reception device 200 or 300.SELECTED DRAWING: Figure 1 |
