| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless power transmission device in which a magnetic field space of a low magnetic field strength is intensively formed between power supplying module and a power receiving module and further, a magnitude or the like of the magnetic field space of the low magnetic field strength can be controlled, and a formation method of the magnetic field space.SOLUTION: A wireless power transmission device 1 supplies power through a resonance phenomenon from a power supplying module 2 including at least a power supplying resonator 22 to a power receiving module 3 including at least a power receiving resonator 32. A value of a transmission property "S21" with respect to a power supply frequency of power in the power supplying resonator 22 and the power receiving resonator 32 is set to have two peak bands. The power supply frequency of power to be supplied to the power supplying module 2 is set to a power supply frequency band corresponding to any one of the two peak bands of the transmission property "S21". Thus, in the vicinity of the power supplying resonator 22 and the power receiving resonator 32, magnetic field spaces G1 and G2 each having a magnetic field strength lower than a peripheral magnetic field strength are formed. |
