| 摘要 |
PROBLEM TO BE SOLVED: To obtain a wireless power transmission device capable of performing multiplex transmission of power without making a device bulky in size and small in transmission power.SOLUTION: A wireless power transmission device comprises: an electromagnetic field resonator 11 in which first to fourth resonance elements are mutually coupled by electromagnetic resonance; a transmission line 12 connecting an input/output terminal 3 and an input/output terminal 5; a transmission line 13 connecting an input/output terminal 4 and an input/output terminal 6; and a directional coupler 14 for not outputting a high frequency signal input from the input/output terminal 5 to the input/output terminal 6, but distributing the high frequency signal to input/output terminals 7, 8, and for not outputting a high frequency signal input from the input/output terminal 6 to the input/output terminal 5, but distributing the high frequency signal to the input/output terminals 7, 8. |
