| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize coexistence of a plurality of coils such as a coil for non-contact wireless communication and a coil for non-contact power transmission while saving space and inhibiting performance degradation of each coil. <P>SOLUTION: In a coil unit, a first magnetic material 11, a first coil 12 for non-contact power transmission, a second magnetic material 21, a substrate 30, and a second coil 22 for non-contact wireless communication are laminated in a layout of this order in a thickness direction of the coil. The second coil 22 is positioned at an external equipment side. The first coil 12 and the second coil 22 are disposed with at least a part of them overlapped with each other, in which the second coil 22 is overlapped with the first coil 12 at its outer peripheral side to have a region where a second coil does not overlap with the first coil on its inner peripheral side. Also, a resonance frequency of the first coil 12 is set to be lower than that of the second coil 22 and a magnetic permeability of the first magnetic material 11 is set to be higher than that of the second magnetic material 21. <P>COPYRIGHT: (C)2013,JPO&INPIT |
