| 摘要 |
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 suppressing performance degradation of each coil.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 and disposed in this order in a thickness direction of the coils. The second coil 22 is positioned at an external apparatus side. The first coil 12 and the second coil 22 are disposed with at least a part of them overlapped with each other, so that the second coil 22 is overlapped with the first coil 12 at an outer peripheral side of the first coil 12 so as to have a region where the second coil does not overlap with the first coil on an inner peripheral side of the first coil. Also, a resonance frequency of the first coil 12 is set to be lower than that of the second coil 22 and magnetic permeability of the first magnetic material 11 is set to be higher than that of the second magnetic material 21. |
