| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device in which the flux density can be increased in a direction inclining against the winding axis of a coil antenna.SOLUTION: An antenna device 8 includes an element 40B having a magnetic material layer 46, and first and second coil antennas 10A, 20A. Each coil conductor of the first and second coil antennas 10A, 20A is formed at least in the element 40B or on the surface thereof. The first coil antennas 10A has a winding axis crossing at least one side face of the element 40B, and includes a part of the magnetic material layer 46 therein. The second coil antennas 20A has a winding axis crossing first and second principal surfaces 41, 42 of the element 40B. In the plan view from the direction of the winding axis of the second coil antennas 20A, the second coil antennas 20A overlaps the magnetic material layer 46. |
