| 摘要 |
This antenna device comprises a plurality of coil antennas (100A, 100B), each of which comprises a coil conductor wound about a winding axis, and a planar conductor (11) that has at least one edge (ES) and, in a planar view, overlaps at least parts of the coil antennas (100A, 100B). The winding axes of the coil antennas (100A, 100B) lie within the plane of the planar conductor (11) and are parallel to each other, and for each coil antenna (100A, 100B), a first end (CA1) of the core area of said coil antenna in the direction of the winding axis thereof is close to the abovementioned edge (ES). The coil antennas (100A, 100B) are connected such that the magnetic fields generated thereby are in phase. The width (W) of the planar conductor (11), the spacing (A) between the centers of the coil antennas, and the distance (B) from the center of each coil antenna to the edge of the planar conductor (11) satisfy the relation A ≤ (3/10)W. |
