| 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 a first edge (ES1) and a second edge (ES2) with a corner (CO) or a curved section therebetween. One end of the core of one of the coil antennas, namely a first coil antenna (100A), overlaps the planar conductor (11) in a planar view and is positioned along the first edge (ES1) of the planar conductor (11) near the aforementioned corner (CO) or curved section. One end of the core of the other coil antenna, namely a second coil antenna (100B), overlaps the planar conductor (11) in a planar view and is positioned along the second edge (ES2) of the planar conductor (11). The coil antennas are connected such that the magnetic flux produced by the first coil antenna (100A) and the magnetic flux produced by the second coil antenna (100B) are in phase in an inside-outside direction, the boundary for which consists of the first edge (ES1) and the second edge (ES2) of the planar conductor (11). |
