| 摘要 |
In an antenna device having a coil element 11 composed of metallic wire that is connected to a power feeding point by causing one end portion to be coupled to a caulking portion 13-1 of a power feeding plate 13 connected to the power feeding point on a circuit board 1, a plate element section 13-2 is constructed using a part of the power feeding plate 13 when an antenna element whose element length is different from that of the coil element 11 is added. This makes it possible to obtain the antenna device that can achieve a wider bandwidth while restraining the number of parts and a cost from being increased. |
