| 摘要 |
A multi-frequency antenna includes a ground conductor portion (3), a first radiation conductor portion (1) serving as a first radiation element facing the ground conductor portion keeping a predetermined distance therefrom, a short circuit portion (2) connecting an end portion of the first radiation conductor portion and the ground conductor portion, and a planar shaped second radiation conductor portion (5, 6) serving as a second radiation element and having a frequency characteristic different from the first radiation element, the second radiation conductor portion having a first end connected to the first radiation conductor portion and a second end connected to a feeding means (11). |
