| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device capable of changing polarization with a simple structure, and capable of suppressing antenna gain reduction.SOLUTION: The antenna device includes: a radiation element of a rectangular shape, having a feeding point on a diagonal line; and a short-circuit/open point disposed at a position in which a potential level of the radiation element is regarded to be a ground level. A short-circuit/open part electrically connects or disconnects the short-circuit/open point to/from the ground. |
