| 摘要 |
An antenna device capable of performing precise positioning by using a small number of components and having a low side-lobe characteristic is provided. An antenna device includes a primary radiator (3), a main-reflector (2), a sub-reflector (5), and a holding section (4) that fixedly maintains relative positions and directions of the sub-reflector (5) and the main-reflector (2). The holding section (4) includes a side part (42) in an integrated manner, the side part (42) being configured to enclose at least a part of a radio-wave path extending from the primary radiator (3) to the sub-reflector (5) as a shroud. |
