To suppress radio wave diffusion caused by an intercostal, relating to a dual grid reflector which is loaded on a satellite.
An antenna reflector includes a front side reflecting mirror, a rear side reflecting mirror which has an off-set angle relative to the front side reflecting mirror and is arranged at a position to which a mirror surface is translated, and an intercostal which mechanically combines the front side reflecting mirror and rear side reflecting mirror. The intercostal has a cylindrical shape. The rear side reflecting mirror is fixed to the intercostal in such a state that a side surface of the rear side reflecting mirror is in contact with one inner wall of the intercostal. The front side reflecting mirror is fixed to the intercostal, in contact with the other end of the intercostal. As stated above, the cylindrical intercostal which is larger than an electrical aperture of the rear side reflecting mirror is provided.
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka