Mitsubishi Denki Kabushiki Kaisha

Izuru Naitoh

Naofumi Yoneda

Moriyasu Miyazaki

Yoshio Inasawa

Yoshihiko Konishi

Shigeru Makino

Hiroyuki Satoh

Shuji Urasaki

Akio Iida

Toshiyuki Horie

Yutaka Shimawaki

An antenna apparatus in which a combination of rectangular waveguidesandand a combination of rectangular waveguidesandare disposed bilateral symmetrically to each other, and a waveguide orthomode transduceris disposed above a waveguide orthomode transduceris provided. Therefore, the profile of the antenna apparatus can be reduced and the stability of installation of the antenna apparatus can be improved without impairing the electric characteristics of the antenna apparatus. Since the antenna apparatus has a bilateral symmetric structure, it excels in weight balance and offers stable performance from the viewpoint of mechanism.

Antenna device

For the purpose of obtaining a mechanical drive reflecting mirror antenna device which is downsized and low in attitude, enables wide-angle scanning, and is high in performance, there are provided a main reflection mirror, a sub-reflection mirror, a primary radiator, a first circular waveguidewhich is connected to the primary radiator and has a plurality of bend portions, a first circular waveguide rotary jointwhich is connected to the first circular waveguide, a second circular waveguidewhich is connected to the first circular waveguide rotary joint and has a plurality of bend portions, and a second circular waveguide rotary jointwhich is connected to the second circular waveguide and is different in a direction of a rotary axis from the first circular waveguide rotary joint by substantially 90 degrees.

Antenna device for conducting two-axial scanning of an azimuth and elevation

Growing community of inventors

Tokyo, Japan

Izuru Naitoh