| 摘要 |
PURPOSE:To simplify the driving device of an antenna sustem so as to reduce the wieght of the antenna by fixing the parabolic mirror of the antenna by setting the azimuth and elevation angle of the mirror with the simple driving device and making fine adjustment through the displacement of a primary radiator. CONSTITUTION:The direction of elevation angle of a parabolic mirror is fixed by selecting fitting screws 14b-14d of the change-over fitting 12 of the direction for every area and the direction of azimuth is fixed by means of an azimuth rotating mechanism 14 manufactured with low accuracy. Moreover, fine tracking in the direction of elevation angle is made possible by making the starting point of a stay 16 in the symmetric plane to have a hinged structure and the length of another stay 17 in the asymmetric plane variable. In addition to the above, a mechanism which displaces primary radiating systems 1, 18, and 19 in the direction perpendicular to the surface of this paper is provided so as to make the fine tracking in the direction of azimuth. As a result, an antenna driving device necessary for tracking an artificial satellite is simplified and the weight of the antenna can be reduced. |
