| 摘要 |
PURPOSE:To attain small size and light weight and also accurate control at high speed by supporting an El shaft with a U-form arm so as to bring the El shaft close to the antenna center shaft. CONSTITUTION:The arm 15 supporting the El shaft 2 is formed as U-form structure so as to make the fitting of the antenna 1 easy and also the weight balancing is taken easily so as to eliminate the need for the balance weight. Thus, the load to an AZ shaft 3 is relieved, a drive motor 4 is miniaturized so as to make the antenna system light. Moreover, the El shaft 2 drives the antenna 1 in excess of apex so as to attain high speed accurate control. |
