| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an automatic tracking antenna which can be used both for satellite broadcast receiving and satellite communication using a single tracking system by providing a planar antenna for receiving satellite broadcast and a planar antenna for satellite communication which have a single axis of rotation in common in the azimuth direction. SOLUTION: A planar antenna 1 for receiving satellite broadcast takes the output of a frequency converter 2 as an observation signal and generates a control signal for controlling a motor 4 by a control device 3. The antenna 1 is rotated in the azimuth direction through a power transmission system 5, and the antenna 1 is forced to track the azimuth direction where a receive signal is maximum. An antenna for satellite communication is rotated on the same axis of rotation. As satellite broadcast and mover satellite communication use a stationary satellite, the respective satellites are different in position, but the positional relationship will not be changed. Accordingly, it is possible to control two antennae in the optimum azimuth direction at the same time using one tracking mechanism.</p> |
