| 摘要 |
PURPOSE:To decrease the height of antenna when the antenna is installed to an automobile or the like by fitting an arm possible for being raised and brought down to a reflecting plate of a parabolic antenna and a primary radiator and a converter to the tip of the antenna. CONSTITUTION:The arms 9, 10 are made raised and brought down to the reflecting plate 5 of the parabolic antenna. The primary radiator and the converter 8 are fitted to the tip of the arms 9, 10. In using the antenna, the primary radiator and the converter 8 are opposed to the reflecting plate 5 at a prescribed position. When the antenna is not in use, the arms 9, 10 are brought down so as to store the primary radiator and the converter 8 into the reflecting plate (state shown in dotted lines in Fig.). Thus, the height of antenna is decreased when the antenna is installed to the automobile or the like. |
