| 摘要 |
PURPOSE:To selectively receive satellite radio waves from plural satellites without requiring main reflectors and primary radiators as many as the satellites nor increasing the installation space nor the cost by providing a means which moves a primary radiator in parallel in a radial direction of a main reflector according to the arrival directions of the satellite radio waves. CONSTITUTION:The primary radiator 3 receives the satellite radio waves which are reflected and converged by the main reflector 2 and is provided while integrated with a converter 6. A radiator moving rail 5 which is parallel to the radial direction of the main reflector 2 is provided through a stay 18 in front of the main reflector 2, and the primary radiator 3 is installed slidably on the radiator moving rail 5. The slide movement distance of the primary radiator 3 corresponding to one pulse of a control pulse signal for a stepping motor 4 which slides the primary radiator 3 is previously made to correspond to the quantity of variation in the incidence angle of the satellite radio wave on the main reflector 2. The number of generated pulses is therefore set to a specific value corresponding to the direction difference between the satellites A and B. |
