On-orbit reconfigurability of a shaped reflector with feed/reflector
defocusing and reflector gimballing
    2.
    发明授权
    On-orbit reconfigurability of a shaped reflector with feed/reflector defocusing and reflector gimballing 失效
    具有进料/反射器散焦和反射器球形的成形反射器的在轨可重构性

    公开(公告)号:US6031502A

    公开(公告)日:2000-02-29

    申请号:US753660

    申请日:1996-11-27

    摘要: A system and method for changing the radiation pattern of an antenna assembly of a satellite in orbit is provided. The antenna assembly includes a reflector antenna fed by a feed assembly. The reflector antenna transmits and receives signals within a radiation pattern. The reflector antenna and the feed assembly are movably mounted to a sliding mechanism so that they can be displaced with respect to one another. The displacement causes defocusing as the reflector antenna is displaced from the focus point. The defocusing causes the radiation pattern to become more compact or broadened. Thus, the radiation pattern of the satellite provided with a single reflector antenna and a single feed element may be changed while the satellite is in orbit. The system and method include gimballing the reflector antenna to steer the radiation pattern.

    摘要翻译: 提供了一种用于改变卫星在轨道中的天线组件的辐射模式的系统和方法。 天线组件包括由馈送组件馈送的反射器天线。 反射器天线在辐射图中发射和接收信号。 反射器天线和馈送组件可移动地安装到滑动机构,使得它们可以相对于彼此移位。 当反射器天线从聚焦点移位时,位移引起散焦。 散焦导致辐射图变得更加紧凑或变宽。 因此,当卫星进入轨道时,可以改变设置有单个反射器天线和单个馈送元件的卫星的辐射图。 该系统和方法包括将反射器天线槌球以控制辐射图。