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    • 1. 发明申请
    • WIDE SCAN STEERABLE ANTENNA WITH NO KEY-HOLE
    • 宽扫描无钥匙孔的可转向天线
    • US20140104125A1
    • 2014-04-17
    • US13652680
    • 2012-10-16
    • Eric CHOINIEREAiping LiangRichard HorthPhilippe Loiselle
    • Eric CHOINIEREAiping LiangRichard HorthPhilippe Loiselle
    • H01Q3/20
    • H01Q3/08H01Q1/28H01Q3/18H01Q19/134H01Q19/19
    • A steerable antenna architecture, or configuration, for optimal steering of transmitting and/or receiving beam over wide scan angles, is capable of steering the beam on a full hemisphere (2 π steradians), with no singularity or key-hole within a coverage area and with only one RF rotary joint. The architecture includes a dual-reflector assembly defining an antenna focal point located close to a main reflector surface and a signal feed chain having a signal source located adjacent to the antenna focal point and defining a feed axis substantially pointing towards a sub-reflector intersection point. A first actuator rotates the feed chain and the dual-reflector assembly about a first rotation axis generally perpendicular to the feed axis and not intersecting with the coverage area. A second actuator rotates one of the main reflector and the dual-reflector assembly about a second rotation axis aligned with the feed axis.
    • 用于在宽扫描角度上发射和/或接收光束的最佳转向的可导向天线结构或配置能够在整个半球(2&pgr-steradians)上引导光束,在覆盖范围内没有奇点或键孔 只有一个RF旋转接头。 该架构包括限定靠近主反射器表面的天线焦点的双反射器组件和具有位于天线焦点附近的信号源的信号馈送链,并且限定基本上指向子反射器交点的馈送轴 。 第一致动器围绕基本垂直于进给轴线的第一旋转轴线旋转进给链和双反射器组件,并且不与覆盖区域相交。 第二致动器围绕与进给轴线对准的第二旋转轴旋转主反射器和双反射器组件中的一个。