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    Continuously variable phase-shifter for electrically down-tilting an antenna
    1.
    发明公开
    Continuously variable phase-shifter for electrically down-tilting an antenna 失效
    Kontinuierlich variabler Phasenschieberfürelektrisches Neigen einer Antenne

    公开(公告)号：EP0860890A1

    公开(公告)日：1998-08-26

    申请号：EP98400302.0

    申请日：1998-02-09

    申请人： Radio Frequency Systems, Inc

    发明人： Drach, William C.

    IPC分类号： H01P1/18 ,  H01Q1/32 ,  H01Q3/26

    CPC分类号： H01Q3/2605 ,  H01P1/184 ,  H01Q3/32

    摘要： A phase shifter for electrically adjusting the down-tilt of an antenna, based on rotating at least one phase wheel having a specially shaped dielectric. Each phase wheel is rotatably mounted between a stripline and the metallic ground plane of a feed system for an RF signal communicating the RF signal between each element of the antenna and a common terminal. The dielectric distributed on each phase wheel is shaped so that as the phase wheel is turned mechanically, the amount of dielectric directly beneath the stripline and above the metallic ground plane either increases or decreases in some proportion to the amount (angular displacement) the wheel is turned. All the phase wheels used in a system can be arranged, oriented, and tractively coupled so as to rotate in synchrony under the action of a single drive, which may itself be driven by a stepper motor for accurate, fine control. The phase wheels provide for continuous adjustment of the down-tilt of an antenna without having to convert between rotational and linear motion in moving dielectric into or out of position between the stripline and metallic ground plane.

    摘要翻译： 一种移相器，用于基于旋转具有特殊形状的电介质的至少一个相轮来电调节天线的向下倾斜。 每个相轮可旋转地安装在带状线和用于RF信号的馈电系统的金属接地平面之间，RF信号在天线的每个元件和公共端之间传送RF信号。 分布在每个相轮上的电介质的形状使得当相轮机械地转动时，直线下方和金属接地平面之下的电介质的量可以与轮的量（角位移）成一定比例增加或减小 转身。 系统中使用的所有相轮可以布置，定向和牵引耦合，以便在单个驱动器的作用下同步旋转，单个驱动器本身可以由步进电机驱动以进行准确，精确的控制。 相位轮提供天线的向下倾斜的连续调节，而不必在将电介质移动到带状线和金属接地平面之间的位置之间的转动和线性运动之间进行转换。