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    Space diversity receiver with means for combining signals from the two channels
    7.
    发明授权
    Space diversity receiver with means for combining signals from the two channels 失效
    具有用于组合来自两个信道的信号的装置的空间分集接收机

    公开(公告)号：US4386435A

    公开(公告)日：1983-05-31

    申请号：US283810

    申请日：1981-07-16

    申请人： Wolfgang Ulmer ,  Klaus Peterknecht

    发明人： Wolfgang Ulmer ,  Klaus Peterknecht

    IPC分类号： H04B7/08

    CPC分类号： H04B7/084

    摘要： A space diversity receiver with a combiner in which the useful signals of two space diversity receiver branches are connected together with a summing amplifier in the IF frequency band, and wherein an electronically controlled phase corrector P is mounted in one of the receiver branches and in which a phase monitoring circuit provides an output signal to control the phase corrector and is connected at the output of the electronic phase corrector between the two receiving branches. The space diversity receiver is constructed in the simplest possible manner with the lowest possible electrical interference and provides that the phase monitoring circuit consists of a phase discriminator D1 to which the signal from one reception branch is supplied through an automatically gain control amplifier RV2 without phase shift and the signal from the other receiving branch is supplied with an identical automatically gain controlled amplifier RV1 and through a 90-degree phase shifter. The output signal of the phase discriminator D1 is supplied to a comparator K0 and to a square law transfer circuit QS and depending on its absolute value determines the clock frequency of a clock generator T that drives a forward/backward counter Z. The respective position of the forward/backward counter Z is converted with a memory SP so as to control the phase corrector P which can be set in a step-by-step manner.

    摘要翻译： 一种具有组合器的空间分集接收机，其中两个空间分集接收器分支的有用信号与IF频带中的求和放大器连接在一起，并且其中电子控制相位校正器P安装在一个接收器分支中，并且其中 相位监视电路提供输出信号以控制相位校正器，并且在两个接收分支之间的电子相位校正器的输出处连接。 空间分集接收机以尽可能最小的电气干扰以最简单的方式构成，并且提供相位监视电路由相位鉴别器D1组成，通过自动增益控制放大器RV2提供来自一个接收支路的信号，无相移 并且来自另一接收支路的信号被提供有相同的自动增益控制放大器RV1和90度移相器。 相位鉴别器D1的输出信号被提供给比较器K0和平方律转移电路QS，并且根据其绝对值确定驱动前向/后向计数器Z的时钟发生器T的时钟频率。 前进/后退计数器Z用存储器SP转换，以控制可以逐步设置的相位校正器P.