Multiple signal intermodulation reduction system
    2.
    发明授权
    Multiple signal intermodulation reduction system 有权
    多信号互调减少系统

    公开(公告)号:US07256649B2

    公开(公告)日:2007-08-14

    申请号:US11057979

    申请日:2005-02-15

    IPC分类号: H03F3/68 H04L25/49

    摘要: An intermodulation product reduction or cancellation amplifier received two input signals that are split in quadrature wherein the inphase outputs are summed and then amplified as an inphase signal, and the quadrature outputs are fixed-phase phase-shifted, then summed and then amplified as a quadrature signal. The inphase and quadrature signals are fed into an output hybrid for canceling intermodulation products, where the fixed-phase phase shift is +/−60° for reducing 3rd order, +/−36° for reducing 5th order, and +/−25.71° for reducing 7th order intermodulation products, for examples, for improved signal communications of the two signals over a common antenna or link.

    摘要翻译: 互调产品减少或消除放大器接收到两个正交分割的输入信号,其中同相输出被相加,然后被放大为同相信号,正交输出是固定相位相移,然后求和然后被放大为正交 信号。 同相和正交信号被馈送到输出混合中以消除互调产物,其中固定相位相移为+/- 60°以减少3阶,+/- 36°以减小5阶和+/- 25.71° 例如,为了减少第七阶互调产物,用于通过公共天线或链路改善两个信号的信号通信。