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    • 18. 发明授权
    • External mounted amplifiers with active interference cancelation using diversity antennas
    • 使用分集天线的主动干扰消除的外置放大器
    • US08903346B2
    • 2014-12-02
    • US13073111
    • 2011-03-28
    • Larry G. FischerDavid WilleyChad Boeckman
    • Larry G. FischerDavid WilleyChad Boeckman
    • H04B1/06H04B7/00H04B7/08
    • H04B7/084
    • A system includes a first external mounted amplifier (EMA) having a first low-noise amplifier (LNA) coupled to a first antenna, a second EMA having a second LNA coupled to a second antenna, a first splitter coupled between the first antenna and the first LNA, a first phase shifter coupled to the first splitter, and a second mixer coupled to the first phase shifter. The first LNA is operable to receive a first input signal from first antenna. The second LNA is operable to receive a second input signal from second antenna. The first splitter is operable to derive a first sampling signal from first signal. The first phase shifter is operable to shift the phase of first sampling signal to create a second cancelation signal. The second mixer is operable to mix a second input signal derived from second signal with second cancelation signal to create a second output signal.
    • 一种系统包括具有耦合到第一天线的第一低噪声放大器(LNA)的第一外部安装放大器(EMA),耦合到第二天线的具有第二LNA的第二EMA,耦合在第一天线和第二天线之间的第一分离器 第一LNA,耦合到第一分离器的第一移相器和耦合到第一移相器的第二混频器。 第一LNA可用于从第一天线接收第一输入信号。 第二LNA可操作以从第二天线接收第二输入信号。 第一分路器可操作以从第一信号导出第一采样信号。 第一移相器可操作以移位第一采样信号的相位以产生第二消除信号。 第二混频器可操作以将从第二信号导出的第二输入信号与第二消除信号混合以产生第二输出信号。