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    • 2. 发明授权
    • System and method for low delay corrective feedback power amplifier control
    • 低延迟校正反馈功率放大器控制系统和方法
    • US07570928B2
    • 2009-08-04
    • US11771130
    • 2007-06-29
    • Rahul MagoonMorten DamgaardRoberto Aparicio JooScott D. KeeIchiro Aoki
    • Rahul MagoonMorten DamgaardRoberto Aparicio JooScott D. KeeIchiro Aoki
    • H04B1/66
    • H03G3/004H03F1/34H03F3/19H03F3/24H04B2001/0433
    • A system for controlling the power output of a power amplifier includes a power amplifier through which a transmit signal having an amplitude-modulated (AM) component and a phase-modulated (PM) component is passed and amplified, the power amplifier comprising a forward path, a feedback signal comprising a portion of the output of the power amplifier, a first control loop configured to receive the feedback signal and configured to apply an amplitude modulated (AM) signal to the power amplifier and configured to control the gain of the power amplifier, a second control loop configured to receive the feedback signal and configured to correct for offsets in the forward path and to linearize the first control loop; and a third control loop configured to receive the feedback signal and configured to control the phase of the PM component of the transmit signal.
    • 用于控制功率放大器的功率输出的系统包括:功率放大器,具有幅度调制(AM)分量和相位调制(PM)分量的发射信号通过该功率放大器通过并放大,所述功率放大器包括前向路径 ,包括功率放大器的输出的一部分的反馈信号;第一控制回路,被配置为接收反馈信号并被配置为将幅度调制(AM)信号施加到功率放大器并且被配置为控制功率放大器的增益 第二控制回路,被配置为接收所述反馈信号并被配置为校正所述正向通路中的偏移并且使所述第一控制回路线性化; 以及第三控制回路,被配置为接收所述反馈信号并被配置为控制所述发射信号的PM分量的相位。