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METHODE FOR CONTROLLING AMPLITUDE AND PHASE OF OUTPUT SIGNAL, AUTOMATIC GAIN AND PHASE CONTROLLER, AND FEED FORWARD AMPLIFIER
METHODE FOR CONTROLLING AMPLITUDE AND PHASE OF OUTPUT SIGNAL, AUTOMATIC GAIN AND PHASE CONTROLLER, AND FEED FORWARD AMPLIFIER
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机译:输出信号的幅度和相位控制方法,自动增益和相位控制器以及前馈放大器
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摘要
PURPOSE: A method of controlling an amplitude and a phase of an output signal, an automatic gain and a phase controller, and a feed forward amplifier is provided to reduce a distortion of a linear amplifier by using a feed forward. CONSTITUTION: The method for controlling a phase and an amplitude of an output signal S comprises the steps of: dividing the output signal S(out) to an output signal S(a) and an output signal S(b); saturating the output signal to generate the saturated output signal S(a); controlling a phase and an amplitude of the output signal S(b) to generate the controlled output signal S(b); inputting the controlled output signal S(b) to a log detector to generate a first signal S(log); mixing the saturated output signal S(a) and the saturated and controlled output signal S(b) to generate a first mixed signal; inputting a saturated output signal S(in) to the log detector to generate a second signal S(log); mixing the saturated output signal S(b) and the input signal S(in) to generate a second mixed signal; determining a phase difference between the output signal S(b) and the input signal S(in); and determining an amplitude of between the output signal S(b) and the input signal S(in).
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