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Automatic gain controller outputting control value varying nonlinearly, and a method of outputting a gain control signal thereof
Automatic gain controller outputting control value varying nonlinearly, and a method of outputting a gain control signal thereof
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机译:自动增益控制器输出非线性变化的控制值,以及输出其增益控制信号的方法
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摘要
An automatic gain controller having an estimator to estimate the level of an input signal, a subtractor to calculate a difference between the level estimated by the estimator and a predetermined reference value, a gain controller to output a control value achieved by scaling non-linearly the difference output by the subtractor, an accumulator to accumulate the output of the gain controller, and a modulator to modulate the output of the accumulator to a pulse width modulated signal. The gain controller outputs the control value proportional to a square of the difference. If en error between the power of the input signal and the reference value is great, the power can be quickly adjusted to a desired signal level, and if the error is small, the gain can be controlled finely.
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