AUTOMATIC GAIN CORRECTION CIRCUIT WITH VARIABLE SETPOINT

摘要

The invention relates to an automatic gain correction circuit for radiofrequency signals. It applies in particular to the regulation of the amplification of signals for satellite radionavigation. The automatic gain correction circuit is able to receive an input radiofrequency signal (Se(t)) and to deliver an output radiofrequency signal (Ss(t)) whose mean amplitude is slaved to a setpoint (C). It comprises means for modifying the setpoint (C) as a function of the mean amplitude of the input signal (Se(t)) between a minimum setpoint value (C1) and a maximum setpoint value (C2), the minimum setpoint value (C1) corresponding to a first mean amplitude of the input signal (Se(t)) and the maximum setpoint value (C2) corresponding to a second mean amplitude of the input signal (Se(t)), the first mean amplitude being lower than the second mean amplitude.