Patent ID: 8514122

Claim:
An analog-digital conversion system comprising at least one variable gain amplifier amplifying an input signal e, an analog-digital converter CAN digitizing said signal e, an interference-suppressing digital processing module for processing the digitized signal, a first automatic gain control AGC loop, being an analog AGC loop, comparing an estimate of the output power from the CAN converter with a control setpoint g 1 being the control setpoint of the analog AGC loop, a gain ga used to control the variable gain amplifier being deduced from the comparison made by the first automatic gain control AGC loop, the system further comprising a second automatic gain control AGC loop, being a digital loop, said digital loop comparing an estimate of the power after the interference-suppressing digital processing with a predetermined control setpoint gn, the analog AGC loop being controlled by a control setpoint deduced from the comparison made by the second automatic gain control AGC loop.