AGC circuit based on a peak detection system

Year	Description
2000	Invention patented by Osamu Nishikido on February 28th, 2000. Abstract: In an automatic gain control (AGC) circuit based on a peak detection system having two filters, a voltage comparator selects one of two voltages and compares the selected voltage with a detection signal output from a wave detector. A second AGC filter selects a cut-off frequency based on the result of comparison of the voltage comparator and supplies a signal resulting from low-pass filtering, based on the selected cut-off frequency, to a voltage-controlled amplifier as a control voltage. When a highly modulated signal is abruptly input, selection of the cut-off frequency of the second AGC filter occurs.
Source: selected by the editor from original sources.

Invention: AGC circuit based on a peak detection system