3662290 is referenced by 32 patents and cites 5 patents.

An automatic level control maintains an accurate output level measurement under conditions of high modulation index by developing a control signal proportional to the deviation of output level from a desired norm. Output level is determined as a function of the time that the modulation envelope thereof exceeds a predetermined threshold. The control is independent of distortions in recovered modulation envelope waveform introduced by conventional envelope detectors due to diode offset voltage and/or high modulation index and permits independent application of carrier level and modulation index controls.

Automatic control for amplitude-modulated signal source
Application Number
Publication Number
Application Date
August 5, 1970
Publication Date
May 9, 1972
Elliott William S
Collins Radio Company
H03c 01/00
H03G 03/20
H03C 01/00
H03C 01/02
View Original Source