Automatic gain control system

Details Automatic gain control system Automatic gain control system

1981-10-13

1985-01-08

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

328145, 330278, H03G 330

Patent

active

044929307

ABSTRACT:
A system in which automatic gain control is not applied to modify an incoming carrier signal over the first 40 dB of signal level, employs an AGC system in which a further signal is generated for further modification of the modified carrier signal to obtain the original carrier signal modified by a linear logarithmic response to the AGC signal over the entire signal range of the apparatus. In addition, automatic gain control signals derived from both an envelope AM detector and a synchronous AM detector are added together whereby a continuous AGC signal is generated regardless of the source of the signal.

REFERENCES:
patent: 4376267 (1983-03-01), Chu et al.

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