Automatic gain control system
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United States of America Patent
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Jan 8, 1985
Grant Date -
N/A
app pub date -
Oct 13, 1981
filing date -
Oct 13, 1981
priority date (Note) -
Expired
status (Latency Note)
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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.
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