A.M. Signal generator having an r.f. output level control

Details A.M. Signal generator having an r.f. output level control A.M. Signal generator having an r.f. output level control

1975-07-14

1977-03-22

Caldwell, John W.

328151, H04B 104, H04B 168

Patent

active

040139611

ABSTRACT:
An A.M. signal generator having an r.f. level control arrangement includes a modulator whose output gain is controllable, a detector for detecting the A.M. wave produced by the modulator and means for sampling and storing the output of the detector at times occurring when the modulating wave passes through a predetermined amplitude level. The sampled and stored signal is then compared with a D.C. voltage and the resultant of the comparison is applied back to the modulator in opposite fashion to variation in the level of the A.M. wave.

REFERENCES:
patent: 2142335 (1939-01-01), Scott
patent: 3283252 (1966-11-01), Mead et al.
patent: 3753132 (1973-08-01), Hill
patent: 3768024 (1973-10-01), Letosky

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