Modulation system with carrier control

Details Modulation system with carrier control Modulation system with carrier control

1974-07-05

1977-11-15

Safourek, Benedict V.

325182, 325187, H04B 104

Patent

active

040587690

ABSTRACT:
System for controlling the magnitude of an RF carrier signal that is concurrently being amplitude-modulated, whereby there is provided an amplitude-modulated signal that is compatible for reception either as a conventional AM signal or as an SSB signal. The instantaneous power of a carrier signal is adjusted in response to the instantaneous power of a modulation signal available to modulate the carrier signal. The carrier signal power is allowed to fluctuate between a maximum value and a minimum or no-modulation value, which may provide a minimum carrier level notwithstanding the absence of a modulating signal.

REFERENCES:
patent: 2063278 (1936-12-01), Von Wedel
patent: 2243221 (1941-05-01), Quilter
patent: 3260966 (1966-07-01), Murray
patent: 3335370 (1967-08-01), Wittig et al.
Radio Engineers' Handbook, Terman, pp. 531-532, 547, 548, copyright 1943.

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