Amplitude modulated transmitter

Details Amplitude modulated transmitter Amplitude modulated transmitter

1975-04-16

1976-06-01

Kominski, John

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 16T, H03C 106

Patent

active

039612872

ABSTRACT:
An amplitude modulated transmitter is disclosed for use in the frequency range generally below 50 mega-hertz. The transmitter is provided with a series diode modulator which is provided with a corrected modulating signal which biases the diode in proportion to the modulating signal. The modulating signal is derived from comparison in a difference amplifier between the desired audio input signal and a signal derived from the output of the output amplifier by means of a directional coupler. The directional coupler samples the magnitude and phase of the current and voltage at the output and feeds a signal proportional to the inciden as contrasted to any reflected component, of the output signal.

REFERENCES:
patent: 2227505 (1941-01-01), Kummerer
patent: 2729792 (1956-01-01), Castruccio
patent: 3200336 (1965-08-01), Valakos et al.
patent: 3737809 (1973-06-01), Parkyn
patent: 3882425 (1975-05-01), Briley

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