Amplitude modulator using a carrier tube and a peaking tube

Details Amplitude modulator using a carrier tube and a peaking tube Amplitude modulator using a carrier tube and a peaking tube

1980-08-05

1982-06-15

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 43R, 332 48, 332 64, H03C 124

Patent

active

043353630

ABSTRACT:
An amplitude modulator in which a radio frequency amplifier is arranged to produce a high power amplitude modulated radio frequency signal in a particularly efficient manner. The amplifier inlcudes two tetrode tubes, one of which is arranged to conduct continuously and the other is arranged to conduct only on the positive going excursions of a modulation signal, which is applied to its screen grid. The harmonic content of a carrier frequency signal which is applied to the control grids of both tetrodes is modified so as to minimize loss in the tetrodes themselves.

REFERENCES:
patent: 2210028 (1940-08-01), Doherty
patent: 3275950 (1966-09-01), Birr
patent: 3436686 (1969-04-01), Vackar
Tyler, "A New High-Efficiency High-Power Amplifier", Marconi Review, vol. 21, 1958, pp. 96-109.

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