Linear Plate Modulation of Triode Radio-Frequency Amplifiers

An analysis of the conditions to produce linear complete plate modulation of triode radio-frequency amplifiers shows that the grid-excitation voltage and bias potential of triode amplifiers have to be modulated together with the plate-supply potential. Besides giving linear modulation characteristic...

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Bibliographic Details
Published in:Proceedings of the IRE 1940-12, Vol.28 (12), p.563-569
Main Author: Chao-Ying Meng
Format: Article
Language:English
Subjects:
Chaos
Chirp modulation
Equations
Impedance
Lab-on-a-chip
Oscillators
Radio frequency
Radiofrequency amplifiers
Shape
Voltage
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Summary:An analysis of the conditions to produce linear complete plate modulation of triode radio-frequency amplifiers shows that the grid-excitation voltage and bias potential of triode amplifiers have to be modulated together with the plate-supply potential. Besides giving linear modulation characteristics, the redected impedance of the radio-frequency amplifier to the modulator is a constant resistance in the present scheme and excessive grid dissipation at the trough of modulation is eliminated. Calculations using the point-to-point method on different triodes and experimental measurements made on the triode 801 agree very well with the theory.
ISSN:0096-8390
2162-6634
DOI:10.1109/JRPROC.1940.229016