FACTORS AFFECTING THE FREQUENCY DEVIATION IN REACTANCE-TUBE FREQUENCY MODULATION CIRCUITS | Zendy

Chai Yeh | Zendy; Y. K. Tzu | Zendy

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FACTORS AFFECTING THE FREQUENCY DEVIATION IN REACTANCE-TUBE FREQUENCY MODULATION CIRCUITS

Author(s) -

Chai Yeh,

Y. K. Tzu

Publication year - 1947

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.7.72

Subject(s) - reactance , frequency deviation , electrical reactance , electronic circuit , capacitive sensing , tube (container) , modulation (music) , frequency modulation , acoustics , physics , materials science , electrical engineering , voltage , inductance , radio frequency , automatic frequency control , engineering , composite material , quantum mechanics

In reactance-tube frequency modulation circuits, the fractional frequency deviation is expected to vary with the phase shift constants of the modulator and the Lf/Cf ratio of the tank-circuit of the oscillator. The way in which the frequency deviation is affected by these factors is discussed theoretically. Experimental checks are made, Two types of circuits are studied, the inductive and the capacitive reactance-tube circuits. It is found that within the straight portion, of the operating characteristic of the tube, the agreement is fairly satisfactory.

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