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H03C3/09—Modifications of modulator for regulating the mean frequency
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03C—MODULATION
H03C3/00—Angle modulation
H03C3/02—Details
H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03C—MODULATION
H03C3/00—Angle modulation
H03C3/10—Angle modulation by means of variable impedance
H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
H03C3/145—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit by using semiconductor elements
