FIELD: radio engineering, communication.
SUBSTANCE: method for frequency modulation and demodulation of high-frequency signals involves interaction of high-frequency and low-frequency signals in a device for frequency modulation and demodulation of signals, which is made from a reactive four-terminal circuit, a two-electrode nonlinear element, a high-frequency load, a low-pass filter, a separating capacitor and a low-frequency load, wherein the required frequency characteristics of parameters of the reactive four-terminal circuit are determined by given mathematical expressions.
EFFECT: providing an operation for generation of a frequency-modulated signal with variable frequency according to the law of variation of the amplitude of a controlled low-frequency signal and operations for demodulation and filtration of the frequency-modulated signal with amplitude gain.
2 cl, 4 dwg
