FIELD: radio engineering, communication.
SUBSTANCE: method for amplitude, phase and frequency modulation of a high-frequency signal is based on interaction of a high-frequency signal and a low-frequency signal with a multifunctional apparatus made from a two-terminal nonlinear element, a reactive four-terminal element, a complex two-terminal element and a load, wherein optimum frequency characteristics of parameters of the reactive four-terminal element are selected in accordance with given mathematical expressions. The multifunctional apparatus for amplitude, phase and frequency modulation of a high-frequency signal has a dc voltage source, a two-terminal nonlinear element with a negative differential resistance, a reactive four-terminal element, a complex two-terminal element, a load and a low-frequency control signal source.
EFFECT: providing amplitude, phase and frequency modulation using one device in accordance with the law of variation of the amplitude of the low-frequency control signal with a longer linear section of the frequency modulation characteristic.
2 cl, 5 dwg
