METHOD FOR GENERATION AND FREQUENCY-MODULATION OF HIGH-FREQUENCY SIGNALS AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2013 - IPC H03C5/00 H03D3/00 

FIELD: radio engineering, communication.

SUBSTANCE: apparatus for generation and frequency modulation of high-frequency signals consists of a source of dc voltage and a low-frequency control signal, a three-terminal nonlinear element, a forward transmission circuit, a feedback circuit and a load, wherein the forward transmission circuit consists of a three-terminal nonlinear element; the feedback circuit used is an external feedback in form of an arbitrary four-terminal element connected to the three-terminal nonlinear element on a series-parallel circuit; the three-terminal nonlinear element is connected by the output electrode and common electrode to the load, which is in form of a first two-terminal element with complex resistance; the control electrode and the common electrode of the three-terminal nonlinear element is connected to a second two-terminal element with complex resistance; the imaginary component of the load resistance and the imaginary component of the resistance of the source of the input high-frequency signal of the generator and the frequency modulator in gain mode are composed of two series-connected parallel circuits with parameters.

EFFECT: high noise-immunity of the receiver.

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