FREQUENCY SYNTHESIZER Russian patent published in 2016 - IPC H03L7/16 

FIELD: radar.

SUBSTANCE: invention relates to a frequency synthesizer. Synthesizer includes a phase-locked loop system, a direct digital synthesis (DDS) microcircuit consisting of in-series connected: a controller, a phase accumulator with feedback, an adder, an amplitude-phase converter, a DDS multiplier and a DAC, a control circuit including a phase memory device consisting of parallel sets of phase detuning registers and frequency registers and the first and the second multiplexers, a data former, herewith the phase memory device contains connected in parallel adders with feedback, and the DDS contains a sync pulse generator.

EFFECT: technical result is improvement of accuracy of determining parameters of target objects by onboard radars and reduction of weight and dimensions of the transceiving channel of the whole on-board radar due to optimization of the frequency synthesizer structure.

1 cl, 5 dwg