MICROWAVE FREQUENCY SYNTHESIZER Russian patent published in 2016 - IPC H03L7/00 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used in receiving-transmitting devices operating within SHF frequency band. SHF frequency synthesizer includes a SHF voltage-controlled generator, a directional coupler, a SHF mixer, a source of input SHF signal, the first frequency divider with variable division factor, frequency-response detector, the second frequency divider with variable division factor, a reference signal source, a low-pass filter, a phase comparator, a biased multivibrator, two diodes and an operational amplifier.

EFFECT: technical result consists in improvement of stable operation during retuning of the input SHF signal frequency.

1 cl, 4 dwg