DIGITAL FREQUENCY SYNTHESIZER Russian patent published in 2023 - IPC H03B23/00 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering. To achieve the effect, a digital synthesizer of a variable frequency is proposed, which contains a series-connected address sensor of a periodic function 2, a periodic function calculation unit 9, a switch 10, a multiplier 11, an adder 12, a phase calculation unit 13, an amplitude calculation unit 14, a digital-to-analog converter 15 and a filter lower frequencies 16, as well as serially connected pseudo-random sequence length sensor 3 and a pseudo-random sequence generation unit 6, the output of which is connected to the second input of the switch 10, a signal duration code sensor 1 connected in series and a divider with a variable division factor 8, the output of which is connected to the clock inputs block for calculating a periodic function 9 and a block for generating a random sequence 6, connected in series with a frequency range code sensor 4, a frequency range calculation unit 7, the output of which is connected to the second input of the multiplier 11, an initial frequency code sensor 5, the output of which horo is connected to the second input of the adder 12.

EFFECT: automatic setting of the frequency range depending on the set value of the initial frequency of the output signal.

1 cl, 2 dwg