FIELD: radio equipment.
SUBSTANCE: invention relates to the field of radio equipment. Frequency modulation frequencies synthesizer consists of in-series connected reference crystal oscillator, a frequency divider with the fixed division factor, frequency-phase detector, low-pass filter, voltage controlled generator, which output is connected to the variable division factor frequency divider input, which output is connected to the frequency-phase detector second input. Additionally, the preliminary distortions device is introduced, which input is connected to the modem first output, and the output is to the low-pass filter second input.
EFFECT: technical result of the invention consists in the frequency-modulated signal production with practically unlimited from above in frequency modulation band.
1 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LOW DISTORTION FREQUENCY MODULATED DIGITAL SIGNAL CONDITIONER | 2021 |
|
RU2765273C1 |
| FREQUENCY SYNTHESIZER WITH WIDEBAND MODULATION | 2019 |
|
RU2713569C1 |
| SYNTHESIZER WITH SWITCHED PASS BAND OF PHASE-LOCKED LOOP | 2024 |
|
RU2827940C1 |
| DIGITAL FREQUENCY SYNTHESISER | 2010 |
|
RU2440668C1 |
| SYNTHESIZER WITH SWITCHED BANDPASS PHASE-LOCKED LOOP RING | 2023 |
|
RU2812098C1 |
| FREQUENCY SYNTHESIZER | 2010 |
|
RU2434322C1 |
| FREQUENCY SYNTHESISER | 2009 |
|
RU2395899C1 |
| DIGITAL FREQUENCY SYNTHESIZER WITH FREQUENCY MODULATION | 0 |
|
SU1704266A1 |
| FREQUENCY SYNTHESISER | 2009 |
|
RU2394367C1 |
| ADAPTIVE FREQUENCY SYNTHESISER WITH SWITCHING OF ELEMENTS OF RING OF PHASE AUTOMATIC CONTROL | 2010 |
|
RU2419201C1 |
