FIELD: physics; radio.
SUBSTANCE: invention relates to radio engineering and can be used as a fast frequency-switched heterodyne of a receiver and in other devices where there is need for fast frequency tuning with pure spectrum of the output signal. The digital frequency synthesiser comprises a controlled generator, two variable-ratio dividers, a reference generator, two frequency-phase detectors, an inverting adder, a buffer amplifier, a microcontroller and an inverter.
EFFECT: fast and stable operation with retention of high spectral purity of the output signal.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| FREQUENCY SYNTHESIZER WITH ACOUSTIC CIRCUIT OF ADAPTIVE FREQUENCY AND PHASE AUTO TUNING | 2007 |
|
RU2329596C1 |
