| 摘要 |
FIELD: radio engineering, in particular, engineering of devices for forming oscillations with frequency changing in accordance to value of digital control code, possible use for forming frequency-modulated oscillations. ^ SUBSTANCE: frequency synthesizer contains control block 7, sources of heterodyne voltages 8-10, support generator 1, frequency splitters 2,6, phase detector 3, low frequencies filters 4,19, controlled generator 5, limiter amplifier 20, short pulses generator 21, forcing pulses generator 22, n identical frequency conversion blocks (11-1...11-n), each one of which is made in form of commutator 12, first mixer 13, second mixer 14 and splitter of frequency in two 15. ^ EFFECT: increased speed of operation of frequency synthesizer and decreased level of side components of synthesized voltage. ^ 1 dwg |
