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Methods of calculating the noise characteristics of the fractional frequency synthesizer system using MATLAB

Keywords:

V.I. Borisov – Dr. Sc. (Eng.), Professor, Corresponding Member of RAS, Scientific Head, JSC «Concern «Sozvezdie» (Voronez). E-mail: bvi@sozvezdie.su S.K. Romanov – Ph. D. (Eng.), Leading Research Scientist, JSC «Concern «Sozvezdie» (Voronez). E-mail: skromanov@rambler.ru N.M. Tikhomirov – Dr. Sc. (Eng.), Senior Research Scientist, Head of Scientific and Technical Bureau, JSC «Concern «Sozvezdie» (Voronez). E-mail: tikhomir@sozvezdie.su A.V. Lenshin – Dr. Sc. (Eng.), Associate Professor, Professor, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh). E-mail: andrey-lenshin@yandex.ru


We obtain relations for calculating the spectra of noise at the output of the frequency synthesizer with fractional frequency dividers using delta-sigma modulation in non-identical pulse-pump currents of the phase detector and the active low-pass filter using MATLAB system.
References:

 

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  2. Tikhomirov N.M., Romanov S.K., Lenshin A.V. Formirovanie CHM signalov v sintezatorakh s avtopodstrojjkojj. M.: Radio i svjaz. 2004. 210 s.
  3. Romanov S.K., Matycina A.I., Tikhomirov N.M. Metodika rascheta shumovykh kharakteristik sintezatorov chastot // Teorija i tekhnika radiosvjazi (nauch.-tekhn. sb. OAO «Koncern «Cozvezdie»). 2008. № 2. S. 67−72.
  4. Brian M. Miller. Multiple-ModulatorFractional‑NDivider. U.S. Patent 5038117. Aug. 6. 1991.
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  7. Borisov V.I., Romanov S.K., Lenshin A.V., Tikhomirov N.M, SHatalov E.V. Opredelenie pomekh drobnosti v fazocifrovykh sintezatorakh chastot, ispolzujushhikh delta-sigma moduljatory // Teorija i tekhnika radiosvjazi (nauch.-tekhn. sb. OAO «Koncern «Cozvezdie»). 2015. № 4. S. 47−53.
  8. Romanov S.K., Matycina A.I., Tikhomirov N.M. Vlijanie neravenstva tokov nakachki detektora na spektr pomekh v sintezatorakh s drobnymi deliteljami chastoty // Teorija i tekhnika radiosvjazi (nauch.-tekhn. sb. OAO «Koncern «Cozvezdie»). 2008. № 1. S. 111−117.

 

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