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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">radioelectronics</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений России. Радиоэлектроника</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of the Russian Universities. Radioelectronics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1993-8985</issn><issn pub-type="epub">2658-4794</issn><publisher><publisher-name>Saint Petersburg Electrotechnical University</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-175</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>РАДИОТЕХНИЧЕСКИЕ СРЕДСТВА ПЕРЕДАЧИ, ПРИЕМА И ОБРАБОТКИ СИГНАЛОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RADIO ELECTRONIC FACILITIES FOR SIGNAL TRANSMISSION, RECEPTION AND PROCESSING</subject></subj-group></article-categories><title-group><article-title>Анализ механизмов образования помех на выходе многоуровневого конечного автомата</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of Mechanism of Formation of Interference at the Output Multilevel Finite State Machine</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитин</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>Y. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук (1988), старший научный сотрудник (1990), начальник научно-исследовательской лаборатории</p></bio><bio xml:lang="en"><p>Ph.D. in Engineering (1988), senior scientist (1990), the chief of the science laboratory</p></bio><email xlink:type="simple">yuriyan@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский филиал "Ленинградское отделение Научно-исследовательского института радио"</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Branch "Leningrad Department of Research Institute of Radio"</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2017</year></pub-date><volume>0</volume><issue>3</issue><fpage>52</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Никитин Ю.А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Никитин Ю.А.</copyright-holder><copyright-holder xml:lang="en">Nikitin Y.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://re.eltech.ru/jour/article/view/175">https://re.eltech.ru/jour/article/view/175</self-uri><abstract><p>Рассмотрена модель формирования многоуровневого колебания с огибающими различной формы. Проанализированы механизмы образования помех в спектре выходного колебания при многоуровневом синтезе частот для случаев идеального и реального выходных цифроаналоговых преобразователей.</p></abstract><trans-abstract xml:lang="en"><p>A single model for the formation of two-level and multi-level oscillations with envelopes of different shapes using the methods of passive digital frequency synthesis are considered. A comparative analysis of the spectra of oscillations at the output of the system of two-level and multilevel passive digital frequency synthesis is made. The mechanisms of interference generation in the spectrum of the output oscillations with multilevel frequency synthesis are analyzed for the case of the perfect output digital-to-analog converter (DAC), with the bit width fractional multiple to the bit width of the phase accumulator (FA). It is also shown that additional spectral components appear, which are absent at the integral bit width relation of DAC and FA.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Пассивный цифровой синтез</kwd><kwd>конечный автомат</kwd><kwd>накапливающий сумматор</kwd><kwd>цифроаналоговый преобразователь</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Passive digital synthesis</kwd><kwd>finite state machine</kwd><kwd>an accumulator</kwd><kwd>a digital to analog converter</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Никитин Ю. А. Спектры колебаний при пассивном цифровом синтезе частот // Радиотехника. 1990. № 7. С. 43-49.</mixed-citation><mixed-citation xml:lang="en">Nikitin Yu. A. Spectra of Oscillations in Passive Digital Frequency Synthesis. Radiotekhnika [Radio Engineering]. 1990, no. 7, pp. 43-49. 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