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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">izmertech-376</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 ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RADIO MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Особенности определения комплексных коэффициентов передачи преобразователей частоты методами совокупных измерений</article-title><trans-title-group xml:lang="en"><trans-title></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>Фролов</surname><given-names>Д. Р.</given-names></name></name-alternatives><email xlink:type="simple">frolov.drf@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бабенко</surname><given-names>А. А.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бирюк</surname><given-names>А. Э.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кожевников</surname><given-names>В. В.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Свидлов</surname><given-names>А. А.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Кубанский государственный университет</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>07</day><month>02</month><year>2023</year></pub-date><volume>0</volume><issue>3</issue><fpage>52</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/376">https://www.izmt.ru/jour/article/view/376</self-uri><abstract><p>Рассмотрены причины, ограничивающие точность измерений комплексных коэффициентов передачи преобразователей частоты методами на основе различных комбинаций параллельного и последовательного соединений указанных преобразователей. Такие измерения нельзя выполнять без использования взаимных преобразователей частоты. Установлено, что предельная точность данных методов измерений определяется степенью взаимности как минимум одного преобразователя частоты.</p></abstract><trans-abstract xml:lang="en"><p>The reasons that limit accuracy of frequency converters frequency response measurements that are based on different combinations of parallel and serial connection of frequency converters have been considered. It is demonstrated that the carrying out of such measurements without using reciprocal frequency converters is not possible. It was discovered that the ultimate accuracy of such measurements was determined by the reciprocity degree of at least one of the frequency converters involved in the measurement process.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сверхвысокочастотный смеситель</kwd><kwd>преобразователь частоты</kwd><kwd>нелинейный векторный анализ цепей</kwd><kwd>комплексный коэффициент передачи</kwd><kwd>RF mixer</kwd><kwd>frequency converter</kwd><kwd>non-linear vector network analysis</kwd><kwd>frequency response</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">Dunsmore J. P. Handbook of Microwave Component Measurements With Advanced VNA Techiques. John Wiley &amp; Sons, Ltd., 2012.</mixed-citation><mixed-citation xml:lang="en">Dunsmore J. P. Handbook of Microwave Component Measurements With Advanced VNA Techiques. 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