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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">bsuir</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады БГУИР</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady BGUIR</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7648</issn><issn pub-type="epub">2708-0382</issn><publisher><publisher-name>БГУИР</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35596/1729-7648-2019-126-8-43-49</article-id><article-id custom-type="elpub" pub-id-type="custom">bsuir-2421</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>ЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICS</subject></subj-group></article-categories><title-group><article-title>ШИРОКОПОЛОСНЫЙ ТРАНСФОРМАТОР ДЛЯ СОГЛАСОВАНИЯ НИЗКООМНЫХ НАГРУЗОК В ДИАПАЗОНЕ МЕТРОВЫХ ДЛИН ВОЛН</article-title><trans-title-group xml:lang="en"><trans-title>WIDEBAND TRANSFORMER FOR MATCHING OF LOW-IMPEDANCE LOADS IN VERY HIGH FREQUENCY RANGE</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>Наумович</surname><given-names>Н. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Naumovich</surname><given-names>N. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н, начальник Научно-конструкторского центра перспективных радиоэлектронных систем сантиметрового и миллиметрового диапазонов длин волн</p><p>220013, г. Минск, ул. П. Бровки, д. 6</p></bio><bio xml:lang="en"><p>PhD, Head of the Scientific and Design Center of Centimeter and Millimeter Wavelengths Prospective Electronic Systems</p><p>220013, Minsk, P. Brovka st., 6</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юбко</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Joubko</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заместитель начальника Научно-конструкторского центра перспективных радиоэлектронных систем сантиметрового и миллиметрового диапазонов длин волн </p><p>220013, г. Минск, ул. П. Бровки, д. 6</p></bio><bio xml:lang="en"><p>Deputy Head of the Scientific and Design Center of Centimeter and Millimeter Wavelengths Prospective Electronic Systems</p><p>220013, Minsk, P. Brovka st., 6</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Давыдов</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Davydov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н, проректор по учебной работе </p><p>220013, г. Минск, ул. П. Бровки, д. 6</p></bio><bio xml:lang="en"><p>PhD, Vice-Rector for education</p><p>220013, Minsk, P. Brovka st., 6</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мальцев</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Maltsev</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мальцев Олег Сергеевич, м.н.с Научно-конструкторского центра перспективных радиоэлектронных систем сантиметрового и миллиметрового диапазонов длин волн</p><p>220013, г. Минск, ул. П. Бровки, д. 6</p></bio><bio xml:lang="en"><p>Maltsev Oleg Sergeevich, junior associate researcher the Scientific and Design Center of Centimeter and Millimeter Wavelengths Prospective Electronic Systems</p><p>220013, Minsk, P. Brovka st., 6</p></bio><email xlink:type="simple">maltsev@bsuir.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2019</year></pub-date><volume>0</volume><issue>7-8</issue><fpage>43</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Наумович Н.М., Юбко А.П., Давыдов М.В., Мальцев О.С., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Наумович Н.М., Юбко А.П., Давыдов М.В., Мальцев О.С.</copyright-holder><copyright-holder xml:lang="en">Naumovich N.M., Joubko A.P., Davydov M.V., Maltsev O.S.</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://doklady.bsuir.by/jour/article/view/2421">https://doklady.bsuir.by/jour/article/view/2421</self-uri><abstract><p>В работе представлены результаты предварительных исследований возможности разработки широкополосного трансформатора для согласования низкоомных комплексных нагрузок в диапазоне метровых длин волн с использованием связанной линии передачи мощности. Линия передачи выполнена на основе полиимида в виде гибкой печатной платы. Такой подход позволит выполнять широкополосное согласование каскадов с нестандартными величинами входного и выходного импеданса в широком диапазоне длин волн и мощностей за счет возможности определять импеданс проектируемой линии передачи с учетом характера нагрузки. На первом этапе было выполнено компьютерное моделирование трансформатора с коэффициентом трансформации импеданса 4:1 в диапазоне (40–240 МГц) для предельных входного и выходного сопротивления 50 и 12,5 Ом соответственно. Это позволило определить конструктивные параметры линии передачи. Также была предложена методика измерений величины вносимых потерь, необходимость разработки которой связана с невозможностью применения стандартных методов с использованием векторного анализатора цепей. Было проведено макетирование устройства и получены значения коэффициента стоячей волны относительно входа устройства и величины вносимых потерь для различных уровней входной мощности. Результаты макетирования показали, что изготовленный трансформатор обеспечивает коэффициент стоячей волны не хуже 2 во всем заданном частотном диапазоне. Вносимые потери составили от 0,02 до 1,54 дБ в зависимости от уровня входной мощности (1–1000 мВт). Полученные результаты дают основания продолжить разработку широкополосных трансформаторов с произвольным входным/выходным сопротивлением для согласования комплексных низкоомных нагрузок.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of preliminary research in the wideband transformer development for matching low-ohms loads in the very high frequency band with the use of a coupled transmission lines. The transmission line was produced with the using of a polyimide in the form of flexible printed circuit board. This way may be useful for wideband matching different cascades with custom values of input and output impedance in the wide band of frequencies and powers with use of a defining impedance capability with a load character in mind. On the first stage, the computer simulation of transformer with a transformer ratio 4:1 in the band (40–240 MHz) was completed for limiting values of input and output resistances – 50 and 12,5 Ohms respectively. Results of simulation give us the data about constructive parameters of the transmission line. The measurement technique for insertion loss was worked out. The reason of that is an impossibility of appliance standard methods with using a network vector analyzer. The prototyping was done and values of the standing wave ratio and inserting losses were obtained for different levels of the input power. According to received data, it can be affirmed, that the manufactured transformer provides the standing wave ratio better (lower) that two. Inserting losses vary from 0,02 to 1,54 dB depending from a input power level (1– 1000 mW). The obtained results afford ground for working continuation in this field – a development of wideband transformers for matching of low-ohms loads.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>широкополосные согласующие цепи</kwd><kwd>комплексный импеданс</kwd><kwd>низкоомная нагрузка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>wideband matching networks</kwd><kwd>complex impedance</kwd><kwd>low-impedance load</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">Ranzani L.,Spietz L., Popovic Z., Aumentado J.Transmission-Line Impedance Transformer for Broadband Superconducting Circuits. IEEE Transactions on Applied Superconductivity.2012;22(5):1500606. 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