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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-193</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>ЭЛЕКТРОДИНАМИКА, МИКРОВОЛНОВАЯ ТЕХНИКА, АНТЕННЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRODYNAMICS, MICROWAVE ENGINEERING, ANTENNAS</subject></subj-group></article-categories><title-group><article-title>Способ миниатюризации микрополоскового двухшлейфного моста</article-title><trans-title-group xml:lang="en"><trans-title>The Method of Miniaturization of a Microstrip Branch-Line Couplers</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>Летавин</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Letavin</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистр по направлению "Радиотехника" (2016), аспирант Департамента радиоэлектроники и связи Института радиоэлектроники и  информационных технологий - РтФ Уральского федерального университета имени первого Президента России Б. Н. Ельцина. Автор 10 научных работ. Сфера научных интересов - прикладная электродинамика</p></bio><bio xml:lang="en"><p>Master’s Degree in Radioengineering (2016), postgraduate student of the Department of Radioelectronics and  Communication of Institute of Radio Electronics and  Information Technology of the Ural Federal University. The author of 10 scientific publications. Area of expertise: applying electrodynamics</p></bio><email xlink:type="simple">d.a.letavin@urfu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет им. первого Президента России Б. Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University n. a. the first President of Russia B. N. Yeltsin</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>10</month><year>2017</year></pub-date><volume>0</volume><issue>5</issue><fpage>41</fpage><lpage>46</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Летавин Д.А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Летавин Д.А.</copyright-holder><copyright-holder xml:lang="en">Letavin D.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/193">https://re.eltech.ru/jour/article/view/193</self-uri><abstract><p>Традиционные микрополосковые мостовые устройства применяются в различных радиоэлектронных устройствах. Однако размеры таких устройств могут быть  непрактичными, особенно на низких частотах. В этой связи представлена альтернативная  конструкция мостового устройства с применением электродинамических систем (ЭС),  эквивалентных индуктивной и емкостной нагрузкам четвертьволновых отрезков длинных  линий, составляющих мост. Для их размещения используется свободное пространство  внутри моста. Для учета влияния соседних проводящих линий друг на друга и других  факторов разработанная топология промоделирована в программе САПР AWR DE 13. Также  выполнена натурная модель устройства, на корой проведены измерения параметров с  помощью векторного сетевого анализатора Rohde &amp; Schwarz ZVA 24 и калибровочного  комплекта K52. Результаты моделирования и натурных измерений, близкие друг к другу,  показывают, что спроектированная топология моста обладает параметрами, близкими к  параметрам обычной конструкции при существенном (до 75 %) сокращении площади. Микрополосковый мост представленной топологии может быть изготовлен по стандартной технологии травления печатных плат. Форма ЭС выбрана для максимального  использования свободного пространства внутри моста без пересечения соседних  проводников. Толщина отрезков микрополосковых линий и промежутки между ними определялись с точки зрения технологической целесообразности.</p></abstract><trans-abstract xml:lang="en"><p>Traditional microstrip coupler devices have found various applications in radio engineering. They can be used in radiolocation, radio  navigation, communications, antenna systems, radio measurements  and other fields of technology. They are also used as a functional  node fo r building power dividers, mixers, modulators, power  summators, and beamforming elements. The design of the branch- line coupler consists of segments of microstrip lines with phase shifts of 90 degrees. However, the dimensions of such devices can be  impractical, especially at low frequencies. Therefore, it is necessary  to use various design solutions aimed at reducing the size of the  device, while maintaining its characteristics at the level of a standard device. In order to eliminate parasitic transmission bands, reduce  overall dimensions and economical manufacture, electrodynamic  structures (ESs) that function as quarter-wave segments will be introduced into the design topology, and their dimensions are much shorter in length, and they can be manufactured by standard etching technology of printed circuit boards. The shape of the ES is chosen  to maximize the use of free space within the coupler, without  crossing adjacent conductor lines. The thickness of the microstrip  lines and the gaps between them are selected in terms of  technological feasibility. To take into account the influence of  neighboring conductive lines on each other and other factors, the AWR DE 13 program was used. The compact design has the following dimensions 15.4 * 16.4 = 252.6 mm2, which is 75.7 %  less than the conventional design. Based on the simulation results, a prototype of a compact coupler was manufactured. Measurements of its parameters were carried out using the vector network analyzer Rohde &amp; Schwarz ZVA 24 and the calibration kit K52. As a result, a  compact design was obtained, easy to manufacture, which can find a variety o f applications in microwave technology. Further reduction in size is possible due to the use of higher resistance lines and a reduction in the gap between them. However, further reduction will lead to a greater decrease in the bandwidth of operating frequencies, and the characteristics obtained will increasingly differ from those of the original design.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Микрополосковая линия</kwd><kwd>двухшлейфный мост</kwd><kwd>миниатюризация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Microstrip line</kwd><kwd>branch-line coupler</kwd><kwd>miniaturization</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">Eccleston K. W., Ong S. H. M. Compact Planar Microstripline Branch-Line and Rat-Race Coupler // IEEE Trans. Microw. Theory Tech. 2003. Vol. MTT-51, № 10. P. 2119-2125.</mixed-citation><mixed-citation xml:lang="en">Eccleston K. W., Ong S. H. M. Compact Planar Microstripline Branch-Line and Rat- Race Coupler. IEEE Trans. Microw. Theory Tech. 2003, vol. 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