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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 pub-id-type="doi">10.32603/1993-8985-2022-25-5-32-41</article-id><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-675</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>Компактные полосно-пропускающие волноводные фильтры  с индуктивными связями с E-плоскостной симметрией и без E-плоскостной симметрии</article-title><trans-title-group xml:lang="en"><trans-title>Compact Bandpass Waveguide Filters with Inductive Couplings with E-plane Symmetry and without E-plane Symmetry</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7088-8373</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соркин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sorkin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соркин Александр Анатольевич – магистр по направлению "Радиотехника" (2018), аспирант</p><p>пр. Свободный, д. 79, Красноярск, 660041</p></bio><bio xml:lang="en"><p>Alexander A. Sorkin, Master in "Radio Engineering" (2018), Graduate student</p><p>79, Svobodny Ave., Krasnoyarsk 660041</p></bio><email xlink:type="simple">alexandr.sorkin.781@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>27</day><month>11</month><year>2022</year></pub-date><volume>25</volume><issue>5</issue><fpage>32</fpage><lpage>41</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Соркин А.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Соркин А.А.</copyright-holder><copyright-holder xml:lang="en">Sorkin A.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/675">https://re.eltech.ru/jour/article/view/675</self-uri><abstract><sec><title>Введение</title><p>Введение. В современных спутниковых системах связи к частотным и массогабаритным характеристикам входных фильтров предъявляются все более жесткие требования. Исходя из этого, рассмотрены конструкции полосовых фильтров с индуктивными связями на гофрированных волноводах. Несмотря на то что подобные фильтры были описаны ранее, в данной статье рассмотрены возможные реализации таких фильтров на волноводе зауженного сечения, на структурах с симметрией и без симметрии по электрическому полю.</p></sec><sec><title>Цель работы</title><p>Цель работы. Исследование фильтров с индуктивными связями с симметрией и без симметрии по электрическому полю, а также оценка полосы заграждения по уровню и ширине полосы.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Численные исследования проведены методом конечных элементов и методом конечных разностей во временной области.</p></sec><sec><title>Результаты</title><p>Результаты. Проведено моделирование фильтров с индуктивными связями с симметрией и без симметрии по электрическому полю. Установлено, что фильтры без симметрии по электрическому полю имеют лучшие массогабаритные характеристики, но более узкую полосу заграждения. С помощью моделирования также установлено, что в фильтрах со шлейфами одинакового сечения уровень заграждения больше почти на 20 дБ по сравнению с фильтрами, в которых шлейфы имеют разное сечение. Частотные характеристики фильтров с индуктивными связями, полученные путем электродинамического моделирования, совпадают с характеристиками, полученными экспериментально. Проведено моделирование десятизвенного сверхкомпактного фильтра с индуктивными связями без симметрии по электрическому полю, потери в полосе пропускания не более 0.7 дБ, уровень заграждения в полосе частот от 7.9 до 8.4 ГГц не менее 80 дБ, длина фильтра 30 мм.</p></sec><sec><title>Заключение</title><p>Заключение. Применение фильтров с индуктивными связями позволяет существенно улучшить массогабаритные характеристики без ухудшения потерь в полосе пропускания и сохранении высокого уровня ослабления в полосе заграждения.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Modern satellite communication systems continue to impose stricter requirements on the frequency response, weight, and size of filters. In this paper, several designs of bandpass filters with inductive couplings on corrugated waveguides are considered. Although such filters have been described previously, this paper considers their possible implementations based on narrow cross-section waveguides, as well as on structures with and without electric field symmetry.</p></sec><sec><title>Aim</title><p>Aim. To study filters with inductive couplings with and without electric field symmetry, as well as to assess the filter stopband width and attenuation.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Numerical studies were carried out by the finite element method (FEM) and the method of final difference in the time domain (FDTD).</p></sec><sec><title>Results</title><p>Results. Modeling of filters with inductive couplings with and without electric field symmetry was carried out. Filters without electric field symmetry were found to exhibit higher characteristics in terms of weight and size, at the same time as having a narrower stopband. The conducted modeling also showed that filters with stubs of the same cross section allow stopband attenuation to be improved by almost 20 dB compared to filters with stubs of varied cross section. The frequency responses of filters with inductive couplings obtained by electrodynamic modeling were established to agree well with those obtained experimentally. A ten-order ultra-compact filter with inductive couplings without electric field symmetry was considered, with the bandwidth loss of not more than 0.7 dB, the attenuation of at least 80 dB in the frequency range from 7.9 to 8.4 GHz, and the filter length of 30 mm.</p></sec><sec><title>Conclusion</title><p>Conclusion. The use of filters with inductive couplings allows their mass and dimension characteristics to be significantly improved without increasing losses in the bandwidth at the same time as maintaining a high level of attenuation in the stopband.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>фильтр с индуктивными связями</kwd><kwd>полюс затухания</kwd><kwd>шлейф</kwd><kwd>симметричная емкостная диафрагма</kwd><kwd>несимметричная емкостная диафрагма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>inductive coupling filter</kwd><kwd>attenuation pole</kwd><kwd>stub</kwd><kwd>symmetrical capacitive iris</kwd><kwd>asymmetrical capacitive iris</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке КГАУ "Красноярский краевой фонд поддержки научной и научно-технической деятельности", заявка № 2022030108251.</funding-statement><funding-statement xml:lang="en">The reported study was funded by Krasnoyarsk regional science foundation, project no. 2022030108251.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Design of waveguide filters with cascaded singlets through a synthesis-based approach / G. 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