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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">kaz44</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Университета Шакарима. Серия технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Shakarim University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2788-7995</issn><issn pub-type="epub">3006-0524</issn><publisher><publisher-name>«Шәкәрім университеті» КеАҚ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.53360/2788-7995-2026-1(21)-1</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz44-2152</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>АВТОМАТИЗАЦИЯ И ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ (ОРИГИНАЛЬНАЯ СТАТЬЯ)</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>AUTOMATION AND INFORMATION TECHNOLOGY (ORIGINAL ARTICLE)</subject></subj-group></article-categories><title-group><article-title>АНАЛИЗ ЭФФЕКТИВНОСТИ РАБОТЫ УСИЛИТЕЛЯ МОЩНОСТИ, РАБОТАЮЩЕГО В ТОКОВОМ РЕЖИМЕ В СИСТЕМАХ МОБИЛЬНОЙ СВЯЗИ 5G</article-title><trans-title-group xml:lang="en"><trans-title>ANALYSIS OF THE OPERATING EFFICIENCY OF A POWER AMPLIFIER OPERATING IN CURRENT MODE IN 5G MOBILE SYSTEMS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0409-1531</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хабай</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khabay</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анар Хабай – PhD, ассоциированный профессор кафедры «Электроники, телекоммуникации и космических технологий» </p><p>050013, г. Алматы, ул. Сатпаева, 22а;050013, г. Алматы, ул. Толе би, 100</p></bio><bio xml:lang="en"><p>Anar Khabai – PhD, Associate Professor of the Department of Electronics, Telecommunications and Space Technologies </p><p>050013, Almaty, Satpayev Street, 22a;050013, Almaty, Tole Bi Street, 100</p></bio><email xlink:type="simple">a.khabay@satbayev.university</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9146-7137</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тулешов</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tuleshov</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Еркебулан Амандыкович Тулешов – кандидат технических наук, ассоциированный профессор кафедры «Робототехники и технических средств автоматики» </p><p>050013, г. Алматы, ул. Сатпаева, 22а</p></bio><bio xml:lang="en"><p>Yerkebulan Tuleshov– Candidate of Technical Sciences, Associate Professor of the Department of Robotics and Engineering Tools of Automation </p><p>050013, Almaty, Satpayev Street, 22a</p></bio><email xlink:type="simple">y.tuleshov@satbayev.university</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-3383-7040</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тұрар</surname><given-names>Н. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Turar</surname><given-names>N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нурлыбек Турдыбекулы Турар – магистрант 1-го курса кафедры «Электроники, телекоммуникации и космических технологий» </p><p>050013, г. Алматы, ул. Сатпаева, 22а</p></bio><bio xml:lang="en"><p>Nurlybek Turar – Master's student at the Department of Electronics, Telecommunications and Space Technologies </p><p>050013, Almaty, Satpayev Street, 22a</p></bio><email xlink:type="simple">nurlybek.turar.01@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2900-8025</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исабеков</surname><given-names>Ж. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Issabekov</surname><given-names>Zh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жанибек Назарбекулы Исабеков – PhD, ассоциированный профессор кафедры «Робототехники и технических средств автоматики» </p><p>050013, г. Алматы, ул. Сатпаева, 22а</p></bio><bio xml:lang="en"><p>Zhanibek Issabekov – PhD, Associate Professor of the Department of Robotics and Engineering Tools of Automation </p><p>050013, Almaty, Satpayev Street, 22a</p></bio><email xlink:type="simple">z.issabekov@satbayev.university</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9162-6791</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Назырова</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Nazyrova</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Айжан Есболовна Назырова – PhD, старший преподаватель кафедры «Технологий искусственного интеллекта» </p><p>10000, г. Астана, ул. Сатпаева, 2</p></bio><bio xml:lang="en"><p>Aizhan Nazyrova – PhD, Senior Lecturer at the Department of Artificial Intelligence Technologies </p><p>10000, Astana, Satpayev str., 2</p></bio><email xlink:type="simple">nazyrova_aye_1@enu.kz</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Satbayev University;&#13;
Алматинский технологический университет</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Satbayev University;&#13;
Almaty Technological University</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Satbayev University</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Satbayev University</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Евразийский национальный университет им. Л.Н. Гумилева</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>L.N. Gumilyov Eurasian National University</institution><country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>25</day><month>05</month><year>2026</year></pub-date><volume>1</volume><issue>1(21)</issue><fpage>6</fpage><lpage>14</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хабай А., Тулешов Е.А., Тұрар Н.Т., Исабеков Ж.Н., Назырова А.Е., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Хабай А., Тулешов Е.А., Тұрар Н.Т., Исабеков Ж.Н., Назырова А.Е.</copyright-holder><copyright-holder xml:lang="en">Khabay A., Tuleshov E., Turar N., Issabekov Z., Nazyrova 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://tech.vestnik.shakarim.kz/jour/article/view/2152">https://tech.vestnik.shakarim.kz/jour/article/view/2152</self-uri><abstract><p>В данной статье рассматриваются принцип работы, энергетическая эффективность и частотно-зависимые характеристики усилителя мощности класса D в токовом режиме (CMCD), предназначенного для применения в диапазоне 5G FR1 (ниже 6 ГГц), в частности в полосе 3,4-3,8 ГГц. Усилитель основан на классической push-pull CMCD-архитектуре, работающей в коммутационном режиме, и демонстрирует возможность достижения высокой теоретической эффективности за счёт уменьшения коммутационных потерь благодаря минимизации временного перекрытия токовых и напряженческих форм сигналов. В ходе анализа исследованы пиковое значение напряжения стока, формы токовых и напряженческих сигналов, условия нагрузки и частотно-зависимые параметры. Результаты моделирования показали, что усилитель стабильно работает в диапазоне 3,4-3,8 ГГц, при этом с ростом частоты наблюдается тенденция к снижению коэффициента усиления и эффективности. Данное явление объясняется увеличением коммутационных потерь транзисторов и влиянием паразитных параметров пассивных элементов. Полученные результаты подтверждают, что усилитель мощности CMCD применим в мобильных системах связи 5G FR1, особенно в области 3,5 ГГц, а в дальнейшем практическую точность можно повысить за счёт использования реалистичных RF-моделей транзисторов (LDMOS/GaN/CMOS) и учёта паразитных параметров.</p></abstract><trans-abstract xml:lang="en"><p>This paper investigates the operating principle, energy efficiency, and frequency-dependent characteristics of a current-mode class-D power amplifier (CMCD) intended for 5G FR1 (sub-6 GHz, below 6 GHz) applications, specifically within the 3.4-3.8 GHz band. The amplifier is based on a classical push-pull CMCD architecture operating in switching mode and demonstrates the potential for high theoretical efficiency by reducing switching losses through minimizing the temporal overlap between current and voltage waveforms. The analysis examines the peak drain voltage, current and voltage waveforms, load conditions, and frequency-dependent parameters. Simulation results show stable operation across 3.4-3.8 GHz, while indicating a decreasing trend in gain and efficiency as frequency increases. This behavior is attributed to increased transistor switching losses and the impact of parasitic parameters of passive components. The results confirm that the CMCD power amplifier is suitable for 5G FR1 mobile communication systems, particularly around 3.5 GHz, and that practical accuracy can be further improved by employing realistic RF transistor models (LDMOS/GaN/CMOS) and explicitly accounting for parasitic effects</p></trans-abstract><kwd-group xml:lang="ru"><kwd>CMCD</kwd><kwd>5G FR1</kwd><kwd>push-pull архитектура</kwd><kwd>радиочастотный дроссель (RFC)</kwd><kwd>коммутационные потери</kwd><kwd>пиковое напряжение стока</kwd><kwd>RF-моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>CMCD</kwd><kwd>5G FR1</kwd><kwd>push-pull architecture</kwd><kwd>radio-frequency choke (RFC)</kwd><kwd>switching losses</kwd><kwd>drain peak voltage</kwd><kwd>RF simulation</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">Bandwidth Enhancement of Догерти Power Amplifier Using Modified Load Modulation Network / М. 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