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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2025, № 11 · RADIO ENGINEERING

Coupled-line transdirectional couplers and microwave circuits based on them. Review

A.N. Sychev1, S.A. Artshchev1, N.S. Trufanova1, N.Y. Rudy1

1 Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
Full text DOI: 10.30898/1684-1719.2025.11.35 UDC 621.372 EDN XLIARG

Abstract

The article presents the current state of research and development of directional couplers built on coupled lines with the transverse directivity effect, which have not received enough attention in domestic research to date. The use of transdirectional (TRD) couplers in the design of microwave circuits leads to new circuitry and original design and technological solutions. The considered applications include both microwave devices and beamforming circuits and their components. The classification of TRD couplers presented according to various criteria reflects their features, and above all, the galvanic isolation of the input port and a pair of output ports. The review reflects the current level of technology and reveals little-studied areas of research that are useful in creating new solutions for directional couplers on coupled lines and creating microwave devices based on them with unique characteristics.

  • trans-directional coupler
  • coupled lines
  • coupling coefficient
  • transformation coefficient
Аннотация (на русском)

Поперечно-направленные ответвители на связанных линиях и СВЧ устройства на их основе. Обзор

Представлено современное состояние исследований и разработок направленных ответвителей, построенных на связанных линиях с эффектом поперечной направленности, которым в отечественных исследованиях до настоящего времени уделялось недостаточно внимания. Использование поперечно-направленных ответвителей (ПоНО) в проектировании СВЧ устройств приводит к новой схемотехнике и оригинальным конструкторско-технологическим решениям. Рассмотренные приложения включают как СВЧ устройства, так и диаграммообразующие схемы и их компоненты. Представленная по различным критериям классификация ПоНО, отражает их особенности, и прежде всего - гальваническую развязку входного порта и пары выходных. Обзор отражает современный уровень техники и раскрывает малоисследованные направления поиска, полезные при создании новых решений направленных ответвителей на связанных линиях и создании СВЧ-устройств на их основе с уникальными характеристиками.

For citation

Sychev A.N., Artshchev S.A., Trufanova N.S., Rudy N.Y. Coupled-line transdirectional couplers and microwave circuits based on them. Review // Journal of Radio Electronics. – 2025. – No. 11. https://doi.org/10.30898/1684-1719.2025.11.35

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