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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2017, № 12 · PHYSICAL PROBLEMS OF ELECTRONICS

Modern electron sources for TWTs in millimeter and submillimeter ranges

T.M. Krachkovskaya1,2,3,4,5, G.V. Sahadji3,4,5, S.D. Zhuravlev1,2,3,4,5

1 Саратовский государственный технический университет им. Гагарина Ю.А, Russia
2 Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., Saratov, 410054, Russia, Russia
3 АО «НПП «Алмаз», 410033, г. Саратов, Russia
4 JSC "R&amp
5 D enterprise "Almaz", 1 Panfilova St., Saratov, 410033, Russia, Russia
Full text (PDF) UDC 621.385.032 EDN VUWHTF

Abstract

The paper presents the state of development of electron sources used in traveling wave tubes (TWT). Main achievements in the field of manufacturing technology of metal porous cathodes, matrix field emission cathodes, scandium cathodes, metal-alloy cathodes are described. Modern level of emission parameters, reliability and durability of such cathodes are considered. Actual problems for developments of electron sources for TWTs in millimeter and submillimetric ranges are discussed. Moreover, traditional emissive materials and the newest cathode materials based on carbon nanoclusters are described. Conclusions are made about further ways of developing the technology for manufacturing metal porous cathodes used nanocarbon.

  • metal porous cathodes
  • matrix field emission cathodes
  • scandium cathodes
  • Metal-alloy cathodes
  • Nanocarbon material
Аннотация (на русском)

Современные источники электронов для ламп бегущей волны миллиметрового и субмиллиметрового диапазонов

Представлено современное состояние разработок источников электронов, применяемых в лампах бегущей волны (ЛБВ). Описаны основные достижения в области технологии изготовления металлопористых, скандиевых, металлосплавных и матричных автоэмиссионных катодов. Рассмотрен современный уровень эмиссионных параметров и долговечности таких катодов. Обсуждаются проблемы, которые стоят перед разработчиками источников электронов для приборов миллиметрового и субмиллиметрового диапазонов. Кроме того, описываются традиционные эмиссионные материалы и новейшие катодные материалы на основе углеродных нанокластеров. Сделаны выводы о дальнейших путях развития технологии изготовления металлопористых катодов с использованием наноуглерода.

For citation

Krachkovskaya T.M., Sahadji G.V., Zhuravlev S.D. Modern electron sources for TWTs in millimeter and submillimeter ranges // Journal of Radio Electronics. – 2017. – No. 12.

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