Design of W‐band sheet beam travelling wave tubes based on staggered double vane slow wave structure. Issue 14 (13th June 2018)

• Record Type: Journal Article
• Authors: Tian, Hanwen; Shao, Wei; Wang, Zhanliang; Wei, Yanyu; Duan, Zhaoyun; Gong, Yubin; Feng, Jinjun
• Is Part Of: Journal of engineering. Volume 2018:Issue 14(2018)
• Page Start: 698
• Page End: 703
• Publication Date: 2018-06-13
• Subjects: electron beams -- slow wave structures; staggered double vane slow wave structure -- sheet electron beam gun -- magnetic focusing system -- beam–wave interaction -- W‐band sheet beam travelling wave tubes -- dispersion characteristics -- transposition characteristics -- high‐frequency system -- vacuum window -- periodically cusped magnetic focusing system -- CST Microwave Studio -- CST Particle Studio -- HFSS -- phase velocity taper -- power 10.0 W -- power 1100.0 W -- frequency 95.0 GHz -- power 1200.0 W -- frequency 99.0 GHz -- voltage 20.6 kV -- current 80.0 mA -- gain 20.41 dB; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2018.0103
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : In this study, a complete and viable plan about a W‐band sheet beam travelling wave tube based on a staggered double vane slow wave structure is drawn up. The dispersion characteristics, transposition characteristics of high‐frequency system, sheet electron beam gun, vacuum window, periodically cusped magnetic focusing system and beam–wave interaction are analysed by CST Microwave Studio, CST Particle Studio and HFSS. An attenuator is used in this device to suppress oscillation. A phase velocity taper is used to increase output power. The operation voltage is 20.6 kV and the current is 80 mA. With a 10 W input power, the output power is 1100 W versus the gain is 20.41 dB at 95 GHz. The peak amplitude approaches 1200 W versus the gain approaches 20.79 dB at 99 GHz.