Design of W-band sheet beam travelling wave tubes based on staggered double vane slow wave structure

Hanwen Tian; Wei Shao; Zhanliang Wang; Yanyu Wei; Zhaoyun Duan; Yubin Gong; Jinjun Feng

Design of W-band sheet beam travelling wave tubes based on staggered double vane slow wave structure

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Author(s): Hanwen Tian¹ ; Wei Shao¹ ; Zhanliang Wang¹ ; Yanyu Wei¹ ; Zhaoyun Duan¹ ; Yubin Gong¹ ; Jinjun Feng²
- Affiliations: 1: National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China , No. 4, Section 2, North Jianshe Road, Chengdu , People's Republic of China ;
  2: Beijing Vacuum Electronics Research Institute , Beijing , People's Republic of China
Source: Volume 2018, Issue 14, 2018, p. 698 – 703
DOI: 10.1049/joe.2018.0103 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)

Received 08/02/2018, Accepted 13/04/2018, Revised 02/03/2018, Published 02/05/2018

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.

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Design of W-band sheet beam travelling wave tubes based on staggered double vane slow wave structure

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