Study of low voltage angular log-periodic slow wave structure for 340 GHz TWT

A novel angular log-periodic groove waveguide slow wave structure (SWS) for 340 GHz traveling wave tube (TWT) is proposed in this paper. Due to the unique characteristics of log-periodic form, the novel SWS could achieve a very low operating voltage and small scale at the same time. By using the gro...

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Bibliographic Details
Published in2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) pp. 1 - 2
Main Authors Wang, Hexin, Wei, Yanyu, Gong, Yubin, Xu, Duo, Li, Xinyi, He, Tenglong, Wang, Zhanliang, Yang, Ruichao, Tang, Tao, Duan, Zhaoyun, Gong, Huarong
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2019
Subjects
Electromagnetic scattering
Electromagnetic waveguides
Electron beams
Gain
Mathematical model
Periodic structures
Power generation
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Summary:A novel angular log-periodic groove waveguide slow wave structure (SWS) for 340 GHz traveling wave tube (TWT) is proposed in this paper. Due to the unique characteristics of log-periodic form, the novel SWS could achieve a very low operating voltage and small scale at the same time. By using the groove folded waveguide, the high aspect ratio fan-shaped sheet electron beam could interact with electromagnetic wave in the groove tunnel. According to direct mathematical equation, the operating voltage is 6310 V at 340 GHz and the total length of SWS is 8.6 mm, which could get an output power of 36 W with 20.7 dB gain.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2019.8874034