Experimental Investigation of a Shape-Optimized Staggered Double-Vane Slow-Wave Structure for Terahertz Traveling-Wave Tubes

被引：15
|
作者：
Jiang, Shengkun [1 ]
Yang, Guang [2 ]
Wang, Zhanliang [1 ]
Wang, Xin [1 ]
Zhang, Xuanming [1 ]
Lyu, Zhifang [1 ]
Tang, Tao [1 ]
Gong, Huarong [1 ]
Gong, Yubin [1 ]
Duan, Zhaoyun [1 ]
机构：
[1] Univ Elect Sci & Technol China UESTC, Sch Elect Sci & Engn, Natl Key Lab Sci & Technol Vacuum Elect Chengdu, Chengdu 611731, Peoples R China
[2] Nanjing Sanle Grp Co Ltd, Nanjing 211800, Peoples R China
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2022年 / 69卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Impedance; Power generation; Dispersion; Surface impedance; Propagation losses; Phase change materials; Focusing; Cold test; shape-optimized staggered double-vane slow-wave structure (SWS); sheet beam; terahertz (THz); traveling-wave tube (TWT); SHEET ELECTRON-BEAM; HIGH-POWER; AMPLIFIER; DESIGN;
D O I：
10.1109/TED.2022.3182639
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Enormous concerns focus on the high-power and wide bandwidth traveling-wave tube (TWT) for its outstanding performance. In this article, a shape-optimized staggered double-vane slow-wave structure (SWS) for terahertz (THz) sheet beam TWT is proposed. The shape-optimized staggered double-vane SWS takes the advantages of higher interaction impedance, lower transmission loss, and lower phase velocity than conventional staggered double-vane SWSs. The shape-optimized staggered double-vane SWS with 85 periods is designed, fabricated, and cold tested. The measured transmission loss of the shape-optimized staggered double-vane SWS is less than 0.79 dB/cm in the frequency range of 0.211-0.26 THz, which is in good agreement with the simulation results. Furthermore, the beam-wave interaction analysis of a sheet beam TWT with this SWS is given. The output power is predicted to be >100 W with 3-dB bandwidth of >50 GHz. The results show that the shape-optimized staggered double-vane SWS is a very promising scheme to construct a high-power and wideband THz TWT for future applications such as communication and imaging.
引用
收藏
页码：4632 / 4637
页数：6
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