Novel Double Tunnel Staggered Grating Slow Wave Structure for 0.2 THz Traveling Wave Tube

被引：30
作者：
Lu, Zhigang [1 ]
Ding, Kesen [1 ]
Wen, Ruidong [1 ]
Ge, Weihua [1 ]
Zhu, Meiling [1 ]
Wang, Zhanliang [1 ]
Gong, Huarong [1 ]
Gong, Yubin [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China
来源：
IEEE ELECTRON DEVICE LETTERS | 2020年 / 41卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Terahertz; traveling wave tube; double tunnel staggered grating; electron efficiency; saturated power; GUIDE; BEAM; DESIGN;
D O I：
10.1109/LED.2019.2963686
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：
A novel slow wave structure (SWS), called double tunnel staggered grating (DTSG), which originates from the double staggered grating (DSG) and folded waveguide (FW), is proposed to develop a dual-beam traveling wave tube (TWT) with high power and electron efficiency in Terahertz (THz) band. Using two key techniques: (1) the rectangular holes are opened in the grating-ridges, and the operating mode is cut-off at holes; (2) specific grating-height, the DTSG-SWS possesses the wide operating band as DSG-SWS, high interaction impedance as the rectangular grating (RG) SWS, and good transmission characteristics as FW-SWS. In addition, it is not only suitable for the dual-beam TWT, but also is simple and easy of fabrication as DSG-SWS. The particle-in-cell simulation analysis confirms that the saturated power and electron efficiency of TWT using DTSG-SWS have been significantly improved compared with the TWT using DSG-SWS.
引用
收藏
页码：284 / 287
页数：4
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