Investigation of a Modified Flat-Roofed Sine Waveguide Slow-Wave Structure for Wideband 220-GHz TWT

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Microwave and Wireless Components Letters Pub Date : 2022-12-01 DOI:10.1109/LMWC.2022.3193447

Jian Zhang, Xuebing Jiang, Jin Xu, Lingna Yue, H. Yin, Shuangzhu Fang, R. Yang, P.C. Yin, Jinchi Cai, G. Zhao, Wenxiang Wang, Zhenhua Wu, Dazhi Li, Wenxin Liu, Minzhi Huang, Yanyu Wei

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Abstract

In this letter, the modified flat-roofed sine waveguide slow-wave structure (FRSWG-SWS) is proposed for the wideband high-power sub-terahertz traveling-wave tube (sub-THz TWT), which possesses the advantages of wide operating bandwidth, low loss, minimal reflection, and ease of fabrication. The simulation results demonstrate that the transmission parameter is more than −5.0 dB in the frequency range between 210 and 250 GHz. The beam–wave interaction results indicate that the modified FRSWG can provide over 50 W of output power and 30 dB of gain from 205 to 250 GHz with sheet electron beam with a voltage of 20.8 kV and a current of 150 mA. Finally, we use high-speed milling to fabricate the modified FRSWG by the nano-Computer Numerical Control (CNC) technology. The cold test results demonstrate that the modified FRSWG has low loss and good reflection characteristics.

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宽带220-GHz行波管改进平顶正弦波波导慢波结构研究

本文提出了一种用于亚太赫兹行波管(sub-THz TWT)的改进平顶正弦波波导慢波结构(FRSWG-SWS)，该结构具有工作带宽宽、损耗低、反射最小、易于制造等优点。仿真结果表明，在210 ~ 250 GHz频率范围内，传输参数大于- 5.0 dB。波束相互作用结果表明，在205 ~ 250 GHz范围内，在电压为20.8 kV、电流为150 mA的片状电子束下，改进后的FRSWG可提供超过50 W的输出功率和30 dB的增益。最后，利用高速铣削技术，利用纳米计算机数控(CNC)技术制备了改性的FRSWG。冷试验结果表明，改进后的FRSWG具有低损耗和良好的反射特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Microwave and Wireless Components Letters 工程技术-工程：电子与电气

自引率

13.30%

发文量

376

审稿时长

3.0 months

期刊介绍： The IEEE Microwave and Wireless Components Letters (MWCL) publishes four-page papers (3 pages of text + up to 1 page of references) that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, medical and industrial activities. Microwave theory and techniques relates to electromagnetic waves in the frequency range of a few MHz and a THz; other spectral regions and wave types are included within the scope of the MWCL whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.