| 改善效率的0.14 THz折叠波导慢波结构设计 |
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| 引用本文： | 雷文强,蒋 艺,周泉丰,胡 鹏,马国武,陈洪斌.改善效率的0.14 THz折叠波导慢波结构设计[J].太赫兹科学与电子信息学报,2017,15(4):543-547. |
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| 作者姓名： | 雷文强 蒋 艺 周泉丰 胡 鹏 马国武 陈洪斌 |
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| 作者单位： | Institute of Applied Electronics，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,Institute of Applied Electronics，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,Institute of Applied Electronics，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,Institute of Applied Electronics，China Academy of Engineering Physics，Mianyang Sichuan 621999，China,Institute of Applied Electronics，China Academy of Engineering Physics，Mianyang Sichuan 621999，China and Institute of Applied Electronics，China Academy of Engineering Physics，Mianyang Sichuan 621999，China |
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| 摘 要： | 在研究0.14 THz折叠波导行波管中，提出一种三段相速跳变的设计，使得电子能够在输出段与行波场发生速度再同步，从而提高了电子工作效率。根据色散公式，找到一种影响相速变化的结构因素。通过优化设计进行大信号程序计算，在电压14.95 kV、工作电流30 mA时，与未采用相速变化的结构相比，140 GHz时功率提高了0.84 W，效率提高了9.13%；在142 GHz时功率提高了0.88 W，效率提高了10.4%；-1 dB带宽由原来的5 GHz提高到7 GHz，扩展了行波管的带宽，提高了电子与波的互作用效率。
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| 关 键 词： | 0.14 THz折叠波导行波管 三段相速跳变 速度再同步 色散分析 大信号程序计算 |
| 收稿时间： | 2016/10/27 0:00:00 |
| 修稿时间： | 2016/11/6 0:00:00 |
Efficiency improvement design of 0.14 THz folded waveguide slow wave structure |
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| LEI Wenqiang,JIANG Yi,ZHOU Quanfeng,HU Peng,MA Guowu and CHEN Hongbing.Efficiency improvement design of 0.14 THz folded waveguide slow wave structure[J].Journal of Terahertz Science and Electronic Information Technology,2017,15(4):543-547. |
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| Authors: | LEI Wenqiang JIANG Yi ZHOU Quanfeng HU Peng MA Guowu and CHEN Hongbing |
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| Abstract: | The design of three sections phase velocity taper is put forward in 0.14 THz folded waveguide Traveling Wave Tubes(TWT) research. It can maintain beam-traveling wave velocity synchronization again in output section of interaction circuit and improve the beam operating efficiency. A structure parameter impacting on phase velocity change is found and optimized by slow wave structure dispersion equation. After optimizing design, a large signal program calculation is performed under operating voltage 14.95 kV and current 30 mA. Compared with the structure without phase velocity taper, the efficiency is improved by 9.13% in 140 GHz, and the output power in improved by 0.84 W. The efficiency is improved by 10.4% in 142 GHz, and the output power is improved by 0.88 W. -1 dB bandwidth is improved to 7 GHz from 5 GHz. The design improves the bandwidth and beam-traveling wave work efficiency in D band folded waveguide traveling wave tubes. |
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