| THz返波管圆波导梳状慢波结构的研究 |
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| 引用本文： | 王自成,陆德坚,王莉,李海强,张世杰,徐安玉,郝保良,宋培德,戴志浩.THz返波管圆波导梳状慢波结构的研究[J].电子与信息学报,2008,30(11):2792-2794. |
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| 作者姓名： | 王自成 陆德坚 王莉 李海强 张世杰 徐安玉 郝保良 宋培德 戴志浩 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100190
2. 中国科学院电子学研究所,北京,100190;中国科学院研究生院,北京,100039 |
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| 摘 要： | 该文利用三维电磁仿真软件模拟计算了THz圆波导梳状慢波结构的负1次返波的色散和耦合阻抗.结果证实:在430-570GHz频带内,慢波结构内半径为0.175mm,约为中心频率波长的0.292倍;在760-940GHz的频带内,慢波结构内半径为0.1mm,是中心频率处波长的0.392倍.该结构较大的径向尺寸有利于提高电子注通过率.这种结构负1次返波的耦合阻抗较小,基本上小于1,很好解释了现有THz返波管的电子效率小于0.01%的事实.
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| 关 键 词： | 返波管 太赫兹 圆波导梳状慢波结构 色散 耦合阻抗 |
| 收稿时间： | 2007-5-25 |
| 修稿时间： | 2008-4-28 |
Investigation of Circular Comb Slow-Wave Structure of THz Backward-Wave Oscillators |
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| Wang Zi-cheng,Lu De-jian,Wang Li,Li Hai-qiang,Zhang Shi-jie,Xu An-yu,Hao Bao-liang,Song Pei-de,Dai Zhi-hao.Investigation of Circular Comb Slow-Wave Structure of THz Backward-Wave Oscillators[J].Journal of Electronics & Information Technology,2008,30(11):2792-2794. |
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| Authors: | Wang Zi-cheng Lu De-jian Wang Li Li Hai-qiang Zhang Shi-jie Xu An-yu Hao Bao-liang Song Pei-de Dai Zhi-hao |
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| Affiliation: | (Institute of Electronics, Chinese Academy of Science, Beijing 100190, China) (Graduate University of Chinese Academy of Science, Beijing 100039, China) |
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| Abstract: | 3-D electromagnetic simulation software is used to calculate the dispersion and interaction impedance of circular comb Slow-Wave Structure (SWS) which works for Terahertz (THz) Backward-wave Oscillators (BWO). The results show that the inner radius of SWS is 0.175mm in the band of 430-570GHz, and the inner radius of SWS is 0.1mm in the band of 760-940GHz. The large radius of SWS is a great help for improving beam transmission. The interaction impedance of fundamental backward wave of the SWS is smaller than 1 is a good explain to the truth that the electronic efficiency of THz BWO is smaller than 0.01%. |
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| Keywords: | Backward-Wave Oscillations (BWO) Terahertz Slow-Wave Structure (SWS) Dispersion Interaction impedance |
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