基于波导模式变换的圆波导TE62模式激励器的研究

沈文渊; 王虎; 耿志辉; 杜朝海; 刘濮鲲

doi:10.7498/aps.62.238403

摘要

基于不规则波导模式匹配法以及缓变波导中电磁波模式耦合理论，研究了一种W波段圆波导TE62模式激励器. 该波导模式激励器采用矩形波导TE10模式通过侧壁耦合馈入同轴波导，利用同轴波导的选模特性激励TE61模式；随后利用轴向半径周期微扰的圆波导实现TE61–TE62模式变换. 文中推导了矩形-同轴波导模式匹配理论，系统研究了波导结构缓变参数对模式变换效率的影响，完成了模式变换器的优化仿真设计，数值计算结果表明：中心频率处TE62模式的转换效率为94.5%，纯度为98.16%，效率85%以上带宽达到1 GHz，能够满足回旋管冷测的要求.

关键词:

Abstract

In this paper, based on the theory of mode-matching and the coupled wave theory, A W-band TE62 mode generator by using waveguide mode transformation is presented. Because of the eigen-mode selection of coaxial waveguide, a TE1 mode in standard rectangular waveguide is coupled into a coaxial waveguide to excite a TE61 mode by an aperture. A transition follows on it to change the coaxial waveguide into a circular one. Finally, TE61–TE62 mode converter is achieved by using a periodic radius perturbation in circular waveguide. Calculation and analysis of the relationship between the mode conversion efficiency and structure parameters of waveguide also are finished. The validity of this study is confirmed by using electromagnetic simulation software. The conversion efficiency of TE62 mode reaches 94.5% at the center frequency 95 GHz, and the mode purity reaches 98.16% The bandwidth of the efficiency above 85% reaches 1 GHz, which can meet the demand of the high–frequency cold test of gyrotrons.

Keywords:

作者及机构信息

1.
中国科学院电子学研究所, 高功率微波源与技术重点实验室, 北京 100190;

2.
中国科学院大学, 北京 100190;

3.
北京大学信息科学技术学院, 北京 100871

基金项目: 国家自然科学基金（批准号：61072026，61072024）资助的课题.

Authors and contacts

1.
Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;

2.
University of Chinese Academy of Sciences, Beijing 100190, China;

3.
School of Electronics Engineering and Computer Science Peking University, Beijing 100871, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 61072026, 61072024).

参考文献

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施引文献

[1]	Liu P K, Xu S X 2003 Journal of Electronics and Information Technology 25 683 (in Chinese) [刘濮鲲, 徐寿喜 2003 电子与信息学报 25 683]
[2]	Dammertz G, Alberti S, Aronld A, Giguet E, LeGoff Y, Thumm M 2001 Fusion Engineering and Design. 53 561
[3]	Du C H, Xue Q Z, Liu P K 2010 Chin. Phys. B 19 048703
[4]	Sun Y Y, Zhang S C 2011 Acta Phys. Sin. 60 095201 (in Chinese) [孔艳岩, 张世昌 2011 60 095201]
[5]	Luo Y T, Tang C J, Liu C, Liu P K 2009 Acta Phys. Sin. 58 8174 (in Chinese) [罗尧天, 唐昌建, 刘畅, 刘濮鲲 2009 58 8174]
[6]	Jory H, Wagner D, Blank M, Chu S, Felch K 2001 Int. Journal of Infrared and Millimeter Waves. 22 1395
[7]	Alexandrov N L, Chirkov A V, Denisov G G, Vinogradov D V, Kasparek W, Pretterebner J, Wagner D 1992 Int. Journal of Infrared and Millimeter Waves. 13 1369
[8]	Li S F, Zhang C H, Wang Z, Chen H B, Hu L L, Pan W W, Guo F 2011 High Power Laser and Particle Beams 23 2174 (in Chinese) [李少甫, 张从会, 王忠, 陈洪斌, 胡林林, 潘文武, 郭峰 2011 强激光与粒子束 23 2174]
[9]	Alexandrov N L, Denisov G G, Whaley D R, Tran M Q 1995 Int. Journal of Electronics 79 215
[10]	Wang B, Liu P K, Geng Z H 2010 J. Infrared Millim. Wave 29 109 (in Chinese) [王斌, 刘濮鲲, 耿志辉 2010 红外与毫米波学报 29 109]
[11]	Wang B, Du C H, Liu P K, Geng Z H, Xu S X 2010 Acta Phys. Sin. 59 2512 (in Chinese) [王斌, 杜朝海, 刘濮鲲, 耿志辉, 徐寿喜 2010 59 2512]
[12]	Marek E, Bialkowski J, Bornemann V, Waris P, Paul W D 1995 IEEE. Trans. Microw. Theory Tech. 43 1875
[13]	McCurdy A H, Choi J J 1999 IEEE. Trans. Microw. Theory Tech. 47 164
[14]	Wang W X, Gong Y B, Yu G F, Yue L N, Sun J H 2003 IEEE. Trans. Microw. Theory Tech. 51 55
[15]	Chang T H, Li C H, Wu C N, Yu C F 2010 IEEE. Trans. Microw. Theory Tech. 58 1543
[16]	Peng W, Liu P K, Geng Z H 2010 Vacuum Electronics 5 1 (in Chinese) [彭伟, 刘濮鲲, 耿志辉 2010 真空电子技术 5 1]
[17]	Yang S W, Tan S H, Li H F 2000 Int. Journal of Infrared and Millimeter Waves, 21 219
[18]	Li H F, Thumm M 1991 Int. Journal of Electronics 71 827
[19]	Lan F, Yang Z Q, Shi Z J 2012 Acta Phys. Sin. 61 155 (in Chinese) [兰峰, 杨梓强, 史宗君 2012 61 155]
[20]	Du R B, Luo Y, Niu X J 2008 High Power Laser and Particle Beams 20 99 (in Chinese) [杜人波, 罗勇, 牛新建 2008 强激光与粒子束 20 99]
[21]	Niu X J, Li H F, Yu S, Xie Z L, Yang S W 2002 Acta Phys. Sin. 51 2291 (in Chinese) [牛新建, 李宏福, 喻胜, 谢仲怜, 杨仕文 2002 51 2291]
[22]	Yuan C W, Zhong H H, Liu Q X, Qian B L 2005 High Power Laser and Particle Beams 17 1251 (in Chinese) [袁成卫, 钟辉煌, 刘庆想, 钱保良 2005 强激光与粒子束 17 1251]
[23]	Niu X J, Gu L, Yu S, Li H F 2007 J. Infrared Millim. Wave 26 117 (in Chinese) [牛新建, 顾玲, 喻胜, 李宏福 2007 红外与毫米波学报 26 117]
[24]	Chen L W, Niu X J, Li X Y, Sun M 2004 J. Infrared Millim. Wave 23 51 (in Chinese) [陈立伟, 牛新建, 李晓燕, 孙敏 2004 红外与毫米波学报 23 51]

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