| 9.4 GHz过模光滑壁TE11HE11模式变换器设计 |
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| 引用本文： | 徐刚,余川,李正红,廖勇,谢平.9.4 GHz过模光滑壁TE11HE11模式变换器设计[J].强激光与粒子束,2013,25(2):394-398. |
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| 作者姓名： | 徐刚 余川 李正红 廖勇 谢平 |
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| 作者单位： | 1.中国工程物理研究院 应用电子学研究所, 高功率微波技术重点实验室, 四川 绵阳 621 900 |
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| 基金项目： | 国家高技术发展计划项目 |
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| 摘 要： | 采用半径微扰的光滑壁圆波导产生HE11模，避免了常规微波领域中采用的波纹渐变转换器在高功率微波领域应用时易发生齿间打火的不足。采用基于模式耦合理论的迭代综合方法优化了不规则的半径渐变轮廓，使输出产生组成HE11模的混合模式。并通过全电磁波仿真软件进行了对比, 输出波束标量高斯含量在9.1~9.7 GHz范围内均高于99.5%，功率容量4.9 GW。
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| 关 键 词： | 高功率微波 准高斯模式 模式耦合理论 迭代综合 模式变换器 |
| 收稿时间： | 2012/5/30 |
Design of a 9.4 GHz over moded smooth wall TE11 HE11 converter |
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| Xu Gang,Yu Chuan,Li Zhenghong,Liao Yong,Xie Ping.Design of a 9.4 GHz over moded smooth wall TE11 HE11 converter[J].High Power Laser and Particle Beams,2013,25(2):394-398. |
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| Authors: | Xu Gang Yu Chuan Li Zhenghong Liao Yong Xie Ping |
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| Institution: | 1.Key Laboratory of High Power Microwave Technology,Institute of Applied Electronics,CAEP,P.O.Box 919-1015,Mianyang 621900,China |
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| Abstract: | High power microwave(HPM) sources usually employ overmoded output waveguide to obtain higher power capacity. In designing feeder of beam waveguide and reflect antenna, TE11 mode needs to be convert to HE11 mode to radiate a quasi Gaussian beam with quite low side lobe. RF breakdown will occur in corrugate gap when traditional corrugated TE11 HE11 mode converter is used in HPM field. In order to solve this problem, a method to design over moded smooth wall TE11 HE11 converter was investigated. Using an iterative synthesis method based on coupled mode theory, a 9.4 GHz, 70 mm over moded smooth wall TE11 HE11 converter was designed, and contrast to electro magnetic simulation result, the scalar Gauss ratio of the output beam is higher than 99.5% from 9.1 GHz to 9.7 GHz, the power capacity is as high as 4.9 GW. |
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| Keywords: | high power microwave quasi Gauss mode coupled mode theory iterative synthesis mode converter |
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