| 半径渐变同轴波导模式耦合系数研究 |
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| 引用本文： | 袁成卫,钟辉煌,刘庆想,钱宝良.半径渐变同轴波导模式耦合系数研究[J].强激光与粒子束,2005,17(8):1251-1255. |
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| 作者姓名： | 袁成卫 钟辉煌 刘庆想 钱宝良 |
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| 作者单位： | 1. 国防科学技术大学 光电科学与工程学院， 湖南 长沙 410073； 2. 西南交通大学 理学院，四川 成都 610031 |
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| 基金项目： | 国家863计划项目资助课题 |
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| 摘 要： | 为了用耦合波理论研究一些同轴结构的高频特性，推导了半径渐变同轴波导内模式耦合系数的计算公式，发现半径渐变圆波导模式耦合系数只是同轴波导模式耦合系数的特例。对同轴波导中的模式及其本征方程根的特点进行了讨论，通过建立同轴波导模式和矩形波导模式之间的对应关系，给出了同轴波导模式本征方程根的快速计算方法。对所给模式耦合系数公式进行了验证，耦合波理论计算结果与有限元方法计算结果吻合良好。
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| 关 键 词： | 高功率微波 同轴波导 耦合波理论 模式耦合系数 |
| 文章编号： | 1001-4322(2005)08-1251-05 |
| 收稿时间： | 2004-11-18 |
| 修稿时间： | 2005-06-15 |
Mode coupling coefficients of the coaxial waveguide with radii changing |
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| YUAN Cheng-wei,ZHONG Hui-huang,LIU Qing-xiang,QIAN Bao-liang.Mode coupling coefficients of the coaxial waveguide with radii changing[J].High Power Laser and Particle Beams,2005,17(8):1251-1255. |
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| Authors: | YUAN Cheng-wei ZHONG Hui-huang LIU Qing-xiang QIAN Bao-liang |
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| Institution: | 1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China;2. College of Science, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | Mode coupling coefficients are the bases of coupled-wave theory (CWT). The mode coupling coefficients in coaxial waveguide with radii changes were deduced. It is revealed that the mode coupling coefficients in circular waveguide are just the special cases of those in coaxial waveguide. The coaxial waveguide modes and their eigenvalues were analyzed. The eigenvalues calculating method was obtained by constructing the corresponding relation between coaxial waveguide modes and rectangular waveguide modes. The mode coupling coefficients formulae were validated by the finite-element method (FEM). The calculation results of CWT agree well with that of FEM. |
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| Keywords: | High-power mierowave Coaxial waveguide Coupling wave theory Mode coupling coefficient |
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