| 一种数值求解慢波结构色散曲线的新方法 |
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| 引用本文： | 董烨,董志伟,周海京.一种数值求解慢波结构色散曲线的新方法[J].信息与电子工程,2006,4(5):331-336. |
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| 作者姓名： | 董烨 董志伟 周海京 |
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| 作者单位： | 1. 中国工程物理研究院,研究生部,北京,100088
2. 北京应用物理与计算数学研究所,北京,100088 |
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| 基金项目： | 中国工程物理研究院基金 |
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| 摘 要： | 运用场匹配法，推导出一种原则上可数值求解任意圆柱轴对称周期结构慢波波导冷腔TMon模色散曲线的方法。采用该方法编制了计算波纹波导和盘荷波导色散曲线的Matlab程序，计算结果与多维全电磁模拟软件结果的相对误差在1％之内。由于采用了数值积分算法，该方法的计算速度比传统的Bessel函数泰勒级数展开法更快。
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| 关 键 词： | 场匹配法 慢波结构 色散曲线 数值算法 |
| 文章编号： | 1672-2892(2006)05-0331-06 |
| 收稿时间： | 2006-04-13 |
| 修稿时间： | 2006-05-27 |
New Numerical Method of Computing Dispersion Curves in SWS |
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| DONG Ye,DONG Zhi-wei,ZHOU Hai-jing.New Numerical Method of Computing Dispersion Curves in SWS[J].information and electronic engineering,2006,4(5):331-336. |
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| Authors: | DONG Ye DONG Zhi-wei ZHOU Hai-jing |
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| Affiliation: | 1. Graduate School of China Academy of Engineering Physics, Beijing 100088, China; 2. Beijing Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
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| Abstract: | This article put forward a new numerical method which has a strong applicability and expansibility in numerical computing TM0n dispersion curves in arbitrary axial symmetric cylindrical periodic SWS(Slow-Wave Structure) by using Field-Matching Method.The dispersion curves of a sinusoidal ripple waveguide and a disk-loaded waveguide are computed by programming Matlab codes.The numerical results are with relative errors about 1% compared with the simulated results of multidimensional full electromagnetic software.This new numerical method has a faster computation speed than a traditional method in which Bessel function is expanded into Taylor series when computing dispersion curves in a sinusoidal ripple waveguide,because of using numerical integral method. |
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| Keywords: | field-matching method SWS(Slow-Wave Structure) dispersion curves numerical method |
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