| 波导截止特性和衰减常数的有限差分分析 |
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| 引用本文： | 杨春艳,姚斌,郑勤红. 波导截止特性和衰减常数的有限差分分析[J]. 云南师范大学学报(自然科学版), 2005, 25(3): 35-40 |
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| 作者姓名： | 杨春艳 姚斌 郑勤红 |
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| 作者单位： | 云南师范大学物理与电子信息学院,云南,昆明,650092 |
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| 基金项目： | 国家自然科学基金(10365002)，云南自然科学基金(2001A029M)资助项目 |
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| 摘 要： | 文章提出用有限差分法计算波导截止频率、截止波数、衰减常数,推导出用有限差分法计算相关参数的计算公式,编程计算了矩行波导、L型波导和单脊型波导的TE、TM波的截止频率、截止波数及衰减常数,计算结果与解析解非常吻合,证明文章提出的计算方法是正确和可行的。
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| 关 键 词： | 有限差分法 衰减常数 截止频率 截止波数 |
| 文章编号： | 1007-9793(2005)03-0035-06 |
| 修稿时间： | 2004-09-02 |
Analysis of attenuation coefficient and cutoff character in waveguide by finite difference method |
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| YANG Chun-yan,YAO Bin,ZHENG Qin-hong. Analysis of attenuation coefficient and cutoff character in waveguide by finite difference method[J]. Journal of Yunnan Normal University (Natural Sciences Edition), 2005, 25(3): 35-40 |
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| Authors: | YANG Chun-yan YAO Bin ZHENG Qin-hong |
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| Abstract: | This paper describes the application of finite difference method for obtaining the cutoff, attenuation coefficient and cutoff wavenumbers in wavegide,gives the specific equatio- ns related to the subject. It takes rectangular wavegide, single-riged waveguide and L-shape wave- guide as examples, the numberial results agree very well with ones obtained by other methods. |
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| Keywords: | Finite difference method attenuation coefficient cutoff frequency cutoff wavenumbers |
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