| 用FDTD法分析填充介质金属同轴线的截止频率 |
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| 引用本文： | 林福明,郑勤红,姚斌,王建敏,李升辉,胥万松,李琳. 用FDTD法分析填充介质金属同轴线的截止频率[J]. 云南师范大学学报(自然科学版), 2011, 31(1): 59-62 |
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| 作者姓名： | 林福明 郑勤红 姚斌 王建敏 李升辉 胥万松 李琳 |
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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： | 国家自然科学基金重点项目资助(50734007) |
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| 摘 要： | 给出柱坐标系下二维时域有限差分法(FDTD)的差分离散格式。利用FDTD法实例计算了空心金属同轴线TE波的归一化截止频率,并与理论值进行比较;计算了径向填充圆环形介质和角向填充扇形介质同轴线的归一化截止波数,获得了径向填充圆环形介质同轴线时各阶TE模归一化截止波数的曲线图;分析了角向填充扇形介质对同轴线归一化截止波数的影响。
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| 关 键 词： | FDTD 同轴线 归一化截止波数 |
FDTD Method Analysis of the Cut-off Frequency of Metal Coaxial Line Filled with Dielectric |
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| LIN Fu-ming,ZHENG Qin-hong,YAO Bin,WANG Jian-min,LI Sheng-hui,XU Wan-song,LI Lin. FDTD Method Analysis of the Cut-off Frequency of Metal Coaxial Line Filled with Dielectric[J]. Journal of Yunnan Normal University (Natural Sciences Edition), 2011, 31(1): 59-62 |
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| Authors: | LIN Fu-ming ZHENG Qin-hong YAO Bin WANG Jian-min LI Sheng-hui XU Wan-song LI Lin |
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| Affiliation: | LIN Fu-ming,ZHENG Qin-hong,YAO Bin,WANG Jian-min,LI Sheng-hui,XU Wan-song,LI Lin(School of Physics and Electronic Information,Yunnan Normal University,Kunming 650092,China) |
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| Abstract: | This paper presents the difference expression of 2D-FDTD in cylindrical coordinate system.In order to demonstrate the availability of the method,the cut-off frequency of hollow metal coaxial line is calculated,and a comparison is given.Using the same program,the normalized cut-off wavenumber of TE-mode of the coaxial line filled with the dielectric ring is calculated,and the curve graphs are presented.At last,the cut-off frequency of coaxial line filled with sector dielectric is calculated and discussed. |
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| Keywords: | finite-difference time-domain coaxial line normalized cut-off wavenumber |
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