| FDTD中波导激励源研究 |
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| 引用本文： | 尹家贤,刘克成,刘培国,毛钧杰. FDTD中波导激励源研究[J]. 国防科技大学学报, 2001, 23(2): 99-102 |
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| 作者姓名： | 尹家贤 刘克成 刘培国 毛钧杰 |
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| 作者单位： | 国防科技大学电子科学与工程学院, |
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| 摘 要： | :FDTD已广泛应用于波导问题的计算 ,本文首先讨论Gaussian脉冲在波导中传输时的波形变化情况 ,然后根据波导的色散特性 ,提出一种调制的脉冲波作为波导入射波的激励源 ,给出了脉冲宽度与调制频率的计算公式 ;讨论在脉冲激励的条件下入射场的计算方法 ,总场 /反射场的连接方法 ;最后给出计算实例证明方法的有效性
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| 关 键 词： | FDTD 波导不连续性 |
| 文章编号： | 1001-2486(2001)02-0099-04 |
| 收稿时间： | 2000-10-12 |
| 修稿时间： | 2000-10-12 |
Study of Excitation Source in Waveguide Using FDTD Method |
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| YIN Jiaxian,LIU Kecheng,LIU Peiguo and MAO Junjie. Study of Excitation Source in Waveguide Using FDTD Method[J]. Journal of National University of Defense Technology, 2001, 23(2): 99-102 |
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| Authors: | YIN Jiaxian LIU Kecheng LIU Peiguo MAO Junjie |
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| Affiliation: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The finite difference time domain method (FDTD) is used to simulate propagation of Gaussian pulse in waveguide According to the dispersive characteristics of waveguide, a new modulate pulse is presented for excitation source of waveguide, and the formulations of pulse width T and modulate frequency are also given Applications of the technique are presented, and the numerical results are compared with experimental results, and the comparison shows excellent agreement over a wide frequency band |
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| Keywords: | FDTD waveguide discontinuities |
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