| 超宽带电磁脉冲对腔体孔缝耦合效应的数值模拟 |
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| 引用本文： | 肖金石,刘文化,张世英,张金华.超宽带电磁脉冲对腔体孔缝耦合效应的数值模拟[J].强激光与粒子束,2010,22(12). |
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| 作者姓名： | 肖金石 刘文化 张世英 张金华 |
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| 作者单位： | 1. 海军工程大学 电子工程学院, 武汉 430033；2. 海军装备研究院, 北京 100161 |
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| 基金项目： | 国家高技术发展计划项目 |
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| 摘 要： | 为了解孔缝耦合对超宽带电磁脉冲干扰和毁伤电子设备的影响，应用时域有限差分法对长方腔体上不同形状的孔缝耦合效应进行了数值研究。选取mm量级的微小孔缝为研究对象，分析不同入射角度、不同脉宽的激励源对耦合效应的影响，得到了孔腔共振效应、孔缝增强效应和腔体内场强的分布规律。研究表明：长方孔在孔缝附近存在明显的增强效应，超宽带脉冲对正三角孔和方阵的耦合系数最小，脉宽短的入射脉冲耦合效应明显强于脉宽长的脉冲，耦合效应基本随入射角的减小而缓慢减小。
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| 关 键 词： | 电磁脉冲 孔缝耦合 时域有限差分法 数值模拟 |
| 收稿时间： | 1900-01-01; |
Numerical simulation on coupling effects of ultra wide band electromagnetic pulse into slots in a cavity |
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| Xiao Jinshi,Liu Wenhua,Zhang Shiying,Zhang Jinhua.Numerical simulation on coupling effects of ultra wide band electromagnetic pulse into slots in a cavity[J].High Power Laser and Particle Beams,2010,22(12). |
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| Authors: | Xiao Jinshi Liu Wenhua Zhang Shiying Zhang Jinhua |
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| Institution: | 1. College of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China;2. Navy Academy of Armament, Beijing 100161, China |
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| Abstract: | Aperture coupling is a main coupling mode through which ultra wide band(UWB) electromagnetic pulse(EMP) can disturb or damage many equipments. Coupling effects of slots with different shapes in a cuboid object are studied using finite difference in time domain(FDTD) method. Selecting slots with dimension of several millimeters as research object, coupling effects by varied incident angles and varied pulse widths are analyzed. Interior resonance effect, increase effect around slots and several distributing rules of electric field in the cavity are got. The main results include: clear increase effect occurs around rectangle slot; coupling coefficients of triangle slot and array are obviously smaller than that of other slots; coupling effect of incident pulse with short pulse width is obvious |
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| Keywords: | aperture coupling FDTD method numerical simulation |
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