摘要
文章利用时域有限差分方法给出了电磁脉冲耦合进入金属腔体的仿真,分别对微波脉冲与单层屏蔽腔和双层屏蔽腔的耦合过程进行了数值计算;结果表明距离孔缝越远,场强衰减越厉害,对电子系统的干扰越小;且双层屏蔽腔的屏蔽效果明显优于单层屏蔽腔,通过前者耦合进入的场峰值要比后者小12 dB。以上结论对电子系统的电磁兼容、干扰以及防护都有实际的指导意义。
The coupling process of electromagnetic pulse into single-deck and double-deck metallic cavity is simulated by using FDTD method respectively. The analysis of numerical solution shows that attenuation of field intensity became heavier as the distance to the slot is increasing, and the density of field coupled into double-deck metallic cavity is 12dB lower than the density of field coupled into single-deck metallic cavity. Besides, the simulation of electromagnetic pulse coupling with metallic cavity is important for the research of electromagnetic compatibility, interference and defense of computer system.
出处
《信息工程大学学报》
2008年第4期408-411,共4页
Journal of Information Engineering University
基金
军队科研基金资助项目
关键词
时域有限差分
孔缝耦合
数值计算
finite-difference time-domain （FDTD） method
slot coupling
numerical calculation
