孔缝对电子设备机箱屏蔽效能影响的分析  

Analysis of Influence of Aperture on Shielding Effectiveness of Electronic Equipment Cabinet

作　　者：李磊 LI Lei(Southwest Institute of Electronic Technology,Chengdu,Sichuan Province,610036 China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《科技资讯》2024年第19期82-85,共4页Science & Technology Information

摘　　要：电子设备机箱由于散热及外接其他设备等原因需要开有各种孔缝,从而导致其电磁屏蔽效能降低。采用时域有限差分(Finite Difference Time Domain,FDTD)算法仿真分析了不同开孔形状、开孔尺寸、开孔数量及开孔间距的孔缝对电子设备机箱屏蔽效能的影响,为电子设备机箱提高屏蔽效能工程设计提供依据,同时也为散热结构设计提供电磁兼容方面的参考。Due to reasons such as heat dissipation and connection with external equipment,electronic equipment cabinet needs to have various apertures,which leads to the reduction of its electromagnetic shielding effectiveness.The Finite Difference Time Domain(FDTD)algorithm is used to simulate and analyze the effects of different shapes,sizes,numbers and spacings of apertures on the shielding effectiveness of electronic equipment cabinet.It provides a basis for the engineering design of electronic equipment cabinet to improve shielding effectiveness,and also provides a reference of heat dissipation structure design for the electromagnetic compatibility.

关 键 词：时域有限差分算法 屏蔽效能 孔缝耦合 电磁脉冲 

分 类 号：TJ760.3[兵器科学与技术—武器系统与运用工程]