复杂矩形腔屏蔽效能分析  

Shielding Effectiveness of Complex Rectangular Cavity

作　　者：田东[1] 陈少昌[1] 

机构地区：[1]海军工程大学电子工程学院,武汉430033

出　　处：《电光与控制》2010年第10期93-96,共4页Electronics Optics & Control

摘　　要：提高武器系统和设备对电磁脉冲的防护能力意义重大,而屏蔽技术则是防护电磁干扰的主要手段。介绍了屏蔽原理,建立了双层和带有分仓的孔缝矩形屏蔽腔的物理模型,使用有限元软件仿真计算了其屏蔽效能和腔体的谐振频率。结果表明:与单层屏蔽腔相比,双层屏蔽腔有着更高的屏蔽效能;分仓可以提高其内部空间的屏蔽效能。这对屏蔽体的设计和提高设备对电磁脉冲的防护能力具有一定的理论价值和实际意义。It is of great value to improve the capability of armament system against the influence of electromagnetic pulses,and shielding enclosure is an important technology for it.The theory of shielding was introduced,the models of double layer rectangular cavity and rectangular cavity with separate room were built up.The Finite Element Modeling（FEM） software was used to simulate and analyze the shielding effectiveness and the dominant resonant frequency.The results indicated that： 1） compared with single-layer shielding cavity,the double layer rectangular cavity has better shielding effectiveness;and 2） the shielding effectiveness of a rectangular cavity can be improved by using a separate room.

关 键 词：电磁脉冲 双层屏蔽腔 屏蔽效能 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TN03[电子电信—物理电子学]