特殊结构电磁兼容吸波材料及其应用研究  

Electromagnetic Compatibility Absorbing Materials with Special Structures and Their Applications

作　　者：胡益民 杨旭娟 郭涛 李新涛 江龙赟 Hu Yimin;Yang Xujuan;Guo Tao

机构地区：[1]南京航天波平电子科技有限公司 [2]航天长屏科技有限公司

出　　处：《安全与电磁兼容》2021年第3期53-57,共5页Safety & EMC

摘　　要：设计并制造了一种特殊结构的电磁兼容吸波材料,实现材料在30~1000 MHz范围内的反射率≤-17 dB,解决空间电磁波与吸波材料、铁氧体片在3个不同频段的匹配特性,材料高度由770 mm可降低至600 mm。利用电磁仿真,3 m法电磁兼容暗室的归一化场地衰减(NSA)值在±3.5 dB以内,为空间受限型电磁兼容暗室设计与建设提供可能。A special structure of electromagnetic compatibility absorbing material is designed and manufactured.The reflectivity of the material is≤-17 dB in the range of 30~1000 MHz.The matching characteristics of space electromagnetic wave,absorbing material and ferrite sheet in three different frequency bands are solved.The material height can be reduced from 770 mm to 600 mm.Using electromagnetic simulation,the normalized site attenuation(NSA)value of 3 m EMC anechoic chamber is in the range of±3.5 dB,it is possible for the design and construction of space limited EMC darkroom.

关 键 词：特殊结构 吸波材料 电波暗室 反射率 归一化场地衰减 

分 类 号：TN03[电子电信—物理电子学] TB34[一般工业技术—材料科学与工程]