雷达吸波材料在电磁兼容上的应用
Applications of Radar Absorbing Materials on Electromagnetic
Compatibility
摘要 介绍了雷达吸波材料的工作原理及设计、制备方法,并分别针对窄带吸波材料和宽带吸波材料在电磁兼容上的应用,探讨了材料设计方法以及吸收剂的选用。结果表明:对于不同的设计要求应选用不同的吸收剂,在高频段为获得高吸波性能材料宜选用低电磁参数或低体积含量的改性羰基铁粉;在低频段,则相反。而对于宽带吸波材料,要求吸收剂具有更好的电磁匹配性能。
关键词 雷达吸波材料;反射率;电磁干扰;电磁兼容
Abstract The operation principle of one-layer radar absorbing materials (RAM) is briefly
described. The design methods and absorber selections are discussed for different
applications of RAM on electromagnetic compatibility. The results show that absorber
should be carefully chosen to fit the application requirements. Modified carbonyl iron
powders of low EM parameters are suitable for application in high frequency range and
reverse vice in low frequency range. Matching of EM parameters is necessary for
broadband RAM to achieve high absorptive property.
Keywords RAM; reflection; EMI; EMC