新型微波暗室用耐功率吸波材料的回顾与展望  

Review and Perspective of Novel High-power Wave Absorber of Microwave Chambers

作　　者：刘列 张颖 盛佳琪 李健智 姬广斌[2] Liu Lie;Zhang Ying;Sheng Jiaqi;Li Jianzhi;Ji Guangbin

机构地区：[1]深圳市通用测试系统有限公司 [2]南京航空航天大学

出　　处：《安全与电磁兼容》2024年第4期19-31,共13页Safety & EMC

基　　金：国家自然科学基金面上项目(52273247)。

摘　　要：尽管有半个多世纪的使用历史,以聚氨酯(PU)和聚丙烯(PP)为代表的有机泡沫依然是微波暗室的主要吸波材料。新型吸波材料的研发进入了瓶颈期,功率耐受力在过去相当长的时间内没有显著的提升。另一方面,随着发射机功率的不断增大及尺寸不断缩小,输出功率密度越来越高,测量中的耐功率的矛盾愈发突出。在过去的二十余年里,超材料已经是电磁领域非常重要的话题,尽管性能上还存在工作带宽受限等缺点,仍然被认为是未来最有前途的电磁材料,有望成为耐功率暗室材料的继承者。文章首先综合评价了当下吸波材料的耐功率能力,在回顾材料耐高功率特性的仿真及测量研究方法的基础上,讨论了混合型吸波超材料、蜂窝类吸波超材料、含短切碳纤维吸波复合超材料的性能特点,展望了耐功率吸波材料的未来发展方向并提出建议。Although wave absorbers have been employed in anechoic chambers for more than half century,polyurethane(PU)and polypropylene(PP)foams are still the major candidates.It seems that the development of wave absorber encounter a bottleneck during the last few decades in term of power handling capability(PHC).With the increasing radiation power and the decreasing size,the radiation power density of devices under test(DUT)becomes much higher than before which results in deficient PHC during measurement.Metamaterial absorber(MA)has become a important topic in the past twenty years,which has been considered as the most promising candidate of EM materials for anechoic chamber even if it has limited effective bandwidth.In this paper PHC of various wave absorber is reviewed firstly,then the simulation and measurement method of absorbers are discussed.Finally,a few novel MA,like hybrid MA,honycomb MA and shortcutted carbon fiber MA are discussed before suggestion and perspective of high power wave absorber are proposed.

关 键 词：微波吸波体 微波暗室 电磁仿真 微波测量 高功率 

分 类 号：TB34[一般工业技术—材料科学与工程]