设计一种基于电磁超材料的吸波体.该吸波体由两层金属及其中间的有耗介质组成,上层金属是由刻蚀交叉缝隙贴片形成的电谐振器,下层金属不做刻蚀,作为接地平面.通过优化结构参数,得到一种极化不敏感、宽入射角的超薄吸波结构,其吸波率达到99.7％,厚度只有约O.009λ.分析该吸波体的吸收机理及结构参数对吸波性能的影响.测试结果表明,该设计所获得的结果与仿真结果几乎一致.
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