以现有的电磁超材料吸波体的主要方案为基础，对吸波体结构进行改进，研究并比较了相同单元叠层结构、不同单元叠层结构超材料吸波体的性能。根据仿真分析得出：适当增加相同单元叠层结构的层数，不仅吸波率得到提升，还会出现多个吸波峰；此外，不同单元叠层结构，在参数合理配置时，不仅拥有相同单元叠层结构的多频段、高吸波率、宽频带等优点，还可以实现近100％吸波率的完美吸波。
Based on the typical scheme of electromagnetic metamaterials designed for absorbing,this paper pres-ents an improved scheme:multi-layer configuration.We focus on the absorbing properties of 2 types of multi-layer configurations:with same units and different units,respectively.The simulation results show that for the same units type,higher absorbing rate and extra multiple curve peaks can be got if we increase the number of the layers properly.Moreover,as to the different units type,it can be made not only with the above advanta-ges:multi-working bands,high absorbing rate and wide frequency range,but also with a nearly 100% absorb-ing rate,as a perfect absorber.
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