Dai Huijuan, Li Shuying, Dong Peng, Ma Yanqin
College of Electrical Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210023, China.
Materials (Basel). 2023 Aug 31;16(17):5962. doi: 10.3390/ma16175962.
In this paper, a multilayer ultra-wideband transparent metamaterial wave absorber is proposed, which has the characteristics of ultra-wideband wave absorption, light transmission and flexible bending; in addition, due to the complete symmetry of the structure, the absorber has polarization insensitivity to incident electromagnetic waves. Both simulation and experimental results show that the frequency range of the microwave absorption rate is higher than 90% between 8.7 GHz and 38.9 GHz (between which most of the absorption rate can reach more than 95%), the total bandwidth is 30.2 GHz, and the relative bandwidth is 126.9%, realizing microwave broadband absorption and covering commonly used communication frequency bands such as X-band, Ku-band, and K-band. A sample was processed and tested. The test results are in good agreement with the results of the theoretical analysis, which proves the correctness of the theoretical analysis. In addition, through the selection and oxidation of indium tin (ITO) materials, the metamaterial also has the characteristics of optical transparency and flexibility, so it has potential application value in the window radar stealth and conformal radar stealth of weapons and equipment.
本文提出了一种多层超宽带透明超材料吸波器，它具有超宽带吸波、光透射和柔性弯曲的特点；此外，由于结构完全对称，该吸波器对入射电磁波具有极化不敏感性。仿真和实验结果均表明，微波吸收率高于90%的频率范围为8.7GHz至38.9GHz（其中大部分吸收率可达95%以上），总带宽为30.2GHz，相对带宽为126.9%，实现了微波宽带吸收，覆盖了X波段、Ku波段和K波段等常用通信频段。制作并测试了一个样品。测试结果与理论分析结果吻合良好，证明了理论分析的正确性。此外，通过对铟锡（ITO）材料的选择和氧化，该超材料还具有光学透明和柔性的特点，因此在武器装备的窗口雷达隐身和共形雷达隐身方面具有潜在的应用价值。
