用炭黑、碳化硅和锰锌铁氧体设计的双层材料减少电磁辐射

IF 0.9 Q3 ENGINEERING, AEROSPACE
Ariane Aparecida Teixeira de Souza, Nila Cecília de Farias Lopes Medeiros, L. I. Medeiros, G. Amaral-Labat, Matheus Carvalho Bispo, G. L. E. Lenz e Silva, A. F. N. Boss, M. Baldan
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引用次数: 2

摘要

雷达吸波材料(RAMs)是由聚合物基体和电磁吸波填料(如炭黑(CB)、碳化硅(SiC)或锰锌铁氧体(MnZn))制成的复合材料。为了提高其通过反射损耗(RL)衰减入射波的性能,可以在多层结构中制造ram。通常,RL分析是通过自由空间分析进行理论和实验验证的。在这里,我们证明了多层结构可以用矩形波导设计和容易地验证,使用更简单的设置和小样本。用2%的氯化碳(CB2)、40%的碳化硅(SiC40)和60%的锰锌(MnZn60)制备了三种复合材料。它们在ku波段上进行了表征,并用于验证多层结构,这种多层结构是通过简单地将每种材料堆叠在波导样品支架内而制备的。其中厚度为5.85 mm的SiC40+CB2结构得到了最好的结果,在17.8 GHz时的计算RL为-21 dB,在相同频率下的实测RL为-36 dB。总之,使用矩形波导已被证明是一种简单、廉价、精确和快速的多层结构设计验证方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Double Layer Material Designed to Reduce Electromagnetic Radiation with Carbon Black, Silicon Carbide and Manganese Zinc Ferrite
Radar absorbing materials (RAMs) are composites made with a polymeric matrix and an electromagnetic absorbing filler, such as carbon black (CB), silicon carbide (SiC) or manganese zinc ferrite (MnZn). To enhance their performances to attenuate an incident wave through reflection loss (RL), RAMs can be produced in multilayer structures. Usually, the RL analysis is done theoretically and experimentally validated with free space analysis. Here, it was demonstrated that multilayer structure can be designed and easily validated using rectangular waveguide, using a simpler setup and small samples. Three composites were produced using 2 wt% of CB (CB2), 40 wt% of SiC (SiC40) and 60 wt% of MnZn (MnZn60). They were characterized over the Ku-band and used to validate the multilayer structures, that were prepared by simply stacking each material inside the waveguide sample holder. One of the best results was obtained with structure SiC40+CB2 with 5.85 mm thickness, that presented a calculated RL of -21 dB at 17.8 GHz and a measured RL of -36 dB at the same frequency. In conclusion, using rectangular waveguide has been proven to be an easy, cheap, precise and fast approach to validate multilayer structures designs.
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来源期刊
CiteScore
2.00
自引率
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16
审稿时长
20 weeks
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