Wideband radar absorbing panels with lossy multilayer graphene and carbon nanofiber-based coating

2016 IEEE International Symposium on Electromagnetic Compatibility (EMC) Pub Date : 2016-07-25 DOI:10.1109/ISEMC.2016.7571651

A. Proietti, A. Rinaldi, A. Tamburrano, G. De Bellis, M. S. Sarto

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引用次数: 3

Abstract

A novel lightweight wideband radar absorbing material (RAM) for radio-frequency is developed using a rohacell (RC) panel coated with a film of carbon nanostructures. The coating is produced through the dispersion of either commercial graphene nanoplatelets (GNPs) or carbon nanofibers (CNFs) in 1-propanol and the deposition of the so-obtained colloidal suspension onto the RC surface with a bristle brush. Finally, a polymeric film is deposited over the carbon-based lossy layer in order to protect the lossy coating from the external environment. The electromagnetic properties of the produced panels are investigated through reflection coefficient measurements in the X and Ku bands. It is demonstrated that the RAM with the GNP-based lossy layer has a -10 dB bandwidth of ~7 GHz, but the polymeric top layer degrades its performances, resulting in a minimum reflection coefficient of -9 dB. With the CNF-based lossy layer it is possible to fabricate a RAM with a -10 dB bandwidth of ~10 GHz. The application of the protective layer reduces the bandwidth to ~6 GHz.

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有损耗的多层石墨烯和碳纳米纤维涂层的宽带雷达吸收板

采用碳纳米结构涂层的rohacell (RC)面板，研制了一种新型的轻型射频宽带雷达吸波材料。该涂层是通过将商用石墨烯纳米片(GNPs)或碳纳米纤维(CNFs)分散在1-丙醇中，并用刚毛刷将获得的胶体悬浮液沉积在RC表面来制备的。最后，在碳基损耗层上沉积一层聚合物薄膜，以保护损耗涂层免受外部环境的影响。通过测量X波段和Ku波段的反射系数，研究了所制板的电磁特性。结果表明，具有gnp损耗层的RAM具有~7 GHz的-10 dB带宽，但聚合物顶层降低了其性能，导致反射系数最小为-9 dB。利用基于cnf的有损层，可以制造出带宽为- 10db、带宽为~ 10ghz的RAM。保护层的应用使带宽降低到~ 6ghz。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE International Symposium on Electromagnetic Compatibility (EMC)

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