Characterizing Carbon Fiber Conductivity for Structural Antenna Applications
Characterizing Carbon Fiber Conductivity for Structural Antenna Applications
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DOI：
10.1109/tap.2021.3102037
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发表时间：
2022-01-01
影响因子：
5.7
通讯作者：
Arnold, Emily J.
中科院分区：
文献类型：
--
作者：
Patil, Ankur S.;Arnold, Emily J.
本研究探讨了碳纤维复合材料在结构天线方面的潜在应用。碳纤维复合材料具有优异的比强度和比刚度；然而，它们的电学性能，比如导电性，尚未明确，特别是在甚高频（VHF）波段。通过模拟进行电学性能评估需要了解材料的导电性。通过对多个碳纤维天线进行实验和模拟相结合的分析，确定了双轴向编织碳纤维复合材料在甚高频频谱中的有效电导率在7000到13000西门子/米之间。发现碳纤维天线的性能对碳纤维与铜馈线之间的接触特别敏感；然而，发现碳纤维复合材料天线的辐射效率在几何形状相同的铜天线的2% - 10%范围内，并且它们的带宽几乎相同。碳纤维复合材料天线的电学性能在甚高频波段的结构天线应用中显示出巨大的潜力。
This study explores the potential applications of carbon fiber composite material for structural antennas. Carbon fiber composite materials provide excellent specific strength and stiffness; however, their electrical properties, such as conductivity, are not well established, especially in the very high-frequency (VHF) range. Knowledge of a material's conductivity is required for electrical performance estimation through simulations. Through combined experimental and simulated analysis of multiple carbon fiber antennas, the effective conductivity for a biaxial weave carbon fiber composite was determined to be between 7000 and 13 000 S/m in the VHF spectrum. Carbon fiber antenna performance is found to be particularly sensitive to the contact between the carbon fibers and the copper feed; however, radiation efficiencies (REs) of carbon fiber composite antennas are found to be within 2%-10% of a geometrically identical copper antenna, and their bandwidths are nearly identical. The electrical performance of carbon fiber composite antennas demonstrates significant promise for structural antenna applications in the VHF range.