电磁功能复合材料行波抑制性能分析

doi:10.19936/j.cnki.2096-8000.20260328.011

摘要/Abstract

摘要： 研究用于层合结构电磁功能复合材料的表面波抑制性能,仿真分析了材料的电磁参数(复介电常数、复磁导率)与厚度对表面行波抑制性能的影响规律,并采用加载阻抗层的方法,在不增加复合材料重量、厚度前提下,提升了电磁功能复合材料低频表面行波抑制能力。结果表明:介电常数和磁导率均会对行波抑制效果产生影响,磁导率影响相对更大;随着介电常数的增加,高频表面波表面行波抑制能力逐渐增加;随着磁导率的增加,低、高频表面行波衰减强度均增大。当材料厚度满足四分之一波长的奇数倍时,可获得良好的行波抑制性能。当材料厚度为1 mm时,通过阻抗加载的复合设计,材料在1.5 GHz、3 GHz和6 GHz频点的行波抑制效果抑制系数可以分别达到4.41 dB/m、13.98 dB/m和27.31 dB/m;相比加载前,在保持高频表面行波抑制能力的同时,材料在1.5 GHz和3 GHz的行波抑制效果分别提升了1.86 dB/m和4.90 dB/m,实现了低频表面行波抑制能力的提升,可有效指导电磁功能复合材料行波抑制性能调控。

关键词: 表面行波衰减, 电磁功能材料, 介电常数, 磁导率, 阻抗加载, 复合材料

Abstract: The surface wave suppression performance of electromagnetic functional composite materials applied to laminated structures was studied. The influence of electromagnetic parameters (complex permittivity, complex permeability) and layer thickness on surface wave attenuation was evaluated through simulations. By adopting the method of loading an impedance functional layer, the low-frequency surface travelling wave suppression ability of the electromagnetic functional composite was improved without increasing the weight and thickness of the composite materials. The results show that both the permittivity and the permeability have an impact on the travelling wave suppression effect, and the permeability has a relatively greater influence. With the increase of the permittivity, the surface travelling wave suppression ability of the high-frequency surface waves gradually increases. As the permeability increases, the attenuation intensity of both low- and high-frequency surface travelling waves increases. When the thickness of the material meets the condition of being an odd multiple of a quarter-wavelength, excellent travelling wave suppression performance can be achieved for the material. When the thickness of the material is 1 mm, through the composite design with impedance loading, the suppression coefficients of the travelling wave suppression effect of the material at the frequency points of 1.5 GHz, 3 GHz and 6 GHz can reach 4.41 dB/m, 13.98 dB/m and 27.31 dB/m respectively. Compared with that before the impedance loading, while maintaining the high-frequency surface travelling wave suppression ability, the travelling wave suppression effect of the material is improved by 1.86 dB/m and 4.90 dB/m at 1.5 GHz and 3 GHz respectively, achieving the improvement of the low-frequency surface travelling wave suppression ability, which can effectively guide the regulation of the travelling wave suppression performance of electromagnetic functional composites.

Key words: surface wave attenuation, electromagnetic functional material, permittivity, permeability, impedance loading, composites

中图分类号:

TB332

礼嵩明, 郭闻, 吴思保, 鹿海军. 电磁功能复合材料行波抑制性能分析[J]. 复合材料科学与工程, 2026, 0(3): 92-101.

LI Songming, GUO Wen, WU Sibao, LU Haijun. Analysis of surface travelling wave suppression performance of electromagnetic functional composite materials[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(3): 92-101.

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