一种基于双层磁性介质与榫眼结构的超材料吸波体仿真设计

宋彦君; 吕成; 仉佳; 左绍奇; 王青敏; 高志伟

doi:10.11884/HPLPB202537.250151

一种基于双层磁性介质与榫眼结构的超材料吸波体仿真设计

doi: 10.11884/HPLPB202537.250151

宋彦君^1,,
吕成²,
仉佳¹,
左绍奇¹,
王青敏^{1, 2, ,},
高志伟²

1.
中车唐山机车车辆有限公司，河北唐山 064000
2.
石家庄铁道大学河北省电磁环境效应与信息处理重点实验室，河北石家庄 050043

基金项目: 河北省电磁环境效应与信息处理重点实验室自主课题项目(ZZKT-202303)

详细信息

作者简介:
宋彦君，songyanjun.ts@crrcgc.cc

通讯作者:
王青敏，wangqingmin@stdu.edu.cn。

中图分类号: TB34
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- 文章访问数: 22
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- 被引次数: 0
出版历程
- 收稿日期: 2025-05-23
- 修回日期: 2022-08-07
- 录用日期: 2025-06-29
- 网络出版日期: 2025-08-13

A novel metamaterial absorber based on double magnetic media and mortise structure

1.
CRRC Tangshan Co., Ltd., tangshan, 064000, China
2.
School of Information Science and Technology, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China

摘要

摘要: 针对薄型化微波吸波材料在低频段带宽受限的技术瓶颈，本研究提出一种基于双层磁性介质与榫眼结构的新型吸波体设计方案，重点突破材料厚度与吸收带宽间的制约关系，实现L/S频段电磁波的高效吸收。研究采用磁性介质基板构建双层异质结构，结合表面周期排布的榫眼式金属谐振单元，利用磁损耗与结构谐振的协同效应增强电磁能量耗散。仿真结果表明，该吸波体在1.16～2.82 GHz频段内吸收率超过90%，有效覆盖L波段并延伸至S波段部分频段，在薄层条件下实现了1.66 GHz的宽频吸收，解决了低频段吸波材料厚度与带宽的固有矛盾，可为新一代薄型宽带吸波体的工程应用提供可行方案。
- L/S波段 /
- 微波吸收材料 /
- 超材料 /
- 磁性材料
Abstract: Background
In the design process of microwave absorbing structures, due to the larger wavelength of low-frequency electromagnetic waves, the thickness of the corresponding absorbing body will also increase. Therefore, achieving low-frequency broadband absorption in the microwave band with a thin thickness is a challenge.
Purpose
To address the technical bottleneck of limited bandwidth in thin microwave absorbing materials at low frequenciesthis study proposes a new absorbing body design scheme based on a double-layer magnetic medium and mortise structure, focusing on breaking through the constraint relationship between material thickness and absorption bandwidth to achieve efficient absorption of electromagnetic waves in the L/S frequency bands.
Methods
The metamaterial is constructed with a double-layer structure using magnetic material, combined with surface periodically arranged mortise-type metal resonant units, and utilizes the synergistic effect of magnetic loss and structural resonance to enhance electromagnetic energy dissipation.
Results
Simulation results show that within the working frequency band, there are two absorption peaks at f1=1.36 GHz and f2=2.29 GHz, and the absorption rate exceeds 90% in the 1.16-2.82 GHz frequency band, effectively covering the L band and extending to part of the S band. Under thin-layer conditions, it achieves a wideband absorption of 1.66 GHz, resolving the inherent contradiction between thickness and bandwidth of low-frequency absorbing materials.
Conclusions
The novel metamaterial absorber based on double magnetic media and mortise structure can provide a feasible solution for the engineering application of the next-generation thin broadband absorbing bodies.
- L/S band /
- microwave absorbing materials /
- metamaterials /
- magnetic materials

HTML全文

图 1 超材料吸波体模型示意图

Figure 1. Schematic diagram of the metamaterial absorber model

下载: 全尺寸图片幻灯片

图 2 不同情况下的反射系数曲线对比

Figure 2. Comparison of reflection coefficient curves under different conditions

下载: 全尺寸图片幻灯片

图 3 不同圆形半径R对吸波体性能影响仿真结果

Figure 3. Simulation results of the influence of different circular radii R on the performance of absorber

下载: 全尺寸图片幻灯片

图 4 不同凹槽深度T对吸波体性能影响仿真结果

Figure 4. Simulation results of the influence of different groove depths T on the performance of absorber

下载: 全尺寸图片幻灯片

图 5 超材料吸波体吸波性能

Figure 5. Absorption performance of the metamaterial absorber

下载: 全尺寸图片幻灯片

图 6 在1.36 GHz和2.29 GHz两个吸收峰处的能量损耗分布图

Figure 6. Simulated power loss distribution at the two absorption peaks of 1.36 GHz and 2.29 GHz

下载: 全尺寸图片幻灯片

表 1 单元结构的尺寸参数

Table 1. Dimensional parameters of unit structure

Structure
Parameters Parameter
Value/mm

P 20

H₁ 1.9

H₂ 6

R 8.5

w 1

L 6.1

T 0.5

下载: 导出CSV

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