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曲面的 3D 超材料宽带吸波器。

3D metamaterial ultra-wideband absorber for curved surface.

机构信息

Faculty of Technical and Engineering, Imam Khomeini International University, Qazvin, Iran.

Faculty of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran.

出版信息

Sci Rep. 2023 Jan 19;13(1):1043. doi: 10.1038/s41598-023-28021-4.

DOI:10.1038/s41598-023-28021-4
PMID:36658245
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9852439/
Abstract

This paper proposes a three-dimensional metamaterial absorber based on a resistive film patch array to develop a low-cost, lightweight absorber for curved surfaces. An excellent absorption over a large frequency band is achieved through two different yet controllable mechanisms; in the first mechanism, a considerable attenuation in the wave power is achieved via graphite resistive films. The absorption is then intensified through magnetic dipoles created by the surface currents, leading to absorption peaks. The simulation results of the absorber show that a broadband absorption greater than 85% is achieved over 35-400 GHz for both TE and TM polarization waves at normal incidence. The structure has more than 167% and 80% absorption bandwidth above 85% and 90%, respectively. It is shown that the proposed metamaterial absorber is independent of incident wave polarization. In addition, the structure is insensitive to incident angles up to 60° for TE mode and full range angle 90° for TM mode. To describe the physical mechanism of the absorber, E-field, power loss density and surface current distributions on the structure are calculated and shown. Moreover, the oblique incidence absorption efficiency is also explained. This absorber paves the way for practical applications, such as sensing, imaging and stealth technology. In addition, the proposed structure can be extended to terahertz, infrared and optical regions.

摘要

本文提出了一种基于电阻膜贴片阵列的三维超材料吸波器，旨在为曲面开发一种低成本、轻量级的吸波器。通过两种不同但可控的机制实现了宽频带的优异吸收：在第一种机制中，通过石墨电阻膜实现了相当大的波功率衰减。然后，通过表面电流产生的磁偶极子来增强吸收，从而产生吸收峰。吸波器的模拟结果表明，在正常入射下，TE 和 TM 极化波的吸收率大于 85%，带宽大于 35-400GHz。该结构在 85%和 90%以上的吸收率带宽分别超过 167%和 80%。结果表明，所提出的超材料吸波器与入射波极化无关。此外，TE 模式的入射角高达 60°，TM 模式的全角度为 90°，结构对入射角不敏感。为了描述吸波器的物理机制，计算并展示了结构上的 E 场、功率损耗密度和表面电流分布。此外，还解释了斜入射吸收效率。这种吸波器为传感、成像和隐身技术等实际应用铺平了道路。此外，所提出的结构可以扩展到太赫兹、红外和光学区域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/d60504786a67/41598_2023_28021_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/af9191eb8a88/41598_2023_28021_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/a9b03bc04662/41598_2023_28021_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/33d441861020/41598_2023_28021_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/04756f4d4b54/41598_2023_28021_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/a4cfd2e4a87d/41598_2023_28021_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/e7cd5aa65c0d/41598_2023_28021_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/bc7ccdca2b4c/41598_2023_28021_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/dddd621a2376/41598_2023_28021_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/d741c37447a0/41598_2023_28021_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/e35e654bbcb4/41598_2023_28021_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/dad83bfcd504/41598_2023_28021_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/d60504786a67/41598_2023_28021_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/af9191eb8a88/41598_2023_28021_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/a9b03bc04662/41598_2023_28021_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/33d441861020/41598_2023_28021_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/04756f4d4b54/41598_2023_28021_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/a4cfd2e4a87d/41598_2023_28021_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/e7cd5aa65c0d/41598_2023_28021_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/bc7ccdca2b4c/41598_2023_28021_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/dddd621a2376/41598_2023_28021_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/d741c37447a0/41598_2023_28021_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/e35e654bbcb4/41598_2023_28021_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/dad83bfcd504/41598_2023_28021_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bf7/9852439/d60504786a67/41598_2023_28021_Fig12_HTML.jpg

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