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一种在Ku-Ka波段工作的具有高效多功能偏振转换的蝶形超表面。

A butterfly metasurface with efficient multi-functional polarization conversion operating in the Ku-Ka band.

作者信息

Zhang Haoyu, Zhang Lijian, Song Peng, Li Yunhong, Gao Chuang, Xin Penghui, Liu Tian

机构信息

School of Electronic and Information, Xi'an Polytechnic University, Xi'an, 710048, Shaanxi, China.

College of Electronic Information, Qingdao University, Qingdao, 266071, China.

出版信息

Sci Rep. 2024 Dec 4;14(1):30161. doi: 10.1038/s41598-024-81357-3.

DOI:10.1038/s41598-024-81357-3
PMID:39627261
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11615296/
Abstract

A highly efficient and multi-functional butterfly polarization conversion metasurface is proposed for the Ku-Ka frequency range, designed to reduce the radar cross-section. The suggested converter enables dual frequency bands linear-to-cross (LX) and linear-to-circular (LC) polarization transformations. The efficiency of cross-polarization conversion exceeds 90% over the frequency ranges of 14.57-16.30 GHz and 25.70-37.03 GHz, with relative bandwidths of 11% and 36%, respectively. Reflections of left-hand (LHCP) and right-hand circularly polarized (RHCP) waves are realized within the frequency ranges of 17.78-25.31 GHz and 37.38-37.73 GHz, with relative bandwidths of 35% and 0.9%. The oblique incidence significantly affects the metasurface conversion performance, and the proposed model manifests angular robustness up to 60°. Additionally, the butterfly metasurfaces are deployed in a triangular chessboard configuration to achieve radar cross section (RCS) reduction spanning the frequency bands of 14-15.17 GHz, 24.60-35.20 GHz, and 36.30-38 GHz. Drawing from simulation results and test-based validation data, the proposed converter holds promising applications in wireless communication, antenna engineering, and radar stealth.

摘要

本文提出了一种用于Ku-Ka频段的高效多功能蝶形极化转换超表面，旨在减小雷达散射截面。所建议的转换器能够实现双频段的线性到交叉（LX）和线性到圆（LC）极化转换。在14.57-16.30GHz和25.70-37.03GHz频率范围内，交叉极化转换效率超过90%，相对带宽分别为11%和36%。在17.78-25.31GHz和37.38-37.73GHz频率范围内实现了左旋圆极化（LHCP）波和右旋圆极化（RHCP）波的反射，相对带宽分别为35%和0.9%。斜入射显著影响超表面的转换性能，所提出的模型在高达60°的角度范围内表现出角度鲁棒性。此外，蝶形超表面以三角形棋盘配置部署，以实现14-15.17GHz、24.60-35.20GHz和36.30-38GHz频段的雷达散射截面（RCS）减小。根据仿真结果和基于测试的验证数据，所提出的转换器在无线通信、天线工程和雷达隐身方面具有广阔的应用前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73dd/11615296/6a6a4761bffe/41598_2024_81357_Fig14_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/73dd/11615296/6a6a4761bffe/41598_2024_81357_Fig14_HTML.jpg

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本文引用的文献

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An analytical performance approach for RCS/RS with one robot serving multiple stack heights under a one-path relocation strategy.
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Multiband and multifunctional polarization converter using an asymmetric metasurface.使用非对称超表面的多频段多功能极化转换器
Sci Rep. 2021 Apr 29;11(1):9306. doi: 10.1038/s41598-021-88771-x.
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