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

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2024-12-04 DOI:10.1038/s41598-024-81357-3

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

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引用次数: 0

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.

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具有Ku-Ka波段高效多功能偏振转换的蝴蝶超表面。

在Ku-Ka频率范围内，提出了一种高效、多功能的蝴蝶偏振转换超表面，旨在减小雷达的横截面。该转换器可实现双频段线性到交叉（LX）和线性到圆（LC）极化转换。在14.57 ~ 16.30 GHz和25.70 ~ 37.03 GHz频率范围内，相对带宽分别为11%和36%，交叉极化转换效率超过90%。左手圆极化波（LHCP）和右手圆极化波（RHCP）的反射频率分别为17.78 ~ 25.31 GHz和37.38 ~ 37.73 GHz，相对带宽分别为35%和0.9%。斜入射对超表面转换性能有显著影响，该模型具有60°角范围内的鲁棒性。此外，蝴蝶超表面被部署在三角形棋盘结构中，以实现14-15.17 GHz、24.60-35.20 GHz和36.30-38 GHz频段的雷达横截面（RCS）减少。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很好的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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