Highly-Efficient, Dual-Polarized Huygens’ Metasurfaces for Scan-Angle Enhancement Without Directivity Degradation

IF 3.4 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2025-04-30 DOI:10.1109/ACCESS.2025.3565892

Jaemin Kim;Mohammad Soltani;Minseok Kim;George V. Eleftheriades

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引用次数: 0

Abstract

We hereby propose a dual-polarized beam-deflecting metasurface that can double the scan-angle range of a phased-array antenna without compromising the directivity across all scan angles, including broadside. In particular, our research focuses on expanding the scanning range of a dual-polarized phased-array antenna capable of independently steering TE and TM waves. This is achieved by placing a dual-polarized phase-gradient Huygens’ metasurface in front of the antenna. The Huygens’ metasurface employs crossed meander lines in four impedance layers that are suitably optimized to independently control the local electric and magnetic responses for maximizing the transmission for all incident beams. We validate our approach through theoretical analysis, full-wave simulations, and experimental verification. It is demonstrated that the beam-deflecting HMS achieves effective scan range expansion to

$-30^{\circ } \sim 0^{\circ } $

and

$0^{\circ } \sim 30^{\circ } $

for TE and TM beams, respectively, using a dual-polarized phased array antenna source that scans from −15° and 15°.

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高效，双偏振惠更斯超表面扫描角增强无方向性退化

我们在此提出了一种双极化波束偏转超表面，它可以使相控阵天线的扫描角度范围加倍，而不会影响所有扫描角度的指向性，包括侧面。特别是，我们的研究重点是扩大能够独立转向TE和TM波的双极化相控阵天线的扫描范围。这是通过在天线前放置一个双极化相位梯度惠更斯超表面来实现的。惠更斯的超表面在四个阻抗层中采用交叉弯曲线，这些阻抗层经过适当优化，可以独立控制局部电和磁响应，从而最大化所有入射光束的传输。我们通过理论分析、全波模拟和实验验证了我们的方法。结果表明，采用双极化相控阵天线源，从- 15°和15°扫描TE和TM波束，波束偏转HMS的有效扫描范围分别扩展到$-30^{\circ} \sim 0^{\circ} $和$0^{\circ} \sim 30^{\circ} $。

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

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

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