Low-profile, wideband RCS-reduction antenna array based on a metal-ink hybrid metasurface.

IF 3.2 2区 物理与天体物理 Q2 OPTICS Optics express Pub Date : 2024-11-04 DOI:10.1364/OE.542662
Ao Fu, Chen Wang, Silong Chen, Kunping Yang, Bo Ren, Ping Chen
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Abstract

In this study, a highly flexible metal-ink hybrid metasurface that can be integrated with planar structures is proposed. The metasurface achieves wideband absorption performance while maintaining an efficient transmission window. Based on equivalent circuit model analysis, an aperture-coupled antenna array was integrated with the metasurface, enabling simultaneous wideband radar cross-section (RCS) reduction and high-performance radiation. The integration of the metasurface and antenna array allowed the overall structure to maintain a low profile. Simulation results show that the proposed array achieves a 10 dB RCS reduction against a metal plate of the same size over the [2.03, 8.11] GHz range, with a fractional bandwidth of 119.9% under x-polarized wave incidence. Under y-polarized wave incidence, a 10 dB RCS reduction is achieved at both [2.12, 5.1] GHz and [6.1, 8.06] GHz, with fractional bandwidths of 82.5% and 27.6%, respectively. Moreover, the array maintains a peak gain of 26.3 dBi and sidelobe levels less than -18 dB. The experimental results align well with the simulated results. The proposed low-RCS antenna array offers potential advancements in planar antenna technology, enhancing stealth capabilities.

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基于金属墨水混合元表面的低剖面宽带 RCS 减小天线阵列。
本研究提出了一种可与平面结构集成的高柔性金属墨水混合元表面。该元表面在保持高效传输窗口的同时实现了宽带吸收性能。根据等效电路模型分析,将孔径耦合天线阵列与元表面集成,可同时实现宽带雷达截面(RCS)减小和高性能辐射。元表面和天线阵列的集成使整体结构保持了低矮的外形。仿真结果表明,在[2.03, 8.11]GHz范围内,与相同尺寸的金属板相比,拟议的阵列实现了 10 dB 的 RCS 降低,在 x 极化波入射条件下的分数带宽为 119.9%。在 y 偏振波入射条件下,[2.12, 5.1] GHz 和 [6.1, 8.06] GHz 频率范围内的 RCS 降低了 10 dB,分数带宽分别为 82.5% 和 27.6%。此外,该阵列还保持了 26.3 dBi 的峰值增益和小于 -18 dB 的旁瓣电平。实验结果与模拟结果十分吻合。所提出的低 RCS 天线阵列为平面天线技术提供了潜在的进步,增强了隐形能力。
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来源期刊
Optics express
Optics express 物理-光学
CiteScore
6.60
自引率
15.80%
发文量
5182
审稿时长
2.1 months
期刊介绍: Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
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