基于多模态超表面的无天线罩隐身阵列天线

doi:10.12305/j.issn.1001-506X.2025.01.01

摘要/Abstract

摘要：

针对星载天线无法通过天线罩实现隐身的难题, 提出星载无天线罩自隐身天线。通过多模谐振原理并利用差异化激励方法, 构建具有单模态宽带隐身、双模态隐身-反射和双模态隐身-辐射特性的多模态电磁超表面, 进而设计辐射-隐身一体化天线。实测结果表明, 在3.05~4.95 GHz和6.4~10.5 GHz的带外吸收带, 实现雷达散射截面(radar cross section, RCS)缩减; 在5.7~6.15 GHz的频率区间内轴比低于3 dB, 天线的增益为15.3 dBi, 所设计的无天线罩一体化隐身圆极化阵列天线具有带外RCS缩减特性和良好的带内圆极化辐射性能。

关键词: 星载, 无天线罩, 隐身, 天线, 电磁表面

Abstract:

Aiming at the difficult problem that satellite-borne antennas cannot achieve stealth through radomes, this paper innovatively proposes a satellite-borne radome-free self-stealth antenna. By using the principle of multimode resonance and the differentiated excitation method, a multimodal electromagnetic hypersurface with single-modal broadband stealth, dual-modal stealth-reflection and dual-modal stealth-radiation characteristics is constructed, and then a radiation-stealth integrated antenna is designed. The measured results show that significant reduction in radar cross section (RCS) is achieved in the out-of-band absorption bands of 3.05-4.95 GHz and 6.4-10.5 GHz; within the frequency range of 5.7-6.15 GHz, the axial ratio is lower than 3 dB, and the gain of the antenna is 15.3 dBi. The designed radome-free integrated stealth circularly polarized array antenna has the characteristics of out-of-band RCS reduction characteristics and good in-band circularly polarized radiation performance.

Key words: spaceborne, radome free, stealth, antenna, metasurface

中图分类号:

TN820

黎亮, 高红伟, 张彬超, 金城. 基于多模态超表面的无天线罩隐身阵列天线[J]. 系统工程与电子技术, 2025, 47(1): 1-11.

Liang LI, Hongwei GAO, Binchao ZHANG, Cheng JIN. Radome-free stealth array antenna based on multimodal hypersurface[J]. Systems Engineering and Electronics, 2025, 47(1): 1-11.

图/表 14

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参考文献 35

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