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

Abstract

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

CLC Number:

TN820

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.

Figures/Tables 14

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Radome-free stealth array antenna based on multimodal hypersurface

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