| 低RCS EBG波导缝隙阵列天线 |
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| 引用本文： | 白佳俊,石东,付云起.低RCS EBG波导缝隙阵列天线[J].国防科技大学学报,2015,37(1):125-129. |
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| 作者姓名： | 白佳俊 石东 付云起 |
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| 作者单位： | 1. 国防科技大学 电子科学与工程学院,湖南 长沙,410073
2. 航天东方红卫星有限公司,北京,100000 |
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| 基金项目： | 新世纪优秀人才支持计划基金（NO.NCET-10-0894） |
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| 摘 要： | 将Mushroom电磁带隙结构(Electromagnetic Band Gap,EBG)的表面波带隙和同相反射特性同时用于波导缝隙阵列天线的设计,利用EBG的带隙特性抑制天线阵中的表面波,以改善天线的辐射性能;利用EBG的同相反射特性实现天线雷达散射截面(Radar Cross Section,RCS)的减缩,天线综合性能得到较大提升。制作了EBG波导缝隙天线阵样品,并对天线阵的阵元互耦、辐射方向图及天线阵RCS等指标进行了测试,结果与理论预期相吻合,有效地降低了阵元间互耦及天线阵RCS。
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| 关 键 词： | 电磁带隙 波导缝隙阵列天线 雷达散射截面 互耦 |
| 收稿时间： | 2014/6/10 0:00:00 |
EBG waveguide slot array with RCS reduction |
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| BAI Jiajun,SHI Dong and FU Yunqi.EBG waveguide slot array with RCS reduction[J].Journal of National University of Defense Technology,2015,37(1):125-129. |
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| Authors: | BAI Jiajun SHI Dong and FU Yunqi |
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| Institution: | 1.College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.China Spacesat Co.,Ltd., Beijing 100000, China;1.College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Mushroom electromagnetic bandgap structure shows surface-wave bandgap and in-phase reflection, we design the waveguide slot array antenna based on these two characteristics simultaneously. The surface-wave bandgap has been used to suppress the surface-wave in antennas and arrays, resulting in radiation performances improvement. In addition, this paper proposes that the in-phase reflection could be used at the same time to reduce the RCS level of antennas and arrays, so as to improve their total performances. We made a sample of four-elements EBG waveguide slot array antenna, and did the test of mutual coupling, radiation pattern and RCS of the sample. The result is logical relative to the theoretical expectation with fewer mutual coupling and lower RCS. |
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| Keywords: | EBG waveguide slot array RCS mutual coupling |
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