| 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.[点击复制] |
| BAI Jiajun,SHI Dong,FU Yunqi.EBG waveguide slot array with RCS reduction[J].Journal of National University of Defense Technology,2015,37(1):125-129[点击复制] |
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| 低RCS EBG波导缝隙阵列天线 |
| 白佳俊1, 石东2, 付云起1 |
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(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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| 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。 |
| 关键词: 电磁带隙 波导缝隙阵列天线 雷达散射截面 互耦 |
| DOI：10.11887/j.cn.201501021 |
| 投稿日期：2014-06-10 |
| 基金项目:新世纪优秀人才支持计划基金资助项目（NCET-10-0894） |
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| EBG waveguide slot array with RCS reduction |
| BAI Jiajun1, SHI Dong2, FU Yunqi1 |
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(1.College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.China Spacesat Co.,Ltd., Beijing 100000, China)
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| Abstract: |
| Mushroom electromagnetic bandgap structure shows surface-wave bandgap and in-phase reflection, these two characteristics were simultaneously used for designing the waveguide slot array antenna. The surface-wave bandgap was used to suppress the surface-wave in antennas and arrays, which results in radiation performance improvement. In addition, the in-phase reflection could be used to reduce the RCS level of antennas and arrays, so as to improve their total performances. A sample of four-element EBG waveguide slot array antenna was made, and the indexes of mutual coupling, radiation pattern and RCS of the sample were tested. The result is similar with the theoretical expectation, which has effectively reduced the mutual coupling and the RCS level of antennas and arrays. |
| Keywords: electromagnetic band gap waveguide slot array antenna radar cross section mutual coupling |
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