| 基于支节容性加载的小型化低剖面超表面天线 |
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| 引用本文： | 隽月,车文荃,杨琬琛.基于支节容性加载的小型化低剖面超表面天线[J].南京气象学院学报,2019,11(1):23-29. |
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| 作者姓名： | 隽月 车文荃 杨琬琛 |
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| 作者单位： | 南京理工大学 电子科学与光电技术学院, 南京, 210094,南京理工大学 电子科学与光电技术学院, 南京, 210094;华南理工大学 电子与信息学院, 广州, 510640,南京理工大学 电子科学与光电技术学院, 南京, 210094;华南理工大学 电子与信息学院, 广州, 510640 |
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| 基金项目： | 国家自然科学基金青年基金（61601224）；江苏省自然科学基金青年基金（BK20160844） |
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| 摘 要： | 本文对容性支节加载的小型化超表面天线进行了分析与设计.通过在方形贴片上引入一对容性负载支节，可以有效地降低超表面单元的工作频率，从而将传统方形贴片超表面单元的尺寸减小55%.在单元设计的基础上，设计了一款4×4阵列的超表面天线，并采用特征模分析（CMA）解释了超表面天线的辐射机制.为了验证设计思路，对天线进行了加工和测试，测量的-10 dB阻抗带宽为21.7%，并在工作频带内保持6 dBi的辐射增益.
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| 关 键 词： | 超表面 小型化天线 容性加载 特征模分析 |
| 收稿时间： | 2018/11/20 0:00:00 |
Miniaturized low-profile metasurface antenna using capacitive loading |
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| JUAN Yue,CHE Wenquan and YANG Wanchen.Miniaturized low-profile metasurface antenna using capacitive loading[J].Journal of Nanjing Institute of Meteorology,2019,11(1):23-29. |
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| Authors: | JUAN Yue CHE Wenquan and YANG Wanchen |
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| Institution: | School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094,School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094;School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510006 and School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094;School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510006 |
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| Abstract: | A miniaturized metasurface antenna using capacitive loading is investigated. First, anovel miniaturized metasurface unit cell is proposed. By introducing a pair of capacitive-loading strips inserted along the diagonal of a square patch, a size reduction of 55% can be achieved for this miniaturized unit cell. Furthermore, a compact metasurface antenna of a 4×4 array is designed using the miniaturized unit cells, which is fed by a slot structure. The radiation mechanism of the metasurface antenna is revealed and explained using a characteristic mode analysis (CMA). To validate the design, a prototype of the proposed antenna is fabricated and measurements are taken. The measured -10 dB impedance bandwidthis 21.7%, while a gain of 6 dBi is observed within the operating bandwidth. |
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| Keywords: | metasurface miniaturized antenna capacitive loading characteristic mode analysis |
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