| 基于波导结构的紧凑型电介质加载双极化天线研究 |
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| 引用本文： | 马自龙,褚庆昕.基于波导结构的紧凑型电介质加载双极化天线研究[J].南京气象学院学报,2019,11(1):17-22. |
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| 作者姓名： | 马自龙 褚庆昕 |
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| 作者单位： | 华南理工大学 电子与信息学院, 广州, 510641,华南理工大学 电子与信息学院, 广州, 510641 |
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| 基金项目： | 华南理工大学人才队伍建设经费（2018） |
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| 摘 要： | 本文提出了一款基于波导结构的紧凑型电介质加载双极化天线.通过采用在传统波导内加载电介质材料的方法，可以有效减小波导尺寸，从而达到天线小型化的目的.针对波导结构口径天线高后瓣辐射的问题，本文提出了一种在波导金属壁上添加矩形槽孔的方法，该方法的原理不同于扼流环结构.相比之下，矩形槽孔具有结构简单、尺寸小、加工方便等优点.通过电磁场全波仿真分析，可以发现所提出的天线具有阻抗带宽宽（大于40%）、增益高（8.6±0.6 dBi）、辐射性能稳定等优点，有很大的潜力，可以应用在如卫星通信等X波段的各种应用场景中.
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| 关 键 词： | 小型化天线 波导结构 电介质加载 双极化 低后瓣辐射 |
| 收稿时间： | 2018/11/29 0:00:00 |
A compact dielectric dual-polarized waveguide antenna |
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| MA Zilong and CHU Qingxin.A compact dielectric dual-polarized waveguide antenna[J].Journal of Nanjing Institute of Meteorology,2019,11(1):17-22. |
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| Authors: | MA Zilong and CHU Qingxin |
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| Institution: | School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641 and School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641 |
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| Abstract: | This studyproposes a novel compact dielectric dual-polarized waveguide antenna. By usingdielectric materials, the physical dimensions of conventional air-filled waveguides can be effectively reduced. To mitigatestrong back-lobe radiation, this study proposes a method of designingrectangular slots on waveguide walls, theoperating principlesof which are similar to that of choke-ring structures. Compared to choke rings, the proposed rectangular slots exhibitseveral advantages;theyhave a simple structure and compact sizeand are easy to fabricate. Through full-wave simulation analyses, the proposed antenna was found to operate ata wide impedance bandwidth greater than 40% andexhibited a high gain of 8.6±0.6 dBi;it also demonstrated stable radiation performance over the operating bandwidth. These advantages imply that the proposed antenna can be used for various applications in X-band frequencies, such as satellite communication. |
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| Keywords: | compact size waveguide structure dielectric dual-polarization low back-lobe |
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