| 均匀照射赋形反射面天线设计 |
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| 引用本文： | 于新华,王俊,王鑫,王宜颖.均匀照射赋形反射面天线设计[J].电波科学学报,2020,35(3):358-363. |
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| 作者姓名： | 于新华 王俊 王鑫 王宜颖 |
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| 作者单位： | 桂林电子科技大学, 桂林 541004 |
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| 基金项目： | 国家自然科学基金61561013广西自然科学金2015GXNSFAA1393052019年度广西高校中青年教师科研基础能力提升项目2019KY0241桂林电子科技大学研究生优秀学位论文培育项目17YJPYSS092019广西自然科学基金面上项目2019GXNSFAA245053 |
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| 摘 要： | 为提高反射面天线的照射均匀性,利用波束赋形技术设计一款工作在15 GHz的高性能偏置反射面天线.该天线由一个非均匀有理B样条(non-uniform rational B-splines,NURBS)反射面和一个介质棒馈源组成,NURBS反射面通过物理光学法结合Nelder-Mead优化算法来赋形,从而获得理想的天线辐射场.仿真结果表明,赋形后的反射面天线相对旁瓣电平低于-20 dB,增益在-2.7°~2.7°的波束范围内超过20 dBi,且浮动不超过1 dB.该天线具有结构简单、旁瓣低、增益均匀的特点,在卫星通信等领域具有重要作用.
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| 关 键 词： | 反射面天线 波束赋形 NURBS技术 均匀照射 低旁瓣 |
| 收稿时间： | 2019-12-05 |
The design of evened radiation reflector antenna |
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| YU Xinhua,WANG Jun,WANG Xin,WANG Yiying.The design of evened radiation reflector antenna[J].Chinese Journal of Radio Science,2020,35(3):358-363. |
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| Authors: | YU Xinhua WANG Jun WANG Xin WANG Yiying |
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| Affiliation: | Guilin University of Electronic Technology, Guilin 541004, China |
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| Abstract: | In order to improve the radiation uniformity of reflector antennas, an offset reflector antenna working at 15 GHz is designed by using a beam-forming technology. The reflector antenna consists of a non-uniform rational B-splines(NURBS) reflector and a dielectric rod antenna, and the reflector surface is shaped by using both the physical optics and the Nelder-Mead algorithms to obtain a desired radiation pattern. The simulation results show that the relative side lobe levels of the shaped reflector antenna are below -20 dB, the gains in the beam width of -2.7° to 2.7° are exceed 20 dBi, and its fluctuation does not exceed 1 dB. This antenna has the characteristics of simple construction, low side-lobe and uniform gain, which plays an important role in satellite communication. |
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| Keywords: | reflector antenna beam-forming NURBS technique uniform irradiation low sidelobe |
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