| 18单元线极化径向线阵列天线优化及实验研究 |
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| 引用本文： | 王欣,刘庆想.18单元线极化径向线阵列天线优化及实验研究[J].西南交通大学学报,2011(5):803-807. |
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| 作者姓名： | 王欣 刘庆想 |
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| 作者单位： | 西南交通大学物理科学与技术学院;中国兵器装备集团成都火控技术中心; |
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| 摘 要： | 为了改善18单元线极化径向线阵列天线的辐射性能,通过改变子阵馈电网络封口形状并优化馈电探针、改进单元天线和适当减小阵列天线单元间距3种方法,对阵列天线进行优化,对反射特性和辐射特性进行理论分析、数值仿真和实验研究.仿真结果表明:中心频率1.57 GHz上的反射系数为0.067,增益为18.73 dBi,轴比为-39.82 dB;在1.43～1.76 GHz范围内,反射系数小于0.15.实验结果表明:中心频率1.57 GHz上的驻波比为1.19(对应的反射系数为0.087),增益为17.65 dBi,轴比为-39.2 dB;在1.47～1.77 GHz范围内驻波比小于1.4(对应的反射系数为0.17).仿真结果与实验结果相符.
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| 关 键 词： | 线极化 径向波导 口径效率 反射 |
Optimization and Experimental Study of 18-Element Linearly-Polarized Radial Waveguide Array Antenna |
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| WANG Xin,LIU Qingxiang.Optimization and Experimental Study of 18-Element Linearly-Polarized Radial Waveguide Array Antenna[J].Journal of Southwest Jiaotong University,2011(5):803-807. |
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| Authors: | WANG Xin LIU Qingxiang |
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| Institution: | WANG Xin1,2,LIU Qingxiang1(1.School of Physics Science and Technology,Southwest Jiaotong University,Chengdu 610031,China,2.Fire Control Center of China South Industries Group Corporation,Chengdu 611731,China) |
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| Abstract: | In order to improve the performance of a 18-element linearly-polarized waveguide array antenna,three methods were used to optimize the array antenna,including changing the the feeding network's seal shape for the array unit and optimizing the feeding probe,improving the cell antenna,and reducing the space between two cell antenna.Then,theoretical analysis,numerical simulation and experimental measurement of this radial line helical array antenna were carried out.The results of simulation show that at the ce... |
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| Keywords: | linearly polarized radial waveguide aperture efficiency reflection |
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