文章摘要
郝彪, 杨宾锋, 高军, 曹祥玉, 杨欢欢, 李桐.基于辐射散射一体化技术的低RCS贴片天线阵列设计[J].空军工程大学学报:自然科学版,2020,21(4):74-79
基于辐射散射一体化技术的低RCS贴片天线阵列设计
Low RCS Patch Antenna Array Based on Integrated Radiation and Scattering Performance
  
DOI:
中文关键词: 低雷达散射截面  天线阵列  编码超材料
英文关键词: low RCS  antenna array  coding metamaterial
基金项目:国家自然科学基金(61471389,61671464,61801508)
作者单位
郝彪, 杨宾锋, 高军, 曹祥玉, 杨欢欢, 李桐 空军工程大学信息与导航学院西安710077 
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中文摘要:
      提出并设计了一种基于辐射散射一体化技术的4×4低RCS贴片天线阵列,该阵列由2种辐射特性相似、反射相位相差180°的天线单元组成。利用遗传算法优化得到散射场在各方向均匀分布的非周期阵列结构,有效减小了天线阵的峰值RCS。仿真结果表明:天线阵列的增益在16 dBi以上;法线方向x极化波照射时,单站RCS减缩频带为8~15.9 GHz,最大减缩量为17.1 dB;y极化波照射时,单站RCS减缩频带为9.5~16 GHz,最大减缩量为13.1 dB。测试结果与仿真拟合较好。该阵列集超材料和贴片天线于一体,利用天线单元自身相位差有效降低了其RCS值,为降低天线阵列RCS提供了一种新的方法。
英文摘要:
      In this letter, a low RCS patch antenna array based on integrated of radiation and scattering performance has been designed. The 4×4 array is comprised of two different antenna units, which have similar radiation characteristics but 180° reflection phase difference. By using genetic algorithms, aperiodic configuration can be obtained, which makes the scattering field evenly scattered in all directions and effectively reduces the peak value of RCS. Simulation results shows gain of the proposed array is more than 16 dBi. Under xpolarization the monostatic RCS in normal direction is reduced from 8 GHz to 15.9 GHz and the peak reduction is 17.1 dB. Under y polarization the monostatic RCS in normal direction is reduced from 9.5 GHz to 16 GHz and the peak reduction is 13.1 dB. The proposed array was manufactured for test and the measured results show good agreement with the simulation results. The proposed array has characteristics of metamaterial and patch antenna. The RCS is reduced because of phase difference of antenna units without any other metamaterial, which provides a new method to reduce the RCS of the antenna array.
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