基于HPSO的波束扫描反射阵天线设计  

Design of Beam-Scanning Reflectarray Antenna Based on HPSO

作　　者：陈宏伟[1] 张广求 雷雪[1] 吴君默 孙武剑[2] 

机构地区：[1]信息工程大学信息系统工程学院,郑州450002 [2]北方电子设备研究所,北京100876

出　　处：《微波学报》2015年第3期40-43,共4页Journal of Microwaves

摘　　要：提出一种基于混合粒子群算法(HPSO)的低旁瓣波束扫描反射阵天线设计方法。在该方法中,首先利用天线实际方向图和渐变的理想方向图构建了加权的适应度函数。然后通过优化口径面相位分布搜索适应度函数的最小值,最终达到降低旁瓣的目的。同时,设计并制作了一副中心频率为12GHz的圆极化波束扫描反射阵天线。实测结果与仿真结果较为吻合,天线在56°扫描范围内,旁瓣电平均小于-15d B,且带宽达到11.67%。A new design method based on hybrid particle swarm optimization algorithm is proposed for low side-lobe beam-scanning reflectarray antenna. In this method,we defined a weighted fitness function firstly by the actual antenna pattern and the gradual ideal pattern,then searched the minimum value of this function by optimizing the aperture phase distribution,and achieve the purpose of lower side-lobe level ultimately. Meanwhile,a circular polarized beam-scanning reflectarray antenna with a center frequency of 12 GHz was designed and fabricated. The measured results agree well with the simulated ones,the side lobe level is below 15 d B within the scan range of 56°,the band can reach 11. 67%.

关 键 词：混合粒子群算法 波束扫描 反射阵 适应度函数 

分 类 号：TN820.15[电子电信—信息与通信工程]