改进类电磁机制算法的FSS优化设计  

FSS′s optimization design by using improved electromagnetism-like mechanism algorithm

作　　者：胡晓朋 田雨波[1] HU Xiaopeng;TIAN Yubo(School of Electronics and Information,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003

出　　处：《现代电子技术》2018年第19期15-18,共4页Modern Electronics Technique

基　　金：江苏省重点研发计划社会发展面上项目(BE2016723)~~

摘　　要：针对传统微带天线增益低的问题,利用改进的类电磁机制算法设计优化一种频率选择表面结构并加载于微带天线的辐射方向上。首先,在标准类电磁机制算法的基础上引入早熟的判断和处理机制,克服算法后期易陷入局部最优的缺陷。数值仿真结果表明,改进后的算法搜索精度得到提升,稳定性更好。然后将该算法用于优化一种双层方形频率选择表面结构,并将其加载到微带天线上方。相比普通的微带天线,新型微带天线最大辐射方向上的增益提高了3.1 dB。An improved electromagnetism-like mechanism(EM)algorithm is used to optimize the frequency selective surface(FSS)structure and increase the gain of the traditional microstrip antenna.The FSS structure has been loaded in the radial direction of the microstrip antenna.On the basis of standard EM algorithm,the premature judgment and processing mechanism are introduced to overcome the drawback that the algorithm in the later stage is easy to fall into local optimum.The numerical simulation results show that the improved algorithm can improve the search precision and stability.The algorithm is applied to the double-layer square FSS structure,and this structure is loaded above the microstrip antenna.In comparison with the common microstrip antennas,the gain of the new microstrip antenna at maximum radial direction is increased by 3.1 dB.

关 键 词：频率选择表面 微带天线 类电磁机制算法 早熟收敛 小波变异 天线增益 

分 类 号：TN011-34[电子电信—物理电子学] TP301.6[自动化与计算机技术—计算机系统结构]