基于粒子群算法的低副瓣螺旋天线设计  

Design of a low sidelobe helical antenna by using particle swarm optimization

作　　者：陈腾博[1] 焦永昌[1] 张福顺[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,陕西西安710071

出　　处：《电波科学学报》2008年第3期402-406,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金项目(60171045)

摘　　要：提出了一种单绕低副瓣螺旋天线的设计方法。在单绕螺旋天线外加一个金属锥面来改变天线的辐射特性。采用粒子群算法对影响天线方向图的参数,包括金属锥面两端的口径和长度进行了设计,以降低天线辐射方向图的最大副瓣电平。仿真分析和实验测试结果说明在要求的1268.5±10 MHz频带范围内该天线驻波比小于1.15,天线方向图的最大副瓣电平低于-25 dB。A low sidelobe single wrap helical antenna is presented in this paper. A single wrap helical antenna is appended with a metal cone, thus the radiation characteristic can be changed. The particle swarm optimization algorithm is adopted to optimize the parameters affecting antenna pattern such as the diameters of both ports and the length of the metal cone, such that the sidelobe level of patterns can be reduced. Both simulation results and measurement results show that for interested 1268.5±10 MHz band, the VSWR of antenna is less than 1.15 and the sidelob level of antenna is less than -25 dB.

关 键 词：螺旋天线 金属锥面 粒子群算法 

分 类 号：TN821[电子电信—信息与通信工程]