摘要
提出了一种单频抗多路径的GPS(Global Position System)圆极化微带天线。通过贴片开槽技术,实现了天线小型化;加载优化的3D扼流圈,则可有效地消除或削弱多路径效应和电磁干扰。采用Ansoft公司的HFSS软件进行3D建模仿真分析,给出了回波损耗S11曲线、轴比曲线和辐射方向图。天线在工作频点获得了较宽的阻抗带宽,实现了抗多径的效果。
A single frequency GPS（Global Position System）circular polarization microstrip antenna for anti-multipath is presented.The proposed antenna achieves the miniaturization,through the patch-slotted technology of antenna.The use of 3D-choke can effectively eliminate or weaken the multi-path effects and electromagnetic interference.The paper describes the implementation of 3D modeling and electromagnetic（EM）field simulation analysis by utilizing software HFSS.The curves give echo loss S11 curve,axial ratio curve and radiate direction pattern of the antenna.The results show that the good impedance bandwidth is gained at the working frequency and anti-multipath effect is realized.
出处
《制导与引信》
2014年第2期48-51,60,共5页
Guidance & Fuze
关键词
圆极化
小型化
多路径
circular polarization
miniaturization
multipath
