加载电磁带隙结构的平切圆锥等角螺旋天线  

Conformal equiangular spiral antenna on circularly truncated cone with electromagnetic band-gap structure

作　　者：刘宁川[1] 李浩[1] 李家胤[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《强激光与粒子束》2011年第11期3103-3106,共4页High Power Laser and Particle Beams

基　　金：中央高校基本科研业务费专项基金项目(103.1.2.E022050205);国防科技基础研究基金项目

摘　　要：加载电磁带隙的平切圆锥等角螺旋(EAS-EBG)天线可以在很宽的频带范围内提高辐射增益。建立了平切等角螺旋锥体(EAS)天线的基本模型,并用HFSS对其进行了仿真。研究了一种加载电磁带隙结构的平切圆锥等角螺旋锥体天线。该天线是在保持原平切等角螺旋锥体天线外形不变的情况下,加载了小型化的电磁带隙结构,以提高增益并保持共形化。仿真结果表明:加载电磁带隙结构的模型增益在5～12GHz带宽下可以提高1～3dB,并且轴比特性基本不变。The paper proposes a conformal equiangular spiral antenna on the circularly truncated cone with electromagnetic band-gap structure（EAS-EBG antenna）,which shows wideband characteristics with respect to the gain.Firstly,a conformal equiangular spiral antenna on the circularly truncated cone（EAS antenna） is modeled and analyzed by using the professional software HFSS.Next,the EAS-EBG antenna is studied,which inserts a small area of electromagnetic band-gap（EBG） structure into the circularly truncated cone to remain conformal and increase gain.The simulation shows that the antenna gain increases about 1 to 3 dB within the frequency range from 5 to 12 GHz and the axial ratio remains almost unchanged.

关 键 词：保形天线 等角螺旋天线 电磁带隙结构 超带宽 

分 类 号：TN806[电子电信—信息与通信工程]