光子晶体在L/X双频天线中的应用  

Application of Photonic Crystal to L/X Dual Frequency Antennas

作　　者：王志伟[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2011年第2期39-41,共3页Radio Communications Technology

摘　　要：光子晶体(Photonic Crystal)具有频率带隙、同相反射等特殊性能,利用光子晶体的频率带隙特性,可以有效抑制表面波和谐波辐射,改善天线性能。简要介绍了L/X双频馈源的工作原理,设计了矩形金属贴片结构的光子晶体,通过仿真验证了其具有频率带隙特性,将设计的矩形金属贴片结构的光子晶体技术应用到L/X双频馈源的设计当中,有效抑制了X频段表面波,通过仿真及实测均可以看出,改善了馈源方向图,提高了天线增益。The photonic crystal is specially characteristic of the frequency band gap,the in phase reflection and so on.The frequency band gap performance of the photonic crystal can check surface wave and harmonic radiation,and increase the antenna gain.This paper briefly describes the working principle of the L/X dual-band feed,and also gives a design of a rectangular metal patch photonic crystal.The simulation shows the photonic crystal to be of characteristic of the frequency band gap.Putting the rectangular metal patch photonic crystal technology into the L/X dual-band feed design effectively checks the surface wave in Xband.Both the simulation and measured result indicate not only improving antenna pattern but also increasing the antenna gain.

关 键 词：光子晶体 频率带隙 L/X双频馈源 表面波 增益 

分 类 号：TN82[电子电信—信息与通信工程]