光子晶体Vlasov天线辐射特性研究  

Radiation characteristic of photonic-band-gap Vlasov antenna

作　　者：银燕[1] 郑秋容[2] 张辉[2] 林宝勤[2] 袁乃昌[2] 

机构地区：[1]国防科学技术大学理学院应用物理系 [2]国防科学技术大学电子工程学院电子技术系,长沙410073

出　　处：《强激光与粒子束》2006年第9期1539-1543,共5页High Power Laser and Particle Beams

基　　金：国家安全重大基础研究项目资助课题(51307);国家863计划项目资助课题

摘　　要：通过在Vlasov天线口径上加装金属面,再在金属面上环绕天线口径排布金属圆柱构成光子晶体,设计出一种新型的光子晶体Vlasov天线。数值仿真及实验结果均表明,光子晶体的带隙特性改善了天线的辐射特性,使得E面上的最大增益在工作频段内平均提高了2.43 dB。A novel photonie-band-gap（PBG） Vlasov antenna is designed. The antenna is surrounded by a metallic PBG structure which is formed by square arrays of metal posts. The lowest global band gap of the two-dimensional PBG structure is determined numerically, and the gap is used to reflect and focus the antenna radiation. By numerical computation and experimental measurement, the radiation patterns of the PBG Vlasov antenna have been presented. Moreover, the numerical and experimental results both show that the maximum gain of the PBG antenna has a 2-3 dB addition.

关 键 词：光子晶体 高功率微波 Vlasov天线 辐射特性 

分 类 号：TN820[电子电信—信息与通信工程] O43[机械工程—光学工程]