单极性亚纳秒脉冲激励口径的辐射特性  

Radiant characteristics of subnanosecond and monopolar pulse-excited aperture

作　　者：刘小龙[1] 王向晖[1] 汪文秉[1] 蒋延生[1] 

机构地区：[1]西安交通大学微波研究所

出　　处：《强激光与粒子束》2003年第11期1103-1106,共4页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：　通过解析积分运算,获得了阶跃脉冲激励口径天线瞬态辐射场的解析表达式,分析了辐射电场脉冲的持续时间与口径尺寸、观察距离及观察角度的关系。研究了在高斯脉冲激励下口径辐射场特性的分析方法,并探讨了脉冲口径天线主轴方向上辐射场的分区依据。The radiating characteristics of apertures excited by step and Gaussian pulses are presented in this paper. The relationships of the incoming pulse width, the size of the aperture, and the location of the observer are analyzed. The radiating characteristics of apertures excited by Gaussian pulse are thoroughly investigated. Along the radiating axis, several regions, each bearing somehow unique radiating properties, can be divided as radiating far-field region, transit region, and near-field region in order to describe the behavior of an ultra-wideband (UWB) aperture antenna.

关 键 词：超宽带天线 天线口径 阶跃脉冲 高斯脉冲 

分 类 号：TN788[电子电信—电路与系统]