时域开槽天线阵列的接收特性  

Receiving characteristics of time domain slot antenna array

作　　者：张伟军[1] 袁乃昌[1] 张伟[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院微波中心,长沙410073

出　　处：《强激光与粒子束》2006年第9期1527-1530,共4页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：利用自建的时域测量系统对接收阵元数不同、相邻阵元间距不同、阵元数相同接收方向不同的开槽天线阵列接收电场进行了测试。时域天线的时域波形、归一化能量方向图、归一化峰值方向图的分析结果表明:时域天线方向性具有时变性,与观察方向和时间段有关,接收波形峰值随主接收方向偏离主轴程度的增大而减小;阵列某一面的方向图仅与该面的阵元数及相邻阵元间距有关,与其它面的阵列无关;阵列单元越多,相邻单元间距越大,方向图波束越窄。The receiving electric fields of the slot antenna array with different element number and different adjcent element spacing were measured using self-built time domain measurement system. The time domain waveform, normalized energy pattern and normalized peak-amplitude pattern were presented. The analysis results show that the amplitude of the received waveform becomes smaller with the increase of the observation angle off boresight. The antenna array characteristics in some plane are concerned with the elements number and adjacent element spacing of this plane. The more the integrated elements are and the larger the adjcent elements spacing is, the narrower the directional pattern beamwidth is.

关 键 词：时域天线 接收特性 归一化能量方向图 归一化峰值方向图 开槽天线阵列 

分 类 号：TN823.24[电子电信—信息与通信工程]