近地短波鱼骨天线矩量法建模及应用  

Moment method modeling and application for shortwave fishbone antennas above ground

作　　者：张小林[1] 高火涛[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《电波科学学报》2007年第2期281-285,共5页Chinese Journal of Radio Science

基　　金：国家高科技发展计划资助项目(2001AA631050)

摘　　要：结合等效电路理论和离散复镜像方法,对架设在有耗地面上方的水平鱼骨天线进行矩量法建模,计算了其短波段内的输入阻抗、方向图、效率和增益。在分析双鱼骨天线的基础上,从抗极化衰落的角度提出并分析了一种正交鱼骨天线。仿真结果表明,所用方法准确地考虑了有耗地面的影响以及各振子间的互相耦合,具有很高的精度。Combinated with the equivalent circuit theory and discrete complex image technology, the moment method is used to model the horizontal fishbone antennas over the lossy ground, and the computational results of input impedance, pattern, efficiency and gain of the fishbone antenna are carried out. From the view of reducing polarization mismatch, an orthogonal fishbone antenna is designed on the basis of analysis of double-fishbone antenna. The results show that the presented method has high accuracy because of taking accurately into account the influence of lossy ground and mutual coupling of dipoles.

关 键 词：宽带天线 鱼骨天线 矩量法 离散复镜像法 

分 类 号：TN82[电子电信—信息与通信工程]