用MoM-UTD混合方法求解电大导体上天线间的隔离度  

A hybrid MoM-UTD method for analyzing isolation between antennas on an electrically large conductive surface

作　　者：刘子梁[1] 张玉[1] 梁昌洪[1] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2005年第6期861-864,共4页Journal of Xidian University

基　　金：国家自然科学基金资助项目(69931030)

摘　　要：电大系统影响下的天线间的隔离度单纯由矩量法(MoM)很难解决,一致性几何绕射理论(UTD)虽是高频方法,但其精度不够.将MoM和UTD相结合,并结合互易定理,有效解决了电大物体的问题,计算了电大导体圆柱面影响下的线天线间的隔离度问题,给出了用单纯MoM难以得到的频率较高的扫频结果.A hybrid MoM-UTD technique is employed to accurately calculate the isolation between wire antennas mounted on a complex electrically large conductive surface combined with the reciprocity theorem. It is difficult to analyze the isolation of antennas influenced by the electrically large system only by using the method of moment （MoM）. The uniform geometrical theory of diffraction （UTD） is a kind of high frequency method, and however, it has poor accuracy. The combination of MoM and UTD takes the advantages of both the methods and efficiently solves the problem of an electrically large object. The isolation between wire antennas is computed with the influence of the electrically large cylindrical surface being considered and sweep-frequency results are obtained, which can not be computed only by MoM.

关 键 词：矩量法 一致性几何绕射理论 隔离度 线天线 电大物体 

分 类 号：TN82[电子电信—信息与通信工程]