多层快速多极子技术分析微带天线

Multilevel fast multipole approach for analysis of microstrip antennas

分析了电大尺寸的微带天线辐射方向图。从混合位积分方程出发,将空域格林函数写成多层快速多极子技术能够适用的形式,从而使得大尺寸的天线问题得以快速并精确地分析。文中还比较了不同迭代方法在分析时的效率。算例表明,灵活的一般最小余量法(FGMRES)的效率比其他方法高得多。

The radiation patterns from microstrip antennas with electrically large size were analyzed. The paper derived from the mixed-potential integral equation and expanded the space-domain Green＇s function for planar layer structure into the form which can be adopted by the multiple level fast multipole algorithm, then the problems are solved faster and accurately. The paper also compares the efficiency of several different iterative schemes, and the numerical results display that the flexible generalized minimal residual （FGMRES） algorithm is a most efficient one.