Leaky wave antennas with specific profiles are analyzed and their radiation properties are compared ; the conclusions based on the present analysis are of practical significance for the design of these kinds of leaky wave antennas 文中选取了几种介质栅形状漏波天线进行研究，并对它们的辐射特性进行了比较分析；所得结论对该类全向漏波天线的设计具有实际意义。
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The novel three - dimensional finite - difference approximations of mur ' s absorbing boundary conditions are also presented in frequency - domain . then the ddm based on fdfd is investigated in the applications of three - dimensional electromagnetics problems . and it is used to analyze the leaky wave antenna based on image nonradiative dielectric ( nrd ) guide 最后，阐述了maxwell方程组和划分区域的despres传输条件的频域差分格式建立，在截断边界上构造了三维频域mur条件的差分近似，探讨了基于频域有限差分的区域分解法在三维电磁问题中的应用实现，并将该算法用于分析一种基于nrd波导结构的漏波天线。
