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中文摘要：
采用体积积分方程矩量法（VIE-MoM）结合多层快速多极子算法（MLFMA）解决任意形状多层非均匀介质天线罩电磁性能的快速精确分析问题。首先借助三维CAD软件几何建模技术及网格离散技术,建立了介质天线罩的实体模型并用四面体单元离散,接着利用MLFMA/VIE-MoM在介质区域内建立矩阵方程,计算出天线罩罩体区域的体极化电流,最终得到在罩体影响下的天线的远场辐射特性和功率传输效率。数值结果表明,采用VIE-MoM结合MLFMA来分析复杂结构介质天线罩电磁性能可明显节省内存需求,提高计算效率和计算精度。
英文摘要：
The fast algorithms are implemented in the method of moment （ MoM ） based on volume integral equation （VIE） to solve the electromagnetic problems of complex dielectric radome with arbitrary shape and multi-layers materials fast and accurately. Firstly, the geometry of conic, tangent ogive and Von Kannan radomes are modeled quickly and then meshed by tetrahedron with the help of 3 dimensional CAD efficiently. Then the coefficients of electric flux density in the dielectric region are solved by MLFMA/VIE-MoM. Finally the far field radiation characteristics of wire and aperture antennas in the presence of the radomes are investigated. Numerical results show that using MLFMA/VIE-MoM to analyze EM characteristics of the complex dielectric radomes can greatly reduce the required memory units of computer and improve the efficiency and precision.
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