【摘要】 采用电场积分方程,准确地计算了电大尺寸导体附近线天线的辐射方向图,利用快速多极子算法加速了整个迭代求解过程中的矩阵和矢量相乘.数值计算结果表明,这种结合预处理共轭梯度法、快速傅里叶变换以及后期迭代的快速多极子算法,其计算效率远远高于一般的矩量法,是一种非常有效的求解电大尺寸复杂电磁问题的方法.更多还原

【Abstract】 EFIE is used to obtain the strict and accurate radiation pattern, when the wire antenna is placed near a large conductor. In the solving process, the fast multipole method (FMM) is used to perform the matrixvector products and accelerate the resolution of the linear system. Numerical computing tests show that the FMM, which combines the Preconditioned Conjugate Gradients (PCG) method and the Fast Fourier Transform(FFT) and postiteration, is a most effective technique for solving the largescale EM problems.更多还原