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用精细积分法对含各向异性介质的波导不连续性问题进行了数值模拟与分析.从矢量波动方程相对应的单变量变分形式出发,推导出了含有各向异性介质波导横截面离散系数矩阵的表达式,引入对偶变量,在Hamilton体系下,利用精细积分法求出出口刚度矩阵,进行有限元拼装,求解了含各向异性介质的波导不连续性问题.算例表明了该方法的准确性和高效性.利用本文方法还讨论了介电系数和导磁系数张量的各个分量对波导传输特性的影响.
The problem of waveguide discontinuity with anisotropic media is numerically simulated and analyzed by using the precise integral method.According to the univariate variational form corresponding to the vector wave equation, the discrete coefficient of waveguide cross-section with anisotropic media is derived Matrix expression, the dual variable is introduced. Under the Hamilton system, the exit stiffness matrix is obtained by the precise integration method, and the finite element method is used to solve the waveguide discontinuity problem with anisotropic media. Accuracy and high efficiency.The influence of each component of the dielectric coefficient and the permeability coefficient tensor on the transmission characteristics of the waveguide is also discussed using this method.