【摘要】 本文利用直线法结合周期边界条件,分析了双层多导体微带传输线的色散特性,与直线法结合吸收边界条件的常规方法相比,本文的做法可得到具有解析形式的特征值与特征矢,并且能够利用快速付里叶变换来计算阻抗元素,从而大大提高计算效率.计算实例证明了方法的正确性和有效性.最后给出了几种不同结构微带传输线的色散特性.更多还原

【Abstract】 This paper analyses double layer and multiconductor microstrip transmission lines by using method of lines with periodic boundary conditions, the eigenualues and eigenvectors of the difference matrix possess the same closed forms for each layer. In the mean time, the fast Fourier transform may be used to calculate the impedance matrix elements. Consequently, the computing time is reduced significantly. The efficiency of this method is demonstrated by the numerical examples. The dispersion characteristics of transmission lines are given.更多还原