【摘要】 该文利用直线法结合周期边界条件，分析微带传输线。与直线法结合吸收边界条件的常规方法相比，该文的做法可得到具有解析形式的特征值与特征矢，并且能够利用快速傅里叶变换来计算阻抗元素，从而大大提高计算效率。数值算例表明了方法的有效性。更多还原

【Abstract】 This paper analyses microstrip lines by using method of lines with periodicboundary conditions,Compared with the method of lines with absorbing boundary conditions, the eigenvalues and eigenvectors of the difference matrix possess the same closedforms for each laver.In the mean time,the fast Fourier transform mav be used to calculatethe impedance matrix elements。Consequently,the computing time is reduced considerably。The efficiency of this method is demonstrated by the numerical examples。更多还原