对称GTEMCell单模工作频率上限的计算

CALCULATIONOFTHECUTOFFFREQUENCYOF THEFIRSTHIGHER-ORDERLMODEINSYMMETRICGTEMCELL

采用坐标变换将任意过渡对称千兆赫横电磁传输室（ＧＴＥＭＣｅｌｌ）的三维本征值问题变换为二维本征值问题。再采用数值方法求解二阶非线性偏微分方程的本征值，得到对称ＧＴＥＭｃｅｌｌ单模工作频率的上限。理论计算值与实验值吻合较好。

The 3D boundary- value problem on symmtric GTEM cell is translated into a 2D boundary- value problem using coordinate transformation,and then the derived second order nonlinear partial differential equation is solved numerically, the cut off the calculated frequency agrees to the measuredone,