Simulation of the Effect of Inhomogeneities in TEM Transmission Cells using the FDTD-Method

• The finite difference time domain (FDTD)-method is applied to model transverse electromagnetic (TEM) transmission cells in three dimensions. The perturbation of the TEM-mode and the standard field distribution in the TEM-cell, due to inhomogeneous materials placed inside the cell cavity, is evaluated. Particularly, the dependence of the disturbance of the TEM-mode on the dimensions of the material and its position in the TEM-cell is studied. Also the absorption of the electromagnetic fields in the lossy materials, placed in the cell, is calculated.

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