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. An iterative approach which was recently applied to approximate the reflectionand scattering coefficients of transmission line ports is analyzed. Theiterative solution for the current on an infinite wire above ground iscompared to the exact solution. The example is chosen since it is one of thefew problems where an exact solution exists. The wire is excited by a lumpedvoltage source or a plane wave. The convergence of the iterative approach isshown. It can be concluded that the zeroth iteration, which is the classicaltransmission line solution, coincides with the general transverseelectromagnetic mode. Furthermore, it is shown that the first iteration is avery good approximation of the radiation and leaky modes, that occur in theclose neighborhood around the lumped source.

Analysis of an Iterative Approach to Determine the Current on the Straight Infinite Wire Above Ground