Abstract

The main difficulty in the application of the full wave discrete image method in two-dimensional problems is discussed in this paper. The comparison shows that the extraction of surface wave poles is necessary for two-dimensional problems. To keep the robustness, the matrix pencil method is applied. The calculated propagation characteristics of a coplanar waveguide (CPW) structure show the validity of the theory. The current and field distributions of this CPW are also given.

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