Abstract

This paper presents the formulation to apply the discrete mode matching (DMM) method to analyze microstrip multilayer structures, such as transmission lines and antennas conformed to cylinders. The main advantage of the method is the need of discretization only along the azimuthal and the axial directions by sampling the fields and current densities in the interfaces between dielectric layers. The solution in the radial direction is obtained analytically with the dyadic Green's function, which is calculated using the full-wave equivalent circuit (FWEC) in the spectral domain. The method is used to analyze two structures: a multilayer conformal transmission line and a conformal antenna. Validation with the commercial software HFSS has been done and good agreement between the results has been observed.

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