Abstract
Calculation of dyadic Green's functions in a fast and convergent manner is a crucial step during analysis of conformal microstrip patch antenna. In the present study, spectral domain dyadic Green's functions and surface current density for cylindrical structure have been calculated. The study demonstrates the behavior of Green's function w.r.t wave numbers in x and z direction. We have also analyzed the behavior of Green's functions for increasing cylinder radius. It is observed that the spectral domain Green's functions show more oscillatory behavior with increasing cylinder radius and thus, the full wave analysis of microstrip antenna becomes non-convergent. The study, therefore, demonstrates the difficulty in full wave analysis of microstrip patch antenna for increasing cylinder radius.
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