Abstract
A full-wave analysis for determining the resonant frequency and quality factor of a circular patch microstrip antenna printed on a uniaxial anisotropic substrate is presented. Green’s functions of the structure are determined in Hankel transform domain (HTD) using Hertz potential vectors. Galerkin’s method, together with parsval’s relation in Hankel transform domain is then applied to compute the resonant frequency and quality factor. Wave equation is solved in cylindrical coordinates for the structure to estimate the basis function. The numerical results show that there is a substantial deviation in calculated resonant frequency when substrate dialectric anisotropy is considered. The variations of resonant frequency and quality factor of the structure for several values of substrate thickness and patch radius are presented.
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