Resonant Frequency Analysis Of Annular Ring Microstrip Patch On Uniaxial Medium Via Hankel Transform Domain Immittance
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In this study, resonant frequency of annular-ring mi- crostrip patch on uniaxial medium is determined using equivalent mod- els of the structure obtained in Hankel Transform Domain depending on TE and TM mode decomposition. For the simpliflcation of the tensor form formulations, equivalent matrix operators are deflned in cylindrical coordinates instead of the difierential ones. Then, eigen- value problem is solved by the application of the moment method and obtained resonant frequency characteristics are compared with that of the isotropic case for difierent anisotropy ratio values and structural parameters. Equivalent circuit models for the structure having mul- tilayered substrates and superstrates are given in order to be used in the following studies on uniaxially anisotropic circular type microstrip patches.