Spectral Domain analysis of Retangular Microstrip Patch Antenna on a Uniaxial Substrate with an Airgap and Superstrate

초록

Dielectric cover effects of retangular microstript patch antenna on uniaxial substrates with airgap are studied. First, we derive Dyadic Green function for selected anisotropic material by constitutive relation and then formulate integral equations of electric fields using Fourier transform in space region. Using Galerkin's moment method, we discretize the electric field integral equations into the matrix form and select sinusoidal functions as basis functions. We verify the validity of numerical results and compare the results with existing ones in showing a good agreement between them. When the dielectric cover thickness is varied, the resonant frequencies in the variation of air gap, patch length and permittivity of superstrate are presented and analyzed.