Study of annular ring patch antennas on anisotropic substrates by WCIP method

A Wave Concept Iterative Procedure (WCIP) based on transverse waves formulation is presented. This method is applied to analyze annular microstrip patch antennas on anisotropic substrates. The use of FFT algorithm to define a fast modal Fourier transform results in accurate solutions with significant savings in computation time and memory requirements. WCIP results are compared with the HFSS simulation data and a good agreement is verified.