BCG-FFT analysis of microstrip structure in multilayered media

Abstract

The biconjugate gradient-fast Fourier transform (BCG-FFT) method is a very efficient and useful technique to analyze microstrip structure. The authors extend the BCG-FFT method to multilayered media case using spatial domain multilayered media Green's functions that can be obtained with the help of discrete complex image method (DCIM). As application, the resonant behaviours of microstrip antenna in multilayered media are simulated using the present method combined with interpolation/extrapolation techniques. The numerical experiments for several microstrip antennas show the efficiency and accuracy of the present method.