Fast Convergence of 2D DWT-WCIP Method Applied to Study a Complex FSS Structure

The wave concept iterative procedure (WCIP) is a powerful tool dedicated to the numerical analysis of RF circuits. The big problem of this method is that the required calculation time becomes higher when the circuit’s complexity increases, that’s to say for circuits with huge mesh surface. In this paper, we use a fast WCIP method based on 2D Discrete Wavelet Transform (2D DWT) to study a frequency selective surface, FSS, having a U-geometry. This 2D DWT technique is used to optimize the amount of information manipulated by the iterative process in order to get a fast convergence time.