Hybrid Use of AWE With Spatial Matrix Interpolation in the Analysis of Printed Structures

In the asymptotic waveform evaluation (AWE) method, most of the CPU time is spent in the generation of the method of moment (MoM) matrix and its derivatives. In this letter, the hybrid use of the AWE method with the spatial interpolation of the MoM matrix is introduced to reduce the matrix generation time. The numerical results demonstrate the efficiency and the accuracy of the proposed technique.