Abstract: The method of moments (MOM) in conjunction with the asymptotic waveform evaluation (AWE) technique is applied to predict the radar cross-section (RCS) of an arbitrarily shaped twodimensional (2-D) perfect electric conductor (PEC) cylinder over a frequency band. The electric field integral equation (EFIE) of a 2-D PEC cylinder is solved by using MOM to obtain the equivalent surface current on the PEC cylinder. In the AWE technique, the equivalent surface current at a given frequency is expanded in the desired frequency band in a Taylor's series. The Taylor's series coefficients are then matched via the Pade approximation to a rational function. By using the rational function, the surface current is obtained at any frequency within the frequency range, which is in turn used to calculate RCS of the 2-D PEC cylinder. It was observed that AWE could result in considerable CPU time saving.

Key words: MOM, AWE technique, RCS, 2-D PEC, fast frequency sweeping