Scattering and Transmission of Pulsed Electromagnetic Waves with the CWA

general approach to solve the scattering of pulsed fields is presented. The whole spectrum of the source field is considered, expressed as the product of a space spectrum and a frequency spectrum. Space spectrum is relevant to the spatial nature of the incident field, as a plane wave or a line source, whereas the frequency one deals with shape of the excitation pulse in the time-doma in. The formulat ion is applied to the Cylindrical Wave Approach, a method to solve the scattering by buried circular cross-section cylinders. This scattering technique, formulated for a monochromatic excitation, is based on spectral integrals to define cylindrical waves as used basis functions ofthe scattered fields. The Cylindrical Wave Approach is extended to a pulsed source applying an iterative method.