Ultra-wideband radiation and scattering from a thin filament

The problem of a pulsed electric current source comprising an infinitely long filament has been solved using both time-domain and frequency-domain techniques. Also formulated is the problem of an infinitely long electrically conducting (PEC) thin cylinder, illuminated by a uniform normally impinging, pulsed plane wave excitation. Computed results for both problems illustrating the radiated field, induced current, and scattered field are presented, and physical interpretations of the mathematical formulae and numerical data are provided. Numerical results based on time-domain and frequency domain formulations, for each problem, are compared.