Calculation of the radiation of a waveguide-horn antenna excited by short electromagnetic pulses

Abstract

A method for the numerical calculation of the electromagnetic field radiated into free space by a waveguide-horn antenna excited by short ultra-wideband electromagnetic pulses (UWB EMPs) is described. Calculations are based on the method of nonstationary waveguide equations, which was proposed earlier, and the concept of a virtual electromagnetic waveguide. It is shown that the proposed approach allows calculation of the “forward radiation field” with control of the error in the obtained results and ensures a high accuracy of calculations.