Analysis of Feasibility of a New Vertically Polarized EMP Radiating-Wave Simulator

A new vertically polarized electromagnetic pulse (EMP) radiating-wave simulator (called “new simulator”) with upper cone, lower cone and an infinite PEC pad is firstly designed for the convenience of construction of the simulator. Then, the radiating fields of new simulator are calculated by finite-difference time-domain (FDTD) method. And the comparisons of waveforms, the peak-values, rise-times and full width at half maximum (FWHM) of the vertical components of radiating electric fields in time domain at testing points of new simulator with those of the Normal simulator are given and analyzed in this paper. The analysis of feasibility about new simulator is offered finally. The results show that, there's difference between the peak-values of radiated fields of New simulator and those of Normal simulator; Both rise-times and FWHM of electric field at some testing points (such as near the PEC pad) of New simulator will meet technical requirements of MIL-STD-461E standard, if its voltage source's FWHM increased; New simulator may not afford enough continuous space where the electric fields' rise-time and FWHM meeting technical requirements of MIL-STD-461E standard, and it is not recommended to be used in practice.