Abstract

The radiation fields of transverse electromagnetic (TEM) horn as a nuclear electromagnetic pulse(NEMP) radiating-wave simulator, are simulated by parallel finite-difference time-domain(FDTD) method. The EMP's effects of different dielectric load are numerical studied and analyzed. The results show that comparing with the traditional TEM horn antenna the peak value of $E_{z}$ increases or decreases, but the FWHM never widen as TEM horn loaded by dielectric.

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