Accession Number:

ADA229698

Title:

Time-Domain Analysis of One-Dimensional Electromagnetic Scattering by Lossy Media (Tijddomein Analyse van Een-Dimensionale Verstrooiing door een Medium met Verliezen)

Descriptive Note:

Final rept.

Corporate Author:

FYSISCH EN ELEKTRONISCH LAB TNO THE HAGUE (NETHERLANDS)

Personal Author(s):

Report Date:

1990-10-01

Pagination or Media Count:

52.0

Abstract:

A study was performed to investigate the electromagnetic scattering in the time domain by a plane interface between two half-spaces. One half-space is assumed to be vacuum, while the other half-space is homogeneous and consists of lossy material. The incident field is assumed to be a uniform plane wave. Hence, this study addresses the one-dimensional scattering problem. Both horizontal and vertical polarization of the incident field are addressed. Starting with the equations for the reflected and transmitted waves in the S- or laplace-domain, corresponding time-domain expressions are obtained by applying the inverse laplace transform analytically. These time-domain results are in closed form, i.e. are given in terms of elementary functions or integrals of elementary functions. Numerical results are presented for the scattering of a unit-step and a Nuclear ElectroMagnetic Pulse NEMP, using the derived time-domain expressions. The numerical implementation uses a time-marching procedure. Netherlands.

Subject Categories:

  • Optics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE