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Scattering of evanescent and radiative fields of a Gaussian beam by a perfect electromagnetic conductor cylinder

ABDUL GHAFFAR1,2,* , MAJEED A. S. ALKANHAL3

Affiliation

  1. Department of Electrical Engineering, King Saud University, Riyadh, Saudi Arabia
  2. Department of Physics, University of Agriculture, Faisalabad, Pakistan
  3. Department of Electrical Engineering, King Saud University, Saudi Arabia

Abstract

The scattering of a Gaussian beam by a perfect electromagnetic conductor (PEMC) cylinder is analyzed using plane wave spectrum method. The PEMC material is characterized by a single parameter , whose zero and infinite value-limits reduce to the perfect magnetic conductor (PMC) and the perfect electric conductor (PEC), respectively. The presented analysis examined the effect of the evanescent beam in the total scattering. It is found that an evanescent wave scatters from the PEMC cylinder and partially converted into radiation. The effects of the scattering angle, the admittance parameter, and the beam width of the Gaussian beam on the co-polarized and the cross-polarized components of the scattered fields have been explained. The obtained results for the cases of (PEC) and (PMC) compared very well with the published results. Result comparison with published data for both a Gaussian-beam and a plane-wave incidence is also presented..

Keywords

Scattering, Perfect Electromagnetic Conductor, Gaussian beam, Cylinder, Evanescent fields.

Submitted at: May 2, 2014
Accepted at: May 15, 2014

Citation

ABDUL GHAFFAR, MAJEED A. S. ALKANHAL, Scattering of evanescent and radiative fields of a Gaussian beam by a perfect electromagnetic conductor cylinder, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 5-6, pp. 645-650 (2014)