volume | PIER Journals

2007-01-11

Efficient Near-Field Computation for Radiation and Scattering from Conducting Surfaces of Arbitrary Shape

Khalid Fawzy Ahmed Hussein

Professor Khalid Fawzy Ahmed Hussein

Microwave Engineering Department

Electronics Research Institute

Egypt

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, Vol. 69, 267-285, 2007

doi:10.2528/PIER07010302

Abstract

A new algorithm for numerical evaluation of the fields in the near zone of conducting scatterers or antennas of arbitrary shape is developed in the present work. This algorithm is simple, fast, robust andis basedon a preceding calculation of the current flowing on the conducting surface using the electric filed integral equation (EFIE) technique that employs the Rao-Wilton-Glisson (RWG) basis functions. To examine the validity of the near field computational algorithm developed in the present work, it is applied to calculate the near fieldd ue to plane wave incidence on a variety of conducting scatterers. The solution obtainedfor the fields in the near zone is found to satisfy the boundary conditions on both planar and curved scatterer surfaces and the edge condition for structures possessing edges or corners. The solutions obtainedusing the new algorithm are compared with those obtainedusing some commercial packages that employ the finite-difference-time-domain (FDTD). The algorithm defined in the present work gives results which are more accurate in describing the fields near the edges than the results obtained using the FDTD.

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Khalid Fawzy Ahmed Hussein, "Efficient Near-Field Computation for Radiation and Scattering from Conducting Surfaces of Arbitrary Shape," , Vol. 69, 267-285, 2007.
doi:10.2528/PIER07010302

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