Analytical expressions for the scattering by an electrically small circular aperture on an infinite conducting ground plane

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Near-field analytical expressions for the plane-wave scattering from an electrically small circular aperture on an infinite conducting screen were derived based on the Bethe-Bouwkamp (BB) quasi-static model. The formulation of the problem implements the equivalence principle and image theory in order to express the scattered fields in the near zone in terms of the vector potential F→. The vector potential is defined as a surface integral of the first-order BB approximation of the magnetic current on the aperture multiplied by the governing free-space Green's function. The free-space Green's function was expanded using Taylor series, thus producing integrals that can be evaluated analytically for the case where the observation point resides on the axis of the aperture. Results for the scattered electric field along the axis of the aperture, using the obtained closed-form near-field expressions, were validated against recently published results in the literature.

Original languageEnglish
Title of host publication2016 10th European Conference on Antennas and Propagation, EuCAP 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788890701863
DOIs
Publication statusPublished - 31 May 2016
Event10th European Conference on Antennas and Propagation, EuCAP 2016 - Davos, Switzerland
Duration: 10 Apr 201615 Apr 2016

Other

Other10th European Conference on Antennas and Propagation, EuCAP 2016
CountrySwitzerland
CityDavos
Period10/04/1615/04/16

Keywords

  • Electromagnetic scattering
  • electromagnetic theory
  • scattering by aperture

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    Christou, M. A., & Polycarpou, A. C. (2016). Analytical expressions for the scattering by an electrically small circular aperture on an infinite conducting ground plane. In 2016 10th European Conference on Antennas and Propagation, EuCAP 2016 [7481552] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EuCAP.2016.7481552