COMPLEX IMAGE METHOD ANALYSIS OF A PLANE WAVE-EXCITED SUBWAVELENGTH CIRCULAR APERTURE IN A PLANAR SCREEN Academic Article

abstract

• A complex image method is presented for the analysis of a subwavelength circular aperture in a perfectly conducting screen of infinitesimal thickness illuminated by a plane wave. The method is based on the Bethe-Bouwkamp quasi static model of the aperture field and uses the spectral domain formulation as the point of departure. Closed-form expressions are obtained for the electromagnetic fields valid for all observation points. Sample numerical results demonstrate the accuracy and efficiency of the method for both normal and oblique illuminations, including an evanescent wave. In the latter case, the results show a circulating power flux and enhanced field confinement near the aperture.

authors

• Michalski, Krzysztof

published proceedings

• Progress In Electromagnetics Research B

author list (cited authors)

• Michalski, K. A.

citation count

• 5

complete list of authors

• Michalski, Krzysztof A

publication date

• January 2011

publisher

• The Electromagnetics Academy  Publisher

published in

• Progress In Electromagnetics Research B  Journal

Digital Object Identifier (DOI)

• 10.2528/pierb10101602

start page

• 253

end page

• 272

volume

• 27

issue

• 27

URL

• http://dx.doi.org/10.2528/pierb10101602