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Uniform diffracted fields of the extended theory of BDW from the circular aperture on a perfectly magnetic conductive surface.

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Bibliographic Details
Title: Uniform diffracted fields of the extended theory of BDW from the circular aperture on a perfectly magnetic conductive surface.
Authors: Altınel, Mustafa1 (AUTHOR) altinelmust@gmail.com, Yalçın, Uğur2 (AUTHOR) uyalcin@uludag.edu.tr
Source: COMPEL. 2024, Vol. 43 Issue 2, p269-281. 13p.
Subjects: Fresnel function, Wave diffraction, Statistical correlation
Abstract: Purpose: This paper aims to examine the uniform diffracted fields from a perfectly magnetic conductive (PMC) surface with the extended theory of boundary diffraction wave (BDW) approach. Design/methodology/approach: Miyamoto and Wolf's symbolic expression of the vector potential was used in the extended theory of BDW integral. This vector potential is applied to the problem, and the nonuniform field expression found was made uniform. Here, the expression is made uniform, using the detour parameter with the help of the asymptotic correlation of the Fresnel function. The BDW theory for the PMC surface extended the diffracted fields, and the uniform diffracted fields were calculated. Findings: The field expressions obtained were interpreted with the graphs numerically for different aperture radii and observation distances. It has been shown that the BDW is continuous behind the diffracting aperture. There does not exist any discontinuity at the geometrically light-to-shadow transition boundary, as is required by the theory. Originality/value: The results were graphically compared with diffracted fields for other surfaces. As far as we know, the uniform diffracted fields from the circular aperture on a PMC surface were calculated for the first time with the extended theory of the BDW approach. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Purpose: This paper aims to examine the uniform diffracted fields from a perfectly magnetic conductive (PMC) surface with the extended theory of boundary diffraction wave (BDW) approach. Design/methodology/approach: Miyamoto and Wolf's symbolic expression of the vector potential was used in the extended theory of BDW integral. This vector potential is applied to the problem, and the nonuniform field expression found was made uniform. Here, the expression is made uniform, using the detour parameter with the help of the asymptotic correlation of the Fresnel function. The BDW theory for the PMC surface extended the diffracted fields, and the uniform diffracted fields were calculated. Findings: The field expressions obtained were interpreted with the graphs numerically for different aperture radii and observation distances. It has been shown that the BDW is continuous behind the diffracting aperture. There does not exist any discontinuity at the geometrically light-to-shadow transition boundary, as is required by the theory. Originality/value: The results were graphically compared with diffracted fields for other surfaces. As far as we know, the uniform diffracted fields from the circular aperture on a PMC surface were calculated for the first time with the extended theory of the BDW approach. [ABSTRACT FROM AUTHOR]
ISSN:03321649
DOI:10.1108/COMPEL-06-2023-0223