The perturbation to fields and currents by rounding corners on a scatterer

Paul D. Smith; Audrey J. Markowskei

doi:10.1109/ICEAA.2019.8878993

The perturbation to fields and currents by rounding corners on a scatterer

Paul D. Smith, Audrey J. Markowskei

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

When a perfectly electrically conducting two-dimensional scatterer, which is smooth except at a finite number of sharp corner points, is illuminated by an E-polarised electromagnetic plane wave, the surface current density exhibits singularities at those corner points, whilst in the H-polarised case the surface density exhibits singularities in its derivative at those points. Once the corners are rounded, the surface density becomes nonsingular. It is of physical interest to examine the impact of this rounding upon the surface current and other observed physical quantities such as the far-field, as the rounding becomes more pronounced.

Original language	English
Title of host publication	Proceedings of the 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
Subtitle of host publication	ICEAA '19 21st edition
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1048
Number of pages	1
ISBN (Electronic)	9781728105635, 9781728105628
ISBN (Print)	9781728105642
DOIs	https://doi.org/10.1109/ICEAA.2019.8878993
Publication status	Published - 2019
Event	21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019 - Granada, Spain Duration: 9 Sept 2019 → 13 Sept 2019

Conference

Conference	21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019
Country/Territory	Spain
City	Granada
Period	9/09/19 → 13/09/19

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10.1109/ICEAA.2019.8878993

Cite this

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title = "The perturbation to fields and currents by rounding corners on a scatterer",

abstract = "When a perfectly electrically conducting two-dimensional scatterer, which is smooth except at a finite number of sharp corner points, is illuminated by an E-polarised electromagnetic plane wave, the surface current density exhibits singularities at those corner points, whilst in the H-polarised case the surface density exhibits singularities in its derivative at those points. Once the corners are rounded, the surface density becomes nonsingular. It is of physical interest to examine the impact of this rounding upon the surface current and other observed physical quantities such as the far-field, as the rounding becomes more pronounced.",

author = "Smith, {Paul D.} and Markowskei, {Audrey J.}",

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note = "21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019 ; Conference date: 09-09-2019 Through 13-09-2019",

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Smith, PD & Markowskei, AJ 2019, The perturbation to fields and currents by rounding corners on a scatterer. in Proceedings of the 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA): ICEAA '19 21st edition. Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 1048, 21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019, Granada, Spain, 9/09/19. https://doi.org/10.1109/ICEAA.2019.8878993

The perturbation to fields and currents by rounding corners on a scatterer. / Smith, Paul D.; Markowskei, Audrey J.
Proceedings of the 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA): ICEAA '19 21st edition. Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2019. p. 1048.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AB - When a perfectly electrically conducting two-dimensional scatterer, which is smooth except at a finite number of sharp corner points, is illuminated by an E-polarised electromagnetic plane wave, the surface current density exhibits singularities at those corner points, whilst in the H-polarised case the surface density exhibits singularities in its derivative at those points. Once the corners are rounded, the surface density becomes nonsingular. It is of physical interest to examine the impact of this rounding upon the surface current and other observed physical quantities such as the far-field, as the rounding becomes more pronounced.

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BT - Proceedings of the 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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The perturbation to fields and currents by rounding corners on a scatterer

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