Diffraction by Canonical Metallic and Material-Coated Structures: A Review

Author

Volakis, J.L.

Author_Institution

Electr. & Comput. Eng. Dept., Ohio State Univ., Columbus, OH, USA

Volume

55

Issue

4

fYear

2013

fDate

Aug. 2013

Firstpage

21

Lastpage

31

Abstract

Keller´s landmark paper in 1962 formulated the Geometrical Theory of Diffraction (GTD). This was the beginning of a long process that brought the Geometrical Theory of Diffraction into practice, making it one of the most ubiquitous analysis methods in electromagnetics. This paper provides a personal historical trace of the Geometrical Theory of Diffraction: in particular, its further development in the 1970s and 1980s, and its realization into computer codes. The latter provided the first step for the analysis of complex realistic structures. The second half of the paper discusses the historical development of diffraction coefficients for impedance wedges using first- and higher-order generalized impedance boundary conditions.

Keywords

electromagnetic wave scattering; geometrical theory of diffraction; GTD; canonical metallic structures; computer codes; electromagnetics; generalized impedance boundary conditions; geometrical theory of diffraction; impedance wedges; material-coated structures; ubiquitous analysis; Boundary conditions; Coatings; Diffraction; High frequency; Impedance; Scattering; Surface impedance; Surface treatment; Electromagnetic diffraction; electromagnetic scattering; geometrical theory of diffraction;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/MAP.2013.6645135

Filename

6645135