Scattering by an indentation satisfying a dyadic impedance boundary condition

Author

Asvestas, John S.

Author_Institution

RF Sensors Branch, Naval Air Warfare Center, Patuxent River, MD, USA

Volume

45

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

28

Lastpage

33

Abstract

We derive a pair of boundary integral equations for the problem of scattering of an electromagnetic wave by an indentation in a perfectly conducting screen. The wall of the indentation obeys a dyadic impedance boundary condition. The unknowns are the electric current density on the wall of the indentation and the total tangential magnetic field in the opening of the indentation. We also derive integral representations for the fields everywhere in free space, including the far-field region. In all cases, the integrals involved extend over finite surfaces only

Keywords

conductors (electric); current density; electric impedance; electromagnetic wave scattering; integral equations; magnetic fields; EM wave scattering; boundary integral equations; dyadic impedance boundary condition; electric current density; far-field region; finite surfaces; free space; indentation opening; indentation wall; integral representations; perfectly conducting screen; total tangential magnetic field; Books; Boundary conditions; Calculus; Current; Electromagnetic scattering; Geometry; Integral equations; Magnetic fields; Radio frequency; Surface impedance;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.554237

Filename

554237