Aperture theory and the equivalence principle

Author

Booysen, Adriaan J.

Author_Institution

Grintek Antennas, Centurion, South Africa

Volume

45

Issue

3

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

29

Lastpage

40

Abstract

Aperture theory in antenna courses is a topic that is usually dealt with fairly superficially at undergraduate and graduate levels. The paper takes a fresh look at aperture theory and its relationship to the equivalence principle. Some subtleties and possible misconceptions are discussed. Emphasis is placed on the mathematical analysis of the process by which the aperture is short-circuited, and the subsequent interpretation of various approximations to the aperture fields.

Keywords

antenna theory; aperture antennas; approximation theory; electromagnetic coupling; electromagnetic field theory; electromagnetic wave diffraction; electromagnetic wave scattering; mathematical analysis; antenna theory; aperture antennas; aperture theory; electromagnetic coupling; electromagnetic diffraction; electromagnetic scattering; equivalence principle; mathematical analysis; Africa; Antenna theory; Aperture antennas; Aperture coupled antennas; Conductors; Current density; Electromagnetic scattering; Horn antennas; Magnetic analysis; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/MAP.2003.1232161

Filename

1232161