A Hallen-type integral equation for symmetric scattering from lossy circular disks

Author

Rothwell, Edward J. ; Cloud, Michael J.

Author_Institution

Dept. of Electr. Eng., Michigan State Univ., East Lansing, MI, USA

Volume

40

Issue

8

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

920

Lastpage

925

Abstract

A rigorous technique is presented for calculating the current induced on a thin lossy disk by rotationally symmetric sources, and the resulting scattered field. A Hallen-type integral equation is developed for the current using the magnetic vector potential, and it is solved by the method of moments. It is shown that the diffraction lobes usually associated with radiation above a finite circular ground plane can be reduced dramatically by the addition of loss. Application to a quarter-wave monopole radiating above a finite circular perfectly conducting ground plane shows good agreement with experiment

Keywords

electromagnetic wave scattering; integral equations; Hallen-type integral equation; current distribution; diffraction lobes; electromagnetic scattering; finite circular perfectly conducting ground plane; induced current calculation; lossy circular disks; magnetic vector potential; method of moments; quarter-wave monopole; rigorous technique; rotationally symmetric sources; symmetric scattering; Aperture antennas; Clouds; Current distribution; Electromagnetic radiation; Integral equations; Light scattering; Moment methods; Physical theory of diffraction; Surface impedance; Wire;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.163429

Filename

163429