Analysis of aperture blockage in reflector antennas by using obstacle-located blockage currents

Author

Moldsvor, Arild ; Kildal, Per-Simon

Author_Institution

Div. of Network Theory, Chalmers Univ. of Technol., Gotenburg, Sweden

Volume

40

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

100

Lastpage

102

Abstract

An improved method is presented to account for blockage effects in the analysis of reflector antennas. Commonly this is done by introducing shadows on the reflector surface according to the location of the obstacles when performing the physical optics integration. By using physical optics blockage currents located at the blocking obstacle instead of at the main reflector surface, the effect of the different locations in the axial direction is accurately accounted for. This can easily be included by a single phase factor in existing computer programs based on physical optics integration

Keywords

antenna radiation patterns; physical optics; reflector antennas; aperture blockage; obstacle-located blockage currents; physical optics integration; radiation patterns; reflector antennas; Antenna feeds; Antenna radiation patterns; Aperture antennas; Geometrical optics; Optical computing; Optical reflection; Optical scattering; Physical optics; Physics computing; Reflector antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.123364

Filename

123364