Full wave analysis of periodic and random surface distortions on reflector antennas

Author

Pavlovic, Milos S. ; Milosevic, Tomislav S. ; Kolundzija, Branko M.

Author_Institution

WIPL-D d.o.o., Belgrade, Serbia

fYear

2011

fDate

3-8 July 2011

Firstpage

956

Lastpage

959

Abstract

The focus of this paper is to present full wave analysis of periodic and random surface distortions on reflector antennas. Three models of distortions are used - random distortion, one dimensional cosine and two dimension cosine distortion. Also, in order to compare results, reflector with ideally flat surface was used as referent model. In this paper, the distorted reflector surface points are approximated by summing two components: an undistorted (ideal) surface component and a surface error component. For each case, radiation patterns of the reflector are simulated and influence to main lobe and grating lobe is observed for reflector antennas up to 200 wavelengths in diameter by using an efficient MoM 3D solver.

Keywords

method of moments; reflector antennas; full wave analysis; one dimensional cosine distortion; periodic surface distortions; random distortion; random surface distortions; reflector antennas; surface component; surface error component; two dimension cosine distortion; Brain modeling; Moment methods; Reflector antennas; Rough surfaces; Surface roughness; Surface waves; Method of Moments; Reflector surface; WIPL-D; distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5996436

Filename

5996436