A shaped dual-reflector antenna with a tilting flat subreflector for scanning applications

Author

Garcia-Pino, Antonio ; Rappaport, Carey M. ; Rubinos, J. Oscar ; Lorenzo, M. Edita

Author_Institution

Dept. of Tecnologias de las Communicaciones, Vigo Univ., Spain

Volume

43

Issue

10

fYear

1995

fDate

10/1/1995 12:00:00 AM

Firstpage

1022

Lastpage

1028

Abstract

A scanning dual-offset reflector antenna using the simple motion of a flat subreflector to illuminate different parts of a shaped main reflector is presented. A particular case having a 20-degree linear field-of-view (for a DBS application) with a 30λ aperture diameter is explored. The main reflector surface is shaped to minimize the phase aberrations across the field-of-view. Once the main reflector surface is designed, the subreflector parameters are determined to ensure optimum focusing across the field-of-view

Keywords

antenna radiation patterns; direct broadcasting by satellite; offset reflector antennas; reflector antennas; satellite antennas; scanning antennas; 20-degree linear field-of-view; DBS application; aperture diameter; main reflector surface; optimum focusing; phase aberrations; scanning applications; scanning dual-offset reflector antenna; shaped dual-reflector antenna; shaped main reflector; subreflector parameters; tilting flat subreflector; Antenna feeds; Apertures; Directive antennas; Focusing; Geometry; Radar antennas; Radar applications; Reflector antennas; Satellite broadcasting; Surface treatment;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.467637

Filename

467637