Zooming techniques for a gregorian confocal dual reflector antenna

Author

Gonzalez-Valdes, Borja ; Martínez-Lorenzo, José A. ; García-Pino, Antonio ; Rappaport, Carey M.

Author_Institution

Univ. de Vigo, Vigo

fYear

2007

fDate

9-15 June 2007

Firstpage

3173

Lastpage

3176

Abstract

Reflector antenna pattern reconfigurability has been identified as a one of the most interesting and challenging area for satellite telecommunications. Steering and zooming the heard are important capabilities for onboard antenna configurations. This work presents a comparison between two different zooming techniques of a Gregorian confocal dual reflector antenna (GCDRA) when it scans electro-mechanically. The first of the zooming techniques consist of introducing a controlled quadratic path error (QPE) at the main reflector aperture, whereas the second technique is based on reducing the radiating aperture (RRA) of the antenna to a specified percentage.

Keywords

beam steering; reflector antennas; satellite communication; Gregorian confocal dual reflector antenna; antenna radiating aperture reduction; onboard antenna configurations; quadratic path error; reflector antenna pattern reconfigurability; satellite telecommunications; zooming techniques; Apertures; Artificial satellites; Directive antennas; Error correction; Feeds; Geometrical optics; Optical surface waves; Phased arrays; Reflector antennas; Satellite antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2007 IEEE

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-0877-1

Electronic_ISBN

978-1-4244-0878-8

Type

conf

DOI

10.1109/APS.2007.4396210

Filename

4396210