Optimization of a Multi-port Amplifier Using a Least Squares Evolutionary Relaxation Method

Author

James, P.

Author_Institution

EADS Astrium (UK) Ltd, Hampshire

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

886

Lastpage

889

Abstract

A satellite designed for mobile telecommunications applications may contain a large aperture reflector fed by an array at its principle focus. Each radiator element of the array has a one-to-one correspondence with a spot on the earth, so that radiation patterns are pointed at different locations on the Earth by different combinations of elements. Before the signals arrive at the array with their specified complex weights they must undergo amplification. This can be provided by a beam forming network composed of between 10 and 20 multiport amplifiers (MPA). The object of this paper is to describe an optimization method that will improve the performance of the beam forming network

Keywords

amplifiers; antenna arrays; antenna radiation patterns; evolutionary computation; least squares approximations; mobile communication; multiport networks; optimisation; relaxation; satellite antennas; antenna array feeds; aperture reflector; beam forming network; least squares evolutionary relaxation; mobile telecommunications; multiport amplifier optimization; radiation patterns; radiator element; satellite communications; Antenna arrays; Cables; Distributed amplifiers; Earth; Feeds; High power amplifiers; Least squares methods; Optimization methods; Radiofrequency amplifiers; Relaxation methods; Antenna array feeds; amplifiers; arrays; satellite communications;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281062

Filename

4057961