Title :
Beamformer system model of focal plane arrays in deep dish radio telescopes
Author :
Simons, J. ; Ivashina, M. ; De Vaate, J. G Bij ; Roddis, N.
Author_Institution :
ASTRON, Netherlands Found. for Res. in Astron., Dwingeloo, Netherlands
Abstract :
This article describes the design of a radio telescope front-end system with a focal plane array (FPA) and an RF beamforming section. The multi-beam capability of the FPA increases the field of view and the survey scanning speed of the telescope. The system performance is related to the different components and a model for the complexity is derived. We address the number of beams and elements per beam in relation to their impact on system complexity. Also, we demonstrate that in specific applications RF beamforming can be of advantage over digital beamforming systems. Experience is drawn from the technology demonstrator project PHAROS.
Keywords :
antenna arrays; focal planes; radiotelescopes; PHAROS; RF beamforming; beamformer system model; deep dish radio telescopes; digital beamforming; focal plane arrays; multibeam capability; system complexity; Array signal processing; Cooling; Cryogenics; Radio astronomy; Radio frequency; Receiving antennas; Reflector antennas; Space technology; Telescopes; Temperature;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610380
