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Analysis of the strut and feed blockage effects in radio telescopes with compact UWB feeds

Wan-Chun Liao ; Marianna Ivashina (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Per-Simon Kildal (Institutionen för signaler och system, Antenner) ; A. van Ardenne
6th European Conference on Antennas and Propagation, EuCAP 2012; Prague; Czech Republic; 26 March 2012 through 30 March 2012 p. 611-615. (2012)
[Konferensbidrag, refereegranskat]

The international radio astronomy community is currently pursuing the development of a giant radio telescope known as the Square Kilometre Array (SKA). The SKA reference design consists of several wideband antenna technologies, including reflector antennas fed with novel multi-beam Phased Array Feeds (PAF) and/or wide band Single Pixel Feeds (SPFs) that can operate at frequencies from 1 to 10 GHz [1], [2]. The baseline of this design represents an array of several hundred to a few thousand reflector antennas of 15-m diameter and that will realize sensitivity of 10,000 m 2/K. During the past years, several different reflector and feed concepts have been proposed and examined, but only a small number of these design options (that have a sufficient level of maturity) will be built and tested in a set-up that is closely resembling the final SKA system [3]. These tests are aimed to evaluate the overall system performance as well as construction and operational costs. The final choices for the dish and feed evaluation tests might include: (i) off-set Gregorian and axi-symmetric reflector antennas and; (ii) an optimized octave corrugated horn and the single-pixel wideband feeds such as quad-ridged horn and Eleven antenna [2], [4].



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Denna post skapades 2012-04-13. Senast ändrad 2016-08-19.
CPL Pubid: 156669

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling
Institutionen för signaler och system, Antenner (2005-2014)

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Informations- och kommunikationsteknik
Elektroteknik och elektronik

Chalmers infrastruktur