Analysis of the strut and feed blockage effects in radio telescopes with compact UWB feeds
Paper i proceeding, 2012

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].


Wan-Chun Liao

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

Marianna Ivashina

Chalmers, Rymd- och geovetenskap, Avancerad mottagarutveckling

Per-Simon Kildal

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

Arnold van Ardenne

Netherlands Institute for Radio Astronomy (ASTRON)

Onsala Space Observatory

6th European Conference on Antennas and Propagation, EuCAP 2012; Prague; Czech Republic; 26 March 2012 through 30 March 2012

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