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Low Frequency End Performance of a Symmetrical Configuration Antenna for the Square Kilometre Array (SKA)

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Abstract

The frequency specifications of the Square Kilometre Array (SKA) call for an optimum operation of the antenna elements from 25 down to 100 MHz. The current 12 m diameter US-SKA design is specified from 500 up to 25 GHz, with an upper goal of 35 GHz. At the low frequency end of the band (i.e., 100 MHz), a 12 m reflector antenna is about four wavelengths in diameter. Then, the question is: how well can you do, at this low frequency end of the specified band of operation for the SKA, with a symmetric reflector configuration using an ultra-wide-band prime focus feed? This paper presents the analysis of the antenna performance, in terms of Aeff/TA, of three symmetric configurations of the 12 m US-SKA antenna design between 100 and 200 MHz.

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References

  • Computer Simulation Technology: 2003, ‘CST Microwave Studio 5, HF Design and Analysis’, CST-Computer Simulation Technology, Dec. 11, 2003.

  • Jones, D. L.: 2004, ‘SKA Science Requirements: Version 2’, Square kilometre Array US-SKA Memo 45, Feb. 24, 2004.

  • Krietenstein, B., Schumann, R., Thoma, P. and Weiland, T.: 1998, ‘The perfect boundary approximation technique facing the challenge of high precision field computation’, Proceedings of the XIX International Linear Accelerator Conference LINAC’98, Chicago, USA, pp. 860–862.

  • Olsson, R., Kildal, P.-S. and Weinreb, S.: 2004, ‘A Novel Low-Profile Log-Periodic Ultra Wide-band Feed for the Dual-Reflector Antenna of US-SKA’, IEEE 2004 AP International Symposium, Monterey, CA. June, 2004.

  • Van Cappellen, W.: 2002, LOFAR-ASTRON-ADD-009 report, Oct 10, 2002.

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Authors and Affiliations

  1. National Astronomy and Ionosphere Center, Cornell University, New York, U.S.A.

    Germán Cortés-Medellín

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  1. Germán Cortés-Medellín
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Correspondence to Germán Cortés-Medellín.

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Cortés-Medellín, G. Low Frequency End Performance of a Symmetrical Configuration Antenna for the Square Kilometre Array (SKA). Exp Astron 17, 111–118 (2004). https://doi.org/10.1007/s10686-005-7447-1

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  • DOI: https://doi.org/10.1007/s10686-005-7447-1

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