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Evaluating Receiver Noise Temperature of a Radio Telescope in the Presence of Mutual Coupling: Comparison of Current Methodologies

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Open access
Authors
Ung, Daniel
Sutinjo, Adrian
Davidson, D.
Date
2019
Type
Conference Paper

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Ung, D. and Sutinjo, A. and Davidson, D. 2019. Evaluating Receiver Noise Temperature of a Radio Telescope in the Presence of Mutual Coupling: Comparison of Current Methodologies. In 13th European Conference on Antennas and Propagation, Krakow, Poland, 31 Mar-5 Apr 2019.
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13th European Conference on Antennas and Propagation, EuCAP
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Faculty of Science and Engineering
School
School of Elec Eng, Comp and Math Sci (EECMS)
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Abstract

© 2019 European Association on Antennas and Propagation. We present the computation of receiver noise temperature which includes the effects of mutual coupling of two different radio telescopes deployed in the Murchison Radio-astronomy Observatory, namely the Murchison Widefield Array and the prototype Engineering Development Array. We used three different formulations that only require information of measured noise parameters of the low noise amplifier as used in the radio telescope and simulated S-parameter of the array to perform the calculation. In addition, we show convergence in computed receiver noise temperature for various pointing angles and array configurations (uniform and pseudo-random) that indicate agreement with existing literature.