Radiation Efficiency Calculation of the Murchison Widefield Array Using a Power Wave Based Framework
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Ung, D. and Sutinjo, A. and Davidson, D.B. and Johnston-Hollitt, M. and Tingay, S. 2019. Radiation Efficiency Calculation of the Murchison Widefield Array Using a Power Wave Based Framework. In: 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 7th Jul 2019, Atlanta, GA, USA.
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
Faculty of Science and Engineering
School of Elec Eng, Comp and Math Sci (EECMS)
We present a power wave based framework to compute the radiation efficiency of phased arrays which aims to simplify and minimize the amount of new simulated/measured data required by reusing prior knowledge of embedded element patterns (EEPs). The framework uses EEPs, S-parameters, and knowledge of low-noise amplifier (LNA) impedance to perform the calculation. Based on the previously simulated Murchison Widefield Array (MWA) embedded element pattern and S-parameters, we calculated the radiation efficiency of the MWA to be no less than 94% whereby the lowest efficiency occurs at approximately 242 MHz.
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