Radiation Efficiency Calculation of the Murchison Widefield Array Using a Power Wave Based Framework

Ung, Daniel; Sutinjo, Adrian; Davidson, David Bruce; Johnston-Hollitt, Melanie; Tingay, Steven

doi:10.1109/APUSNCURSINRSM.2019.8888935

Access Status

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Authors

Ung, Daniel

Sutinjo, Adrian

Davidson, David Bruce

Johnston-Hollitt, Melanie

Tingay, Steven

Date

2019

Type

Conference Paper

Metadata

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Citation

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.

Source Conference

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting

DOI

10.1109/APUSNCURSINRSM.2019.8888935

Faculty

Faculty of Science and Engineering

School

School of Elec Eng, Comp and Math Sci (EECMS)

URI

http://hdl.handle.net/20.500.11937/76900

Collection

Curtin Research Publications

Abstract

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.