Electromagnetic simulation and beam-pattern optimization of a C-band phased array feed for the Sardinia radio telescope
Date Issued
2019
Author(s)
Abstract
We report on results of electromagnetic co-simulations and beam-pattern optimization of the C-band
PHAROS (PHased Arrays for Reflector Observing Systems)
Phased Array Feed (PAF) from the primary focus of the 64-m
diameter Sardinia Radio Telescope (SRT). We calculated the
radiation patterns of a sub-array of 24 PHAROS Vivaldi array
elements and propagated them through the reflector. We
present the SRT far-field beam patterns obtained by linearly
combining different PAF sub-array configurations with
uniform weights. Furthermore, we used the Conjugate Field
Matching (CFM) technique to derive optimum beam weights to
maximize the SRT on-axis gain. The results show that the
PHAROS array could be used at the focus of the SRT to
provide high antenna performance, with high-quality
illumination and efficiency greater than 60% across 4-8 GHz.
Coverage
2019 IEEE 2nd Ukraine Conference on Electrical and Computer Engineering (UKRCON)
Start page
137
Conferenece
2019 IEEE 2nd Ukraine Conference on Electrical and Computer Engineering (UKRCON)
Conferenece place
Lviv, Ukraine
Conferenece date
2-6 July, 2019
Rights
open.access
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