Preliminary Characterization of the Digitally Formed Beams of PHAROS2 Phased Array Feed

Date Issued
2021
Author(s)
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DOI
Abstract
We describe the beamforming strategy and the preliminary laboratory characterization results of the beam pattern synthesized by the PHAROS2 Phased Array Feed (PAF), a 4-8 GHz PAF with digital beamformer for radio astronomy application. The PAF is based on an array of 10×11 dual-polarization Vivaldi antennas cryogenically cooled at 20 K along with low noise amplification modules (LNAs) cascaded with a multi-channel Warm Section (WS) receiver. We present the beamforming and test procedures used to, respectively digitally synthesize and characterize the PHAROS2 antenna array beam pattern at 6 GHz. The tests of the array were carried out at room temperature by directly connecting 24 antenna elements to the WS and iTPM digital beamformer in a laboratory measurement setup.
Coverage
2020 50th European Microwave Conference (EuMC)
Start page
1035-1038
Conferenece
50th European Microwave Conference (EuMC)
Conferenece place
Utrecht, Netherlands
Conferenece date
12-14 January 2021
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Rights
open.access
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