Design of Cryogenic Phased Array Feed for 4-8 GHz
Date Issued
2018
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Zarb Adami, Kris
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Magro, Alessio
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Chiello, Riccardo
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Liu, Lei
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Grainge, Keith
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Keith, Michael
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Pantaleev, M.
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van Cappellen, Wim
Abstract
We describe the design and architecture of PHAROS2, a cryogenically cooled 4-8 GHz Phased Array Feed (PAF) demonstrator with a digital beamformer for radio astronomy application. The instrument will be capable of synthesizing four independent single-polarization beams by combining 24 active elements of an array of Vivaldi antennas.
PHAROS2, the upgrade of PHAROS (PHased Arrays for Reflector Observing Systems), features: a) commercial cryogenic LNAs with state-of-the-art performance, b) a “Warm Section” for signal filtering, conditioning and single downconversion to select a ≈275 MHz Intermediate Frequency (IF) bandwidth within the 4-8 GHz Radio Frequency (RF) band, c) an IF signal transportation by analog WDM (Wavelength Division Mutiplexing) fiber-optic link, and d) a FPGA-based Italian Tile Processing Module (iTPM) digital backend.
Coverage
XXII RINEM Riunione Nazionale di ElettroMagnetismo
Conferenece
XXII RINEM Riunione Nazionale di ElettroMagnetismo
Conferenece place
Cagliari, Italy
Conferenece date
3-6 September, 2018
Rights
open.access
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