Abstract
We describe the design and architecture of PHAROS2, a cryogenically cooled 4-8 GHz Phased Array Feed (PAF) demonstrator with 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. PHAROS2 will be mounted at the primary focus of the 76-m diameter Lovell radio telescope (Jodrell Bank Observatory, UK) for technical and scientific validation.
Original language | English |
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Title of host publication | 2018 2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018 |
Publisher | IEEE |
ISBN (Electronic) | 9789082598735 |
DOIs | |
Publication status | Published - 24 Sept 2018 |
Event | 2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018 - Gran Canaria, Spain Duration: 28 May 2018 → 1 Jun 2018 |
Conference
Conference | 2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018 |
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Country/Territory | Spain |
City | Gran Canaria |
Period | 28/05/18 → 1/06/18 |