Design of PHAROS2 Phased Array Feed

A. Navarrini, J. Monari, A. Scalambra, A. Melis, R. Concu, G. Naldi, A. MacCaferri, A. Cattani, P. Ortu, J. Roda, F. Perini, G. Comoretto, M. Morsiani, A. Ladu, S. Rusticelli, A. Mattana, P. Marongiu, A. Saba, M. Schiaffino, E. CarrettiF. Schilliro, E. Urru, G. Pupillo, M. Poloni, T. Pisanu, R. Nesti, G. Muntoni, K. Zarb Adami, A. Magro, R. Chiello, L. Liu, K. Grainge, M. Keith, M. Pantaleev, W. Van Cappellen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


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 languageEnglish
Title of host publication2018 2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018
ISBN (Electronic)9789082598735
Publication statusPublished - 24 Sept 2018
Event2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018 - Gran Canaria, Spain
Duration: 28 May 20181 Jun 2018


Conference2nd URSI Atlantic Radio Science Meeting, AT-RASC 2018
CityGran Canaria


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