NAVARRINI, AlessandroAlessandroNAVARRINIMONARI, JADERJADERMONARISCALAMBRA, ALESSANDROALESSANDROSCALAMBRAMELIS, AndreaAndreaMELISCONCU, RaimondoRaimondoCONCUNALDI, GiovanniGiovanniNALDIMACCAFERRI, ANDREAANDREAMACCAFERRICATTANI, ALESSANDROALESSANDROCATTANIORTU, PierluigiPierluigiORTURODA, JURIJURIRODAPERINI, FEDERICOFEDERICOPERINICOMORETTO, GiovanniGiovanniCOMORETTOMORSIANI, MARCOMARCOMORSIANILADU, AdelaideAdelaideLADURUSTICELLI, SIMONESIMONERUSTICELLIMATTANA, AndreaAndreaMATTANAMARONGIU, PasqualinoPasqualinoMARONGIUSABA, AndreaAndreaSABASCHIAFFINO, MARCOMARCOSCHIAFFINOCARRETTI, ETTOREETTORECARRETTISCHILLIRO', FRANCESCOFRANCESCOSCHILLIRO'URRU, EnricoEnricoURRUPUPILLO, GiuseppeGiuseppePUPILLOPOLONI, MARCOMARCOPOLONIPISANU, ToninoToninoPISANUNESTI, RenzoRenzoNESTIMuntoni, G.G.MuntoniAdami, K.Z.K.Z.AdamiMagro, A.A.MagroChiello, R.R.ChielloLiu, L.L.LiuGrainge, K.K.GraingeKeith, M.M.KeithPantaleev, M.M.PantaleevVan Cappellen, W.W.Van Cappellen2020-11-092020-11-092018978-90-82598-73-5978-1-5386-3764-7http://hdl.handle.net/20.500.12386/28211We 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 Multiplexing) fiberoptic link, and d) an 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.ELETTRONICOenConference paper10.23919/URSI-AT-RASC.2018.84713052-s2.0-85055845937http://www.scopus.com/inward/record.url?eid=2-s2.0-85055845937&partnerID=MN8TOARSFIS/05 - ASTRONOMIA E ASTROFISICA