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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29028
Title: The Warm Receiver Section and the Digital Backend of the PHAROS2 Phased Array Feed
Authors: NAVARRINI, Alessandro 
SCALAMBRA, ALESSANDRO 
MELIS, Andrea 
RUSTICELLI, SIMONE 
CONCU, Raimondo 
ORTU, Pierluigi 
NALDI, Giovanni 
PUPILLO, Giuseppe 
MACCAFERRI, ANDREA 
CATTANI, ALESSANDRO 
LADU, Adelaide 
SCHIRRU , LUCA 
PERINI, FEDERICO 
MORSIANI, MARCO 
MONARI, JADER 
RODA, JURI 
MARONGIU, Pasqualino 
SABA, Andrea 
POLONI, MARCO 
SCHIAFFINO, MARCO 
MATTANA, Andrea 
BIANCHI, GERMANO 
COMORETTO, Giovanni 
NESTI, Renzo 
URRU, Enrico 
PISANU, Tonino 
SCHILLIRO', FRANCESCO 
Zarb Adami, Kris 
Magro Alessio 
Chiello Riccardo 
Issue Date: 2019
Volume: 2019 IEEE International Symposium on Phased Array System & Technology (PAST)
First Page: 1
Abstract: We describe the development of a multi-channel “warm receiver section” (WS) and of a digital beamformer for the PHAROS2 Phased Array Feed (PAF), a PAF demonstrator for radio astronomy application across the 4-8 GHz radio frequency (RF) band. 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). The WS receiver can process the signals from a subset of 24 antenna elements of the array by downconverting them to an intermediate frequency (IF) range, 375-650 MHz, suitable for digitization by the digital beamformer. The latter is based on the iTPM (Italian Tile Processing Module), developed for the Square Kilometer Array (SKA) Low Frequency Aperture Array (LFAA). We modified the iTPM firmware to synthesize four independent beams across the 275 MHz instantaneous IF bandwidth in the iTPM FPGAs (Field Programmable Gate Arrays). The 24 signals are sent from the WS to the iTPM through analogue IFoF (IF over fiber) optical links. In this paper we present the design and performance of the WS and of the digital bemaformer for PHAROS2.
Conference Name: 2019 IEEE International Symposium on Phased Array System & Technology (PAST)
Conference Place: Waltham, MA, USA
Conference Date: 15-18 October, 2019
URI: http://hdl.handle.net/20.500.12386/29028
URL: https://ieeexplore.ieee.org/document/9021018
ISBN: 978-1-7281-3049-1
DOI: 10.1109/PAST43306.2019.9021018
Fulltext: embargo_20220305
Appears in Collections:3.01 Contributi in Atti di convegno

Files in This Item:
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c-PID6042641.pdfpostprint2.81 MBAdobe PDFEmbargoed until March 5, 2022
09021018.pdf[Administrators only]2.8 MBAdobe PDF
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