Dr. Jader Monari Profile

Dr. Jader Monari

at IRA INAF

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 18 July 2024 Poster + Paper

Poster + Paper

Design of the antenna processing subrack, a new beamformer for LOFAR

Gijs Schoonderbeek, Paulus Kruger, Jeroen Herrewijnen, Boudewijn Hut, Sieds Damstra, Paula Fusiara, Henri Meulman, Mark Ruiter, Ágnes Mika, Federico Perini, Jader Monari

Proceedings Volume 13096, 130966N (2024) https://doi.org/10.1117/12.3018795

KEYWORDS: Antennas, Design, Signal processing, Clocks, Phased arrays, Analog to digital converters, Digital signal processing, Electromagnetic coupling, Field programmable gate arrays

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SPIE Journal Paper | 11 January 2022 Open Access

Open Access

Radio frequency over fiber technology for SKA-low receiver

Federico Perini, Simone Rusticelli, Marco Schiaffino, Andrea Mattana, Jader Monari, Giovanni Tartarini, Jacopo Nanni, Budi Juswardy, Randall Wayth, Mark Waterson

JATIS, Vol. 8, Issue 01, 011016, (January 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.011016

KEYWORDS: Receivers, Antennas, Finite element methods, Radio over Fiber, Wavelength division multiplexing, Temperature metrology, Optical fibers, Radio optics, Polarization, Transmitters

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SPIE Journal Paper | 10 January 2022 Open Access

Open Access

Cabinet clock distribution network for low-frequency aperture array

Giovanni Naldi, Gianni Comoretto, Sandro Pastore, Monica Alderighi, Claudio Bortolotti, Alessio Gravina, Jader Monari, Mauro Roma, Marco Schiaffino

JATIS, Vol. 8, Issue 01, 011015, (January 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.011015

KEYWORDS: Clocks, Interference (communication), Phase measurement, Antennas, Signal processing, Field programmable gate arrays, Telescopes, Oscillators, Surface plasmons, Quantization

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SPIE Journal Paper | 5 January 2022 Open Access

Open Access

Characterization of the SKA1-Low prototype station Aperture Array Verification System 2

Giulia Macario, Giuseppe Pupillo, Gianni Bernardi, Pietro Bolli, Paola Di Ninni, Giovanni Comoretto, Andrea Mattana, Jader Monari, Federico Perini, Marco Schiaffino, Marcin Sokolowski, Randall Wayth, Jess Broderick, Mark Waterson, Maria Grazia Labate, Riccardo Chiello, Alessio Magro, Tom Booler, Andrew McPhail, Dave Minchin, Raunaq Bhushan

JATIS, Vol. 8, Issue 01, 011014, (January 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.011014

KEYWORDS: Calibration, Polarization, Sun, Antennas, Prototyping, Telescopes, Visibility, Signal to noise ratio, Phased arrays, Observatories

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SPIE Journal Paper | 20 December 2021

Engineering Development Array 2: design, performance, and lessons from an SKA-Low prototype station

Randall Wayth, Marcin Sokolowski, Jess Broderick, Steven J. Tingay, Raunaq Bhushan, Tom Booler, Riccardo Chiello, David Davidson, David Emrich, Budi Juswardy, David Kenney, Giulia Macario, Alessio Magro, Andrea Mattana, David Minchin, Jader Monari, Andrew McPhail, Federico Perini, Giuseppe Pupillo, Marco Schiaffino, Ravi Subrahmanyan, Andre van Es, Mia Walker, Mark Waterson

JATIS, Vol. 8, Issue 01, 011010, (December 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.011010

KEYWORDS: Antennas, Calibration, Prototyping, Finite element methods, Polarization, Receivers, Temperature metrology, Sun, Phased arrays, Interferometers

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

The signal processing chain of the Low Frequency Aperture Array

Gianni Comoretto, Jader Monari, Carolina Belli, Simone Chiarucci, Francesco Schillirò, Marco Schiaffino, Federico Perini, Andrea Mattana, Monica Alderighi, Sergio d'Angelo, Sandro Pastore, Giovanni Naldi, Giuseppe Pupillo, Marco Poloni, Simone Rustichelli, Riccardo Chiello, Kris Zarb Adami, Alessio Magro

Proceedings Volume 11445, 1144571 (2020) https://doi.org/10.1117/12.2561699

KEYWORDS: Signal processing, Antennas, Telescopes, Network architectures, Electromagnetic coupling, Phased arrays, Electronic filtering, Filtering (signal processing), Calibration, Data processing

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

A prototype model for evaluating SKA-LOW station calibration

A. J. J. van Es, M. G. Labate, M. F. Waterson, J. Monari, P. Bolli, D. Davidson, R. Wayth, M. Sokolowski, P. Di Ninni, G. Pupillo, G. Macario, G. Virone, L. Ciorba, F. Paonessa

Proceedings Volume 11445, 1144589 (2020) https://doi.org/10.1117/12.2562391

KEYWORDS: Antennas, Calibration, Telescopes, Prototyping, Phased arrays, Polarization, Device simulation, Astronomy, Sun, Galactic astronomy

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The Square Kilometre Array telescope at low-frequency (SKA-Low) will be a phased array telescope supporting a wide range of science cases covering the frequency band 50 - 350 MHz, while at the same time asking for high sensitivity and excellent characteristics. These extremely challenging requirements resulted in a design using 512 groups of 256 log periodic dual polarized antennas each (where each group is called “station”), for a total of 131072 antennas. The 512 stations are randomly distributed mostly within a dense area around the centre of the SKA-Low, and then in 3 arms having 16 station clusters each. In preparation for the SKA Phase 1 (SKA1) System Critical Design Review (CDR), prototype stations were deployed at the Murchison Radio-astronomy Observatory (MRO) site (Western Australia) near the Murchison Widefield Array (MWA) radio telescope. The project involved multiple parties in an International collaboration building and testing different prototypes of the SKA1-Low station near the actual site. This resulted in both organisational and logistic challenges typical of a deployment of the actual telescope. The test set-up involved a phased build-up of the complex station of log-periodic antennas, by starting from the deployment of 48 antennas and related station signal processing (called AAVS1.5, where AAVS stands for Aperture Array Verification System), followed by expansion to a full station (AAVS2.0). As reference a station with dipole antennas EDA2 (EDA: Engineering Development Array) was deployed. This test set-up was used for an extensive test and evaluation programme. All test antenna configurations were simulated in detail by electromagnetic (EM) models, and the prediction of the models was further verified by appropriate tests with a drone-based radio frequency source. Astronomical observations on Sun and galaxy transit were performed with calibrated stations of both EDA2, AAVS1.5 and AAVS2.0. All 3 configurations were calibrated. EM modelling and calibration results for the full station AAVS2.0 and EM verification for the AAVS1.5 station are presented. The comparisons between the behaviour of the log-periodic antennas and the dipoles have advanced our understanding the calibration quality and the technological maturity of the future SKA1-Low array.

Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Design and prototyping of the Italian Tile Processing Module 1.6 (ITPM) for the low-frequency aperture array deployment

Francesco Schillirò, Monica Alderighi, Carolina Belli, Simone Chiarucci, Riccardo Chiello, Giovanni Comoretto, Sergio D'Angelo, Alessio Magro, Andrea Mattana, Jader Monari, Giovanni Naldi, Sandro Pastore, Federico Perini, Marco Poloni, Simone Rusticelli, Marco Schiaffino, Kris Zarb Adami

Proceedings Volume 11445, 1144574 (2020) https://doi.org/10.1117/12.2562085

KEYWORDS: Prototyping, Analog electronics, Signal processing, Electronic filtering, Digital filtering, Data conversion, Software development, Field programmable gate arrays, Polarization, Antennas

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Proceedings Article | 27 July 2016 Paper

Paper

Antenna pattern characterization of the low-frequency receptor of LOFAR by means of an UAV-mounted artificial test source

P. Bolli, F. Paonessa, G. Pupillo, G. Virone, M. Arts, A. Lingua, J. Monari, S. Wijnholds

Proceedings Volume 9906, 99063V (2016) https://doi.org/10.1117/12.2232419

KEYWORDS: Antennas, Unmanned aerial vehicles, Calibration, Electromagnetism, Receptors, Polarization, Solids, Astronomy, Transmitters, Micro unmanned aerial vehicles

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Proceedings Article | 20 July 2016 Paper

Paper

A real-time KLT implementation for radio-SETI applications

Andrea Melis, Raimondo Concu, Pierpaolo Pari, Claudio Maccone, Stelio Montebugnoli, Andrea Possenti, Giuseppe Valente, Nicoló Antonietti, Delphine Perrodin, Carlo Migoni, Matteo Murgia, Alessio Trois, Massimo Barbaro, Alessandro Bocchinu, Silvia Casu, Maria Ilaria Lunesu, Jader Monari, Alessandro Navarrini, Tonino Pisanu, Francesco Schilliró, Valentina Vacca

Proceedings Volume 9914, 99143D (2016) https://doi.org/10.1117/12.2232347

KEYWORDS: Signal detection, Interference (communication), Field programmable gate arrays, Zinc, Stochastic processes, Fourier transforms, Space telescopes, Galactic astronomy, Signal processing, Principal component analysis

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Proceedings Article | 22 July 2014 Paper

Paper

Sardinia aperture array demonstrator

M. Murgia, G. Bianchi, P. Bolli, G. Comoretto, D. Dallacasa, M. Farooqui, F. Gaudiomonte, L. Gregorini, F. Govoni, K-H. Mack, M. Massardi, A. Mattana, A. Melis, J. Monari, L. Mureddu, G. Naldi, F. Paonessa, F. Perini, A. Poddighe, I. Porceddu, I. Prandoni, G. Pupillo, M. Schiaffino, F. Schillirò, G. Serra, A. Tibaldi, T. Venturi, G. Virone, A. Zanichelli

Proceedings Volume 9145, 91454S (2014) https://doi.org/10.1117/12.2055793

KEYWORDS: Antennas, Electromagnetic coupling, Satellites, Prototyping, Data modeling, Visibility, Optical simulations, Spatial resolution, Interferometry, Phased arrays

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Proceedings Article | 10 July 2008 Paper

Paper

Status of the Sardinia Radio Telescope project

Gianni Tofani, Gianni Alvito, Roberto Ambrosini, Pietro Bolli, Claudio Bortolotti, Loredana Bruca, Franco Buffa, Alessandro Cattani, Gianni Comoretto, Andrea Cremonini, Luca Cresci, Nichi D'Amico, Gian Luigi Deiana, Antonietta Fara, Luigina Feretti, Franco Fiocchi, Enrico Flamini, Flavio Fusi Pecci, Gavril Grueff, Giuseppe Maccaferri, Andrea Maccaferri, Franco Mantovani, Sergio Mariotti, Carlo Migoni, Filippo Messina, Jader Monari, Marco Morsiani, Matteo Murgia, José Musmeci, Mauro Nanni, Vincenzo Natale, Alessandro Navarrini, Monia Negusini, Renzo Nesti, Luca Olmi, Alessandro Orfei, Andrea Orlati, Francesco Palla, Dario Panella, Claudio Pernechele, Salvatore Pilloni, Tonino Pisanu, Antonio Poddighe, Marco Poloni, Angelo Poma, Sergio Poppi, Ignazio Porceddu, Isabella Prandoni, Juri Roda, Mauro Roma, Pierguido Sarti, Alessandro Scalambra, Francesco Schillirò, Andrea Tarchi, Gian Paolo Vargiu, Giampaolo Zacchiroli

Proceedings Volume 7012, 70120F (2008) https://doi.org/10.1117/12.790503

KEYWORDS: Receivers, Antennas, Mirrors, Telescopes, Radio astronomy, Control systems, Space telescopes, Radio telescopes, Astronomy, Electromagnetic coupling

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Proceedings Article | 8 October 2004 Paper

Paper

Thermal design and performance evaluation of the BaR-SPOrt cryostat

Mario Zannoni, Claudio Macculi, Ettore Carretti, Stefano Cortiglioni, Giulio Ventura, Jader Monari, Marco Poloni, Sergio Poppi

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.551671

KEYWORDS: Radiometry, Cryogenics, Polarimetry, Polarization, Polarizers, Cryocoolers, Surface plasmons, Receivers, Telescopes, Antennas

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Proceedings Article | 8 October 2004 Paper

Paper

High stability and sensitivity correlation polarimeters for CMB polarization measurements

Ettore Carretti, Stefano Cortiglioni, Claudio Macculi, Carla Sbarra, Giulio Ventura, Jader Monari, Marco Poloni, Sergio Poppi, Vincenzo Natale, Renzo Nesti, Massimo Baralis, Oscar Peverini, Riccardo Tascone, Giuseppe Virone, Giorgio Sironi, Mario Zannoni

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.551408

KEYWORDS: Receivers, Polarization, Polarimetry, Anisotropy, Polarizers, Copper, Antennas, Contamination, Radiometry, Amplifiers

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Proceedings Article | 14 February 2003 Paper

Paper

SPOrt: an experiment aimed at measuring the large scale cosmic microwave background polarization

Ettore Carretti, Stefano Cortiglioni, Gianni Bernardi, Stefano Cecchini, Claudio Macculi, Carla Sbarra, Jader Monari, Alessandro Orfei, Marco Poloni, Sergio Poppi, Giuliano Boella, Silvio Bonometto, Massimo Gervasi, Giorgio Sironi, Mario Zannoni, Marco Tucci, Massino Baralis, Oscar Peverini, Riccardo Tascone, Giuseppe Virone, Roberto Fabbri, Luciano Nicastro, Kin-Wang Ng, V. Razin, Evgenij Vinyajkin, Mikhail Sazhin, Igor Strukov

Proceedings Volume 4843, (2003) https://doi.org/10.1117/12.458896

KEYWORDS: Polarization, Microwave radiation, Radiometry, Signal detection, Polarizers, Anisotropy, Signal attenuation, Interference (communication), Receivers, Polarimetry

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Proceedings Article | 14 February 2003 Paper

Paper

BaR-SPOrt experiment

Mario Zannoni, S. Cortiglioni, G. Bernardi, Ettore Carretti, S. Cecchini, C. Macculi, Ennio Morelli, C. Sbarra, Giulio Ventura, Luciano Nicastro, J. Monari, M. Poloni, S. Poppi, Vincenzo Natale, M. Baralis, O. Peverini, R. Tascone, G. Virone, Andrea Boscaleri, E. Pascale, Giuliano Boella, S. Bonometto, Massimo Gervasi, Giorgio Sironi, M. Tucci, R. Nesti, R. Fabbri, Pierluigi De Bernardis, Marco DePetris, S. Masi, M. Sazhin, E. Vinyajkin

Proceedings Volume 4843, (2003) https://doi.org/10.1117/12.458610

KEYWORDS: Polarization, Radiometry, Polarizers, Signal detection, Cryocoolers, Spatial resolution, Polarimetry, Space telescopes, Microwave radiation, Synchrotrons

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Showing 5 of 16 publications

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