Dr. Alessandro Orfei Profile

Dr. Alessandro Orfei

Senior Engineer at INAF - Istituto di Radioastronomia

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Author

Publications (7)

Proceedings Article | 9 July 2018 Presentation + Paper

Metamaterial-based Toraldo pupils for super-resolution at millimetre wavelengths

Giampaolo Pisano, Alexey Shitvov, Carole Tucker, Daniela Mugnai, Pietro Bolli, Luca Olmi, Francesco D'Agostino, Massimo Migliozzi, Alessandro Orfei, Alessandro Navarrini, Cristiano Riminesi, Bruno Maffei

Proceedings Volume 10708, 107080G (2018) https://doi.org/10.1117/12.2314086

KEYWORDS: Phase shifts, Super resolution, Gaussian beams, Collimators, Mirrors, Metamaterials, Receivers, Antennas, Reflection, Polarization

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Proceedings Article | 20 July 2016 Paper

Status of the radio receiver system of the Sardina Radio Telescope

G. Valente, A. Orfei, R. Nesti, A. Navarrini, S. Mariotti, P. Bolli, T. Pisanu, J. Roda, L. Cresci, P. Marongiu, A. Scalambra, D. Panella, A. Ladu, A. Cattani, L. Carbonaro, E. Urru, A. Cremonini, F. Fiocchi, A. Maccaferri, M. Morsiani, M. Poloni

Proceedings Volume 9914, 991425 (2016) https://doi.org/10.1117/12.2232880

KEYWORDS: Receivers, Radio telescopes, Cryogenics, Polarization, Oscillators, Waveguides, Interference (communication), Electronic filtering, Linear filtering, L band

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Proceedings Article | 15 July 2010 Paper

The dual-band LP feed system for the Sardinia Radio Telescope prime focus

G. Valente, T. Pisanu, P. Bolli, S. Mariotti, P. Marongiu, A. Navarrini, R. Nesti, A. Orfei, J. Roda

Proceedings Volume 7741, 774126 (2010) https://doi.org/10.1117/12.857306

KEYWORDS: L band, Waveguides, Antennas, Connectors, Radio telescopes, Receivers, Device simulation, Transducers, Polarization, Electromagnetic coupling

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Proceedings Article | 10 July 2008 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 | 29 September 2004 Paper

Active surface system for the new Sardinia Radiotelescope

Alessandro Orfei, Marco Morsiani, Giampaolo Zacchiroli, Giuseppe Maccaferri, Juri Roda, Franco Fiocchi

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.548944

KEYWORDS: Antennas, Actuators, Mirrors, Receivers, Manufacturing, Photogrammetry, Prototyping, Thermal effects, Optical alignment, L band

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Proceedings Article | 28 September 2004 Paper

Sardinia Radio Telescope: the new Italian project

Gavril Grueff, Giovanni Alvito, Roberto Ambrosini, Pietro Bolli, Andrea Maccaferri, Giuseppe Maccaferri, Marco Morsiani, Leonardo Mureddu, Vincenzo Natale, Luca Olmi, Alessandro Orfei, Claudio Pernechele, Angelo Poma, Ignazio Porceddu, Lucio Rossi, Gianpaolo Zacchiroli

Proceedings Volume 5489, (2004) https://doi.org/10.1117/12.550332

KEYWORDS: Mirrors, Antennas, Radio telescopes, Receivers, Reflectors, Actuators, Servomechanisms, Metrology, Aluminum, Astrophysics

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Proceedings Article | 14 February 2003 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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Showing 5 of 7 publications

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