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31 results on '"Mennella, A"'

1. LSPE-Strip on-sky calibration strategy using bright celestial sources

Author

Génova-Santos, R.T., primary, Bersanelli, M., additional, Franceschet, C., additional, Gervasi, M., additional, López-Caraballo, C., additional, Mandelli, L., additional, Mandelli, S., additional, Maris, M., additional, Mennella, A., additional, Rubiño-Martín, J.A., additional, Villa, F., additional, Zannoni, M., additional, Baccigalupi, C., additional, Caccianiga, B., additional, Colombo, L., additional, Cuttaia, F., additional, Farsian, F., additional, Morgante, G., additional, Paradiso, S., additional, Polenta, G., additional, Ricciardi, S., additional, Sandri, M., additional, Taylor, A., additional, Terenzi, L., additional, and Tomasi, M., additional

Published
2024
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2. Q-band polarizers for the LSPE-Strip correlation radiometric instrument

Author

Peverini, O.A., primary, Lumia, M., additional, Farooqui, Z., additional, Addamo, G., additional, Virone, G., additional, Paonessa, F., additional, Ciorba, L., additional, Zannoni, M., additional, Gervasi, M., additional, Franceschet, C., additional, Bersanelli, M., additional, Mennella, A., additional, Cuttaia, F., additional, Morgante, G., additional, Villa, F., additional, and Jones, M., additional

Published
2022
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3. The LSPE-Strip beams

Author

Realini, S., primary, Franceschet, C., additional, Villa, F., additional, Sandri, M., additional, Addamo, G., additional, Alonso-Arias, P., additional, Bersanelli, M., additional, Cuttaia, F., additional, Jones, M., additional, Maris, M., additional, Mena, F.P., additional, Mennella, A., additional, Molina, R., additional, Morgante, G., additional, Tomasi, M., additional, and Zannoni, M., additional

Published
2022
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4. The LSPE-Strip feed horn array

Author

Franceschet, C., primary, Del Torto, F., additional, Villa, F., additional, Realini, S., additional, Bongiolatti, R., additional, Peverini, O.A., additional, Pezzotta, F., additional, Viganó, D.M., additional, Addamo, G., additional, Bersanelli, M., additional, Cavaliere, F., additional, Cuttaia, F., additional, Gervasi, M., additional, Mennella, A., additional, Morgante, G., additional, Taylor, A.C., additional, Virone, G., additional, and Zannoni, M., additional

Published
2022
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6. Noise properties of the Planck-LFI receivers

Author

Todd Gaier, M. Tomasi, Gianluca Morgante, Andrea Zacchei, M.L. de la Fuente, M. Frailis, Enrique Martinez-Gonzalez, C. Butler, J. Tuovinen, Luca Valenziano, R. J. Davis, Marco Bersanelli, L. Mendes, D. Kettle, P. Leutenegger, E. Franceschi, F. Winder, Michael Seiffert, E. Blackhurst, Roger J. Hoyland, R. Mandolesi, M. Maris, S. R. Lowe, N. Roddis, A. Mennella, Anna Gregorio, O. D'Arcangelo, Cristian Franceschet, S. Galeotta, M. Sandri, Luca Terenzi, P. Jukkala, M. Laaninen, N. Hughes, M. Malaspina, Leticia Perez Cuevas, M. Miccolis, Peter Meinhold, M. J. Salmon, F. Cuttaia, Jussi Varis, Althea Wilkinson, P. Battaglia, Beatriz Aja, Luca Stringhetti, Andrea Zonca, T. Poutanen, Eduardo Artal, Fabrizio Villa, Rodrigo Leonardi, P., Meinhold, R., Leonardi, B., Aja, E., Artal, P., Battaglia, M., Bersanelli, E., Blackhurst, C. R., Butler, L. P., Cueva, F., Cuttaia, O., D'Arcangelo, R., Davi, M. L., DE LA FUENTE, M., Fraili, C., Franceschet, E., Franceschi, T., Gaier, S., Galeotta, Gregorio, Anna, R., Hoyland, N., Hughe, P., Jukkala, D., Kettle, M., Laaninen, P., Leutenegger, S. R., Lowe, M., Malaspina, R., Mandolesi, M., Mari, E., MARTÍNEZ GONZÁLEZ, L., Mende, A., Mennella, M., Miccoli, G., Morgante, N., Roddi, M., Sandri, M., Seiffert, M., Salmón, L., Stringhetti, T., Poutanen, L., Terenzi, M., Tomasi, J., Tuovinen, J., Vari, L., Valenziano, F., Villa, A., Wilkinson, F., Winder, and A. ZACCHEI AND A., Zonca

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Acoustics, FOS: Physical sciences, Low frequency, 01 natural sciences, symbols.namesake, Instruments for CMB observations, CMB physics, 0103 physical sciences, Planck, Instrumental noise, 010303 astronomy & astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Mathematical Physics, Physics, Microwave radiometers, Radiometer, 010308 nuclear & particles physics, Planck ESA mission, Astrophysics::Instrumentation and Methods for Astrophysics, Noise, Space instrumentation, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Planck Low Frequency Instrument (LFI) radiometers have been tested extensively during several dedicated campaigns. The present paper reports the principal noise properties of the LFI radiometers., Comment: this paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst

Published
2009

7. The linearity response of the Planck-LFI flight model receivers

Author

O. D'Arcangelo, Luca Terenzi, R. Silvestri, M. Tomasi, Marco Bersanelli, M. Laaninen, V. H. Kilpiä, Cristian Franceschet, S. R. Lowe, A. Mennella, R. C. Butler, Anna Gregorio, Rodrigo Leonardi, Andrea Zacchei, D. Kettle, M. Maris, Jussi Varis, Luca Stringhetti, N. Mandolesi, P. Leutenegger, P. M. Lapolla, N. Hughes, R. J. Davis, L. Mendes, F. Cuttaia, S. Galeotta, Peter Meinhold, Andrea Zonca, M. Frailis, Eduardo Artal, Fabrizio Villa, Luca Valenziano, P. Jukkala, Gianluca Morgante, N. Roddis, M. Sandri, M. Miccolis, Althea Wilkinson, P. Battaglia, J. Tuovinen, A., Mennella, F., Villa, L., Terenzi, F., Cuttaia, P., Battaglia, M., Bersanelli, R. C., Butler, O., D'Arcangelo, E., Artal, R., Davi, M., Fraili, C., Franceschet, S., Galeotta, Gregorio, Anna, N., Hughe, P., Jukkala, D., Kettle, V. H., Kilpiä, M., Laaninen, P. M., Lapolla, R., Leonardi, P., Leutenegger, S., Lowe, N., Mandolesi, M., Mari, P., Meinhold, L., Mende, M., Miccoli, G., Morgante, N., Roddi, M., Sandri, R., Silvestri, L., Stringhetti, M., Tomasi, J., Tuovinen, L., Valenziano, A., Zacchei, J., Vari, and A. WILKINSON AND A., Zonca

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Acoustics, FOS: Physical sciences, Set (abstract data type), symbols.namesake, Instruments for CMB observations, Compression (functional analysis), CMB physics, Calibration, Planck, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Mathematical Physics, Physics, Microwave radiometers, Planck ESA mission, Non linearity, Signal compression, Linearity, Systematic effects, Space instrumentation, Flight model, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In this paper we discuss the linearity response of the Planck-LFI receivers, with particular reference to signal compression measured on the 30 and 44 GHz channels. In the article we discuss the various sources of compression and present a model that accurately describes data measured during tests performed with individual radiomeric chains. After discussing test results we present the best parameter set representing the receiver response and discuss the impact of non linearity on in-flight calibration, which is shown to be negligible., Comment: this paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst; This is an author-created, un-copyedited version of an article accepted for publication in JINST. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.1088/1748-0221/4/12/T12011.

Published
2009

8. In-flight calibration and verification of the Planck-LFI instrument

Author

Gregorio, A, primary, Cuttaia, F, additional, Mennella, A, additional, Bersanelli, M, additional, Maris, M, additional, Meinhold, P, additional, Sandri, M, additional, Terenzi, L, additional, Tomasi, M, additional, Villa, F, additional, Frailis, M, additional, Morgante, G, additional, Pearson, D, additional, Zacchei, A, additional, Battaglia, P, additional, Butler, R C, additional, Davis, R, additional, Franceschet, C, additional, Franceschi, E, additional, Galeotta, S, additional, Leonardi, R, additional, Lowe, S, additional, Mandolesi, N, additional, Melot, F, additional, Mendes, L, additional, Stassi, P, additional, Stringhetti, L, additional, Tavagnacco, D, additional, Zonca, A, additional, Wilkinson, A, additional, Wilson, P, additional, Charra, M, additional, Maciaszek, T, additional, Foley, S, additional, Watson, C J, additional, Casale, M, additional, Laureijs, R, additional, Tauber, J, additional, Texier, D, additional, Baker, M, additional, Cuevas, L Perez, additional, Krassenburg, M, additional, and Rihet, P, additional

Published
2013
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11. Dynamic validation of the Planck-LFI thermal model

Author

Tomasi, M, primary, Cappellini, B, additional, Gregorio, A, additional, Colombo, F, additional, Lapolla, M, additional, Terenzi, L, additional, Morgante, G, additional, Bersanelli, M, additional, Butler, R C, additional, Galeotta, S, additional, Mandolesi, N, additional, Maris, M, additional, Mennella, A, additional, Valenziano, L, additional, and Zacchei, A, additional

Published
2010
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12. Optimization of Planck-LFI on-board data handling

Author

Maris, M, primary, Tomasi, M, additional, Galeotta, S, additional, Miccolis, M, additional, Hildebrandt, S, additional, Frailis, M, additional, Rohlfs, R, additional, Morisset, N, additional, Zacchei, A, additional, Bersanelli, M, additional, Binko, P, additional, Burigana, C, additional, Butler, R C, additional, Cuttaia, F, additional, Chulani, H, additional, D'Arcangelo, O, additional, Fogliani, S, additional, Franceschi, E, additional, Gasparo, F, additional, Gomez, F, additional, Gregorio, A, additional, Herreros, J M, additional, Leonardi, R, additional, Leutenegger, P, additional, Maggio, G, additional, Maino, D, additional, Malaspina, M, additional, Mandolesi, N, additional, Manzato, P, additional, Meharga, M, additional, Meinhold, P, additional, Mennella, A, additional, Pasian, F, additional, Perrotta, F, additional, Rebolo, R, additional, Türler, M, additional, and Zonca, A, additional

Published
2009
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13. Advanced modelling of the Planck-LFI radiometers

Author

Battaglia, P, primary, Franceschet, C, additional, Zonca, A, additional, Bersanelli, M, additional, Butler, R C, additional, D'Arcangelo, O, additional, Davis, R J, additional, Galeotta, S, additional, Guzzi, P, additional, Hoyland, R, additional, Hughes, N, additional, Jukkala, P, additional, Kettle, D, additional, Laaninen, M, additional, Leonardi, R, additional, Maino, D, additional, Mandolesi, N, additional, Meinhold, P, additional, Mennella, A, additional, Platania, P, additional, Terenzi, L, additional, Tuovinen, J, additional, Varis, J, additional, Villa, F, additional, and Wilkinson, A, additional

Published
2009
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14. Level 1 on-ground telemetry handling in Planck-LFI

Author

Zacchei, A, primary, Frailis, M, additional, Maris, M, additional, Morisset, N, additional, Rohlfs, R, additional, Meharga, M, additional, Binko, P, additional, Türler, M, additional, Galeotta, S, additional, Gasparo, F, additional, Franceschi, E, additional, Butler, R C, additional, Cuttaia, F, additional, D'Arcangelo, O, additional, Fogliani, S, additional, Gregorio, A, additional, Leonardi, R, additional, Lowe, S R, additional, Maino, D, additional, Maggio, G, additional, Malaspina, M, additional, Mandolesi, N, additional, Manzato, P, additional, Meinhold, P, additional, Mendes, L, additional, Mennella, A, additional, Morgante, G, additional, Pasian, F, additional, Perrotta, F, additional, Sandri, M, additional, Stringhetti, L, additional, Terenzi, L, additional, Tomasi, M, additional, and Zonca, A, additional

Published
2009
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15. Noise properties of the Planck-LFI receivers

Author

Meinhold, P, primary, Leonardi, R, additional, Aja, B, additional, Artal, E, additional, Battaglia, P, additional, Bersanelli, M, additional, Blackhurst, E, additional, Butler, C R, additional, Cuevas, L P, additional, Cuttaia, F, additional, D'Arcangelo, O, additional, Davis, R, additional, Fuente, M L de la, additional, Frailis, M, additional, Franceschet, C, additional, Franceschi, E, additional, Gaier, T, additional, Galeotta, S, additional, Gregorio, A, additional, Hoyland, R, additional, Hughes, N, additional, Jukkala, P, additional, Kettle, D, additional, Laaninen, M, additional, Leutenegger, P, additional, Lowe, S R, additional, Malaspina, M, additional, Mandolesi, R, additional, Maris, M, additional, Martínez-González, E, additional, Mendes, L, additional, Mennella, A, additional, Miccolis, M, additional, Morgante, G, additional, Roddis, N, additional, Sandri, M, additional, Seiffert, M, additional, Salmón, M, additional, Stringhetti, L, additional, Poutanen, T, additional, Terenzi, L, additional, Tomasi, M, additional, Tuovinen, J, additional, Varis, J, additional, Valenziano, L, additional, Villa, F, additional, Wilkinson, A, additional, Winder, F, additional, Zacchei, A, additional, and Zonca, A, additional

Published
2009
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16. Planck-LFI radiometers tuning

Author

Cuttaia, F, primary, Mennella, A, additional, Stringhetti, L, additional, Maris, M, additional, Terenzi, L, additional, Tomasi, M, additional, Villa, F, additional, Bersanelli, M, additional, Butler, R C, additional, Cappellini, B, additional, Cuevas, L P, additional, D'Arcangelo, O, additional, Davis, R, additional, Frailis, M, additional, Franceschet, C, additional, Franceschi, E, additional, Gregorio, A, additional, Hoyland, R, additional, Leonardi, R, additional, Lowe, S, additional, Mandolesi, N, additional, Meinhold, P, additional, Mendes, L, additional, Roddis, N, additional, Sandri, M, additional, Valenziano, L, additional, Wilkinson, A, additional, Zacchei, A, additional, Zonca, A, additional, Battaglia, P, additional, Nardo, S De, additional, Grassi, S, additional, Lapolla, M, additional, Leutenegger, P, additional, Miccolis, M, additional, and Silvestri, R, additional

Published
2009
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17. The Planck-LFI flight model composite waveguides

Author

D'Arcangelo, O, primary, Figini, L, additional, Simonetto, A, additional, Villa, F, additional, Pecora, M, additional, Battaglia, P, additional, Bersanelli, M, additional, Butler, R C, additional, Cuttaia, F, additional, Garavaglia, S, additional, Guzzi, P, additional, Mandolesi, N, additional, Mennella, A, additional, Morgante, G, additional, Pagan, L, additional, and Valenziano, L, additional

Published
2009
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18. Cryogenic environment and performance for testing the Planck radiometers

Author

Terenzi, L, primary, Lapolla, M, additional, Laaninen, M, additional, Battaglia, P, additional, Cavaliere, F, additional, Rosa, A De, additional, Hughes, N, additional, Jukkala, P, additional, Kilpiä, V-H, additional, Morgante, G, additional, Tomasi, M, additional, Varis, J, additional, Bersanelli, M, additional, Butler, R C, additional, Ferrari, F, additional, Franceschet, C, additional, Leutenegger, P, additional, Mandolesi, N, additional, Mennella, A, additional, Silvestri, R, additional, Stringhetti, L, additional, Tuovinen, J, additional, Valenziano, L, additional, and Villa, F, additional

Published
2009
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19. Design, development and verification of the 30 and 44 GHz front-end modules for the Planck Low Frequency Instrument

Author

Davis, R J, primary, Wilkinson, A, additional, Davies, R D, additional, Winder, W F, additional, Roddis, N, additional, Blackhurst, E J, additional, Lawson, D, additional, Lowe, S R, additional, Baines, C, additional, Butlin, M, additional, Galtress, A, additional, Shepherd, D, additional, Aja, B, additional, Artal, E, additional, Bersanelli, M, additional, Butler, R C, additional, Castelli, C, additional, Cuttaia, F, additional, D'Arcangelo, O, additional, Gaier, T, additional, Hoyland, R, additional, Kettle, D, additional, Leonardi, R, additional, Mandolesi, N, additional, Mennella, A, additional, Meinhold, P, additional, Pospieszalski, M, additional, Stringhetti, L, additional, Tomasi, M, additional, Valenziano, L, additional, and Zonca, A, additional

Published
2009
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20. Off-line radiometric analysis of Planck-LFI data

Author

Tomasi, M, primary, Mennella, A, additional, Galeotta, S, additional, Lowe, S R, additional, Mendes, L, additional, Leonardi, R, additional, Villa, F, additional, Cappellini, B, additional, Gregorio, A, additional, Meinhold, P, additional, Sandri, M, additional, Cuttaia, F, additional, Terenzi, L, additional, Maris, M, additional, Valenziano, L, additional, Salmon, M J, additional, Bersanelli, M, additional, Binko, P, additional, Butler, R C, additional, D'Arcangelo, O, additional, Fogliani, S, additional, Frailis, M, additional, Franceschi, E, additional, Gasparo, F, additional, Maggio, G, additional, Maino, D, additional, Malaspina, M, additional, Mandolesi, N, additional, Manzato, P, additional, Meharga, M, additional, Morgante, G, additional, Morisset, N, additional, Pasian, F, additional, Perrotta, F, additional, Rohlfs, R, additional, Türler, M, additional, Zacchei, A, additional, and Zonca, A, additional

Published
2009
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21. Design, development, and verification of the Planck Low Frequency Instrument 70 GHz Front-End and Back-End Modules

Author

Varis, J, primary, Hughes, N J, additional, Laaninen, M, additional, Kilpiä, V-H, additional, Jukkala, P, additional, Tuovinen, J, additional, Ovaska, S, additional, Sjöman, P, additional, Kangaslahti, P, additional, Gaier, T, additional, Hoyland, R, additional, Meinhold, P, additional, Mennella, A, additional, Bersanelli, M, additional, Butler, R C, additional, Cuttaia, F, additional, Franceschi, E, additional, Leonardi, R, additional, Leutenegger, P, additional, Malaspina, M, additional, Mandolesi, N, additional, Miccolis, M, additional, Poutanen, T, additional, Kurki-Suonio, H, additional, Sandri, M, additional, Stringhetti, L, additional, Terenzi, L, additional, Tomasi, M, additional, and Valenziano, L, additional

Published
2009
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22. Planck-LFI: design and performance of the 4 Kelvin Reference Load Unit

Author

Valenziano, L, primary, Cuttaia, F, additional, Rosa, A De, additional, Terenzi, L, additional, Brighenti, A, additional, Cazzola, G P, additional, Garbesi, A, additional, Mariotti, S, additional, Orsi, G, additional, Pagan, L, additional, Cavaliere, F, additional, Biggi, M, additional, Lapini, R, additional, Panagin, E, additional, Battaglia, P, additional, Butler, R C, additional, Bersanelli, M, additional, D'Arcangelo, O, additional, Levin, S, additional, Mandolesi, N, additional, Mennella, A, additional, Morgante, G, additional, Morigi, G, additional, Sandri, M, additional, Simonetto, A, additional, Tomasi, M, additional, Villa, F, additional, Frailis, M, additional, Galeotta, S, additional, Gregorio, A, additional, Leonardi, R, additional, Lowe, S R, additional, Maris, M, additional, Meinhold, P, additional, Mendes, L, additional, Stringhetti, L, additional, Zonca, A, additional, and Zacchei, A, additional

Published
2009
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23. LFI 30 and 44 GHz receivers Back-End Modules

Author

Artal, E, primary, Aja, B, additional, Fuente, M L de la, additional, Pascual, J P, additional, Mediavilla, A, additional, Martinez-Gonzalez, E, additional, Pradell, L, additional, Paco, P de, additional, Bara, M, additional, Blanco, E, additional, García, E, additional, Davis, R, additional, Kettle, D, additional, Roddis, N, additional, Wilkinson, A, additional, Bersanelli, M, additional, Mennella, A, additional, Tomasi, M, additional, Butler, R C, additional, Cuttaia, F, additional, Mandolesi, N, additional, and Stringhetti, L, additional

Published
2009
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24. Thermal susceptibility of the Planck-LFI receivers

Author

Terenzi, L, primary, Salmon, M J, additional, Colin, A, additional, Mennella, A, additional, Morgante, G, additional, Tomasi, M, additional, Battaglia, P, additional, Lapolla, M, additional, Bersanelli, M, additional, Butler, R C, additional, Cuttaia, F, additional, D'Arcangelo, O, additional, Davis, R, additional, Franceschet, C, additional, Galeotta, S, additional, Gregorio, A, additional, Hughes, N, additional, Jukkala, P, additional, Kettle, D, additional, Laaninen, M, additional, Leutenegger, P, additional, Leonardi, R, additional, Mandolesi, N, additional, Maris, M, additional, Meinhold, P, additional, Miccolis, M, additional, Roddis, N, additional, Sambo, L, additional, Sandri, M, additional, Silvestri, R, additional, Tuovinen, J, additional, Valenziano, L, additional, Varis, J, additional, Villa, F, additional, Wilkinson, A, additional, and Zonca, A, additional

Published
2009
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25. The linearity response of the Planck-LFI flight model receivers

Author

Mennella, A, primary, Villa, F, additional, Terenzi, L, additional, Cuttaia, F, additional, Battaglia, P, additional, Bersanelli, M, additional, Butler, R C, additional, D'Arcangelo, O, additional, Artal, E, additional, Davis, R, additional, Frailis, M, additional, Franceschet, C, additional, Galeotta, S, additional, Gregorio, A, additional, Hughes, N, additional, Jukkala, P, additional, Kettle, D, additional, Kilpiä, V-H, additional, Laaninen, M, additional, Lapolla, P M, additional, Leonardi, R, additional, Leutenegger, P, additional, Lowe, S, additional, Mandolesi, N, additional, Maris, M, additional, Meinhold, P, additional, Mendes, L, additional, Miccolis, M, additional, Morgante, G, additional, Roddis, N, additional, Sandri, M, additional, Silvestri, R, additional, Stringhetti, L, additional, Tomasi, M, additional, Tuovinen, J, additional, Valenziano, L, additional, Zacchei, A, additional, Varis, J, additional, Wilkinson, A, additional, and Zonca, A, additional

Published
2009
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26. Planck-LFI radiometers' spectral response

Author

Zonca, A, primary, Franceschet, C, additional, Battaglia, P, additional, Villa, F, additional, Mennella, A, additional, D'Arcangelo, O, additional, Silvestri, R, additional, Bersanelli, M, additional, Artal, E, additional, Butler, R C, additional, Cuttaia, F, additional, Davis, R J, additional, Galeotta, S, additional, Hughes, N, additional, Jukkala, P, additional, Kilpiä, V-H, additional, Laaninen, M, additional, Mandolesi, N, additional, Maris, M, additional, Mendes, L, additional, Sandri, M, additional, Terenzi, L, additional, Tuovinen, J, additional, Varis, J, additional, and Wilkinson, A, additional

Published
2009
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27. Modeling the frequency response of microwave radiometers with QUCS

Author

Brian J. Williams, O. D'Arcangelo, A. Mennella, Peter Meinhold, Cristian Franceschet, Bastien Roucaries, Marco Bersanelli, Philip Lubin, Stefan Jahn, Andrea Zonca, and Ishai Rubin

Subjects
Frequency response, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Radiometer, Computer science, Instruments for CMB observations, Modeling of microwave systems, Spectral responses, Astrophysics::Instrumentation and Methods for Astrophysics, Impedance matching, FOS: Physical sciences, Low frequency, Electronic circuit simulation, Band-pass filter, Electronic engineering, Radio frequency, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Mathematical Physics, Microwave, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Characterization of the frequency response of coherent radiometric receivers is a key element in estimating the flux of astrophysical emissions, since the measured signal depends on the convolution of the source spectral emission with the instrument band shape. Laboratory Radio Frequency (RF) measurements of the instrument bandpass often require complex test setups and are subject to a number of systematic effects driven by thermal issues and impedance matching, particularly if cryogenic operation is involved. In this paper we present an approach to modeling radiometers bandpasses by integrating simulations and RF measurements of individual components. This method is based on QUCS (Quasi Universal Circuit Simulator), an open-source circuit simulator, which gives the flexibility of choosing among the available devices, implementing new analytical software models or using measured S-parameters. Therefore an independent estimate of the instrument bandpass is achieved using standard individual component measurements and validated analytical simulations. In order to automate the process of preparing input data, running simulations and exporting results we developed the Python package python-qucs and released it under GNU Public License. We discuss, as working cases, bandpass response modeling of the COFE and Planck Low Frequency Instrument (LFI) radiometers and compare results obtained with QUCS and with a commercial circuit simulator software. The main purpose of bandpass modeling in COFE is to optimize component matching, while in LFI they represent the best estimation of frequency response, since end-to-end measurements were strongly affected by systematic effects., Comment: 17 pages, 11 figures, published by JINST on December 20th, 2010, new version contains acknowledgements

Published
2010

28. Cryogenic environment and performance for testing the Planck radiometers

Author

A. de Rosa, Luca Terenzi, J. Tuovinen, A. Mennella, P. Leutenegger, R. Silvestri, N. Mandolesi, M. Tomasi, Marco Bersanelli, M. Laaninen, P. Jukkala, Cristian Franceschet, V. H. Kilpiä, N. Hughes, Francesco Cavaliere, Luca Valenziano, Luca Stringhetti, Gianluca Morgante, R. C. Butler, Fabrizio Villa, Fabricio Ferrari, Jussi Varis, P. Battaglia, and M. Lapolla

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Radiometer, business.industry, Cryogenics and thermal models, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Space instrumentation, symbols.namesake, Cryofacilities for system calibration, Instruments for CMB observations, symbols, Environmental science, Satellite, Instrumentation (computer programming), Aerospace engineering, Planck, Astrophysics - Instrumentation and Methods for Astrophysics, business, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Mathematical Physics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

This paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst The Planck LFI Radiometer Chain Assemblies (RCAs) have been calibrated in two dedicated cryogenic facilities. In this paper the facilities and the related instrumentation are described. The main satellite thermal interfaces for the single chains have to be reproduced and stability requirements have to be satisfied. Setup design, problems occurred and improving solutions implemented are discussed. Performance of the cryogenic setup are reported., This is an author-created, un-copyedited version of an article accepted for publication in JINST. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.1088/1748-0221/4/12/T12015

Published
2009

29. Design, development and verification of the 30 and 44 GHz front-end modules for the Planck Low Frequency Instrument

Author

F. Cuttaia, W. F. Winder, R. D. Davies, Todd Gaier, D. Kettle, A. Galtress, Roger J. Hoyland, D. S. Shepherd, C. Baines, M. Butlin, E. Blackhurst, Luca Stringhetti, Rodrigo Leonardi, Andrea Zonca, C. Castelli, N. Mandolesi, A. Mennella, Rc Butler, Marian Pospieszalski, D. Lawson, Althea Wilkinson, Peter Meinhold, M. Tomasi, O. D'Arcangelo, Luca Valenziano, Beatriz Aja, Marco Bersanelli, Eduardo Artal, S. R. Lowe, R. J. Davis, and N. Roddis

Subjects
Physics, Microwave radiometers, Noise temperature, Radiometer, business.industry, Linear polarization, Quantum limit, Transistor, Electrical engineering, FOS: Physical sciences, Low-noise amplifier, law.invention, Front and back ends, Space instrumentation, Instruments for CMB observations, law, Black-body radiation, HEMT amplifiers, Astrophysics - Instrumentation and Methods for Astrophysics, business, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Mathematical Physics
Abstract

We give a description of the design, construction and testing of the 30 and 44 GHz Front End Modules (FEMs) for the Low Frequency Instrument (LFI) of the Planck mission to be launched in 2009. The scientific requirements of the mission determine the performance parameters to be met by the FEMs, including their linear polarization characteristics. The FEM design is that of a differential pseudo-correlation radiometer in which the signal from the sky is compared with a 4-K blackbody load. The Low Noise Amplifier (LNA) at the heart of the FEM is based on indium phosphide High Electron Mobility Transistors (HEMTs). The radiometer incorporates a novel phase-switch design which gives excellent amplitude and phase match across the band. The noise temperature requirements are met within the measurement errors at the two frequencies. For the most sensitive LNAs, the noise temperature at the band centre is 3 and 5 times the quantum limit at 30 and 44 GHz respectively. For some of the FEMs, the noise temperature is still falling as the ambient temperature is reduced to 20 K. Stability tests of the FEMs, including a measurement of the 1/f knee frequency, also meet mission requirements. The 30 and 44 GHz FEMs have met or bettered the mission requirements in all critical aspects. The most sensitive LNAs have reached new limits of noise temperature for HEMTs at their band centres. The FEMs have well-defined linear polarization characteristcs., 39 pages, 33 figures (33 EPS files), 12 tables. Planck LFI technical papers published by JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/1748-0221

Published
2009

30. Planck-LFI radiometers' spectral response

Author

Marco Bersanelli, N. Hughes, L. Mendes, Eduardo Artal, Fabrizio Villa, Jussi Varis, J. Tuovinen, R. J. Davis, A. Mennella, R. Silvestri, Althea Wilkinson, P. Battaglia, F. Cuttaia, Luca Terenzi, V. H. Kilpiä, S. Galeotta, Andrea Zonca, R. C. Butler, O. D'Arcangelo, M. Laaninen, M. Maris, N. Mandolesi, M. Sandri, P. Jukkala, and Cristian Franceschet

Subjects
Physics, Microwave radiometers, Frequency response, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Radiometer, Spectral responses, Cosmic microwave background, Bandwidth (signal processing), Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Polarization (waves), Space instrumentation, symbols.namesake, Instruments for CMB observations, Broadband, ____, symbols, Center frequency, Planck, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Mathematical Physics, Astrophysics - Cosmology and Nongalactic Astrophysics, Remote sensing
Abstract

The Low Frequency Instrument (LFI) is an array of pseudo-correlation radiometers on board the Planck satellite, the ESA mission dedicated to precision measurements of the Cosmic Microwave Background. The LFI covers three bands centred at 30, 44 and 70 GHz, with a goal bandwidth of 20% of the central frequency. The characterization of the broadband frequency response of each radiometer is necessary to understand and correct for systematic effects, particularly those related to foreground residuals and polarization measurements. In this paper we present the measured band shape of all the LFI channels and discuss the methods adopted for their estimation. The spectral characterization of each radiometer was obtained by combining the measured spectral response of individual units through a dedicated RF model of the LFI receiver scheme. As a consistency check, we also attempted end-to-end spectral measurements of the integrated radiometer chain in a cryogenic chamber. However, due to systematic effects in the measurement setup, only qualitative results were obtained from these tests. The measured LFI bandpasses exhibit a moderate level of ripple, compatible with the instrument scientific requirements., 16 pages, 9 figures, this paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst

Published
2009

31. Advanced modelling of the Planck-LFI radiometers

Author

J. Tuovinen, Marco Bersanelli, S. Galeotta, Jussi Varis, Davide Maino, P. Platania, P. Guzzi, D. Kettle, O. D'Arcangelo, Roger J. Hoyland, Cristian Franceschet, N. Mandolesi, M. Laaninen, N. Hughes, P. Jukkala, Peter Meinhold, Rodrigo Leonardi, R. J. Davis, Althea Wilkinson, Fabrizio Villa, P. Battaglia, R. C. Butler, A. Mennella, Andrea Zonca, and Luca Terenzi

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Computer science, Cosmic microwave background, FOS: Physical sciences, symbols.namesake, Modeling of microwave systems, Software, Instruments for CMB observations, Planck, Microwave radiometers, Space instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instrumentation, Mathematical Physics, Remote sensing, Data processing, Noise temperature, Commercial software, Radiometer, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, business, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Low Frequency Instrument (LFI) is a radiometer array covering the 30-70 GHz spectral range on-board the ESA Planck satellite, launched on May 14th, 2009 to observe the cosmic microwave background (CMB) with unprecedented precision. In this paper we describe the development and validation of a software model of the LFI pseudo-correlation receivers which enables to reproduce and predict all the main system parameters of interest as measured at each of the 44 LFI detectors. These include system total gain, noise temperature, band-pass response, non-linear response. The LFI Advanced RF Model (LARFM) has been constructed by using commercial software tools and data of each radiometer component as measured at single unit level. The LARFM has been successfully used to reproduce the LFI behavior observed during the LFI ground-test campaign. The model is an essential element in the database of LFI data processing center and will be available for any detailed study of radiometer behaviour during the survey., 21 pages, 15 figures, this paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst

Published
2009

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