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The PLANCK mission of the European Space Agency is devoted to produce sky maps of the cosmic microwave background radiation. The low-frequency instrument is a wide-band cryogenic microwave radiometer array operating at 30, 44, and 70 GHz. The design, test techniques, and performance of the complete differential radiometer at 30 GHz are presented. This(More)
In this paper we present the Low Frequency Instrument (LFI), designed and developed as part of the Planck space mission, the ESA program dedicated to precision imaging of the cosmic microwave background (CMB). Planck-LFI will observe the full sky in intensity and polarisation in three frequency bands centred at 30, 44 and 70 GHz, while higher frequencies(More)
The European Space Agency’s Planck satellite, launched on 14 May 2009, is the third-generation space experiment in the field of cosmic microwave background (CMB) research. It will image the anisotropies of the CMB over the whole sky, with unprecedented sensitivity ( ΔT T ∼ 2 × 10−6) and angular resolution (∼5 arcmin). Planck will provide a major source of(More)
A. Mennella, M. Bersanelli, R.C. Butler, D. Maino, N. Mandolesi, G. Morgante, L. Valenziano, F. Villa, T. Gaier, M. Seiffert, S. Levin, C. Lawrence, P. Meinhold, P. Lubin, J. Tuovinen, J. Varis ,T. Karttaavi, N. Hughes, P. Jukkala, P. Sjöman, P. Kangaslahti, N. Roddis, D., Kettle, F. Winder, E. Blackhurst, R. Davis, A. Wilkinson, C. Castelli, B. Aja, E.(More)
The 26–36 GHz receiver for a radio astronomy radiometer, to characterize the polarization of the Cosmic Microwave Background, is presented. This receiver is based on very low noise cryogenically cooled amplifiers in the front-end module, while in the back-end module a broadband amplification and direct detection chain is operated at room temperature.(More)
This paper presents the analysis, design, and characterization of the thirty gigahertz instrument receiver developed for the Q-U-I Joint Tenerife experiment. The receiver is aimed to obtain polarization data of the cosmic microwave background radiation from the sky, obtaining the Q, U, and I Stokes parameters of the incoming signal simultaneously. A(More)
  • J . A . Rubiño - Mart́ın, Rafael Rebolo, +37 authors B . Etxeita
  • 2008
J.A. Rubiño-Mart́ın, R. Rebolo, M. Tucci, R. Génova-Santos, S.R. Hildebrandt, R. Hoyland, J.M. Herreros, F. Gómez-Reñasco, C. López Caraballo, E. Mart́ınez-González, P. Vielva, D. Herranz, F.J. Casas, E. Artal, B. Aja, L. de la Fuente, J.L. Cano, E. Villa, A. Mediavilla, J.P. Pascual, L. Piccirillo, B. Maffei, G. Pisano, R.A. Watson, R. Davis, R. Davies, R.(More)
We present the calibration and scientific performance parameters of the Planck Low Frequency Instrument (LFI) measured during the ground cryogenic test campaign. These parameters characterise the instrument response and constitute our optimal pre-launch knowledge of the LFI scientific performance. The LFI shows excellent 1/ f stability and rejection of(More)
A GaN high electron mobility transistor technology with a gate length of 0.25 μm has been used to design and fabricate a cascode broadband low noise amplifier (LNA). The two-stage monolithic microwave integrated circuit (MMIC) with feedback topology yields a bandwidth of 0.5-3 GHz at a constant gain of 35 dB and noise figures of less than 1.5 dB. A(More)