Data di Pubblicazione:
2002
Citazione:
1/f noise and other systematic effects
in the Planck-LFI radiometers / M. Seiffert, A. Mennella, C. Burigana, N. Mandolesi, M. Bersanelli, P. Meinhold, P. Lubin. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 391:3(2002), pp. 1185-1197.
Abstract:
We use an analytic approach to study the susceptibility of the PLANCK Low Frequency Instrument radiometers to various systematic effects. We examine the effects of fluctuations in amplifier gain, in amplifier noise temperature and in the reference load temperature. We also study the effect of imperfect gain modulation, non-ideal matching of radiometer parameters, imperfect isolation in the two legs of the radiometer and back-end 1/f noise. We find that with proper gain modulation 1/f gain fluctuations are suppressed, leaving fluctuations in amplifier noise temperature as the main source of 1/f noise. We estimate that with a gain modulation factor within $\pm 1\%$ of its ideal value the overall 1/f knee frequency will be relatively small ( <0.1 Hz).
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Cosmology: cosmic microwave background, observations; Instrumentation: detectors; Methods: analytical
Elenco autori:
M. Seiffert, A. Mennella, C. Burigana, N. Mandolesi, M. Bersanelli, P. Meinhold, P. Lubin
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