Analysis of the 1/f-noise effects on the Planck low-frequency instrument receivers

The aim of this work is to analyse the l/f-noise effects on the performance of the pseudo-correlation receiver. This receiver concept is the baseline for the Low Frequency Instrument (LFI) radiometers in the Planck mission, d ue to its suitability for the minimisation of the measurement errors associ ated with low-frequency gain instabilities. Calculations of the effects of different kinds of l/f noise sources on the receiver performance have been carried-out, taking into account gain, phase and noise temperature imbalanc es in the parallel chains of this receiver. Critical issues in the minimisa tion of the harmful influence of the l/f noise on the Planck LFI are addres sed.