The CMB polarization is the Everest in the quest to characterize the earliest photons from the
Universe. After a long list of ever-decreasing upper limits, a detection of polarization was …

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 …

A complete radiometer simulation framework with special emphasis on high frequencies and
switched system performance is proposed. The simulation procedures have been tested on …

Abstract 70 GHz radiometer front-end and back-end modules for the Low Frequency
Instrument of the European Space Agency's Planck Mission were built and tested. The …

This paper presents and discusses several methods for predicting the low-frequency (LF)
noise at the output of a mm-wave detector. These methods are based on the extraction of LF …

To asses stability against 1/f noise, the Low Frequency Instrument (LFI) on-board the Planck
mission will acquire data at a rate much higher than the data rate allowed by the science …

En esta Tesis se ha realizado análisis, diseño y caracterización de los amplificadores de
bajo ruido y banda ancha en tecnología de GaAs PHEMT con aplicación a los módulos …

Large ground-based radio telescopes are increasingly being equipped with multibeam feed
systems to enable simultaneous observation of a larger part of the sky. The aim of the One …

In this work, the nature of the microwave background is discussed. It is advanced that the
2.725 K monopole signal, first detected by Penzias and Wilson, originates from the Earth …

This work describes the principle of operation, assembly and performance of one branch of
the 44 GHz back end module (BEM) for the Planck low frequency instrument (LFI). This …