@conference{10902/3485,
year = {2002},
month = {9},
url = {http://hdl.handle.net/10902/3485},
abstract = {The Planck satellite is a mission of the European Space
Agency due to be launched in 2007 to map the anisotropies in the
Cosmic Microwave Background radiation [1]. These anisotropies
hold the answers to many questions in cosmology. Planck receivers
are specifically designed to detect microwaves at frequencies in the
range between 30 and 850 GHz. Two different instruments are
under development to cover low and high frequency channels. The
Low Frequency Instrument (LFI) will take measurements in four
channels, from 30 to 100 GHz, based on differential radiometers
using broadband very low noise amplifiers and direct detection. The
Front End amplifiers are cooled at 20 K and the Back End
amplifiers are at high temperature. The LFI radiometer system will
have a total number of 46 receivers. The Back End Modules at 30
and 44 GHz are in development in Spain, using MMIC amplifiers
and Schottky diode detectors. At present the Qualified Model units
are under fabrication.},
publisher = {URSI 2002, XVII Simposium Nacional de la Unión Científica Internacional de Radio, Alcalá de Henares},
title = {Radiómetros del instrumento LFI de la misión Planck},
author = {Artal Latorre, Eduardo and Aja Abelán, Beatriz and Detratti, Marco and Fuente Rodríguez, Luisa María de la and Mediavilla Sánchez, Ángel and Pascual Gutiérrez, Juan Pablo},
}