TY - JOUR
T1 - Very low-noise differential radiometer at 30 GHz for the PLANCK LFI
AU - Aja, Beatriz
AU - Artal, Eduardo
AU - De La Fuente, Luisa
AU - Pascual, Juan Pablo
AU - Mediavilla, Angel
AU - Roddis, Neil
AU - Kettle, Danielle
AU - Winder, W. Frank
AU - Pradell i Cara, Lluis
AU - De Paco, Pedro
PY - 2005/6
Y1 - 2005/6
N2 - 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 elegant breadboard 30-GHz radiometer is composed of a front-end module (FEM) assembled at the Jodrell Bank Observatory, Cheshire, U.K., and a back-end module assembled at the Universidad de Cantabria, Cantabria, Spain, and Telecomunicació, Universitat Politécnica de Catalunya, Barcelona, Spain. The system noise temperature was excellent, mainly due to the very low noise performance of the FEM amplifiers, which achieved an average noise temperature of 9.4 K. © 2005 IEEE.
AB - 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 elegant breadboard 30-GHz radiometer is composed of a front-end module (FEM) assembled at the Jodrell Bank Observatory, Cheshire, U.K., and a back-end module assembled at the Universidad de Cantabria, Cantabria, Spain, and Telecomunicació, Universitat Politécnica de Catalunya, Barcelona, Spain. The system noise temperature was excellent, mainly due to the very low noise performance of the FEM amplifiers, which achieved an average noise temperature of 9.4 K. © 2005 IEEE.
KW - Cosmic microwave "Background (CMB)
KW - Cryogenic
KW - Low-noise amplifier (LNA)
KW - Microwave radiometer
KW - PLANCK low-frequency instrument (LFI)
U2 - 10.1109/TMTT.2005.848815
DO - 10.1109/TMTT.2005.848815
M3 - Article
SN - 1557-9670
VL - 53
SP - 2050
EP - 2061
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 6
ER -