Very low-noise differential radiometer at 30 GHz for the PLANCK LFI

Beatriz Aja, Eduardo Artal, Luisa De La Fuente, Juan Pablo Pascual, Angel Mediavilla, Neil Roddis, Danielle Kettle, W. Frank Winder, Lluis Pradell i Cara, Pedro De Paco

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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.
    Original languageEnglish
    Pages (from-to)2050-2061
    Number of pages11
    JournalIEEE Transactions on Microwave Theory and Techniques
    Volume53
    Issue number6
    DOIs
    Publication statusPublished - Jun 2005

    Keywords

    • Cosmic microwave "Background (CMB)
    • Cryogenic
    • Low-noise amplifier (LNA)
    • Microwave radiometer
    • PLANCK low-frequency instrument (LFI)

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