Shaped corrugated horns for Cosmic Microwave Background anisotropy measurements

B. Maffei, P. A R Ade, C. E. Tucker, E. Wakui, R. J. Wylde, J. A. Murphy, R. M. Colgan

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Novel corrugated horn have been modelled, manufactured and measured which give low-sidelobe patterns required by CMB Anisotropy experiments. These horns have a Back-to-Back structure with mode filtering at their centres. They are corrugated to give axial symmetric low-sidelobe patterns, profiled to reduce their length, and have a Gaussian flare at their entrance apertures to further suppress sidelobes to -40 dB. Modelling and experimental results show excellent agreement to well below 50 dB.
    Original languageEnglish
    Pages (from-to)2023-2033
    Number of pages10
    JournalInternational Journal of Infrared and Millimeter Waves
    Volume21
    Issue number12
    DOIs
    Publication statusPublished - Dec 2000

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