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    Dual-Band (S & C) Nested Concentric Cavity Conical Scanning RF Feed for Auto-Track Telemetry Systems

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    Author
    Hoory, Yossi
    Krepner, Itzik
    Pein, Joe
    Ganchrow, Ellie
    Affiliation
    Orbit Communications Ltd
    Issue Date
    2013-10
    
    Metadata
    Show full item record
    Rights
    Copyright © held by the author; distribution rights International Foundation for Telemetering
    Collection Information
    Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
    Publisher
    International Foundation for Telemetering
    Journal
    International Telemetering Conference Proceedings
    Abstract
    Recognizing the need for dual band tracking in missions where mobility and weight are crucial factors, Orbit Communications Ltd. has successfully designed and tested an S & C dual band, dual polarized feed with a total system bandwidth greater than 80%. The feed uses high RPM conical scan auto-track technology combined with two co-located concentric apertures that is able to achieve excellent tracking accuracy in a small volume that can efficiently feed small dishes, starting from 1.2 meter. This solution meets the needs of field deployment and tactical forces looking for compact and easy-to-assemble field telemetry. The outermost cavity operates at S-Band and the inner cavity at C-Band. The antenna is fed with orthogonally polarized inputs, enabling polarization diversity in all bands. The coaxial cavities provide nearly uniform feed beamwidths as well as coincident phase centers in both bands, which make it an optimal feed for a parabolic dish. The conical scan rotates at up to 3000 RPM, giving excellent tracking fidelity. The entire feed system has a low blocking diameter of just 18 cm (7") that make it possible to feed the entire range of parabolic dish diameters.
    Sponsors
    International Foundation for Telemetering
    ISSN
    0884-5123
    0074-9079
    Additional Links
    http://www.telemetry.org/
    Collections
    International Telemetering Conference Proceedings, Volume 49 (2013)

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