This chapter focuses on satellite communications antennas. It provides an overview of the most common antenna designs used in today’s communications satellite systems. It presents examples from actual satellite programs for each type of antenna. The ultimate purpose of the satellite antenna is to act like a spatial filter, focusing the antenna beam on the desired area on the Earth with the desired polarization, while being isolated from other areas. Satellite‐borne communications antennas are located very far from their service area on the Earth. UHF communications satellites often use downlink frequencies around 250MHz and uplink frequencies around 310 MHz. An advantage of UHF, traditionally used for military communications, is that it easily penetrates deep foliage and other obstacles. The performance of each array element depends on its position within the feed array, since its mutual coupling environment is strongly affected by its location.

    military communication; satellite antennas; satellite communication; spaceborne radar; UHF antennas


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    Title :

    Antennas for Satellite Communications



    Published in:

    Publication date :

    2012-05-25


    Size :

    45 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English






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