Brigham Young University BYU ScholarsArchive Theses and Dissertations 2015-11-01 High-Efficiencyassiv P e and Active Phased Arrays and Array Feeds for Satellite Communications Zhenchao Yang Brigham Young University Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the Electrical and Computer Engineering Commons BYU ScholarsArchive Citation Yang, Zhenchao, "High-Efficiencyassiv P e and Active Phased Arrays and Array Feeds for Satellite Communications" (2015). Theses and Dissertations. 5741. https://scholarsarchive.byu.edu/etd/5741 This Dissertation is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact
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[email protected]. High-Efficiency Passive and Active Phased Arrays and Array Feeds for Satellite Communications Zhenchao Yang A dissertation submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Doctor of Philosophy Karl F. Warnick, Chair Neal K. Bangerter Brian D. Jeffs Michael A. Jensen David G. Long Department of Electrical and Computer Engineering Brigham Young University November 2015 Copyright © 2015 Zhenchao Yang All Rights Reserved ABSTRACT High-Efficiency Passive and Active Phased Arrays and Array Feeds for Satellite Communications Zhenchao Yang Department of Electrical and Computer Engineering, BYU Doctor of Philosophy Satellite communication (Satcom) services are used worldwide for voice, data, and video links due to various appealing features. Parabolic reflector antennas are typically used to serve a cost effective scheme for commercial applications. However, mount degradation, roof sag, and orbital decay motivate the need for beam steering.