Digitally-Controlled Polarization-Forming Transmitting Antenna for Mobile Satellite Communication Systems

Yoshinori SUZUKI  Kiyoshi KOBAYASHI  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.6   pp.1707-1715
Publication Date: 2011/06/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1707
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Satellite Communications
electrically polarization forming,  transmitting antenna,  mobile satellite communication systems,  

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This paper presents a novel electrical polarization forming antenna for mobile satellite communication systems using linear polarization. To electrically form the desired polarization, it is necessary to excite the two orthogonal polarization antenna planes with appropriate weights. The proposed antenna uses digitally-based polarization and calibration functions to characterize the two RF paths. The calibration techniques used are critical to accurately forming the desired polarization. Proposed calibration techniques are very simple; the feedback signal consists of just amplitude levels. The proposals are validated by polarization forming measurements conducted on a fabricated antenna.