Digitally-Controlled Polarization-Forming Transmitting Antenna for 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.
[1] M. Ueba,et al. Network performance evaluations for Ku band mobile satellite communications system based on Shinkansen railroad's propagation conditions , 2005, VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005..
[2] Makoto Kawai,et al. An Adaptive Multiple Beam System Concept , 1987, IEEE J. Sel. Areas Commun..
[3] Kiyoshi Kobayashi,et al. Frequency Asynchronous Cross-Polarization Interference Canceller for Variable Polarization Frequency Division Multiplexing (VPFDM) , 2009, IEICE Trans. Commun..