Antonelli, Terry, Stout & Kraus, LLP
Satellite tracking apparatus and control method for vehicle-mounted receive antenna system
 The present invention relates to a satellite tracking apparatus and control method for performing attitude control of a vehicle-mounted antenna for receiving a satellite broadcasting and operating the antenna. The present invention employs a hybrid tracking method that performs tracking using an electronic beam in an elevation direction while performing mechanical tracking in an azimuth direction. The electronic tracking is employed in controlling the azimuth direction to compensate for a tracking error in the azimuth direction. While the tracking performance of the present invention is similar to that of the full-electronic antenna, the present invention achieves better beam efficiency by arranging radiating elements to be effective in front of the antenna, thereby realizing a high gain antenna. 
Electronics and Telecommunications Research Institute
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Seong Pal Soon Ik Chan Goo
Lee Jeon Park