Patent ID: 6911949
Filing Date: 2005-06-28
Classification: H01Q

Abstract:
1. A system for stabilizing at least two antennas on a mobile platform, the antennas including a first antenna associated with a first geo-stationary satellite and a second antenna associated with a second geo-stationary satellite, the system comprising: (a) an upper alignment system configured for being a common support for the antennas, said upper alignment system having at least one degree of freedom, said upper alignment system including an intermediate element, said upper alignment system being configured for pointing the antennas relative to said intermediate element, such that the angular displacement between the first antenna and the second antenna is substantially matched with the angular displacement between the first geo-stationary satellite and the second geo-stationary satellite; and (b) a lower alignment system mechanically connected to said upper alignment system and the mobile platform, said lower alignment system having three degrees of freedom, said lower alignment system being configured for maintaining the orientation of said intermediate element in order to compensate for rotation of the mobile platform, such that the first antenna and the second antenna are maintained pointing toward the first geo-stationary satellite and the second geo-stationary satellite, respectively.