Patent ID: 7492323

Claim:
An antenna assembly for satellite tracking, said antenna assembly comprising: a master antenna for receiving and transmitting first satellite signals to and from a master antenna satellite in a first frequency band, a slave antenna for receiving second satellite signals from a slave antenna satellite in a second satellite band, said master and slave antennas being mounted on the same stabilizing platform, a master drive assembly for mechanically changing the direction of a physical bore-sight axis of the master antenna, and a slave drive assembly for mechanically changing the direction of a physical bore-sight axis of the slave antenna, wherein said master and slave assemblies are adapted for arranging the physical bore-sight axes of the master antenna and the slave antenna at different directions in relation to each other in response to one or more master-slave control signals, wherein the antenna assembly further comprises control means for providing one or more master-slave control signals to the slave drive assembly to thereby control the arrangement of the direction of the physical bore-sight axis of the slave antenna in relation to the physical bore-sight axis of the master antenna so that the angular distance in azimuth between said physical bore-sight axes is set at a given azimuth value, ALPHA(AZ), and wherein the control means for providing the one or more master-slave controls signals to the slave drive assembly is further adapted for providing control signals to thereby control the arrangement of the direction of the physical bore-sight axis of the slave antenna so that the angular distance in elevation between the physical bore-sight axis of the slave antenna and the horizontal plane is set at a given elevation value, ALPHA(ELS).