Patent ID: 7109937

Claim:
A phased array antenna system accommodating onto a platform for tracking a target moving relatively to the platform, comprising: a first planar active subsystem operable for receiving/transmitting an RF signal of a certain linear polarization direction and for selectively performing electronic scanning; a second, roll subsystem coupled to said active subsystem and operable for rotational movement of said active subsystem about a first axis perpendicular to a plane defined by said planar active subsystem; a third, elevation subsystem coupled to said second, roll subsystem and to a fourth azimuth subsystem, said azimuth subsystem defining a central axis of the antenna system and being operable for providing rotational movement of the first planar subsystem about the central axis, the elevation subsystem being configured to provide a certain angular orientation between said plane defined by said active subsystem and a plane defined by the azimuth subsystem, thereby allowing positioning said first planar active subsystem with respect to said target such that said linear polarization direction is substantially aligned with a linear polarization direction of RF radiation received and/or transmitted by the target.