A phased array antenna system, comprising: a first beamformer stage (268, 270, 306, 308) comprising a first cluster former (268, 306) coupled to a first aperture that includes a first set of phased array antenna elements (36, 38, 40) and a second cluster former (270, 308) coupled to a second aperture that includes a second set of phased array antenna elements (42, 44, 46), the first cluster former configured to produce a first plurality of first antenna beams (226, 228, 230) based on at least two electromagnetic signals from the first set of phased array antenna elements, the second cluster former configured to produce a second plurality of first antenna beams (234, 236, 238) based on at least two electromagnetic signals from the second set of phased array antenna elements, the first plurality of first antenna beams (226, 228, 230) producing a first beam cluster that provides partial coverage for a first field of view associated with the first aperture, the second plurality of first antenna beams (234, 236, 238) producing a second beam cluster that provides partial coverage for a second field of view associated with the second aperture; a selector (266, 310, 312) configured to select between the first plurality of first antenna beams and the second plurality of first antenna beams to allocate a cluster of first antenna beams for a corresponding field of view (232, 240), the cluster of first antenna beams consisting of the first beam cluster when the first plurality of first antenna beams (226, 228, 230) corresponding to the first field of view is selected or the cluster of first antenna beams consisting of the second beam cluster when the second plurality of first antenna beams (234, 236, 238) corresponding to the second field of view is selected; and a second beamformer stage (272, 314, 316) configured to receive the cluster of first antenna beams from the selector (266, 310, 312), the second beamformer stage (272, 314, 316) further configured to produce at least one second antenna beam (242, 244, 246, 248, 250, 252, 254, 256, 258, 260, 262, 264) from each antenna beam in the cluster of first antenna beams, wherein the at least one second antenna beam (242, 244, 246, 248, 250, 252, 254, 256, 258, 260, 262, 264) is steered to a region in the corresponding field of view (232, 240). a first beamformer stage (268, 270, 306, 308) comprising a first cluster former (268, 306) coupled to a first aperture that includes a first set of phased array antenna elements (36, 38, 40) and a second cluster former (270, 308) coupled to a second aperture that includes a second set of phased array antenna elements (42, 44, 46), the first cluster former configured to produce a first plurality of first antenna beams (226, 228, 230) based on at least two electromagnetic signals from the first set of phased array antenna elements, the second cluster former configured to produce a second plurality of first antenna beams (234, 236, 238) based on at least two electromagnetic signals from the second set of phased array antenna elements, the first plurality of first antenna beams (226, 228, 230) producing a first beam cluster that provides partial coverage for a first field of view associated with the first aperture, the second plurality of first antenna beams (234, 236, 238) producing a second beam cluster that provides partial coverage for a second field of view associated with the second aperture; a selector (266, 310, 312) configured to select between the first plurality of first antenna beams and the second plurality of first antenna beams to allocate a cluster of first antenna beams for a corresponding field of view (232, 240), the cluster of first antenna beams consisting of the first beam cluster when the first plurality of first antenna beams (226, 228, 230) corresponding to the first field of view is selected or the cluster of first antenna beams consisting of the second beam cluster when the second plurality of first antenna beams (234, 236, 238) corresponding to the second field of view is selected; and a second beamformer stage (272, 314, 316) configured to receive the cluster of first antenna beams from the selector (266, 310, 312), the second beamformer stage (272, 314, 316) further configured to produce at least one second antenna beam (242, 244, 246, 248, 250, 252, 254, 256, 258, 260, 262, 264) from each antenna beam in the cluster of first antenna beams, wherein the at least one second antenna beam (242, 244, 246, 248, 250, 252, 254, 256, 258, 260, 262, 264) is steered to a region in the corresponding field of view (232, 240).