07787819 is referenced by 11 patents and cites 36 patents.

Methods, systems and apparatus for ground-based beamforming of a satellite communications payload (200) within a satellite communications network (100). An embodiment of the invention comprises a satellite (11) communicatively coupled to at least one gateway (12) via a feeder link (13) and further coupled to a plurality of user terminals (16), each communicatively coupled with the satellite by a user link (17). A ground based beam forming system (400) measures and corrects amplitude and phase errors of a plurality of return path signals (452) traveling from the user terminals (16) via the satellite (11) to the at least one gateway (12), and measures and corrects amplitude and phase errors of a plurality of forward path signals (457) traveling from the at least one gateway (12) via the satellite (11) to the user terminals (16).

Title
Ground-based beamforming for satellite communications systems
Application Number
11/467490
Publication Number
7787819 (B2)
Application Date
August 25, 2006
Publication Date
August 31, 2010
Inventor
Gilles Dubellay
Mountain View
CA, US
Douglas Burr
San Jose
CA, US
Rolando Menendez
Campbell
CA, US
John L Walker
Union City
CA, US
Agent
Weaver Austin Villeneuve & Sampson
Assignee
Space Systems Loral
CA, US
IPC
H04B 15/00
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