08270899 is referenced by 11 patents and cites 40 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 a plurality of user terminals (16), each communicatively coupled with the satellite by a user link (17) where a ground based beam forming system (400) receives, via feeder link (13), return path signals (452) traveling from the user terminals (16) via the satellite (11) to the at least one gateway (12) and forward path signals (457) traveling from the at least one gateway (12) via the satellite (11) to the user terminals (16), and measures and corrects amplitude and phase errors of the return path signals (452) and the forward path signals (457).

Title
Ground-based beamforming for satellite communications systems
Application Number
12/856468
Publication Number
8270899 (B2)
Application Date
August 13, 2010
Publication Date
September 18, 2012
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
View Original Source