The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2012
Filed:
Aug. 13, 2010
John L. Walker, Union City, CA (US);
Rolando Menendez, Campbell, CA (US);
Douglas Burr, San Jose, CA (US);
Gilles Dubellay, Mountain View, CA (US);
John L. Walker, Union City, CA (US);
Rolando Menendez, Campbell, CA (US);
Douglas Burr, San Jose, CA (US);
Gilles Dubellay, Mountain View, CA (US);
Space Systems/Loral, Inc., Palo Alto, CA (US);
Abstract
Methods, systems and apparatus for ground-based beamforming of a satellite communications payload () within a satellite communications network (). An embodiment of the invention comprises a satellite () communicatively coupled to at least one gateway () via a feeder link () and a plurality of user terminals (), each communicatively coupled with the satellite by a user link () where a ground based beam forming system () receives, via feeder link (), return path signals () traveling from the user terminals () via the satellite () to the at least one gateway () and forward path signals () traveling from the at least one gateway () via the satellite () to the user terminals (), and measures and corrects amplitude and phase errors of the return path signals () and the forward path signals ().