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:
Feb. 27, 2001
Filed:
Jun. 01, 1999
Jonathan H. Gross, Gilbert, AZ (US);
John Richard Erlick, Scottsdale, AZ (US);
Thomas Peter Emmons, Jr., Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a satellite communications system (,), system capacity is improved using a satellite (,and,) that includes a main mission antenna (MMA) (,FIG.,), antenna subsystem (,), and controller (,). Antenna subsystem (,) comprises a beamformer and associated software to optimize the beam shape and cell position with respect to the satellite's location. In one example, beam optimization is performed using a location based on latitude. Satellite (,and,) determines its spatial position and determines its latitudinal location based on this position information. The satellite determines the number of cells, the cell sizes, and the beam steering angles required at this latitudinal location. In other cases, beam optimization is performed using a location based on latitude and longitude, system loading, and satellite health and status.