Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
1999-06-01
2001-02-27
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357490
Reexamination Certificate
active
06195037
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to satellite communication systems and, more particularly, to a method and apparatus for increasing system capacity using antenna beamforming in satellite communications systems.
BACKGROUND OF THE INVENTION
A communications system has a service area associated with it. In satellite communication systems, this coverage area is provided by multiple satellites. The coverage area of individual satellites must be designed so that total system coverage is complete with overlap regions minimized and coverage gaps eliminated. Optimization of this problem is essential to provide complete coverage at minimal cost
Thus, there continues to be a need for an improved technique for managing satellite antenna beam patterns in a satellite communications system. In particular, what are needed are a method and apparatus for establishing antenna beam patterns while increasing power efficiency and channel reuse efficiency for satellites in a satellite communications system.
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patent: 5367304 (1994-11-01), Jan et al.
patent: 5561836 (1996-10-01), Sowles et al.
patent: 5563606 (1996-10-01), Wang
patent: 5589834 (1996-12-01), Weinberg
patent: 5732387 (1998-03-01), Armbruster et al.
patent: 5736959 (1998-04-01), Patterson et al.
patent: 0549220 (1993-06-01), None
Emmons, Jr. Thomas Peter
Erlick John Richard
Gross Jonathan H.
Bogacz Frank J.
Motorola Inc.
Phan Dao L.
Tarcza Thomas H.
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