Method and intelligent digital beam forming system responsive to

Details Method and intelligent digital beam forming system responsive to Method and intelligent digital beam forming system responsive to

1996-10-30

1998-05-19

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342372, 342374, H01Q 322

Patent

active

057541396

ABSTRACT:
An intelligent digital beam former (10) in conjunction with a satellite based array antenna (20) provides a plurality of dynamically controllable antenna beams (52) for communication with subscriber units (90) in response to demand for communication services. Geographic portions within the satellite's footprint that have a higher-demand for communication services are dynamically provided additional antenna beams while geographic portions having a lower demand for communication services are provided less antenna beams. When used on a non-geostationary satellite, the digital beam forming coefficients are dynamically adjusted to steer the antenna beams to maintain their ground location. The antenna beams are also shaped to help optimized geographic coverage.

REFERENCES:
patent: 3737899 (1973-06-01), Georgopoulos
patent: 4845504 (1989-07-01), Roberts et al.
patent: 4996532 (1991-02-01), Kirimoto et al.
patent: 5059966 (1991-10-01), Fujisaka et al.
patent: 5086302 (1992-02-01), Miller
patent: 5392257 (1995-02-01), Gilmour

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