Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1996-10-30
1998-05-19
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342 81, 342372, H01Q 322
Patent
active
057541388
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) on earth's surface. Interference is mitigated placing a null in the transmit and receive antenna patterns at the location of the interfering signal by adjusting digital beam forming coefficients. As the interfering signal moves relative to the satellite, the interfering signal is tracked to maintain interference mitigation. The digital beam forming coefficients are also dynamically adjusted to help maximize signal quality of communications with subscriber units.
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Aguirre Sergio
Ma Stephen Chih-Hung
Turcotte Randy Lee
Gorrie Gregory J.
Motorola Inc.
Phan Dao L.
Tarcza Thomas H.
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