Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna orientation
Patent
1996-12-30
1999-01-26
Oen, William
Communications: directive radio wave systems and devices (e.g.,
Directive
Including antenna orientation
H01Q 300
Patent
active
058643168
ABSTRACT:
A fixed terminal forms a highly directed beam toward a satellite and adaptively maintains a beam to track the satellite as the satellite moves relative to the fixed terminal. The fixed terminal includes a database that contains the positional information of all potential communication satellites. The fixed terminal antenna system provides for both simple auto-steering on installation for ease of use and terminal access to multiple satellite services. The proximity detector detects objects that may interfere with the antenna beam. The proximity detector includes infrared sensors, sonar detectors, motion detectors and optical devices to determine a range and bearing of objects that may interfere with the antenna beam. When an object may be harmed or interfere with the antenna beam, an alarm may be activated to warn the user and/or the object of potential harm from the electromagnetic energy transmitted by the directed antenna.
REFERENCES:
patent: 5440290 (1995-08-01), McCullough et al.
patent: 5541609 (1996-07-01), Stutzman et al.
patent: 5559806 (1996-09-01), Kurby et al.
English language PCT International Search Report dated Jun. 24, 1998.
Bradley James Frederick
Cooper Paul W.
AT&T Corporation
Oen William
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