Antenna positioner system

Details Antenna positioner system Antenna positioner system

2007-11-20

2007-11-20

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

With means for moving directive antenna for scanning,...

C343S757000, C343S766000

Reexamination Certificate

active

11261268

ABSTRACT:
A three-axis antenna positioner has an X-Y over azimuth configuration, and includes an azimuth drive assembly, an X-axis drive assembly, and a Y-axis drive assembly. Each drive assembly is independently operable. The azimuth drive assembly imparts 540° azimuthal rotational motion to an antenna about an azimuth axis. The X-axis drive assembly rotates the antenna about a horizontal X-axis at elevation angles between −90° and +90°. The Y-axis drive assembly rotates the antenna about a Y-axis at elevation complement angles between −2° and +105°. The azimuth axis, the X-axis, and the Y-axis all intersect at a common intersection point, and are mutually orthogonal. A controller operates each drive assembly so as to minimize antenna tracking velocity and acceleration. Each drive assembly may include dual drives, and may be operated in a bias drive mode to substantially eliminate backlash.

REFERENCES:
patent: 4786912 (1988-11-01), Brown et al.
patent: 5419521 (1995-05-01), Matthews
patent: 6198452 (2001-03-01), Beheler et al.
patent: 2003/0107525 (2003-06-01), Ehrenberg et al.
patent: 3739546 (1989-06-01), None

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