Communications: radio wave antennas – Antennas – With means for moving directive antenna for scanning,...
Patent
1984-02-03
1988-06-21
Sikes, William L.
Communications: radio wave antennas
Antennas
With means for moving directive antenna for scanning,...
343894, H01Q 300
Patent
active
047527803
ABSTRACT:
An apparatus for sensing the position of a satellite receiving antenna with respect to a conventional polar mount. A linear encoding strip is fixed to the antenna, and moves rectilinearly between a radiation source and a radiation detector as the position of the antenna changes. A radiation source comprising a plurality of elements and a radiation detector also comprising a plurality of elements are positioned on opposing sides of the linear encoding strip and in registration with one another. A plurality of interstices are defined on the linear encoding strip at predetermined linear positions corresponding to desired positions of the antenna. Each interstice defines at least one aperture. The number of the apertures and the position of the apertures are used to encode each interstice with a position number. When the antenna is positioned so that one of the interstices of the linear encoding strip is positioned between the opposing radiation source and radiation detector, the number and position of the apertures comprising the interstice is sensed by the radiation detector. The sensed position number may be compared with a user-selected code, and the antenna may be moved by the antenna positioning device until the interstice encoded with a desired position number is between the radiation source and the radiation detector. The encoding strip may be programmed by using adhesive decals. The radiation source and the radiation detector may be housed in a weatherproof housing comprising a modified conventional PVC pipe fitting.
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Sikes William L.
Wimer Michael C.
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