Mechanism for differential dual-directional antenna array
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United States of America Patent
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Jun 18, 2002
Grant Date -
N/A
app pub date -
Jun 22, 2001
filing date -
Jun 22, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive mechanism for an antenna array mounted on a moving vehicle. The antenna array is mounted on a disc having two motors which, cooperatively, rotate the disc and rotate a number of antenna elements mounted on the disc. By rotating the antenna elements, the main lobe of the array may be scanned towards a satellite in the elevation plane. To track a moving source from a moving vehicle, one of the motors rotates the disc as a whole, thereby scanning the beam in the azimuth plane. Each antenna element is at an angle to the vertical so that, by rotating the disc to face the direction of the signal source, such as a satellite, a better signal can be obtained.
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