Antenna pointing mechanism
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United States of America Patent
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Feb 14, 1995
Grant Date -
N/A
app pub date -
Sep 14, 1992
filing date -
Sep 14, 1992
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An antenna pointing mechanism for a highly directional antenna which avoids the aforenoted problems. The mechanism including the antenna are rendered substantially immune to bending and play-induced movements resulting from vibration or the like, making it highly useful for land based vehicles, ships, and particularly for aircraft. It also provides the ability to point the antenna over elevational angles exceeding 180.degree., making it particularly useful for communication with satellites from aircraft. The antenna pointing mechanism is comprised of a directional antenna having a central axis, first apparatus for supporting the antenna about a pitch axis which is orthogonal to the central axis and which passes through about the center of mass of the antenna, an electromagnetically transparent yoke surrounding the antenna for supporting the first apparatus, apparatus for rotatably retaining the yoke apparatus at opposite ends thereof at positions along a roll axis, first independent substantially electromagnetically transparent driving apparatus for driving the yoke to rotate about the pitch axis, and second independent substantially electromagnetically transparent driving apparatus for driving the antenna to rotate about the pitch axis.
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