July 2002
نویسنده
چکیده
The gravity deformations of the ATCA main reflector, as well as the displacements in the sub-reflector and feed, have been surveyed at a set of elevations by VMS (AT 39.3/109). In this report, I quantify these deformations and displacements and examine their effects on the antenna performance at 90 GHz. I have computed the far-field radiation pattern at each of the survey elevations and the elevation dependence of the antenna gain.
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