A Large Combination Horizontal and Vertical Near-Field Measurement Facility for Satellite Antenna Characterization

Author: John Demas
Publication: AMTA 1997
Copyright Owner: NSI-MI Technologies

A large horizontal near field measurement facility has been validated and commissioned at Lockheed Martin’s Sunnyvale, CA facility. The new measurement facility will be used for characterizing antennas for a variety of satellites over a frequency range of 1 – 26.5 GHz. A horizontal near field scanner with a 14m x 7.8m (46’ x 26’) effective scan area has been designed to allow for 9.8m (32’) of vertical clearance permitting zenith oriented satellites to be easily positioned within the range and tested in an efficient manner. The facility will soon support the measurement of antennas that are in a vertical orientation. This is accomplished with a novel add-on that allows vertical planar near field scanning on the same range. The vertical scanner has an effective coverage area of 13.6m (45’) horizontal x 9m (30’) vertical. The system is being used to test commercial communications satellites.

 

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