ON-SITE CALIBRATION OF ARRAY ANTENNA SYSTEMS
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United States of America Patent
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Oct 17, 2017
Grant Date -
Oct 19, 2017
app pub date -
Nov 19, 2014
filing date -
Nov 19, 2014
priority date (Note) -
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Abstract
The present invention is directed to an antenna system and a method that is configured to compute calibration element voltage gain patterns as functions of a digital antenna model and a plurality of complex beamformer voltages, determine calibration through path transfer functions from the plurality of complex voltages, and remove the calibration element voltage gain patterns from the calibration through path transfer functions to determine a beamforming network transfer function. The beamforming network transfer function and the far-field element voltage gain patterns are combined to obtain a system transfer function used to revise a calibration table.
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