| CPC G01R 29/0892 (2013.01) [G01R 29/0871 (2013.01)] | 20 Claims |
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1. A method for testing an antenna-under-test (AUT), the method comprising:
at each respective position, j, of a plurality of positions within a scan area:
receiving, by a respective probe antenna element of a plurality of probe antenna elements of a receiver, a respective near-field (NF) over-the-air (OTA) signal from the AUT as an electric field vector, E(i,j), wherein i denotes the respective probe antenna element and j denotes the respective position;
performing an alignment procedure to align reception locations for signals received by different ones of the plurality of probe antenna elements;
determining a plurality of respective correction factors that characterize amplitude and phase discrepancies between a first reference probe antenna element of the plurality of probe antenna elements and respective second probe antenna elements of the plurality of probe antenna elements;
applying the plurality of respective correction factors to the NF OTA signals received by the respective second probe antenna elements to obtain respective corrected signals;
for each respective reception location within the scan area, combining the corrected signals received at the respective reception location to obtain a respective average signal;
determining a far-field (FF) transmission pattern for the AUT based at least in part on the average signals; and
storing the FF transmission pattern in a non-transitory computer readable memory medium.
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