Patent ID: 8737944

Claim:
An antenna array for a mobile communications system comprising: a plurality of receive paths, an individual one of the receive paths being connected between an antenna element and an analogue-to-digital converter, the analogue-to-digital converter digitizing a receive signal to form a digitized receive signal, a calibration signal processor connected to the analogue-to-digital converters of the plurality of the receive paths, wherein the calibration signal processor comprises a cross-analyzer for cross-analyzing the digitized receive signals of the plurality of receive paths with each other, an averager for forming a temporal average of an output of the cross-analyzer, the temporal average indicating a receive signal relationship between the digitized receive signals of the plurality of receive paths, and a comparator for comparing the receive signal relationship with a predetermined relationship and for determining a deviation between the receive signal relationship and the predetermined relationship, wherein the calibration signal processor is adapted to define a reference receive path and to use the temporal average of the receive signal relationship to calibrate of at least one of the plurality of receive paths.