Multi-element PAA calibration with REV method

Phased array antenna (PAA) calibration is the process of determining the PAA channel characteristics; these characteristics are used in beam forming algorithms. In "contactless" PAA calibration methods, measurements are made by a stationary probe antenna placed away from the tested antenna, and the channel characteristics are determined from the measured data. Two of these methods are the MTE and REV methods, based on power only measurements. The MTE and REV calibration methods are described. The special case of the multi-channel antenna (several thousands of elements) is of main interest. A calibration method based on antenna partitioning, channel calibration inside parts, and inter-parts calibration is presented.