Far Field Phase Reconstruction Using Planar Near Field Scanning Techniques

Planar near field (NF) scanners enable the characterization of antennas in a compact space. Most publications on this topic do not consider the reconstructed far field (FF) phase of the antenna and limit their scope to the FF gain or directivity. In this work we show and discuss how the captured NF can be processed to retain the phase information of the FF. This is essential for capturing the single element patterns of electrically steerable array (ESA) antennas, since it allows to characterise the effects of the element spacings on the phase of the FF patterns.