Phaseless bi-polar near-field measurements using a two-plane squared amplitude interpolation algorithm

A phase retrieval algorithm and measured results applicable to the bipolar planar near-field technique in which the measurement planes have limited separation has been presented. An optimal sampling interpolation (OSI) algorithm operating on the measured squared amplitude bi-polar near-field data has also been presented. Phase retrieval results were generally found to be very good. The success of any such algorithm, however, is dependent on many factors including, for example, the proximity of the "initial guess" to the actual solution. The presented measured results indicate that the phase retrieval problem is a tractable problem in the bi-polar planar near-field measurement modality.