Effective Non-Iterative Phase Retrieval of 2-D Bandlimited Signals with Applications to Antenna Characterization and Diagnostics

The phase retrieval problem is dealt with for the challenging case where just a single set of (phaseless) field data is available. In particular, the adoption of a new set of intersecting curves in the spectral plane allows decisive improvements over our recent approaches emulating the solution of crosswords puzzles, thus removing relevant limitations on the source size. Numerical examples support the given theory and confirm the effectiveness of the developed procedure.