Data reduction in the NF–FF transformation with bi-polar scanning

An efficient near-field–far-field transformation with bi-polar scanning, which compensates for the effects of the measurement probe, is proposed in this paper. It is based on the theoretical results relevant to the nonredundant sampling representation of electromagnetic fields and, as a consequence, it requires a number of data—remarkably lower than that needed by the standard bi-polar technique. Numerical examples assessing the accuracy and the stability of the far-field reconstruction process are presented