3D Radiation Pattern Reconstruction from Reduced Far-Field Sampling via Iterative Spectral Interpolation

This paper presents a method for reconstructing the three-dimensional antenna radiation pattern from reduced sampled far-field measurements, thereby reducing the need for extensive mechanical probe scans. The sampling density is selected according to planar near-field measurement principles, enabling an initial plane-wave representation of the radiation field. An iterative interpolation procedure in the spectral domain is then used to recover the missing angular data while accounting for practical measurement resolution limits. The complete source code written in Julia programming language for the reconstruction algorithm is publicly available to support reproducibility and future research. Keywords: Antenna radiation, reconstruction algorithm, far-field pattern measurement, near-to-far field transformation