Enhanced Effective Aperture Distribution Function for Characterizing Large-Scale Antenna Arrays

Accurate characterization of large-scale antenna arrays is growing in importance and complexity for the fifth-generation (5G) beyond systems, as they feature more elements require increased overall performance. The full 3D patterns all array need to be characterized because are general different due construction inaccuracy, coupling, array's asymmetry, etc. effective aperture distribution function (EADF) can provide an analytic description based on a full-sphere measurement anechoic chamber. However, increases, denser spatial samples needed EADF large distance offsets from reference point chamber, leading prohibitive time EADF. In this paper, we present applied highlight issues caused by aperture. To overcome issues, enhanced proposed with low that intrinsically determined characteristic each element rather than validated using experimental measurements conducted at 27-30 GHz frequency band relatively planar array.