Design Aspects of 3D Printing for Gradient Index Lenses

Various aspects of implementing a gradient refractive index distribution using 3D printing are considered. These approaches are applied to two types of lens design: cylindrical Luneburg lens and thick flat lens. Based on simulated and measured results the main constraints for the lens design using additive manufacturing are defined. The novelty of the work consists of the study of the influence of different approaches to the implementation of lenses using additive technologies on the characteristics of the antenna. The approaches for a lens measured as a Luneburg lens and a thick flat lens are compared.