Manufacturing of 3D-metallic electromagnetic metamaterials for feedhorns used in radioastronomy and satellite communications

Publication date: Available online 2 October 2019Source: Mechanics of MaterialsAuthor(s): Javier De Miguel-Hernández, Roger J. Hoyland, Darío Sosa-Cabrera, Sebastiaan Deviaene, Pablo A. Fuerte-Rodríguez, Eduardo D. González-Carretero, Afrodisio Vega-MorenoAbstractThe electromagnetic metamaterials at microwaves frequencies are well established in industrial applications nowadays. Recent research has shown that a specific kind of metallic metamaterial can contribute to improve the performance of the microwave feedhorns used in radioastronomy and satellite telecommunications. In this article, we theoretically justify this argument finding a new type of meta-ring with a record bandwidth in terms of cross-polarization, and we explore the manufacturability of these particular metamaterials, successfully fabricating a meta-ring and applying it to a novel and very compact prototype microwave antenna which covers a 2:1 bandwidth.
Source: Mechanics of Materials - Category: Materials Science Source Type: research