Antenna device which is suitable for wireless communications according to a 5G network standard, wherein the antenna device comprises, or consists of: i) a primary layer having a top side and a bottom side, the primary layer comprising a multitude of adjacent antenna units wherein each antenna unit has a respective electrically conductive antenna plate which is present at the top side of the primary layer, and ii) a dielectric resonator body which comprises, or consists of, a resonator base layer having a top side and a bottom side, which top side is provided with a multitude of adjacent resonator units, wherein the resonator base layer and the resonator units are made of dielectric material, wherein the bottom side of the dielectric resonator body is provided on the top side of the primary layer, and wherein above the antenna plate of each antenna unit a corresponding resonator unit is present. Method for use in wireless communications according to a 5G network standard, comprising the step of connecting a communication circuit to an antenna device.