A communication device includes a lens having a defined shape. A feeder array comprising a plurality of antenna elements that are positioned in a specified proximal distance from the lens to receive a lens-guided beam of input radio frequency (RF) signals through the lens. The specified proximal distance is less than a focal length of the lens. The lens covers the feeder array as a radome enclosure. A distribution of a gain from the received lens-guided beam of input RF signals is substantially equalized from a radiation surplus region to a radiation deficient region of the feeder array to increase at least a reception sensitivity of the plurality of antenna elements for at least the lens-guided beam of input RF signals, based on the defined shape of the lens and the specified proximal distance of the feeder array to the lens.

This application provides implementations related to lenses. In one implementation, a lens comprises a substrate layer and a metal layer, wherein at least one surface of the substrate layer is a concave surface or a convex surface; the metal layer exists on the at least one surface of the substrate layer; the metal layer comprises a metal part and a hollow-out part, and the metal part or the hollow-out part is presented by using a graphics array; the graphics array comprises a plurality of first rings, the first ring comprises a plurality of graphic units, and a larger ring encircles a smaller ring in the plurality of first rings; and at least one of the following are different: size of graphic units comprised in two adjacent first rings, rotation angle of graphic units comprised in two adjacent first rings, or two adjacent first intervals, wherein the first interval is an interval between the two adjacent first rings.

This application provides implementations related to lenses. In one implementation, a lens comprises a substrate layer and a metal layer, wherein at least one surface of the substrate layer is a concave surface or a convex surface; the metal layer exists on the at least one surface of the substrate layer; the metal layer comprises a metal part and a hollow-out part, and the metal part or the hollow-out part is presented by using a graphics array; the graphics array comprises a plurality of first rings, the first ring comprises a plurality of graphic units, and a larger ring encircles a smaller ring in the plurality of first rings; and at least one of the following are different: size of graphic units comprised in two adjacent first rings, rotation angle of graphic units comprised in two adjacent first rings, or two adjacent first intervals, wherein the first interval is an interval between the two adjacent first rings.

The invention provides a mobile terminal, a glass housing, and a performance optimization method of an antenna module of the mobile terminal. The mobile terminal is internally provided with the antenna module. The glass housing includes a radiation zone facing the antenna module and a non-radiation zone adjacent to the radiation zone. The glass shape of the radiation zone and the glass shape of the non-radiation zone are of discontinuity. The glass housing of the mobile terminal provided by the invention can optimize performance of the antenna module.

The invention provides a mobile terminal, a glass housing, and a performance optimization method of an antenna module of the mobile terminal. The mobile terminal is internally provided with the antenna module. The glass housing includes a radiation zone facing the antenna module and a non-radiation zone adjacent to the radiation zone. The glass shape of the radiation zone and the glass shape of the non-radiation zone are of discontinuity. The glass housing of the mobile terminal provided by the invention can optimize performance of the antenna module.

The present disclosure discloses a foamed dielectric material, which is used to solve the problems of low production efficiency and high production cost of foamed dielectric materials at present. The foamed dielectric material is a cylinder structure or a tube structure formed by a foamed material after foaming; a plurality of gaps are cut on the surface of the cylinder structure or the tube structure, and the gap has a metal wire segment inside; and the metal wire segment in different gaps is not in contact with each other. The foamed dielectric material with such structure has the advantages such as a simple structure, an accurately controllable dielectric constant, light weight per unit volume, easy to efficiently product and stable technical index. The present disclosure further discloses a production method which may be used for producing the foamed dielectric material. In the production method, firstly a foamed rod-shaped part or a tubular part is passed through a slitting device, and passed through a buried wire device, and then truncated into a required length. The production method has the advantages such as high production efficiency, low cost, light weight and easy to control the dielectric characteristic.

A photonic nanojet antenna system includes a dielectric element having a circular cross section and formed of a single dielectric material, and at least one feed antenna. The circular cross section of the dielectric element has a diameter such that a photonic nanojet, that is a narrow high-intensity electromagnetic beam, propagates from the dielectric element and into the feed antenna when the dielectric element is illuminated with electromagnetic plane waves. The dielectric element can be, but is not limited to, a sphere, a truncated cylinder, or an ellipsoid.

A photonic nanojet antenna system includes a dielectric element having a circular cross section and formed of a single dielectric material, and at least one feed antenna. The circular cross section of the dielectric element has a diameter such that a photonic nanojet, that is a narrow high-intensity electromagnetic beam, propagates from the dielectric element and into the feed antenna when the dielectric element is illuminated with electromagnetic plane waves. The dielectric element can be, but is not limited to, a sphere, a truncated cylinder, or an ellipsoid.

A phase compensation lens antenna comprises: an antenna array comprising a plurality of antennas; and a planar lens disposed parallel to the antenna array, wherein the planar lens has unit cells disposed in a straight line pattern or an open curve pattern, and the unit cells can correct the phase of a radio wave radiated from the antenna array, based on the permittivity.

A phase compensation lens antenna comprises: an antenna array comprising a plurality of antennas; and a planar lens disposed parallel to the antenna array, wherein the planar lens has unit cells disposed in a straight line pattern or an open curve pattern, and the unit cells can correct the phase of a radio wave radiated from the antenna array, based on the permittivity.