This document describes techniques, apparatuses, and systems for a waveguide with lobe suppression. A waveguide is described that includes a pipe for containing a dielectric, the pipe defining an open end to a longitudinal direction through the pipe. An array of radiating slots is formed through a surface of the pipe and in communication with the dielectric. To suppress grating lobes in an antenna pattern, the waveguide includes at least one parasitic groove that is separate from the pipe and with at least a portion of a length that is parallel to the array of radiating slots. In this way, the waveguide provides an antenna pattern where grating lobes are suppressed or substantially reduced.

An antenna is disposed, as a part of a conductor, on a substrate. The antenna includes a main plate providing a ground potential; and a patch portion arranged to face the main plate in Z direction. The substrate has a no-arrange region in which no conductor is arranged as a region between a periphery and the main plate in a plan view. A metal support portion of a case is in contact with the no-arrange region on a bottom surface of the substrate. The metal member is in contact with the no-arrange region on a top surface or on a bottom surface opposite to the top surface in the plate thickness direction of the substrate.

A communications device is provided, including a metal carrier having a mounting plane with at least one mounting area, and further includes an antenna element disposed in each mounting area. The mounting area is where the mounting plane intersects a circle centered at a feedpoint of the antenna element in the area and whose radius does not exceed a specified radius. When a boundary line of the mounting area includes a boundary line, a distance from the feedpoint to the boundary line is less than or equal to a specified distance; and/or when a boundary line of the mounting area includes a vertex of the mounting plane, a distance from the feedpoint to the vertex is less than or equal to a specified distance. A feed position on the antenna element is designed to obtain relatively good antenna roundness performance and enhance an antenna signal coverage effect.

A communication technique and a system thereof that fuse a 5.sup.th generation (5G) communication system for supporting a higher data transmission rate in a beyond 4.sup.th generation (4G) system to internet of things (IoT) technology are provided. The communication technique and a system thereof may be applied to an intelligent service (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service) based on 5G communication technology and IoT related technology. Further, a beamforming antenna assembly including a metal structure and particularly, a beamforming antenna assembly that can minimize a communication distortion of a beamforming antenna due to an influence of a metal is provided.

A conformal array antenna includes a substrate and a conductive circuit. The substrate has a non-conductive roughened curved surface formed with a plurality of hook-shaped structures that are formed by blasting a plurality of particles on the substrate. The non-conductive roughened curved surface defines a plurality of spaced-apart antenna pattern regions. The conductive circuit is located in the antenna pattern regions, and includes an activation layer formed on the roughened curved surface and containing an active metal, and a first metal layer formed on the activation layer.

An antenna system comprising: a ground plane; an antenna radiator separated from and overlapping the ground plane; at least one feed element configured to provide a radio-frequency feed for the antenna radiator; and at least one resonator coupled to the feed element and positioned in a space between the ground plane and the antenna radiator, wherein the antenna radiator is a broadband antenna radiator having a first operational range of frequencies and the resonator is a narrow band resonator having a second range of resonant frequencies that at least partially lie within the first operational range of frequencies.

A reflection reducing apparatus includes a dielectric base plane (30), a first patch group, a second patch group, and a ground plate (40). A plurality of first conductive patches (10) each resonate in a first direction (α) and a second direction (β) which are different in resonant length from each other. A plurality of second conductive patches include a first direction-oriented patch (20a) and a second direction-oriented patch (20b) which are different in resonant length from each other. The second conductive patches are arranged along an outer periphery of the first patch group at an interval away from the first patch group.

A mobile computing device includes: a display; a device housing supporting the display and having a wall defining an exterior surface; a communications controller supported within a device interior enclosed between the display and the device housing; a cleat affixed to the exterior surface of the wall and configured to couple an accessory to the device housing, the cleat including a conductive antenna element; and a feed connector having an exterior end electrically coupled with the conductive antenna element of the cleat, an interior end electrically coupled with the communications controller, and a body traversing the wall to join the exterior and interior ends.

A wearable device, such as an earphone, may include a conformal antenna that is resilient to performance degradation due to user-interactions and manufacturing process variances. The antenna may comprise one or more surfaces suitable for receiving and transmitting electromagnetic signals, wherein the one or more surfaces of the antenna may be non-parallel with a ground plane and a user-interactable surface, thereby minimizing image current cancellation and coupling between the antenna and a user finger during user interactions with the user-interactable surface.

An antenna configured to receive radiation at global navigation satellite system (GNSS) frequencies includes a substrate, a frontside patch arranged on a front side of the substrate, and a metamaterial ground plane. The metamaterial ground plane includes a plurality of backside patches and a cavity. The plurality of backside patches include a center backside patch surrounded in a radial direction by a plurality of intermediate backside patches. The center backside patch and the plurality of intermediate backside patches are arranged in a pattern that provides circular symmetry with respect to a center of the antenna. The cavity is coupled to the substrate, and the plurality of intermediate backside patches are electrically isolated from the cavity.