A communication device is made with a metallic frame having an interior mounting surface for receiving one or more functional components. The metallic frame includes a first frame member having a first portion extending uninterrupted across one lateral side of the metallic frame. The first portion provides structural support to the communication device. A T-shaped slot antenna is formed in a second portion of the first frame member adjacent to the first portion. The T-shaped slot antenna has first and second arms separated at a gap and partially encompassing a slot. The second portion of the first frame member enables radio frequency communication by at least one of the functional components via the T-shaped slot antenna of the communication device.

An antenna assembly includes a ground plane, a radiator, and a resonant circuit. The ground plane has a slot with an open end. The radiator spans the slot and has a shape configured to radiate electromagnetic energy at a first frequency and at a second frequency. The resonant circuit spans the slot in parallel with the radiator and is positioned nearer the open end than an opposite end of the slot.

An antenna structure is provided, which includes a substrate, an antenna unit and a metal ground. The substrate includes a first surface and a second surface; the antenna unit disposed on the first surface includes a radiation part, a feeding part and a feeding line, where the feeding line includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, and the first transmission line is connected to the radiation part via the feeding part; and the metal ground disposed on the second surface has an edge which is perpendicular to projection of the radiation part to the metal ground; and a resonance slot is disposed on the metal ground, and its position corresponds between projection of the second transmission line to the metal ground and the edge.

An antenna structure is provided, which includes a substrate, an antenna unit and a metal ground. The substrate includes a first surface and a second surface; the antenna unit disposed on the first surface includes a radiation part, a feeding part and a feeding line, where the feeding line includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, and the first transmission line is connected to the radiation part via the feeding part; and the metal ground disposed on the second surface has an edge which is perpendicular to projection of the radiation part to the metal ground; and a resonance slot is disposed on the metal ground, and its position corresponds between projection of the second transmission line to the metal ground and the edge.

A glazing includes a frame made of a metallic first frame element, a metallic second frame element, and a polymeric third frame element connecting the frame elements at least in some sections, a glazing unit arranged in the frame, and a RFID transponder having a dipole antenna or a slot antenna and an operating frequency f, wherein the frame surrounds the end faces of the glazing unit and, at the same time, covers the RFID transponder in the viewing direction through the glazing unit, a distance D between the center of the dipole antenna or the center of the slot antenna and the nearest adjacent corner of the glazing unit is from 40% to 100% of a vacuum wavelength lambda corresponding to the operating frequency f, and the RFID transponder is arranged on an interior-side surface of the frame.

A glazing includes a frame made of a metallic first frame element, a metallic second frame element, and a polymeric third frame element connecting the frame elements at least in some sections, a glazing unit arranged in the frame, and a RFID transponder having a dipole antenna or a slot antenna and an operating frequency f, wherein the frame surrounds the end faces of the glazing unit and, at the same time, covers the RFID transponder in the viewing direction through the glazing unit, a distance D between the center of the dipole antenna or the center of the slot antenna and the nearest adjacent corner of the glazing unit is from 40% to 100% of a vacuum wavelength lambda corresponding to the operating frequency f, and the RFID transponder is arranged on an interior-side surface of the frame.

An electronic device housing may be formed from housing members. A first housing member may form a display cover layer that overlaps pixels. During operation, the pixels may display an image that is viewable through the display cover layer. The second housing member may have a rear wall portion and a sidewall. A band may be coupled to the sidewall or other portion of the second housing member. The first and second housing members may be attached together using a housing member attachment structure. The housing member attachment structure may have layers of adhesive and printed circuit structures. The printed circuit structures may include metal traces that form an antenna and that form capacitive force sensor electrodes on opposing sides of a compressible member.

This document describes techniques, apparatuses, and systems directed to a waveguide end array antenna to reduce grating lobes and cross-polarization. Referred to simply as the waveguide, for short, utilizes a core made of a dielectric material to guide electromagnetic energy from a waveguide input to one or more radiating slots. The dielectric core includes a main channel and one or more forks. Each fork connects the main channel to one or more tine sections, and each tine section is terminated by a closed end and a radiating slot. These radiating slots are separated from each other by a distance to enable at least a portion of the electromagnetic energy to dissipate in phase through the radiating slots. The dielectric core of the waveguide reduces grating lobes and cross-polarization associated with the electromagnetic energy. An automobile can rely on the waveguide to detect objects with increased accuracy.

This document describes techniques, apparatuses, and systems directed to a waveguide end array antenna to reduce grating lobes and cross-polarization. Referred to simply as the waveguide, for short, utilizes a core made of a dielectric material to guide electromagnetic energy from a waveguide input to one or more radiating slots. The dielectric core includes a main channel and one or more forks. Each fork connects the main channel to one or more tine sections, and each tine section is terminated by a closed end and a radiating slot. These radiating slots are separated from each other by a distance to enable at least a portion of the electromagnetic energy to dissipate in phase through the radiating slots. The dielectric core of the waveguide reduces grating lobes and cross-polarization associated with the electromagnetic energy. An automobile can rely on the waveguide to detect objects with increased accuracy.

An antenna assembly for a mobile communication device includes two antennas. The two antennas are disposed in a cavity defined in a side frame member of the mobile communication device. The two antennas are disposed adjacent with a gap in between. An antenna feed point is disposed in connection with each antenna. One antenna element of each antenna is disposed on a surface of side frame member surrounding the cavity.