Implementations for heat structure for thermal mitigation are described. The described heat structures, for instance, provide a multi-layered structure that optimizes heat spreading and dissipation, as well as wireless performance of wireless devices. A heat structure, for instance, is installed internally in a wireless device adjacent various internal components to absorb heat generated by the components, and to dissipate the heat. According to various implementations, a heat structure is implemented as a thermally conductive layer surrounded by layers of electrically conductive material. Electrically conductive vias can be formed that traverse the thermally conductive layer and form an electrical connection between different electrically conductive layers to mitigate current flow in the thermally conductive layer.

Embodiments of the present disclosure provide methods, apparatuses, devices and systems related to the implementation of a multi-layer printed circuit board (PCB) radio-frequency antenna featuring, a printed radiating element coupled to an absorbing element embedded in the PCB. The embedded element is configured within the PCB layers to prevent out-of-phase reflections to the bore-sight direction.

An antenna device for vehicle that is attached to a vehicle, the antenna device for vehicle including: a resin base; a metal base arranged on the resin base; a metal plate whose portion is attached to the metal base so as to be superimposed on a portion of the metal base; a substrate arranged on the metal base; an antenna connected to the substrate; and a fixing portion which fixes the metal base and the substrate, wherein the fixing portion is positioned at a top-view superimposed area of the metal base and the metal plate.

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.

An antenna device for vehicle that is attached to a roof of a vehicle, the antenna device for vehicle including: an antenna base; an antenna case covering the antenna base from above; and an antenna element provided inside the antenna case, wherein the antenna base has a metal base fixed to the roof, and a metal plate electrically connected to the metal base.

An electronic apparatus includes a storage chassis, an electronic component, an antenna circuit, and a proximity sensor circuit. A pair of main faces facing each other in the thickness direction and end faces of the storage chassis define a storage space. The electronic component is disposed in the storage space. The antenna circuit is disposed in the storage space so that at least a part of the antenna circuit overlaps the electronic component when viewed in the thickness direction. The proximity sensor circuit is connected to the antenna circuit, and detects proximity of an object based on a physical quantity that changes according to proximity of the object. The antenna circuit includes a substrate, an antenna element, and an antenna ground. The proximity sensor circuit is located in an end space defined between the electronic component and the end face.

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.

This document describes techniques and systems to generate a point-source model for simulating near-field effects from structures of an antenna. The techniques and systems generate, based on near-field values extracted from electromagnetic simulations, respective far-field radiation patterns for active elements and, in some cases, passive elements of the antenna array. The far-field radiation patterns account for electromagnetic interactions between the active elements and an antenna structure, which can include passive elements of the antenna array. The techniques and systems output the far-field radiation patterns, which are effective to simulate, using an asymptotic numerical method, electromagnetic interactions between the antenna array and at least one interaction structure. Using the described point-source model, engineers can quickly and accurately simulate electromagnetic interactions between the antenna array and the interaction structure for various configurations and applications of the antenna array.

An antenna assembly and an electronic device are provided. The antenna assembly comprises a dielectric substrate; an antenna unit, arranged on a surface of the dielectric substrate; a radio frequency chip, arranged on a surface of the dielectric substrate, and connected with the antenna unit; and a metal shielding cover, arranged on another surface of the dielectric substrate facing away from the antenna unit, and coving the antenna unit. The electromagnetic interference to antenna unit caused by other electronic devices of electronic equipment can be isolated through the metal shielding cover, and the antenna unit and the radio frequency chip of the antenna assembly can be arranged on the same dielectric substrate, avoiding the use of a coaxial cable to connect the antenna unit and the radio frequency chip, thereby solving the problem of electromagnetic interference to and ensuring the radiation performance of the antenna unit.

An antenna module includes: a wiring structure including a plurality of insulating layers and a plurality of wiring layers; a metal structure disposed on one surface of the wiring structure, and having a through-portion; and an antenna disposed on the one surface of the wiring structure. At least a portion of the antenna is disposed in the through-portion.