A barcode reader configured to be supported by a workstation and having a housing with a window. A multi-axis radio-frequency identification antenna assembly is positioned within the housing of the barcode reader and includes first, second, and third antennas. The first antenna is configured to emit a radiation pattern oriented in a first direction, the second antenna is configured to emit a radiation pattern oriented in a second direction, substantially orthogonal to the first direction, and the third antenna is configured to emit a radiation pattern oriented in a third direction, substantially orthogonal to the first direction and the second direction.

An electronic device comprises a housing, a frame, a location determining element, and a first antenna. The housing includes an internal cavity, a lower wall configured to contact a wearer's wrist, and a first side wall coupled to the lower wall. The first side wall includes an inner surface. The frame has a second side wall which includes an outer surface. The frame is positioned within the housing such that the internal cavity is formed partly by the lower wall and the second side wall. The location determining element is configured to determine a current geolocation of the electronic device based on a location signal. The first antenna is configured to receive the location signal. The first antenna is positioned between the inner surface of the first side wall and the outer surface of the second side wall and extends along a first portion of the perimeter of the frame.

An antenna structure includes a metal mechanism element, a dielectric substrate, a feeding radiation element, and a coupling radiation element. The metal mechanism element has a slot. The slot has a first closed end and a second closed end. The dielectric substrate has a first surface and a second surface which are opposite to each other. The feeding radiation element is coupled to a signal source, and is disposed on the second surface of the dielectric substrate. The feeding radiation element has a first vertical projection on the metal mechanism element. The coupling radiation element is coupled to a ground voltage, and is disposed on the first surface of the dielectric substrate. The coupling radiation element has a second vertical projection on the metal mechanism element. The second vertical projection of the coupling radiation element at least partially overlaps the first vertical projection of the feeding radiation element.

An antenna structure includes a metal frame. The metal frame includes a first surface, a second surface, and a third surface. The third surface is located between the first surface and the second surface. The metal frame includes at least one antenna. The at least one antenna includes a first gap, a second gap, and a feed portion. The first gap is disposed between the first surface and the second surface. The second gap is disposed in the third surface. The feed portion is mounted on the first surface and spans the first gap. When the feed portion supplies an electric current, the electric current is coupled to the first gap and the second gap.

An antenna structure includes a metal frame. The metal frame includes a first surface, a second surface, and a third surface. The third surface is located between the first surface and the second surface. The metal frame includes at least one antenna. The at least one antenna includes a first gap, a second gap, and a feed portion. The first gap is disposed between the first surface and the second surface. The second gap is disposed in the third surface. The feed portion is mounted on the first surface and spans the first gap. When the feed portion supplies an electric current, the electric current is coupled to the first gap and the second gap.

A radio frequency coupling structure comprising (1) a substrate that forms a top side of a waveguide, (2) a first conductive layer disposed on a bottom side of the substrate, (3) a second conductive layer incorporated within the substrate, (4) a through via that is communicatively coupled to the first conductive layer and extends through an opening in the second conductive layer toward a top side of the substrate, and/or (5) a ring slot formed around the through via in the first conductive layer. Various other apparatuses, systems, and methods are also disclosed.

A radio frequency coupling structure comprising (1) a substrate that forms a top side of a waveguide, (2) a first conductive layer disposed on a bottom side of the substrate, (3) a second conductive layer incorporated within the substrate, (4) a through via that is communicatively coupled to the first conductive layer and extends through an opening in the second conductive layer toward a top side of the substrate, and/or (5) a ring slot formed around the through via in the first conductive layer. Various other apparatuses, systems, and methods are also disclosed.

A monolithic antenna structure, comprising: a first metal layer; a second metal layer; a third metal layer arranged as a ground plane; a first dielectric layer between the first metal layer and the second metal layer; a second dielectric layer between the second metal layer and the third metal layer; a via feeding a signal for transmission by the antenna structure through the second dielectric layer to the second metal layer; wherein the first metal layer and the second metal layer are not electrically connected; and wherein the first metal layer acts primarily as the radiating element of the monolithic antenna structure.

A 3-D printable dual-polarized Vivaldi array may include a plurality of Vivaldi antennas having a 3-D printed modular construction that meets direct metal laser sintering fabrication design rules; a plurality of Sub-Miniature Push-on, Micro (SMPM) connectors forming a plurality of ground plane skirts supporting a lattice, each SMPM Connector having a detent. The 3-D printable dual-polarized Vivaldi array may further include a support structure between the lattice and the ground plane skirt; the ground plane skirt having a skirt swept forward angle of 40 to 60 degrees.

Disclosed is a radar antenna which has a shielding space corresponding to each antenna of an antenna body by using an accommodation hole of a shielding member to prevent mutual coupling between antennas. The disclosed radar antenna comprises an antenna body which has a first surface and a second surface and in which a plurality first slot groups are formed to be spaced apart from each other on the first surface, and a shielding member which is stacked on the first surface of the antenna body and in which a plurality of accommodation holes are formed to respectively overlap the plurality of first slot groups.