A printed circuit board and a terminal are provided. The printed circuit board includes a feedpoint arrangement region, a ground point arrangement region, and a ground region. The ground region is adjacent to and connected to the ground point arrangement region and is configured to be a ground plate of the antenna. A radiation reduction structure is arranged in the ground region and defines an opening. Therefore, an edge of the printed circuit board is disrupted by the opening.

An antenna feed for a stackable antenna system includes a polarization converter that continuously surrounds an omnidirectional antenna. Electromagnetic radiation emitted by the omnidirectional antenna and having an initial polarization passes through the first polarization converter, which converts the initial polarization into a non-vertical linear polarization. A feedline located outside of the first polarization converter forms a helix that wraps around the first polarization converter such that it runs perpendicularly to the non-vertical linear polarization. When the width of the feedline is sufficiently small, electrons in metal of the feedline will not be excited by the radiation, and the radiation will transmit through the feedline with minimal impact on the omnidirectional antenna's gain profile. The feedline may be used to feed a second antenna located vertically above the omnidirectional antenna. When the first polarization converter outputs horizontally polarized radiation, the feedline may form a straight vertical line.

An antenna feed for a stackable antenna system includes a polarization converter that continuously surrounds an omnidirectional antenna. Electromagnetic radiation emitted by the omnidirectional antenna and having an initial polarization passes through the first polarization converter, which converts the initial polarization into a non-vertical linear polarization. A feedline located outside of the first polarization converter forms a helix that wraps around the first polarization converter such that it runs perpendicularly to the non-vertical linear polarization. When the width of the feedline is sufficiently small, electrons in metal of the feedline will not be excited by the radiation, and the radiation will transmit through the feedline with minimal impact on the omnidirectional antenna's gain profile. The feedline may be used to feed a second antenna located vertically above the omnidirectional antenna. When the first polarization converter outputs horizontally polarized radiation, the feedline may form a straight vertical line.

An electronic device is provided. The electronic device includes a housing and a connection part. The housing includes a first housing portion that includes a first side face, and a second housing portion that includes a second side face. The connection part connects the first housing portion and the second housing portion. A first conductive member extends along at least a portion of the first side face, a first non-conductive member is disposed on the first side face, a second conductive member extends along at least a portion of the second side face, a second non-conductive member is disposed on the second side face, and when the second housing portion faces the first housing portion, the first non-conductive member and the second non-conductive member are substantially aligned.

An electronic device is provided. The electronic device includes a housing and a connection part. The housing includes a first housing portion that includes a first side face, and a second housing portion that includes a second side face. The connection part connects the first housing portion and the second housing portion. A first conductive member extends along at least a portion of the first side face, a first non-conductive member is disposed on the first side face, a second conductive member extends along at least a portion of the second side face, a second non-conductive member is disposed on the second side face, and when the second housing portion faces the first housing portion, the first non-conductive member and the second non-conductive member are substantially aligned.

An eyewear device that includes a lens; a support structure adapted to be worn on the head of a user, the support structure including a rim configured to support the lens in a viewing area visible to the user when wearing the support structure; an antenna embedded into or forming part of the support structure, the antenna at least partially extending into the rim; a transceiver adapter to send and receive signals; and a tuner coupled between the transceiver and the antenna, the tuner adapted to match impedance between the antenna and the transceiver to improve power transfer.

An eyewear device that includes a lens; a support structure adapted to be worn on the head of a user, the support structure including a rim configured to support the lens in a viewing area visible to the user when wearing the support structure; an antenna embedded into or forming part of the support structure, the antenna at least partially extending into the rim; a transceiver adapter to send and receive signals; and a tuner coupled between the transceiver and the antenna, the tuner adapted to match impedance between the antenna and the transceiver to improve power transfer.

There is disclosed an antenna arrangement for a portable electronic device, comprising: a ground plane having an edge; and arranged along the edge, in sequence, a feed section, a grounded coupling section, and an extended coupling section. The feed section comprises an RF feed on the ground plane and a feed line extending from the RF feed having a first portion extending substantially perpendicularly from the edge of the ground plane, and a second portion extending from an end of the first portion, substantially parallel to the edge of the ground plane, in a direction away from the grounded coupling section. The grounded coupling section comprises a first conductive element extending substantially parallel to the edge of the ground plane and arranged to overlap or run adjacent to at least a part of the second portion of the feed line of the feed section, and a conductive member to connect the first conductive element to the ground plane. The extended coupling section comprises a conductive meander line extending generally parallel to the edge of the ground plane, one end of the conductive meander line being connected to or configured to couple with a portion of the grounded coupling section, the other end of the conductive meander line being connected to a second conductive element extending substantially parallel to the edge of the ground plane.

An antenna device includes a first antenna having a length corresponding to a first frequency, and arranged along a ground, a second antenna formed by a slot penetrating metal constituting the first antenna, and having a slot length corresponding to a second frequency higher than the first frequency, a first feeder wire for the first frequency, connected from the ground to the first antenna, a metal element for electromagnetic field coupling, arranged in a non-contact state relative to the second antenna, between the slot and the ground; and a second feeder wire for the second frequency, connected from the ground to the metal element.

An antenna device according to an embodiment of the present invention includes a dielectric layer, a first radiator disposed on the dielectric layer in a first direction, a second radiator formed in a shape different from that of the first radiator and disposed on the dielectric layer in a second direction, a first transmission line which extends in the first direction to be connected to the first radiator, and a second transmission line which extends in the second direction to be connected to the second radiator, and intersects the first transmission line with being physically or electrically spaced apart therefrom.