Abstract: A wideband millimeter-wave antenna device includes an antenna radiation layer and a transparent metasurface layer. The antenna radiation layer is below a transparent panel of a display panel and maintains a spaced height from the transparent panel. The transparent metasurface layer is on an upper surface of the transparent panel. The antenna radiation layer includes a dielectric substrate, a radiating metal portion, and a ground plane. The dielectric substrate is below the transparent panel and includes a first surface and a second surface, and the first surface faces the transparent panel. The radiating metal portion is on the first surface. The ground plane is on the second surface. The transparent metasurface layer includes a transparent substrate and metasurface units. The transparent substrate is on the upper surface of the transparent panel. The metasurface units are on the transparent substrate. Each metasurface unit is formed by a diamond-grid metal wire.

Abstract: A loop-like dual-antenna system is provided. The loop-like dual-antenna system includes a dielectric substrate having a first surface and a second surface opposite to each other. The loop radiating element includes a first radiating part with two ends and a second radiating part opposite to the first radiating part. A first signal source is disposed on the first surface of the dielectric substrate and electrically connected to two ends of the first radiating part. A grounding part is disposed on the second surface of the dielectric substrate and disposed on one side of the dielectric substrate away from the first signal source. A coupling matching element is disposed on the second surface of the dielectric substrate and adjacent to the grounding part, for coupling to and exciting the second radiating part. A second signal source, disposed on the second surface of the dielectric substrate, and electrically connected to the coupling matching element and the grounding part.

Abstract: The disclosure provides a single antenna system comprising a ground element, a feeding metal part, at least one shorting metal part, a radiating metal part, a decoupling circuit, a first feed source, and a second feed source. The single antenna system with an integrated decoupled circuit not only effectively achieves size reduction, but achieve high antenna isolation. Moreover, the single antenna system is applied for narrow-bezel notebooks and small-size antenna systems in future.

Abstract: A multi-antenna system includes a conductive plane with four adjacent sides, a main antenna unit disposed on any one of the four sides, a first secondary antenna unit disposed on any one of the four side, a second secondary antenna unit disposed on any one of the four sides of the conductive plane except the side on which the main antenna unit is disposed, a switching circuit disposed on the conductive plane and is selectively electrically connected to the first secondary antenna unit or the second secondary antenna unit and a wireless communications module disposed on the conductive plane and electrically connected to the switching circuit and the main antenna unit. The first secondary antenna unit is spaced apart from the main antenna unit by a spacing, where the spacing is greater than 0.5 times a wavelength distance of a low-frequency operating frequency of the multi-antenna system.

Abstract: A loop-like dual-antenna system is provided. The loop-like dual-antenna system includes a dielectric substrate having a first surface and a second surface opposite to each other. The loop radiating element includes a first radiating part with two ends and a second radiating part opposite to the first radiating part. A first signal source is disposed on the first surface of the dielectric substrate and electrically connected to two ends of the first radiating part. A grounding part is disposed on the second surface of the dielectric substrate and disposed on one side of the dielectric substrate away from the first signal source. A coupling matching element is disposed on the second surface of the dielectric substrate and adjacent to the grounding part, for coupling to and exciting the second radiating part. A second signal source, disposed on the second surface of the dielectric substrate, and electrically connected to the coupling matching element and the grounding part.

Abstract: The disclosure provides a single antenna system comprising a ground element, a feeding metal part, at least one shorting metal part, a radiating metal part, a decoupling circuit, a first feed source, and a second feed source. The single antenna system with an integrated decoupled circuit not only effectively achieves size reduction, but achieve high antenna isolation. Moreover, the single antenna system is applied for narrow-bezel notebooks and small-size antenna systems in future.

Abstract: The present disclosure provides a loop antenna, including a substrate, and a grounding portion, a radiating portion, a matching portion, and a feeding portion that are located on the substrate. The grounding portion includes a first grounding segment and a second grounding segment. The second grounding segment is perpendicular to the first grounding segment, and a first end of the second grounding segment is connected to a first end of the first grounding segment. The radiating portion includes a first radiating segment and a second radiating segment. The first radiating segment is connected to a second end of the first grounding segment and extending from the first grounding segment towards a direction away from the first grounding segment. The second radiating segment is connected to the first radiating segment and extending from the first radiating segment towards a direction facing the second grounding segment.

Abstract: This disclosure provides a loop antenna, including a substrate, and a grounding portion, a matching portion, a first radiating portion, a second radiating portion, and a feed portion that are located on the substrate. The first radiating portion includes a first radiating segment and a second radiating segment. The grounding portion includes a first grounding segment and a second grounding segment. The second grounding segment is perpendicularly connected to a first end of the first grounding segment. The matching portion is connected to a second end of the first grounding segment and the first radiating segment. The first radiating segment extends from the matching portion away from the first grounding segment. The second radiating segment extends from the first radiating segment toward the second grounding segment. There is a coupling gap between the second radiating portion and the second radiating segment, and the second radiating portion extends toward the second grounding segment.

Abstract: The disclosure provides an antenna element. The antenna element comprises a metal substrate, a first closed slot, a feed part and a first matching part. The first closed slot is formed in the metal substrate, and comprises a first slot section and a second slot section, wherein the length of the first slot section is greater than the length of the second slot section. The feed part spans across the closed slot, the closed slot is divided into the first slot section and the second slot section by the feed part, the feed part is used for exciting the first slot section to generate a resonant mode in a first frequency band and generate a resonant mode in a second frequency band, and exciting the second slot section to generate a resonant mode in a third frequency band. The first matching part is formed on the first slot section, and is connected to parts of the metal substrate, which are positioned on two sides of the first slot section.

Abstract: A multi-antenna system includes a conductive plane with four adjacent sides, a main antenna unit disposed on any one of the four sides, a first secondary antenna unit disposed on any one of the four side, a second secondary antenna unit disposed on any one of the four sides of the conductive plane except the side on which the main antenna unit is disposed, a switching circuit disposed on the conductive plane and is selectively electrically connected to the first secondary antenna unit or the second secondary antenna unit and a wireless communications module disposed on the conductive plane and electrically connected to the switching circuit and the main antenna unit. The first secondary antenna unit is spaced apart from the main antenna unit by a spacing, where the spacing is greater than 0.5 times a wavelength distance of a low-frequency operating frequency of the multi-antenna system.

Abstract: A monopole antenna is provided. The monopole antenna comprises a ground element, a radiating element, a first inductive element and a second inductive element. The radiating element includes a feed point and the feed point divides the radiating element into the first radiating portion and the second radiating portion. The second radiating portion is connected with the first radiating portion. The first radiating portion and the second radiating portion support a first frequency band and a second frequency band, respectively. The operating frequency of the first frequency band is higher than that of the second frequency band. The first inductive element is connected between the first radiating portion and the ground element. The second inductive element is connected between the second radiating portion and the ground element.

Abstract: A wireless communication device is provided. The wireless communication device comprises a circuit board and a loop antenna. The circuit board includes a wireless communication circuit. The wireless communication circuit includes a signal transmitting end and a ground terminal. The loop antenna includes a conductive loop, a feed portion, a first short-circuit portion and a second short-circuit portion. The feed portion is connected between the conductive loop and the signal transmitting end. The first short-circuit portion and the second short-circuit portion are connected between the conductive loop and the ground terminal, respectively.

Abstract: An antenna is provided. The antenna includes: an antenna ground plane; a radiating unit parallel to the antenna ground plane, the radiating unit including: a common unit; a first branch extended from the common unit along a first direction; a second branch extended from the common unit along a second direction, wherein the first direction and the second direction are inverse; a third branch separated from the first branch and the second branch and extending outwardly from the common unit; a shorting unit located between a plane of radiating unit located and a plane of the antenna ground plane and connected to the common unit and the antenna ground plane; and a feeding unit located between a plane of the radiating unit and a plane of the antenna ground plane, wherein the feeding unit is separated from the shorting unit and connected to the third branch, and the shorting unit and the feeding unit are located on the same side.

Abstract: The present disclosure provides a loop antenna, including a substrate, and a grounding portion, a radiating portion, a matching portion, and a feeding portion that are located on the substrate. The grounding portion includes a first grounding segment and a second grounding segment. The second grounding segment is perpendicular to the first grounding segment, and a first end of the second grounding segment is connected to a first end of the first grounding segment. The radiating portion includes a first radiating segment and a second radiating segment. The first radiating segment is connected to a second end of the first grounding segment and extending from the first grounding segment towards a direction away from the first grounding segment. The second radiating segment is connected to the first radiating segment and extending from the first radiating segment towards a direction facing the second grounding segment.

Abstract: This disclosure provides a loop antenna, including a substrate, and a grounding portion, a matching portion, a first radiating portion, a second radiating portion, and a feed portion that are located on the substrate. The first radiating portion includes a first radiating segment and a second radiating segment. The grounding portion includes a first grounding segment and a second grounding segment. The second grounding segment is perpendicularly connected to a first end of the first grounding segment. The matching portion is connected to a second end of the first grounding segment and the first radiating segment. The first radiating segment extends from the matching portion away from the first grounding segment. The second radiating segment extends from the first radiating segment toward the second grounding segment. There is a coupling gap between the second radiating portion and the second radiating segment, and the second radiating portion extends toward the second grounding segment.

Abstract: A wearable electronic device includes a device body, a wearable body, a circuit board, an antenna system and a conductive extension portion. The device body includes an upper casing and a lower casing. A feeding portion, a first grounding portion and a second grounding portion are disposed on a periphery of the circuit board. The second grounding portion is electrically connected to the upper casing. The antenna system is disposed on the inner surface of the lower casing. The feeding terminal of the antenna system is electrically connected to the feeding portion of the circuit board. The grounding terminal of the antenna system is electrically connected to the first grounding portion of the circuit board. An end of the conductive extension portion is electrically connected to the upper casing, the other end of the conductive extension portion is extended into the wearable body.

Abstract: A monopole antenna is provided. The monopole antenna comprises a ground element, a radiating element, a first inductive element and a second inductive element. The radiating element includes a feed point and the feed point divides the radiating element into the first radiating portion and the second radiating portion. The second radiating portion is connected with the first radiating portion. The first radiating portion and the second radiating portion support a first frequency band and a second frequency band, respectively. The operating frequency of the first frequency band is higher than that of the second frequency band. The first inductive element is connected between the first radiating portion and the ground element. The second inductive element is connected between the second radiating portion and the ground element.

Abstract: The disclosure provides an antenna element. The antenna element comprises a metal substrate, a first closed slot, a feed part and a first matching part. The first closed slot is formed in the metal substrate, and comprises a first slot section and a second slot section, wherein the length of the first slot section is greater than the length of the second slot section. The feed part spans across the closed slot, the closed slot is divided into the first slot section and the second slot section by the feed part, the feed part is used for exciting the first slot section to generate a resonant mode in a first frequency band and generate a resonant mode in a second frequency band, and exciting the second slot section to generate a resonant mode in a third frequency band. The first matching part is formed on the first slot section, and is connected to parts of the metal substrate, which are positioned on two sides of the first slot section.

Abstract: A wearable electronic device includes a device body, a wearable body, a circuit board, an antenna system and a conductive extension portion. The device body includes an upper casing and a lower casing. A feeding portion, a first grounding portion and a second grounding portion are disposed on a periphery of the circuit board. The second grounding portion is electrically connected to the upper casing. The antenna system is disposed on the inner surface of the lower casing. The feeding terminal of the antenna system is electrically connected to the feeding portion of the circuit board. The grounding terminal of the antenna system is electrically connected to the first grounding portion of the circuit board. An end of the conductive extension portion is electrically connected to the upper casing, the other end of the conductive extension portion is extended into the wearable body.

Abstract: A wireless communication device is provided. The wireless communication device comprises a circuit board and a loop antenna. The circuit board includes a wireless communication circuit. The wireless communication circuit includes a signal transmitting end and a ground terminal. The loop antenna includes a conductive loop, a feed portion, a first short-circuit portion and a second short-circuit portion. The feed portion is connected between the conductive loop and the signal transmitting end. The first short-circuit portion and the second short-circuit portion are connected between the conductive loop and the ground terminal, respectively.