Abstract: Provided is a multi-input multi-output antenna structure configured on a substrate, and the multi-input multi-output antenna structure includes two dipole antennas and two second grounded radiators. Each dipole antenna is used for resonating a first frequency band and a second frequency band. Each dipole antenna includes a feed-in radiator and a first grounded radiator. The feed-in radiator has a feed-in end. The first grounded radiator is disposed beside the feed-in radiator and has a first grounded end. The two second grounded radiators are positioned between the two dipole antennas, the two second grounded radiators are separated from the two first grounded radiators and are respectively corresponding to the two first grounded radiators, and a bent gap is formed between the two second grounded radiators.

Abstract: An antenna unit, an antenna system and an antenna control method are disclosed. The antenna unit includes a first radiation metal element, a second radiation metal element, and a third radiation metal element. The first radiation metal element includes a signal feed point, a first ground point, and a second ground point. The signal feed point, the first ground point, and the second ground point are disposed approximately in a straight line. The second radiation metal element is disposed away from the first radiation metal element with a gap and includes a third ground point. The third radiation metal element surrounds the first radiation metal element and the second radiation metal element and includes a fourth ground point.

Abstract: A wearable electronic device is disclosed. Wearable electronic device includes a casing, a dielectric component and an antenna wired circuit. The casing includes a metal bottom, a first metal sidewall connected to the metal bottom, a connection structure disposed at the first metal sidewall, and a second metal sidewall adjacent to the metal bottom and the first metal sidewall with a gap. The dielectric component is installed at the gap to electrically isolate the second metal sidewall from the first metal sidewall and the metal bottom. The antenna wired circuit is disposed at the dielectric component and electrically coupled to the second metal sidewall for resonating to generate a resonance band with the second metal sidewall.

Abstract: An antenna structure including a conductive housing, a substrate, a ground element and a radiation element is provided. The conductive housing includes an open slot and a conductive segment adjacent to each other. The radiation element is disposed on a first surface of the substrate and is electrically connected to the ground element. A second surface of the substrate faces the open slot and the conductive segment. The ground element is electrically connected to the conductive housing. The radiation element has a feeding point and forms a first path. An orthogonal projection of the radiation element on the conductive housing is partially overlapping with the conductive segment such that the conductive housing and the radiation element form a second path. The antenna structure operates in a first band and a second band through the first path and the second path.

Abstract: A communication apparatus is provided. A retaining wall structure electrically connected with a ground plane is disposed between a main circuit board and an antenna. A retaining wall part of the retaining wall structure has a thickness. A distance between the retaining wall part and the main circuit board is a first distance, and a distance between the retaining wall part and the antenna and is a second distance. A distance between the retaining wall and a shielding metal plate is a third distance. The projection of the antenna projected toward the retaining wall in the orthogonal projection direction falls on the retaining wall part.

Abstract: An antenna structure including a metal casing and an antenna assembly is provided. The metal casing has a slit and a slot adjacent to each other. A length of the slit is greater than a length of the slot, and a width of the slit is less than a width of the slot. The antenna assembly is located in the metal casing and near the slit and the slot. An antenna assembly includes a substrate and an antenna pattern. The antenna pattern is disposed on the substrate and encloses a closed zone. The antenna pattern includes a feed end and a ground end to form a first loop and a second loop. Orthographic projections of the antenna pattern and the enclosed closed zone on the metal casing overlap with the slot. The antenna pattern resonates with the slit and the slot to generate a first frequency band and a second frequency band. An electronic device having the antenna structure is further provided.

Abstract: A dual band printed antenna that includes a substrate including a first and a second surfaces opposite to each other and conductive holes, a first and a second drivers, a first and a second reflectors and a transmission line is provided. The first driver is disposed on the first surface to generate a radiation pattern of a first frequency band. The first reflector is disposed on the first surface and apart from the first driver. The second driver is disposed on the second surface to generate a radiation pattern of a second frequency band and electrically coupled to the first driver through the conductive holes. The reflector is disposed on the second surface, corresponding to a position of the first driver and apart from the second driver. The transmission line is disposed on the first surface and coupled to a feeding point and a ground point of the first driver.

Abstract: An electronic device and its antenna assembly are provided. The electronic device includes a display screen, a metal foothold, a motherboard, and an antenna assembly. The display screen and the motherboard are disposed at two opposite surfaces of the metal foothold. The antenna assembly electrically connected to the motherboard includes a metal frame, a plastic sheet, an antenna, and a conductive sheet. The metal frame is disposed at the metal foothold, and one side of the metal frame has an opening, so that the plastic sheet can be embedded in the opening. The antenna includes an antenna main board disposed at the plastic sheet and a double-sided antenna disposed at two opposite sides of the antenna main board. The conductive sheet is connected to the double-sided antenna and lapped over the metal frame.

Abstract: An antenna unit, an antenna system and an antenna control method are disclosed. The antenna unit includes a first radiation metal element, a second radiation metal element, and a third radiation metal element. The first radiation metal element includes a signal feed point, a first ground point, and a second ground point. The signal feed point, the first ground point, and the second ground point are disposed approximately in a straight line. The second radiation metal element is disposed away from the first radiation metal element with a gap and includes a third ground point. The third radiation metal element surrounds the first radiation metal element and the second radiation metal element and includes a fourth ground point.

Abstract: An antenna power adjustment method is provided and applied to an electronic device. The antenna power adjustment method includes: performing position detection by a first acceleration detector and a second acceleration detector, where the first acceleration detector and the second acceleration detector are respectively disposed on a first plate and a second plate of the electronic device, and the first plate and the second plate are connected to each other by using a pivot of the electronic device for relative rotation; calculating an angle between the first plate and the second plate according to results of the position detection of the first acceleration detector and the second acceleration detector; and adjusting a power of an antenna of the electronic device according to the angle.

Abstract: An antenna unit includes a first metal portion, a second metal portion connected to one side of the first metal portion, a third metal portion connected to another side of the first metal portion and opposite to the second metal portion, a feed point disposed at the second metal portion, a first ground terminal, and a second ground terminal. The feed point, the first ground terminal and the second ground terminal are disposed in a straight line. The shape of the first metal portion is mirror-image symmetrical relative to the feed point, the first ground terminal and the second ground terminal.

Abstract: An antenna system includes an antenna array, a wireless transceiver module and a control module. The antenna array includes a first antenna and a second antenna coupled respectively to the wireless transceiver module. The wireless transceiver module sends and receives signals via the first antenna based on a first phase and sends and receives signals via the second antenna based on a second phase. The control module coupled to the wireless transceiver module, and controls the phase difference between the first phase and the second phase. The radiation pattern of the antenna array is modulated towards one pointing direction based on the phase difference.

Abstract: An antenna unit, an antenna system and an antenna control method are disclosed. The antenna unit includes a first radiation metal element, a second radiation metal element, and a third radiation metal element. The first radiation metal element includes a signal feed point, a first ground point, and a second ground point. The signal feed point, the first ground point, and the second ground point are disposed approximately in a straight line. The second radiation metal element is disposed away from the first radiation metal element with a gap and includes a third ground point. The third radiation metal element surrounds the first radiation metal element and the second radiation metal element and includes a fourth ground point.

Abstract: A wireless communication device includes a metallic housing, a circuit board, a metallic heat sink, and first, second and third antennas. The metallic housing includes a chamber. The circuit board is disposed in the chamber for providing a feed signal. The metallic heat sink is disposed on the circuit board and divides the chamber into first and second regions. The first antenna is disposed at the first region along a first direction. The second antenna is disposed at the second region along a second direction perpendicular to the first direction. The third antenna is disposed at the second region along the first direction and located between the metallic heat sink and the second antenna. The first, second and third antennas are coupled with the circuit board. The first, second and third antennas receive the feed signal and at least are capable of generating signals at the same frequency band.

Abstract: An antenna structure including a metal outer cover and an antenna assembly is provided. The metal outer cover has a bent slit. The antenna assembly is stacked on the metal outer cover and covers a portion of the bent slit. The antenna assembly includes a substrate and an antenna pattern disposed on the substrate. The antenna pattern includes a feed end, a first ground end and a second ground end. In the antenna pattern, a first loop and a second loop are formed from the feed end to the first ground end in two respective paths. A third loop is formed from the feed end to the second ground end. The first loop and the third loop resonate with the bent slit to generate a low frequency band and a portion of a high frequency band. The second loop and the third loop resonate with the bent slit to generate another portion of the high frequency band. An electronic device having the antenna structure is further provided.

Abstract: A wearable electronic device is disclosed. Wearable electronic device includes a metal casing, a dielectric support part, a frame-shaped metal part, a dielectric sidewall and a first antenna wired circuit. The metal casing is electrically connected to the system ground. The dielectric support part is disposed on the metal casing. The frame-shaped metal part is disposed on the dielectric support part. One side of the frame-shaped metal part is electrically connected to the metal casing and another side of the frame-shaped metal part has a slot. The dielectric sidewall is surrounding within the metal casing. The first antenna wired circuit is disposed on the inner surface of the dielectric sidewall and insulated from the metal casing. The first antenna wired circuit is near the slot. The first antenna wired circuit and the frame-shaped metal part resonate a first resonant frequency band.

Abstract: A patch antenna includes a grounding portion and a radiating portion. The radiating portion includes a first feeding point, a first grounding point, a second feeding point, and a second grounding point. The first feeding point is electrically connected to a first signal source. The first grounding point is electrically connected to the grounding portion. The second feeding point is electrically connected to a second signal source. The second grounding point electrically connected to the grounding portion. The line formed by connecting the first feeding point and the first grounding point is substantially perpendicular to the line formed by connecting the second feeding point and the second grounding point.

Abstract: A wireless communication system disposed at a wearable electronic device. The wearable electronic device includes a metallic accommodating housing and a first metallic curved piece. The first metallic curved piece is protrudingly disposed at one side of the metallic accommodating housing. The wireless communication system includes a circuit board, a first insulation cover and a first loop antenna. The circuit board is coupled with the first loop antenna to generate a first wireless radio-frequency signal. The first insulation cover surrounds the first metallic curved piece. The first antenna generates a first band and a second band by resonance according to the first wireless radio-frequency signal after electromagnetically coupled with the first metallic curved piece.

Abstract: A wireless communication device includes a housing and a plurality of antenna units. The antenna units surround a surface of the housing and stand on a system ground. Each of the antenna units includes a first radiation part, a second radiation part and a conductive component. The first radiation part has a signal feed point for receiving a feeding signal. The second radiation part surrounds the first radiation part and has a first side, a second side, a first ground point and a second ground point, wherein the first side is parallel to the system ground while the second side is perpendicular to the system ground. The first side is perpendicular to the second side and shorter than the second side. The conductive component is disposed between the first side and the system ground and connected to the first side and the system ground.

Abstract: An electronic device includes a first body and a feed device. A conductive housing of the first body includes a first closed slot, a second closed slot, a feed point and a ground point. The feed device includes a circuit substrate, a feed portion, a ground portion, a first connection portion and a second connection portion. The circuit substrate includes a first surface, a second surface, first conductive holes and second conductive holes, and the first surface faces the conductive housing. The feed portion and the ground portion are disposed on the second surface. The feed portion is electrically connected to the feed point, and the ground portion is electrically connected to the ground point. The feed device and the conductive housing form an antenna. The antenna operates in first and second bands through first and second paths formed by the first and the second closed slots.