Abstract: An unbalanced antenna includes a non-conductive substrate having one short edge, and two long edges connected respectively to two opposite ends of the short edge and parallel to each other, and an unbalanced antenna disposed proximate to the short edge of the non-conductive substrate and having a ground portion. A ground plane has side edges extending along the long edges of the non-conductive substrate, and is electrically coupled with the ground portion. The length of the ground plane is longer than a quarter of an equivalent wavelength corresponding to an operating frequency of the unbalanced antenna. A pair of choke sleeve structures are symmetrically disposed at opposite sides of the ground plane and spaced apart from the unbalanced antenna by a quarter of an equivalent wavelength corresponding to the operating frequency. Each choke sleeve structure has one end connected to the ground plane, and the other end extending in a direction away from the unbalanced antenna.

Abstract: A hybrid multi-antenna system includes a system circuit board, an antenna substrate, at least a dipole antenna, and at least a monopole-slot antenna. The system board has at least a system ground plate, and the system ground plate is served as a reflector of the hybrid multi-antenna system. The antenna substrate and the system ground plate have a first distance therebetween. The dipole antenna having a first signal feed-in source and the monopole-slot antenna having a second signal feed-in source respectively provide a first and second operating band, and they are on a surface of the antenna substrate. The monopole-slot antenna is located nearby the dipole antenna. The monopole-slot antenna and the dipole antenna have a second distance therebetween. The first and second signal feed-in sources are vertical to each other, and have the phase difference of 90°.

Abstract: A stand-alone multi-band antenna includes an antenna ground plate, a shielding metal wall, a first radiating unit, and a signal feed-in source. The first radiating unit connected to at least one side of the antenna ground plate and located above the antenna ground plate is an antenna structure generating the fringing-field. The first radiating unit provides a first operating band and a second operating band. The shielding metal wall is connected to a plurality of the adjacent sides of the antenna ground plate, and the height thereof is larger than or equal to that of the first radiating unit, therefore limiting the fringing-field of the first radiating unit within the stand-alone multi-band antenna. The signal feed-in source has a signal feed-in point and a ground point. The signal feed-in point is electrically connected to the first radiating unit, and the ground point is electrically connected to the shielding metal wall.

Abstract: The invention relates to a dual-feed antenna. The dual-feed antenna includes a substrate, a first antenna unit and a second antenna unit. The second antenna unit includes a second radiating unit and a second grounding unit. The second radiating unit includes a second radiator which has a first groove. The first groove has a first bottom and a pair of first arms. The second grounding unit includes a first sub-grounding-area and a second sub-grounding-area. The second sub-grounding-area has a second groove which includes a second bottom and a pair of second arms. The first sub-grounding-area is cross-wise connected with the second sub-grounding-area at the bottom of the groove, and the second arms symmetrically distribute to both sides of the first sub-grounding-area, and the first groove has an opening direction opposite to the opening direction of the second groove.

Abstract: A built-in multi-antenna module includes a grounding unit, a plurality of first radiating units and a plurality of second radiating units. The first and the second radiating units are disposed on the grounding unit. Each first radiating unit has a first radiating body, a first feeding pin extended downwards from the first radiating body, and a first shorting pin extended downwards from the first radiating body and connected to the grounding unit. Each second radiating unit has a second radiating body, a second feeding pin extended downwards from the second radiating body, and a second shorting pin extended downwards from the second radiating body and connected to the grounding unit. The first radiating units and the second radiating units are alternately and symmetrically arranged on the grounding unit, and many included angles respectively formed between each first radiating unit and each second radiating unit are the same.

Abstract: The present invention relates to a keyboard device. The keyboard device includes a base, a main circuit board, a base cover, a touching membrane switch, a touching thin plate, an upper cover and a plurality of keys. The touching membrane switch is activated to implement a predefined hot key function so as to reduce fabricating cost.

Abstract: An antenna system includes: and antenna module and a system module. The antenna module includes a substrate, and a plurality of planar dipole antennas each including a short-circuit section, two first radiator sections operable in a first frequency band and connected to the short-circuit section, and two second radiator sections operable in a second frequency band and connected to the short-circuit section. The planar dipole antennas are arranged such that geometric centers thereof are respectively spaced apart from a center point bounded by the planar dipole antennas by a predetermined distance, such that each of the planar dipole antennas is spaced apart from an adjacent one of the planar dipole antennas by a predetermined minimum distance. The system module has a grounding plane that faces toward and that is spaced apart from and parallel to the substrate.

Abstract: A multi-loop antenna system includes: a plurality of loop antennas disposed on a substrate and arranged such that each of extending lines extending respectively from geometric centers of the loop antennas to a center point that is bounded by the loop antennas has a predetermined length, and that each of the loop antennas is spaced apart from an adjacent one of the same by a predetermined distance; and a system module facing toward and being spaced apart from and parallel to the substrate such that the grounding plane is able to reflect radiation from the loop antennas. Each of the loop antennas includes first and second radiator portions operable in respective frequency bands; the former having opposite ends that respectively serve as signal-feed and grounding sections; the latter having opposite ends that are connected respectively to the signal-feed and grounding sections.

Abstract: A multi-input and multi-output antenna system is disclosed. The antenna system includes a predetermined quantity of dual-feed and dual-band antennas that are arranged into a polygon on a plane. The dual-feed and dual-band antenna includes a substrate, a grounding unit disposed on the substrate and having two opposite sides, a first radiating unit disposed on the substrate near one side of the grounding unit, and a second radiating unit disposed on the substrate near the other side. The second radiating unit has a shorting element that is electrically connected to the grounding unit. The polygon is bounded by lengthwise projection lines of the dual-feed and dual-band antennas.

Abstract: An antenna device includes: a substrate; micro-strip and grounding portions that are respectively disposed on opposite first and second surfaces of the substrate, the former including a signal-feed section for feeding of signals and a plurality of first connecting sections electrically connected to the signal-feed section; and a plurality of first loop antennas arranged along a peripheral edge of the grounding portion, each including a first radiator portion disposed on the first surface and electrically connected to a respective one of the first connecting sections, and a second radiator portion disposed on the second surface, electrically interconnecting the first radiator portion and the grounding portion, and cooperating with the first radiator portion to form a loop.

Abstract: A multi-loop antenna system includes a substrate having opposite first and second surfaces, a first loop antenna disposed on the first surface, and a second loop antenna disposed on one of the first and second surfaces. Each of the first and second loop antennas is operable in a corresponding one of first and second frequency bands, and includes a signal-feed portion and a grounding portion that are disposed adjacent to each other and that are disposed proximate to a respective one of peripheral edges of the substrate, and a radiator portion that has opposite ends connected electrically and respectively to the signal-feed and grounding portions and that cooperates therewith to form a loop.

Abstract: A web conferencing server, including a conferencing module, a monitoring module and a control module, is provided. The conferencing module enables a plurality of participants to attend a web conference and further provides a first participant with a conference right, which allows the first participant to issue a conference command. The monitoring module monitors the status of the first participant in order to generate a status notification. In response to the status notification, the control module issues a control command to the conferencing module, to withhold the conference right from the first participant.

Abstract: A wideband antenna for receiving digital television signals includes a substrate, a radiating plate, a first radiating element, and a second radiating element. The radiating plate is formed on the substrate and the radiating plate has a first radiating area, a second radiating area and a slit formed between the first and the second radiating areas. The first and the second radiating elements are pivotedly connected to the radiating plate. The first radiating element and the second radiating element are constructed as a dipole antenna structure of the antenna so as to excite a first resonant mode. The radiating plate also acts as a matching circuit thereon so as to excite a second resonant mode. The center frequency of the second resonant mode is shifted toward the center frequency of the first resonant mode with the incorporation of the radiating plate so that the antenna has a wideband characteristic.

Abstract: Semiconductor devices and methods for fabricating the same. The devices includes a substrate, a first etch stop layer, a dielectric layer, an opening, and an anti-diffusion layer. The first etch stop layer overlies the substrate. The dielectric layer overlies the first etch stop layer. The opening extends through the dielectric layer and the first etch stop layer, and exposes parts of the substrate. The anti-diffusion layer overlies at least sidewalls of the opening, preventing contamination molecule diffusion from at least the first etch stop layer, wherein the anti-diffusion layer is respectively denser than the first etch stop layer and the dielectric layer.

Abstract: A dipole antenna includes interconnected first and second grounding portions, first and second connecting portions bending respectively from the first and second grounding portions in a substantially same direction, first and second extending portions extending respectively from the first connecting portion, and third and fourth extending portions extending respectively from the second connecting portion. The second extending portion is disposed closer to the first grounding portion than the first extending portion. The fourth extending portion is disposed closer to the second grounding portion than the third extending portion.

Abstract: The present invention is related to a shorted monopole antenna. The antenna includes a ground portion, a radiating portion, a shorting portion, an assembling portion, and a coaxial cable. The ground portion includes a signal grounding point. The radiating portion is located above the ground portion and bent at least once, and includes a signal feeding point. One end of the shorting portion is connected to one of the short edges of the ground portion, and the other end is connected to one edge portion of the radiating portion. The assembling portion is connected to the long edge of the ground portion. The coaxial cable includes an inner conductor and an outer conductor, which are connected to the signal feeding point and the signal grounding point respectively. The antenna invented has good impedance bandwidth and radiation characteristics, can easily be installed inside the housing of an electronic device, and is well suitable for applications in wireless communications devices.

Abstract: A mobile device includes a ground plane, a conductive housing disposed on the ground plane including a sidewall, a first conductive strip spaced apart from the conductive housing, and a second conductive strip electrically connecting the first conductive strip to the conductive housing.

Abstract: The hybrid multiple-input multiple-output antenna module includes a grounding unit, a plurality of radiating units, loop units and filter units. The radiating units and the loop units are arranged around a geometric center of the grounding unit and are alternately and symmetrically arranged on the grounding unit. The loop units are arranged along the outer peripheral side of the grounding unit. The filter units are respectively electrically connected to the loop units. The present invention not only has some advantages such as small size, low profile, good isolation, high antenna gain and good radiation properties, but also can replace the external dual-band access-point antenna of the prior art for 2.4/5 GHz operation with no need of an extra diplexer. In addition, the hybrid multiple-input multiple-output antenna module can be hidden in the wireless communication device in order to enhance the appearance of the product.

Abstract: A wireless communications device is provided with a plurality of card slots, a first wireless communications module, and a second wireless communications module. The card slots are inserted with at least one subscriber identity card. The first wireless communications module performs wireless transceiving in compliance with at least a first wireless technology. The second wireless communications module determines at least a first subscriber number and a second subscriber number from the at least one subscriber identity card, and enables the wireless transceiving of the first wireless communications module using the first subscriber number. Also, the second wireless communications module performs wireless transceiving in compliance with at least a second wireless technology using the second subscriber number.