Abstract: A waterproof housing is used for accommodating electronic components of an antenna device. The waterproof housing includes a casing and a base body. The casing has a plurality of combination holes disposed on a sidewall thereof, and the electronic components are disposed on the base body. The base body has a plurality of combination members corresponding to the combination holes. The electronic components are accommodated inside the casing by snapping the combination members and the combination holes. The positions of the electronic components are higher than those of the combination holes, when rain water comes into the casing through the combination holes, the rain water will flow down into the base body, and thus the electronic components are prevented from being wet and damaged by the rain water.

Abstract: A dustproof and waterproof performance detection device for a user to observe a dustproof and waterproof performance detection process of an object by naked eyes is described. The detection device includes a box with at least one transparent side, a carrier, and a gauge. The carrier is movable in the box in a depth direction of the box. The box carries water for a tester to perform the dustproof and waterproof performance detection, such that the tester uses the carrier to carry the object, so as to move the object to a detection position and compare with scales of the gauge. Therefore, the tester is able to participate in the whole detection process.

Abstract: An omni-directional high gain dipole antenna includes a first rod antenna portion, a first helical antenna portion, a second rod antenna portion, a second helical antenna portion, and an impedance matching portion. The helical antenna portions having different helical pitches are serially-connected to the rod antenna portions, so as to prolong an antenna array distance of the dipole antenna. The serially-connected impedance matching portion adjusts a line impedance value of the dipole antenna, so as to enhance a radiation field pattern gain of the dipole antenna.

Abstract: An airtight tester is used to test air tightness at a testing position of an object to be tested. The airtight tester includes a base, a leakage-test pipe, a moving unit, and a detector. The leakage-test pipe is connected to a pressure source, such that the pressure source may output a pressure to the leakage-test pipe. When the leakage-test pipe covers at the testing position of the object, the moving unit is pressed at an outer edge of the leakage-test pipe, so that the leakage-test pipe is jointed to a surface of the object, and thus, the detector detects the pressure state of the leakage-test pipe. Therefore, the testing staff obtains the air tightness of the object through an output message of the detector, and thus strengthening the structure of the object through utilizing the information.

Abstract: A dual-frequency high-gain antenna is provided, which includes: a diplexer loop portion disposed at the center of the antenna substrate for receiving a feed signal; two single-frequency radiation units, symmetrically connected to two sides of the diplexer loop portion for radiating a radio-frequency signal corresponding to a first frequency value of the feed signal; and two dual-frequency radiation units, respectively connected to each single-frequency radiation portion for radiating radio-frequency signals corresponding to the first frequency value and a second frequency value of the feed signal.

Abstract: A symmetric-slot monopole antenna is provided, including a metallic board. Formed on the metallic board are a ground connection part to provide a ground circuit for the monopole antenna and a radiation part formed integrally on the ground connection part to receive and radiate signals transmitted through a signal cable.

Abstract: A dual-frequency high-gain antenna is provided, which includes: a diplexer loop portion disposed at the center of the antenna substrate for receiving a feed signal; two single-frequency radiation units, symmetrically connected to two sides of the diplexer loop portion for radiating a radio-frequency signal corresponding to a first frequency value of the feed signal; and two dual-frequency radiation units, respectively connected to each single-frequency radiation portion for radiating radio-frequency signals corresponding to the first frequency value and a second frequency value of the feed signal.

Abstract: An antenna assembly includes a plurality of wireless signal transceivers and at least one positioning plate. Each of the wireless signal transceivers includes a base fixed on the positioning plate. The positioning plate has an expansion capability for a plurality of bases being fixed thereon, such that a user can add or reduce the number of the wireless signal transceiver independently.

Abstract: An antenna with a lighting function includes an accommodation body, a light-transmissive head, a light source, and an antenna component. The accommodation body has an accommodation space therein, and the light-transmissive head is disposed on the accommodation body and allows lights to transmit through. The light source is disposed within the light-transmissive head, and emits a light that is transmitted out of the light-transmissive head. Finally, the antenna component is accommodated within the accommodation body, for transmitting wireless signals and for lighting.

Abstract: A dual-band multi-mode array antenna is provided, including an antenna substrate with antenna units each of which having a feeding via; and a conductive substrate connected to the antenna substrate to form an angle in between. The conductive substrate has a symmetric feeding network disposed on a surface of the conductive substrate; and a first ground portion disposed on another surface of the conductive substrate. The symmetric feeding network and the first ground portion are electrically coupled to each of the antenna units through the feeding vias. Moreover, the antenna units are electrically coupled in parallel.

Abstract: A rotary spindle structure applied in a housing is provided, which includes two spindle lugs having a suspended resilient butt joint respectively. When a spindle rod is fit in the spindle lugs, both end faces of the spindle rod bear against the resilient butt joints, so that the resilient butt joints are forced to expand outwards till a pivot hole of the spindle rod is snapped with protruding walls of the spindle lugs, and thus, the spindle rod is freely rotationally connected to the spindle lugs. Furthermore, a pair of reinforcing pads is used to bear against the resilient butt joints to enhance the joining strength between the spindle lugs and the spindle rod.

Abstract: A bi-frequency symmetrical patch antenna includes two bi-frequency symmetrical radiation units, each having a first band radiation section and two second band radiation sections, to radiate a feed-in signal in a selected direction. Further, the antenna has a power distribution unit, to evenly distribute the feed-in power, corresponding to the feed-in signal, to each bi-frequency symmetrical radiation unit. The power distribution unit has two side arms connecting respectively to each bi-frequency symmetrical radiation unit to increase the bandwidth range of the bi-frequency antenna.

Abstract: A broadband dipole array antenna adopted for use in radio transmission includes a feed network, radiation units and a reflection plate. The antenna is held vertically in a trough of the reflection plate, which reflects the radiation signals of the antenna to enhance antenna directionality. The antenna and the reflection plate are fastened with adhesive tape or a Velcro strip in the trough to facilitate assembly of the antenna.

Abstract: A broadband symmetrical dipole array antenna adopted for use in radio transmission includes a symmetrical feed network, symmetrical radiation units and a reflection plate. The symmetrical feed network and the symmetrical radiation units form an antenna field of a narrower radiation angle range. The reflection plate is spaced from one side of the antenna in a parallel fashion at a selected distance to reflect the radiation signals and enhance antenna directionality.

Abstract: A double frequency antenna for transmitting and receiving radio signals includes a first substrate and a second substrate. The first substrate has a first surface and a second surface opposing each other. The first surface has a first radiation section to radiate a corresponding first frequency. The second surface has a first ground section. The second substrate has four L-shape corners, and a first surface and a second surface opposing each other. The first surface has a second radiation section to radiate a corresponding second frequency. The second surface has a second ground section.

Abstract: A printed circuit antenna for applications in electronic devices with wireless transmission abilities. The printed circuit antenna contains a substrate and a connector. Both surfaces of the substrate have a feed line, a feed section and a radiation section for wireless transmissions. The connector connects the substrate to an electronic device, with one end having a surface connecting to the substrate and the other end connecting to the electronic device. The connecting plane has an annular concave area in its central region, separating the connecting plane into two connecting regions. This can increase the connection area between the connector and the substrate to avoid breakings and/or departure.