Abstract: The outdoor multi-channel antenna mainly contains a case, a reflection box, a reception plate, and a cover. The reflection box is placed inside the case. The reception plate has an antenna waveguide element and is placed inside the reflection box. The waveguide element is fixed and positioned by a support seat. The reception plate contains a curved piece and two wing pieces bended 90 degrees downward from the curved piece. The waveguide element is attached to a back side of the reception plate and is connected via a coaxial cable to a terminal threading through the through openings of the reflection box and the case. The cover tightly seals the case by a ring washer sandwiched therebetween and a waterproof plug sleeves over the terminal.

Abstract: A multi-directional panel antenna is provided for the reception of TV broadcast VHF and UHF signals. The panel antenna's circuit board has its current path substantially covers the surface of the circuit board so as to produce multi-directional reception patterns. An iron-core winding is configured at a feed-in terminal of the panel antenna for impedance matching and signal concentration. The panel antenna also uses air to reduce dielectric loss. A MMIC signal amplification device is provided for enhanced gain. Ceramic capacitors are provided to increase the reception wavelength of the panel antenna so that it falls within a lower section of the VHF band.

Abstract: A television antenna system includes a box-shaped television antenna receiver, an antenna mounted in the television antenna receiver and connected with a television to transmit television signals to the television, a multimedia interface mounted in the television antenna receiver, and a RF modulator mounted in the television antenna receiver and connected between the multimedia interface and the television to transmit audio/video signals from the multimedia interface to the television. Thus, the multimedia interface is connected with the television through the RF modulator. When in use, the television co-operates with the television antenna system to play the audio/video signals of an external multimedia equipment by operation of the multimedia interface, so that the external multimedia information is directly played in the television without having to be played in the computer.

Abstract: An antenna device includes an enclosure defining a receiving compartment and having a back forming a mounting seat for mounting to a fixture and an end forming a connector for connection with a coaxial cable. A reflection case, which is received in the enclosure, includes reflection plates set around the case and has a bottom stamped to form partially cut tabs that are bent upward by an angle of approximately 90 degrees. The diamond-shaped antenna is composed of two quadrilateral antenna boards received in the reflection case and fixed to the bent tabs and has a central portion to which a waveguide is coupled for connection with the connector of the enclosure through a coaxial cable. The enclosure is closed by a cover plate to protect the diamond-shaped antenna from direct exposure to severe weather.

Abstract: The planar multi-directional antenna mainly contains a flat casing and a double-layered circuit board housed inside the casing. The circuit board's two major sides are patterned in a symmetrical manner and traces are routed and extended along the circumference of the circuit board for producing multi-directional reception field pattern. A raised metallic plate is configured in the center on a first major side for avoiding the coupling effect from current converging in the center and for overcoming the dielectric loss by using air. A ferrite core is configured at the feeding terminal of the antenna as a means of impedance conversion. A SMD inductor and a SMD capacitor are provided on the other major side for increasing the antenna's capability of receiving signals of larger wavelength.

Abstract: A multi-directional panel antenna is provided for the reception of TV broadcast VHF and UHF signals. The panel antenna's circuit board has its current path substantially covers the surface of the circuit board so as to produce multi-directional reception patterns. An iron-core winding is configured at a feed-in terminal of the panel antenna for impedance matching and signal concentration. The panel antenna also uses air to reduce dielectric loss. A MMIC signal amplification device is provided for enhanced gain. Ceramic capacitors are provided to increase the reception wavelength of the panel antenna so that it falls within a lower section of the VHF band.

Abstract: The outdoor multi-channel antenna mainly contains a case, a reflection box, a reception plate, and a cover. The reflection box is placed inside the case. The reception plate has an antenna waveguide element and is placed inside the reflection box. The waveguide element is fixed and positioned by a support seat. The reception plate contains a curved piece and two wing pieces bended 90 degrees downward from the curved piece. The waveguide element is attached to a back side of the reception plate and is connected via a coaxial cable to a terminal threading through the through openings of the reflection box and the case. The cover tightly seals the case by a ring washer sandwiched therebetween and a waterproof plug sleeves over the terminal.

Abstract: The planar multi-directional antenna mainly contains a flat casing and a double-layered circuit board housed inside the casing. The circuit board's two major sides are patterned in a symmetrical manner and traces are routed and extended along the circumference of the circuit board for producing multi-directional reception field pattern. A raised metallic plate is configured in the center on a first major side for avoiding the coupling effect from current converging in the center and for overcoming the dielectric loss by using air. A ferrite core is configured at the feeding terminal of the antenna as a means of impedance conversion. A SMD inductor and a SMD capacitor are provided on the other major side for increasing the antenna's capability of receiving signals of larger wavelength.

Abstract: An antenna device includes an enclosure defining a receiving compartment and having a back forming a mounting seat for mounting to a fixture and an end forming a connector for connection with a coaxial cable. A reflection case, which is received in the enclosure, includes reflection plates set around the case and has a bottom stamped to form partially cut tabs that are bent upward by an angle of approximately 90 degrees. The diamond-shaped antenna is composed of two quadrilateral antenna boards received in the reflection case and fixed to the bent tabs and has a central portion to which a waveguide is coupled for connection with the connector of the enclosure through a coaxial cable. The enclosure is closed by a cover plate to protect the diamond-shaped antenna from direct exposure to severe weather.

Abstract: A glass vacuum flask coating method comprising a step to put a metal material in the gap between an inner flask and an outer flask before said inner and outer flasks being formed into a blank for a glass vacuum flask, after the process of exhausting and tipping-off said metal material being heated by a magnetic field generated from an inductance coil into a metal vapor inside said gap, permitting said metal vapor to be adhered to the glass surface inside said gap, forming into a metal reflecting film thereon.