Abstract: A free standing antenna extending longitudinally to present a base and a free end, comprising a helical conductor disposed over an insulated metallic tube.

Abstract: An antenna array, especially for spacing ascertainment or speed ascertainment in the surroundings of motor vehicles, includes devices for transmitting and/or receiving signal waves, which includes a shielding layer construction, made up of at least two layers, which includes the transmitting or receiving devices at least in part. To achieve above all a good immunity to interference, the antenna array includes a differential input buried in a dielectric layer and it includes a transmitting and/or receiving dipole, which is composed of two separate dipole halves.

Abstract: A method for controlling operations of a backlight unit of a liquid crystal display (LCD) is disclosed. The LCD includes a LCD panel and the backlight unit. The LCD panel has a plurality of display units. The backlight unit is placed behind the LCD panel and has a plurality of illumination devices for providing light to the LCD panel. The method includes: (a) keeping at least two of the illumination devices turned on at all times; (b) turning off one of the illumination devices every predetermined time interval; and (c) turning on one of the illumination devices every predetermined time interval.

Abstract: An antenna assembly (700) includes a set of conformal shells (704, 706) housing a set of orthogonal dipoles (102, 104, 108, 110) that produce a circularly polarized radiation pattern. The dipoles (102, 104, 108, 110) are fed by a quadrature hybrid (118) and impedance matching circuit (114). The assembly (700) also includes a set of baluns (126, 128) to reduce VSWR.

Abstract: A collector for an electron beam tube comprises a plurality of electrode stages. The electrode stages are spaced from one another by a non-conductive spacer. The non-conductive spacer is located between portions of electrodes and extends into the collector on a first side and out of the collector on a second side. The non-conductive spacer has an inner portion extending into the collector and an outer portion extending out of the collector and a waisted portion there between. The spacer is held at the waisted portion.

Abstract: An image display apparatus includes a display panel having a plurality of electron emission portions that emit electrons, a plurality of light emitting regions positioned corresponding to the plurality of electron emission portions to emit light in response to irradiation of electrons from the electron emission portion thereon, and a shielding member provided between a substrate having the electron emission portions provided thereon and an opposing substrate having the light emitting regions thereon, and a correction circuit that corrects a pixel signal for modulating the electron emission portions. The shielding member shields electrons reflected from peripheral light emitting regions adjacent to a predetermined one of the light emitting regions to the predetermined light emitting region, and irradiates electrons from the shielding member to the predetermined light emitting region.

Abstract: A relatively low cost, easy to install and aesthetically pleasing digital video broadcast from satellite (DVBS) elliptical horn antenna designed to receive satellite television broadcast signals with circular polarity. This type antenna may be implemented as a multi-beam, multi-band antenna with closely spaced antenna feed horns operable for simultaneously receiving signals from multiple satellites that are closely spaced from the perspective of the antenna.

Abstract: An apparatus is disclosed for a mobile terminal comprising an antenna, a printed circuit board installed in a terminal body and an antenna receiving portion formed on one side of the terminal body for mounting the antenna. The antenna is slidably-inserted in the antenna receiving portion to elastically and electrically couple the antenna to an antenna contact portion on the printed circuit board.

Abstract: An antenna comprising a rectangular reflector; first and second dipole antennae disposed in front of the reflector and aligned parallel to the long edge of the reflector; rod-shaped first metal conductors arranged parallel to the first and second dipole antennae and separated from the dipole antennae by a distance X1 to the outside in the direction parallel to the short edge of the reflector, and separated by a distance Y1 in the direction perpendicular to the reflector; and rod-shaped second metal conductors disposed at a position separated from the dipole antennae by a distance X2 greater than distance X1 to the outside with respect to each other, and separated by a distance Y2 greater than distance Y1 forward in the direction perpendicular to the reflector.

Abstract: A flat base plate sits atop a motor-vehicle panel and is formed with a mounting pin extending downward through the panel. A flat antenna circuit board sits on the base plate, and a connector cable extends upward through the pin and through the base plate and is connected to the circuit board. A one-piece mounting element is unitarily formed with an upper face and latch legs projecting upward from the upper face and having barb ends latchingly engageable with the circuit board to retain the circuit board on the upper face. It is further unitarily formed with a lower face and latch legs projecting downward from the lower face through the base plate and roof panel and having barb ends latchingly engageable with the roof panel to hold the circuit board and base plate down against the roof panel.

Abstract: The present system for driving an electronic light generating element, includes: (i) input terminals, (ii) an input circuit coupled to the input terminals and operable to convert a sinusoidal signal to a signal independent of negative current attributes, (iii) a switch control circuit coupled to the input circuit and operable to generate a switching signal having pulses, and (iv) a switching element coupled to the input circuit and the switch control circuit. The switching element is operable to generate an output signal formed as a series of bursts having peak amplitudes above a maximum forward current rating for a duty cycle less than a maximum operating duty cycle over which an electronic light generating element may be catastrophically damaged in response to the signal independent of negative current attributes and switching being applied to the switching element. The output signal is applied to the electronic light generating element to produce light.

Abstract: Provided is a horn antenna for circular polarization using a planar radiator. The horn antenna has a simplified and miniaturized structure by substituting a function of a providing signal power to the horn antenna with a function of a circular polarizer which induces circular polarization by using the planar radiator. The horn antenna includes: a horn for radiating signal power; and a planar radiator for providing the signal power to the horn to thereby induce circular polarization, the radiator including a radiating patch.

Abstract: A plasma display includes a plasma display having a plurality of X electrodes and Y electrodes arranged alternately, and a plurality of M electrodes respectively formed between the X and Y electrodes, and a plurality of insulated address electrodes crossing the X, Y, and M electrodes. A common coupling line is formed on the plasma display panel and is coupled to a first voltage, the common coupling line coupling the X electrodes in common. A Y electrode driver applies a waveform for driving the Y electrode. An M electrode driver applies a waveform for driving the M electrode. A flexible printed circuit couples the M electrode driver and the M electrodes.

Abstract: An RMIM electrode, a method for manufacturing the RMIM electrode, and a sputtering apparatus using the RMIM electrode, wherein the RMIM electrode includes a magnet unit including a cylinder-shaped magnet located at a center of the magnet unit and a plurality of ring-shaped magnets having increasingly larger diameters surrounding the cylinder-shaped magnet; and a driver unit for supporting and for off-axis-rotating the magnet unit, wherein in the magnet unit, adjacent magnets have opposite magnetization directions.

Abstract: A directional antenna array is provided that includes a driven element and a first parasitic element separated from the driven element with the first parasitic element and/or the driven element having a width that is greater than about one-half a percent (0.5%) of an free-space wavelength of the directional antenna array. Alternatively or in conjunction, the directional antenna array includes a balun structure that is configured to couple the driven element to at least one of an electromagnetic energy source and an electromagnetic sink, and the balun structure includes a dipole structure, a first feed point extending from the dipole structure and a second feed point extending from the first parasitic element.

Abstract: A feedhorn, a radio wave receiving converter, and an antenna that can be reduced in size and have high reliability can be obtained. A feedhorn portion constitutes part of a converter, and includes a chassis body with a waveguide having an opening, a dielectric as a dielectric member connected to the opening, and a waterproof cover as a protective member. The waterproof cover covers the dielectric and contacts (tightly attached) to a portion of the surface of the dielectric (in the dielectric, the portion of the surface away from waveguide). The waterproof cover is formed of a material having substantially the same electric characteristics (permittivity and dielectric loss tangent) as the material forming the dielectric.

Abstract: A pixel circuit of a light-emitting display that reduces the influence of kickback generated by parasitic capacitance. The pixel circuit includes first to fourth transistors, a capacitor, and a light-emitting element. The first and second transistors are serially coupled to each other and turned on in response to a first control signal. The capacitor is coupled in parallel with the first and second transistors. The third transistor supplies a data voltage to a first electrode of the capacitor in response to a select signal. The fourth transistor outputs a current corresponding to its gate-source voltage, which is based on the voltage of the capacitor. The light-emitting element emits light corresponding to the current from the fourth transistor.

Abstract: A loop-slot antenna defined by a conductive plate includes a first slot and a second slot. The first slot and the second slot divide the conductive plate into a first strip, a second strip and a patch element. The first slot is an L-shaped slot and includes a transverse slot section extending along the lower edge of the conductive plate and a longitudinal slot section extending along the left edge of the conductive plate and opening to the upper edge of the conductive plate. The first slot is operated at a first frequency. The first strip includes a transverse branch and a longitudinal branch that has a feed point. The second slot opens upward. The second strip has a free end on which a grounding point is disposed. The patch element is formed between the first and the second slots and operable at a second frequency.

Abstract: The control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies maintains constant power in a variable load. This constant power control circuit provides a closed loop constant power management process for gas discharge lamps by adding a scaled lamp voltage to a scaled voltage that is equivalent to the measured lamp current. This sum is then fed to a comparator for comparison with a fixed reference voltage. If there is a difference between the sum and the reference voltage, the comparator sends this information to an error amplifier of the gas discharger lamp power control circuit for corrective measures and closed loop control of gas discharge lamp power. Since the sum always must attain the same value as determined by reference voltage, when the lamp voltage increases from its nominal or initial value, the lamp current is decreased by a corresponding ratio to maintain a constant power in the gas discharge lamp.

Abstract: An antenna assembly includes a base board defining a grounding and dielectric domains, a ground metal layer fabricated on the grounding domain, a dielectric medium mounted on the dielectric domain, and having an upper surface and one lateral surface, a first metal strip including a wave-like strip section mounted on the upper surface of the dielectric medium, and a lateral strip section mounted on the lateral surface of the dielectric medium, and a second metal strip fabricated on the lateral surface of the dielectric medium and having a coupling end coupled electrically to the ground metal layer. After assembly, the first and second metal strips and the ground metal layer cooperatively form an oscillator by virtue of electromagnetic induction to posses a specific frequency range.