Abstract: A V type aperture coupled circular polarization patch antenna constructed with a microstrip line formed on a rear face of a dielectric substance, a ground surface formed on an entire face of the dielectric substance, a V type aperture formed at a desired angle on the basis of a portion of the ground surface, which overlaps with the microstrip line, and a patch formed into a rectangular shape and mounted at an upper portion of the aperture so as to cover the aperture. At 1.9375 GHz, which is one of center frequencies of IMT-2000, the reflection loss is −11.34 dB, the band width at minus 10 dB is 15.2% (295 MHz), the beam width is 60°, and a proper circular polarization may be obtained.

Abstract: There is provided a delay time calculating method for use in a hierarchical design, capable of accurately calculating the delay amount at a boundary between different level layers in a hierarchical structure. A whole chain (T$01 to T$13) is divided into a first partial chain (T$04 to T$10) and a second partial chain (T$01 to T$03, T$11 to T$13). A first delay amount (TD(4-10)) of the first partial chain (T$04 to T$10) is calculated. A third partial chain (T$01 to T$05, T$09 to T$13) consisting of the second partial chain (T$01 to T$03, T$11 to T$13) and a plurality of chain elements (T$04 to T$05, T$09 to T$10) included in an end region of the first partial chain (T$04 to T$10), is generated, and a second delay amount (TD(1-5), TD(9-13)) of the third partial chain (T$01 to T$05, T$09 to T$13) is calculated.

Abstract: There is provided a lamp unit for light radiating type heating device which allows efficient cooling of the lamps, and the temperature increase of a semiconductor wafer irradiated with the lamp unit is faster than in the prior art without the need of a complicated and large cooling structure.

Abstract: A screw motion-driven tensegrity antenna support architecture is configured to stably deploy and adjustably control an energy-focusing surface, such as an RF wave-reflecting conductive mesh. A parallel platform structure is configured of an upper hexagonal platform and a lower hexagonal base, the perimeter geometry of each of which is defined by plural interconnected tensioned ties. Vertices of the hexagonal tie base and the hexagonal upper tie platform are interconnected by pairs of legs, each including a compression strut and a tension tie. The stability of the structure requires that the sum of the tie tension forces matches the sum of the compression forces in the struts. To control deployment from a stowed condition and the geometric parameters of the deployed RF reflecting surface, a screw motion-based drive system is coupled to the struts to define relative mutual rotation and pitch between the upper platform and lower base.

Abstract: A window glass antenna apparatus for vehicles includes a defogger for defogging a window glass of a vehicle, which has bus bars at both ends and which is constituted of a thin, narrow strip conductor formed on the window glass such that the bus bars are opposed to a window metal frame of the vehicle with a predetermined gap therebetween, a driven antenna having a height and arranged close and opposite to the defogger with a predetermined clearance such that one side of the driven antenna is mutually coupled to that of the defogger, and a short circuit for causing a short circuit between each of the upper right and left ends of the bus bars and the window metal frame at a high frequency.

Abstract: A neon sign includes a transformer module and a receptacle attached to the neon sign for receiving the transformer module. The transformer module is configured to mate with the receptacle as the transformer module is plugged into the receptacle in order to connect the transformer module to the neon sign. The transformer module includes a high voltage transformer for transforming a primary input voltage into a secondary high voltage output. The transformer module also includes secondary contacts for connecting the secondary high voltage output of the transformer module to the neon sign when the transformer module is plugged into the receptacle. The receptacle also includes secondary contacts configured to mate with the secondary contacts of the transformer module as the transformer module is plugged into the receptacle thereby electrically connecting the secondary high voltage output of the high voltage transformer to the neon sign.

Abstract: An antenna device comprises an antenna section and a filter section which are formed in an integrated manner in a dielectric substrate, wherein the antenna section and the filter section are coupled to one another via a capacitance. Further, 0.3×Lr≦Lt≦1.2×Lr is satisfied provided that an antenna length of the antenna section is Lt, and an antenna length measured for a single antenna is Lr. Accordingly, it is possible to realize a small size of the antenna device while avoiding the decrease in gain and the disadvantage of narrow band.

Abstract: Disclosed herein is a current control for a lighting assembly, which may be an LED lighting assembly, which may be a pulse width modulated (“PWM”) current control or other form of current control where each current-controlled unit is uniquely addressable and capable of receiving illumination color information on a computer lighting network. In an embodiment, the invention includes a binary tree network configuration of lighting units (nodes). In another embodiment, the present invention comprises a heat dissipating housing, made out of a heat-conductive material, for housing the lighting assembly. The heat dissipating housing contains two stacked circuit boards holding respectively the power module and the light module. The light module is adapted to be conveniently interchanged with other light modules.

Abstract: A high-frequency, e.g., microwave, antenna (100) is stamped from a single sheet (300) of electromagnetically conductive material, e.g., a metal plate. A manufacture comprising a frame (104), a plurality of radiator antenna elements (108), a plurality of first supports (112) each connecting a radiator antenna element to the frame, a feed network (110) connected to the radiator antenna elements, and a plurality of second supports (304) connecting the radiators and the feed network to each other and to the frame, are stamped out of the single sheet. A combiner (114) may be included in the manufacture as well. The second supports provide alignment and rigidity during manufacture and assembly. Preferably, a plurality of the manufactures are stamped out side-by-side from a single roll (400) for ease of automated manufacture and assembly.

Abstract: A reflector antenna system with multiple feeds each operating in a separate frequency band. The antenna system includes a main parabolic reflector and an ellipsoidal subreflector configured in a Gregorian arrangement. Mutual blockage between the multiple feeds is reduced by their orientation and arrangement. The system includes a transversely positioned feed and an axial feed located in the focal region of the main reflector. The transverse feed may be integral with the subreflector. The system also includes a third feed placed at the virtual focal point of the subreflector.

Abstract: An antenna. The antenna includes a first dielectric antenna rod having a first dielectric constant. The first dielectric antenna rod is coupled to a first frequency transmission source for propagating first frequency band radiation from the first dielectric antenna rod into a medium having a medium dielectric constant. A second dielectric antenna rod is provided having a second dielectric constant. The second dielectric antenna rod is coupled to a second frequency transmission source for propagating second frequency band radiation from the second dielectric antenna rod into the medium. The first dielectric antenna rod is coaxially mounted within the second dielectric antenna rod. The first dielectric constant is greater than the second dielectric constant. The second dielectric constant is greater than the medium dielectric constant.

Abstract: An inductorless ballast including four transistors arranged in a full-bridge configuration for supplying a high voltage AC step-type signal across a fluorescent lamp. The circuit of the present invention eliminates the need for an inductor, thereby resulting in a smaller, lighter and more reliable ballast which can fit into a fluorescent lamp socket.

Abstract: A spark gap assembly having electrodes spaced from bonding pads and the integrated circuit. The electrodes contact a plurality of resistors to reduce voltages and dissipate energy experienced during electrostatic discharge (ESD) which would otherwise damage the integrated circuit.

Abstract: Disclosed herein is a current control for a lighting assembly, which may be an LED lighting assembly, which may be a pulse width modulated (“PWM”) current control or other form of current control where each current-controlled unit is uniquely addressable and capable of receiving illumination color information on a computer lighting network. In an embodiment, the invention includes a binary tree network configuration of lighting units (nodes). In another embodiment, the present invention comprises a heat dissipating housing, made out of a heat-conductive material, for housing the lighting assembly. The heat dissipating housing contains two stacked circuit boards holding respectively the power module and the light module. The light module is adapted to be conveniently interchanged with other light modules.

Abstract: A windowpane antenna apparatus for vehicles according to the present invention includes a defogger mounted on a window of a vehicle, for defogging the window, means for causing the defogger to serve as a slot antenna, and a driven antenna arranged close and opposite to the defogger with a given gap therebetween in such a manner that one side of the driven antenna is mutually coupled to one side of the defogger.

Abstract: A thin film of ferroelectric layered superlattice material in a flat panel display device is energized to selectively influence the display image. In one embodiment, a voltage pulse causes the layered superlattice material to emit electrons that impinge upon a phosphor, causing the phosphor to emit light. In another embodiment, an electric potential creates a remanent polarization in the layered superlattice material, which exerts an electric field in liquid crystal layer, thereby influencing the transmissivity of light through the liquid crystal. The layered superlattice material is a metal oxide formed using an inventive liquid precursor containing an alkoxycarboxylate. The thin film thickness is preferably in the range 50-140 nm, so that polarizabilty and transparency of the thin film is enhanced. A display element may comprise a varistor device to prevent cross-talk between pixels and to enable sudden polarization switching. A functional gradient in the ferroelectric thin film enhances electron emission.

Abstract: The present invention relates to a circuit for a portable lighting product such as flashlight, lantern, desk lamp, area light, combination area light and flashlight, front and rear bicycle light, emergency light, night light, rechargeable versions of any of those products previously mentioned, in which several power sources are provided. The invention includes the feature that each power source is electrically isolate from each other by the switch in mechanism or mechanisms, when the portable lighting product is switched to the off condition. The power sources can include single dry cells, or sets of series connected dry cells of any number.

Abstract: A fault protection circuit for fluorescent lamp ballasts cuts off ballast power to the lamp in response to fast rise-time changes but not slower changes in either current output or voltage output of the ballast. The fault protection circuit is compatible with different ballast circuit topologies and features a floating reference level which renders the circuit insensitive to the lamp load wattage, making the circuit particularly useful in so-called universal ballasts.

Abstract: A gas discharge lamp and a method of operating the lamp is provided. The gas discharge lamp includes a lamp, a ballast for providing an AC voltage to the lamp and a frequency changer which selects an initial AC frequency at which the ballast provides the AC voltage and which changes the AC frequency to a second AC frequency, wherein the second frequency is higher than the initial frequency.

Abstract: In a directional coupler comprising two separated dielectric guides, reflection and loss in the separation position (separated faces) is reduced. Furthermore, the beam of an antenna device comprising a primary emitter and a dielectric lens can be tilted quickly even by a low-torque motor. A moving portion and a fixed portion each comprise dielectric guides, and in addition, grooves are provided in opposing end faces of conductive plates thereof, at a distance from the electrode faces of the dielectric guides of approximately an integral multiple of half the wavelength of the transmitted waves. Furthermore, the dielectric guide of the directional coupler portion is a normal NRD guide, and the dielectric guide of another portion is a hyper NRD guide.