Abstract: An object of the present invention is a small composite antenna that is capable of operating in a plurality of different frequency bands. A first antenna 2 constituting a GPS circularly polarized loop antenna is formed on a dielectric substrate 10. A second antenna 3 constituting an ETC square patch antenna is formed on substantially the same axis as the first antenna 2. An earth pattern is formed in the underside of the dielectric substrate 10, and a recess in whose bottom face an earth pattern is formed so as to lie opposite the second antenna 3 is provided. An arc-shaped feed pattern 4 is electromagnetically coupled to the first antenna 2 so as to supply electricity thereto, whereby this antenna is made to operate as a right-handed circularly polarized antenna. Electricity is supplied by a coaxial cable to the second antenna 3 to cause same to operate as a right-handed circularly polarized antenna.

Abstract: A method and apparatus for early occlusion culling are provided. For the method of the present invention, a host processor establishes a coarse Z-buffer. The coarse Z-buffer is divided into a series of tiles. Each tile has an associated depth value. The depth values are updated using information fed back from the Z-buffer. The host processor uses the depth values to selectively discard occluded objects before they are rendered.

Abstract: The unbalanced feeding antenna element 201 is fed power from one end and placed on the upper surface of the circuit substrate 103. The passive element 202 has open both ends, is set to a length corresponding to a predetermined frequency, placed in substantially parallel to the unbalanced feeding element 201 placed on the circuit substrate 103 at a distance of approximately 1/10 or less of a wavelength at a frequency used for transmission/reception. This suppresses the antenna current flowing into the circuit substrate 103 to a minimum level and makes radiation from the passive element 202 dominant compared to radiation from the circuit substrate 103. This makes it possible to suppress a reduction in the antenna gain caused by the human body when the user uses the communication terminal apparatus.

Abstract: A tubular resin member constituting the frame of a feed horn is divided into an inner side resin member located at an inner circumferential plane side and an outer side resin member located at an outer circumferential plane side. The inner side resin member is formed of a resin material that allows metal plating. Metal plating is applied on the inner circumferential plane of the inner side resin member to form a metal plate layer corresponding to a waveguide plane. The outer side resin member is formed of a resin material containing a coating composition to improve the aesthetic appearance. Accordingly, a feed horn of a satellite communication reception converter that can be fabricated readily and economically can be provided.

Abstract: A multiple bandwidth antenna assembly including a helical radiator having at least a first helical pitch and a second helical pitch, a core plug having a first axial piece and a second axial piece, and a first recessed pattern configured on the first axial piece to engage at least the first helical pitch and a second recessed pattern configured on the second axial piece to engage at least the second helical pitch.

Abstract: In an antenna apparatus for a vehicle, the antenna apparatus being provided on the vehicle in which at least a part of an outside plank panel of the vehicle is constituted by an outer panel made of a synthetic resin material, the antenna apparatus has at least one non-earthed type antenna, the non-earthed type antenna is provided with a first antenna element connected to an inner conductor of a coaxial cable via a first feeding point, and a second antenna element connected to an outer conductor of the coaxial cable via a second feeding point, and at least both the first and second antenna elements and both the first and second feeding points are arranged in a portion which is inside the outer panel made of the synthetic resin material and is apart from the earthed conductor on the part of the vehicle body, thereby it is possible to improve a receiving performance of a radio wave having a short wavelength, and can restrict an influence of a noise.

Abstract: A group of Double-Sided High-Tc Superconducting (HTS) Magnetic-Dipole Micro-Antennas is provided. The multi-resonant double-sided HTS magnetic dipole micro-antenna are fabricated using thin-film (?YBCO?3000 ?) YBCO material (with Tc?92 K). The substrate is a single LaAlO3 crystal (with the loss-tangent of tan ??10?5, ?r?24) with the thickness of ?LAO?508 ?m. Each antenna is comprised of a combination of co-centric loop and spiral structures, patterned on both sides of the substrate without ground plane. Due to their geometric structures, each antenna demonstrates a multi-resonant characteristic. The comparison between the overall dimensions of the device (22×22 mm2) and variation of the wavelength at resonances indicate a typical ratio of D/??10?2 between the largest loop diameter and the longest wavelength.

Abstract: This invention concerns a device comprises a fixing part having a horizontal fixing part for placing the radiation part thereon and a vertical fixing part connected perpendicularly to horizontal fixing part, and a supporting part spaced apart from the fixing part. The device further comprises a supporting part spaced apart from an outer lower end of the vertical fixing part by a predetermined distance for supporting the terminal part to prevent separation of the terminal part from contact parts of the mobile communication terminal or deformation of the radiation part against a pressure applied to the terminal part when the built-in antenna is mounted in the main body of the mobile communication terminal.

Abstract: An electrically small, planar ultra wide bandwidth (UWB) antenna is disclosed. The antenna has a conductive outer ground area that encompasses a tapered non-conducting clearance area, which surrounds a conductive inner driven area. The feed is unbalanced with the terminals are across the narrowest part of the non-conducting clearance area which is tapered to provide a low VSWR across ultra wide bandwidths exceeding 100%. The antenna can be arrayed in 1D and 2D on a single common substrate. Amplifiers can be readily mounted at the feed.

Abstract: A system for stabilizing two antennas on a mobile platform, the antennas including a first antenna associated with a first geo-stationary satellite and a second antenna associated with a second geo-stationary satellite, the system comprising an upper alignment system and a lower alignment system. The upper alignment system is configured for being a common support for the antennas. The upper alignment system has an intermediate element. The upper alignment system is configured for pointing the antennas relative to the intermediate element, such that the angular displacement between the antennas is matched with the angular displacement between the satellites. The lower alignment system is connected to the upper alignment system and the mobile platform. The lower alignment system is configured for maintaining the orientation of the intermediate element in order to compensate for rotation of the mobile platform, such that the antennas are maintained pointing toward their respective satellites.

Abstract: A collinear antenna segment is provided with a plurality of radiating elements and inter-element phasing sections arranged alternately on a singlesided elongated substrate. The segment has an operatively curved in-use configuration about a longitudinal axis running substantially along the length of the segment. In use, the inter-element phasing sections allow the radiating elements to radiate electromagnetic radiation substantially in phase over an intended range of frequencies. The segment may be arranged on a flexible substrate which can be operatively curved for insertion into a radome. Alternatively, the segment may be directly arranged on the curved inner surface of a radome.

Abstract: A rendering cost estimation method is provided for generating a rendering cost estimate that that is sufficiently close to an actual rendering cost that would be incurred if computer-generated images were actually rendered from a computer-graphics model. A plurality of cost factors that affect the actual rendering cost are identified. Representative information, including rendering cost estimation parameters that adequately characterize the cost factors, is derived from the computer-graphics model. The estimation parameters are combined with rendering cost estimation relationships that express the affect of the cost factors on the rendering cost. A rendering cost estimate is generated based on the estimation parameters derived from the computer-graphics model and the estimation relationships.

Abstract: An antenna assembly for mounting on a backstay of a sailboat. An insulative support apparatus includes a slotted center tube that can be forced over the backstay for mounting thereon. First and second outer tubes are attached on opposite sides of the center tube for holding first and second elongated radiators. Proximal ends of the radiators are electrically joined together and to a lead in-wire for connection to a receiver and/or transmitter. Distal ends of the radiators are secured at distal ends of the outer tubes by attachment to eyelets on the bottoms of plugs inserted into the distal ends of the outer tubes, which serve additionally to prevent water from entering the tubes. The outer tubes each include a water drainage channel to allow moisture accumulating to run out a bottom, proximal end of each tube.

Abstract: A shaped antenna element that radically reduces the physical size needed for resonance without the use of lossy loading elements, while at the same time allowing direct connection to a coaxial feeder. The element is composed of at least two sub-elements in close proximity to each other, coupled electrically to each other such that the radiation resistance of the composite element is increased substantially. The composite element can be used either as an antenna or part of an antenna that consists of multiple such elements in order to provide increased directivity.

Abstract: An antenna with first and second spaced radiating elements extending from a vertex at respective first ends and diverging from each other in a direction outward from the vertex to respective second ends. Each radiating element second end is connected to a first end of a terminating element through a coupler. The second end of each terminating element is connected to a common ground plane.

Abstract: A three-dimensional model management system wherein a hierarchical structure and data peculiar to a three-dimensional model created by three-dimensional CAD are excluded to display a configuration view screen showing a configuration close to that of an actual object. Attribute information acquiring unit of the three-dimensional model management system acquires part names, as attribute information, from a three-dimensional model stored in a storage device. Sorting unit sorts the acquired part names in accordance with a hierarchical structure which the three-dimensional model has. Display form setting unit makes settings such that, for example, dummy data which is used for the sake of convenience of design and has no substance is not displayed on screen. Editing unit edits the part names sorted by the sorting unit, in accordance with the settings made by the display form setting unit. Output unit supplies the part names edited by the editing unit to a display device to be displayed thereby.

Abstract: A diversity antenna apparatus for a portable wireless terminal is provided with a main body having a main board installed therein and a folder electrically connected to the main board by a flexible printed data cable so as to be rotatably opened from and closed into the main body. The antenna apparatus includes a first antenna protruding from first side of an upper end of the main body so as to perform a transmitting and receiving function and a second antenna installed on a second side of an upper end of the main board and separated from the first antenna so as to perform a diversity receiving function. The diversity antenna is separated from the antenna apparatus by a sufficient distance, thereby improving a diversity effect. Further, the diversity antenna is installed within a space in the main body of the terminal, thereby not requiring a structural change and being easily installed in the portable wireless terminal.

Abstract: Methods, and apparatus, including computer programs, implement techniques for generating a polygon from a bitmap object. Boundary pixels of the bitmap object are identified. A boundary pixel is an object pixel that shares an edge with a non-object pixel or a non-object pixel that shares an edge with an object pixel. All perimeter edge line segments are identified for each identified boundary pixel. A perimeter edge line segment is an edge line segment that separates an object pixel from a non-object pixel. The identified perimeter edge line segments are accumulated to define a polygon.

Abstract: A high radiation efficiency antenna system in a package is achieved by the provision of a Dielectric Resonator Package. A Dielectric resonator package comprises a dielectric body of the package forming a dielectric resonator that resonates at radio frequency and a feed substrate having an upper and a lower surface, a feed structure formed on the upper surface of the feed substrate, and RF circuitry mounted on the lower surface of the feed substrate. The feed substrate is attached to the dielectric body of the package from the side of the feed structure.

Abstract: An antenna system that permits the size of the ground plane to be reduced while mitigating the negative performance impacts normally associated with sub-optimal ground plane size. The antenna system comprises a ground plane, a radiating element and an isolated conductive structure for electromagnetically enclosing the radiating element. A first current on the radiating element induces a second current on the ground plane proximate the isolated conductive structure thereby inducing a third current on the isolated conductive structure opposing the second current wherein the third current creates an electromagnetic field.