Abstract: A directional receiver is provided for an aircraft collision avoidance system. The receiver may include input channels that are configured to receive uncompressed linear analog signals from antenna elements that are arranged within a predetermined antenna element geometry. The receiver may further include Analog to Digital (A/D) converter modules, a quadrature converter module and a combiner module. The A/D converter modules can convert each of the analog signals to uncompressed linear digital data and output separate digital data streams that correspond to each of the input channels. The quadrature converter module can mix the digital data streams with corresponding digital reference signals to produce digital In-phase (I) and Quadrature (Q) streams.

Abstract: A radar device includes a generation unit, a transmission unit, and a control unit. The generation unit selectively generates a set of a plurality of transmission signals whose center frequencies are different from one another within an assigned frequency band. The transmission unit emits the transmission signals. The control unit controls the generation unit so as to vary the center frequencies for each emission of the transmission signals.

Abstract: A method reduces errors in two-way ranging between transceivers due to a frequency offset. A first transceiver measures a time CA1 between, transmitting a request frame and receiving a reply frame, and a time CA2 between receiving a first information bit of the reply frame and receiving a last information bit of the reply frame. A second transceiver measures a time CB2 between receiving the request frame and transmitting the last information bit of the reply frame, and a time CB1 between receiving a first information bit of the request frame and a last information bit of the request frame. A correction factor ? C = C B ? ? 1 C A ? ? 2 is applied according to C ^ B ? ? 2 = C B ? ? 2 ? o , and the one-way time is T ^ i = C A ? ? 1 - C ^ B ? ? 2 2 ? T i , where Ti is an idea period of the clocks of the transceivers.

Abstract: Methods for suppressing cross-track clutter in a sounding radar utilize polarimetric selectivity in two ways: (1) transmitting full-beam circular polarization and separating the desired signal of interest from the clutter based on the signal and clutter having different polarizations, and (2) transmitting and receiving circular polarization at the radar's nadir and elliptical polarization at the radar's off-nadir regions and filtering out the elliptical polarization.

Abstract: Embodiments of the invention are concerned with improvements to Doppler radar systems, and are suitable for use with frequency scanning radar systems. In one arrangement the improvements are embodied in a frequency scanning radar controller for use in controlling a frequency generator; the frequency generator is arranged to generate a plurality of sets of signals, each set of signals having a different characteristic frequency and comprising a plurality of signals transmitted at a selected rate, and the radar controller is arranged to select the rate in dependence on the characteristic frequency. The invention can be embodied in a pulsed radar, for which each set of signals comprises a set of pulsed signals and each pulsed signal is repeated at a selected repetition rate. The radar controller is then arranged to modify the repetition rate in dependence on the characteristic frequency of the pulsed signal.

Abstract: A method and system for optimizing a global positioning system. In one embodiment, the method includes receiving an indication of at least one change in coordinate attributes, determining a plurality of cost and transaction rules based on at least one user preference, and processing a plurality coordinate transactions based on the least one cost and transaction rule.

Abstract: A method of generating post-mission position and orientation data comprises generating position and orientation data representing positions and orientations of a mobile platform, based on global navigation satellite system (GNSS) data and inertial navigation system (INS) data acquired during a data acquisition period by the mobile platform, using a network real-time kinematic (RTK) subsystem to generate correction data associated with the data acquisition period, and correcting the position and orientation data based on the correction data. The RTK subsystem may implement a virtual reference station (VRS) technique to generate the correction data.

Abstract: According to the present invention, each navigation satellite (1) verifies in an autonomous manner the essential information that it transmits to the users, by virtue of unidirectional links received from reference beacons (11).

Abstract: A positioning system wherein radio waves from a GPS satellite (4) are received by a reference station (1), the absolute position of which is already known, and a plurality of mobile stations (3) to perform relative positioning among particular stations, thereby determining the positions of the mobile stations (3). At least one of the mobile stations (3) is disposed such that a baseline limit length allowing relative positioning relative to the reference station (1) is exceeded, and the intervals between particular mobile stations (3) are shorter than the baseline limit length allowing relative positioning. Each of the stations (1, 3) is equipped with a GPS receiver (11, 21) that receives the radio waves from the GPS satellite (4), and further equipped with a wireless communication apparatus (12, 22) that transmits/receives data to/from a particular station.

Abstract: A radio device that is capable of positioning itself within a broadcast radio system includes a radio receiver operable to receive a plurality of broadcast radio signals, each broadcast from a respective one of a plurality of broadcast radio signal sources, and a GPS receiver coupled to receive a broadcast parameter determined using the broadcast radio signals and operable to calculate a GPS location of the radio device using the broadcast parameter.

Abstract: A system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system including a processor, a memory coupled to the processor and including computer-readable instructions configured to, when executed by the processor, cause the processor to receive the non-GPS information, determine an available pseudo-random noise (PRN) code, spread the non-GPS information using the available PRN code to provide a spread signal, modulate a GPS carrier frequency using the spread signal to produce a GPS compatible signal, and a terrestrial transmitter configured to transmit the GPS compatible signal.

Abstract: When transmitting position/time information calculated by means of a GPS function to a server apparatus, authentication is carried out with the server apparatus. The position/time information may be certified as legitimate measured by a portable apparatus with a GPS reception function employed by a user. When transmitting information related to the position and the time acquired from a portable phone terminal having the GPS function and a network function by means of the GPS function to the server apparatus, authentication is carried out between the portable phone terminal and the server apparatus. The position/time information is transmitted to the server apparatus, only if the server apparatus is authenticated as a legitimate counterpart for connection. A secret key holding section is provided for holding different secret keys for different apparatuses.

Abstract: A method for recording a position of at least one component in a location system of a control system of an industrial facility for an industrial process. A model of the facility is created, including position coordinates for major parts of the facility. The model is stored in a location system storage. A component is identified. A mobile information processing device is placed adjacent the component and position coordinates are detected for the mobile information processing device. Identification information of the component and position coordinates of the mobile information processing device are stored in the location system storage.

Abstract: A data logger for a monitoring sports which includes an accelerometer, a gyro sensor to sense angular displacement, a GPS unit to sense position and velocity, a magnetometer to sense direction of movement, a heart rate monitor, and a controller programmed to manipulate the data and provide a display of the heart rate, speed, and other sport parameters. The data can be stored or transmitted to a remote computer for use by the coach. The device is useful in football codes, athletics, swimming, snow sports and cycling.

Abstract: Embodiments of the invention are concerned with a radar system, and relates specifically to scanning radar systems that are suitable for detecting and monitoring ground-based targets.

Abstract: Embodiments of the invention are concerned with frequency scanning antennas for transceiving radio frequency energy for use in detecting and monitoring ground-based targets. In one arrangement the frequency scanning antenna is embodied as a structure that is capable of steering a radio frequency beam to a plurality of different angles about the antenna structure: the antenna structure comprises at least two array antennas and a controller for controlling input of energy to the two array antennas, and the array antennas are disposed within the antenna structure such that the antenna structure is capable of steering a beam to a first angle using one of said two array antennas and of steering a beam to a second angle, different to said first angle, using the other of said two array antennas.

Abstract: An antenna common to a plurality of frequencies in which a wide band of a UWB system can be covered while suppressing interference with other systems. The antenna comprises a plurality of element part conductors, coupling conductors for coupling them electrically, and a feeder for coupling one element part conductor electrically with a feeder part capable of feeding to that element part conductor, wherein respective element part conductors are concatenated sequentially by the coupling conductors. The element part conductor has a shape substantially symmetric to a line connecting the coupling conductors or the parts coupled with the feeder. Each coupling conductor is arranged substantially linearly and the plane part of each planar conductor is arranged substantially vertically.

Abstract: This invention provides a shelf antenna system for radio frequency identification (RFID) applications, the shelf antenna system comprises a plurality of substantially horizontal shelves, and a distributed antenna having a single feed terminal and a plurality of radiating elements, the distributed antenna being mounted next to the plurality of substantially horizontal shelves, wherein the entire shelf space of the plurality of substantially horizontal shelves are covered by radiations from the distributed antenna.

Abstract: In general, in one aspect, the disclosure describes a semiconductor antenna having a plurality of antenna elements and a switching network formed in the same semiconductor die. The switching network is to control activation of the antenna elements.

Abstract: Exemplary embodiments are provided of RFID antenna assemblies having folded patch-antenna structures and that are configured with circular polarization or dual linear polarization. An antenna assembly may generally include two folded patch-antenna structures oriented generally perpendicularly to each other. Each folded patch may create a linear polarization wave. When each folded patch is fed independently, the antenna assembly radiates two independent waves that are perpendicularly polarized to each other, therefore providing a dual polarized antenna. In other embodiments, the antenna assembly may include two folded patch-antenna structures again oriented generally perpendicularly to each other. By feeding each folded patch with a 90-degree phase delay between them, a circular polarization wave is radiated. A power divider network may be used to feed the two folded patches with the 90-degree phase delay. The two folded patches may be integrated so as to form a cavity or housing for a printed circuit board.

Abstract: The invention concerns a meandered antennae comprising: a first meandered conductive element including a plurality of arms, two consecutive arms forming a meander; a second conductive elements forming with the first conductive elements a radiating two-wired line, the second conductive element including a plurality of arms engaged each between two consecutive arms of the first conductive element. The antenna is characterized in that it is designed to operate without ground element, in particular without ground plane.

Abstract: An antenna module includes a substrate; a ground element disposed on the substrate; a first antenna element disposed on the substrate; and a second antenna element disposed on the substrate. The first antenna element and the second antenna element are, respectively, capable of transmitting radio waves having a first polarization direction and a second polarization direction unparallel to each other. A spacing between a perimeter of the ground element and the first antenna element increases as a function of increasing distance from the second antenna element. A spacing between the perimeter of the ground element and the second antenna element increases as a function of increasing distance from the first antenna element.

Abstract: An antenna structure for a wireless communication device including a substrate having a first surface that supports an electronic component and a second surface opposite to the first surface. The antenna structure includes a first surface pattern formed on the first surface of the substrate. A second surface pattern is formed on the second surface of the substrate. The second surface pattern is at least partially separated from the first surface pattern in a direction perpendicular to a thicknesswise direction of the substrate.

Abstract: A planar antenna having top and bottom nominally planar conductors that are oriented substantially planarly parallel and form an antenna interior region. The top conductor includes two radiating conductors each having an inner end and a distal end. A feed extends from outside of the planar antenna, through the antenna interior region, and to the top conductor. The feed includes a balun and has a first feed conductor that connects to the inner end of the first radiating conductor and a second feed conductor that connects to the inner end of the second radiating conductor.

Abstract: A low cost and multi-featured antenna is disclosed. The antenna employs a radiating element mounted to a ground plane and having first and second branches spaced above the ground plane forming a generally L shaped planar radiating structure. The antenna can be either linear or circular polarization, and can be either single band or dual band, and only one feeding port is needed to obtain circular polarization. The antenna can be easily applied to various frequency bands.

Abstract: A film antenna comprises a base film formed of an insulating material; and first and second antenna elements of film-like electric conductors formed on the base film, wherein each of the first and second antenna elements is a planar shape in which two end faces from a feed point to a tip have two different lengths or a planar shape in which an end face and a diagonal line from a feed point to a tip have two different lengths, a core wire of a coaxial cable is connected to the first antenna element at the feed point, an external conductor of the coaxial cable is connected to the second antenna element at the feed point, and the first and second antenna elements have an area as a capacitor for performing impedance matching.

Abstract: An electronic device is described which includes multiple first antennas; at least one second antenna configured to be used in a different wireless communication system therefrom; a display panel for displaying an image; a panel casing including for covering the display panel, including the display panel; a placement frame having an upper-face portion disposed on the outer perimeter of the panel casing, and extended horizontally, and a pair of side-face portions, each protruding from a different side-edge portion of the upper-face portion in the direction orthogonal thereto; and an outer frame for covering the outer perimeter and the placement frame of the display panel from the display surface side of the display panel; wherein at least one first antenna is disposed on each of the upper-face portion and one side-face portion of the placement frame; and wherein at least one second antenna is disposed on the upper-face portion or the other side-face portion of the placement frame.

Abstract: A method of determining at least one characteristic parameter of a resonant structure (4) comprising the following steps: firstly placing the resonant structure (4) at a location, said location being located in the far field of a first antenna (2) and in the far field of a second antenna (5), and secondly emitting electromagnetic waves (EEW) with different frequencies in a given frequency range by means of the first antenna (2) such that the emitted electromagnetic waves (EEW) are modified by the resonant structure (4) and modified electromagnetic waves (MEW) are achieved, and thirdly determining during a first determining step a first electric power-value being representative of the power associated with the emitted electromagnetic waves(EEW), and fourthly receiving the generated modified electromagnetic waves (MEW) by means of the second antenna (5) and fifthly determining during a second determining step a second electric power-value being representative of the power associated with the received modified e

Abstract: The invention relates to an antenna (3) which is used for communication purposes (transmission and/or reception) in a motor vehicle (7), particularly in a passenger car. According to the invention, the antenna (3) is arranged inside the vehicle (7) in a place which is protected against crashes, thereby enabling provision of sufficient antenna (3) radiation required for communication purposes, in the event of a crash.

Abstract: In an antenna configuration (3) having a first antenna arm (4) and having a second antenna arm (5), the two longitudinal directions (10, 11) of the two antenna arms (4, 5) enclose an acute opening angle (?) with one another, wherein the acute opening angle (?) has a value of between 15° and 90° and preferably between 25° and 45°.

Abstract: Described is a technology by which an antenna circuit is modified by changing its loading element or elements to thereby provide a particular polar radiation/gain pattern. An antenna loading element is coupled to an antenna (e.g., a chip antenna of a mobile device, a printed copper monopole antenna, a meander line antenna, a Planar Inverted-F (type) Antenna (PIFA) or the like), and includes at least one segment that is not substantially parallel to the chip antenna. For example, in one implementation, the antenna element includes segments that are substantially orthogonal to a top-loaded chip antenna. The resulting antenna/antenna circuit modifies the polar radiation pattern, such that, for example, a mobile device can achieve more optimum gain when oriented for typical usage. One or more other segments may be bent to extend at another angle or angles to achieve a particular polar gain pattern.

Abstract: A gradient index lens for microwave radiation. The lens includes a plurality of electric field coupled resonators wherein each resonator has a resonant frequency. The resonators are arranged in a planar array having spaced apart side edges and spaced apart top and bottom edges. The resonant frequency of the resonators varies between at least two of the spaced edges of the array in accordance with the desired properties of the lens.

Abstract: The present invention provides a remote antenna system employing digital imaging means by which the operator can view both the antenna pointing data and the coverage landscape from the antenna radome perspective. The present invention also provides a method for antenna positioning data acquisition and positioning control employing remotely acquired image data.

Abstract: A slot antenna apparatus includes a grounding conductor having an outer edge including a first portion facing a radiation direction and a second portion other than the first portion, a one-end-open feed slot formed in the grounding conductor along the radiation direction such that an open end is provided at a center of the first portion, and a feed line including a strip conductor close to the grounding conductor and intersecting with the feed slot at at least a part thereof to feed a radio frequency signal to the feed slot. The slot antenna apparatus further comprises at least one one-end-open parasitic slot having an electrical length equivalent to one-quarter effective wavelength in a certain stop band, the parasitic slot having an open end at the second portion, and being formed in the grounding conductor so as not to intersect with the feed line.

Abstract: With a differential feed line 103c, open-ended slot resonators 601, 603, 605, and 607 are allowed to operate in pair, a slot length of each slot resonator corresponding to a ¼ effective wavelength during operation. Slot resonators which are excited out-of-phase with an equal amplitude are allowed to appear within the circuitry. Thus, positioning condition of the open end points of the selective radiation portions 601b, 601c, 603b, 603c, 605b, and 607b in the respective slot resonators is dynamically switched.

Abstract: Implementations related to configurable strip-line quarter wavelength and/or antenna structures are described herein.

Abstract: The hybrid antenna includes a spiral antenna, e.g. a log spiral antenna, and a patch array layer adjacent to the spiral antenna and including a passive periodic patch array of conductive patch elements. A conductive ground plane may be adjacent to the patch array layer, and a dielectric layer may be between the conductive ground plane and the patch array. The spiral antenna may include an upper antenna arm, a lower antenna arm and a dielectric sheet therebetween. Each of the upper and lower antenna arms may be a printed planar conductive trace that is wider at a distal end thereof with respect to a center of the log spiral antenna. The patch or periodic array layer operates in conjunction with the ground plane to couple energy into the spiral antenna and thereby improve low frequency antenna efficiency while maintaining electrically small dimensions.

Abstract: A digitally controlled tunable impedance surface. The tunable impedance surface is of the type having a two dimensional array of conducting plates disposed adjacent a dielectric medium; a ground plane spaced from the two dimensional array of conducting plates, the dielectric medium occurring at least between and separating the two dimensional array of conducting plates and the ground plane; and conductors coupling alternating ones of the conducting plates to the ground plane. A plurality of voltage controlled capacitors are coupled between adjacent plates in the two dimensional array of conducting plates and an array of digital to analog converters are disposed preferably on or near the ground plane. Each digital to analog converter has analog output voltage pads coupled to selected ones of adjacent conducting plates and has at least a digital input for receiving digital words representing at least in part analog voltages to be applied to the selected ones of the adjacent conducting plates.

Abstract: An imaging system, comprising an image source and a plurality of microtile units for generating respective portions of an image, each microtile unit including a plurality of coupling mechanisms for connection to a plurality of other microtile units such that the microtile units may be arranged in multiple geometrical configurations, and each microtile unit including circuitry for communication with the other microtile units to control generation of each respective portion of the image.

Abstract: A multi-monitor display system is described having an arm adapted for supporting a plurality of monitors containing display screens. The system also includes a column for supporting the arm, a monitor controller assembly for electronically controlling images displayed on the screens, and a graphics assembly for sending signals to the monitor controller assembly to produce the images. The system is used in conjunction with a central processor located in a computer housing. The monitor controller assembly is disposed outside of the monitors and/or the graphics assembly is disposed outside the computer housing.

Abstract: Modular displays are made up of arrays of modules that include light sources and light modulators. The modules may include control circuits that perform some image processing functions. The modules may illuminate a screen directly or may include optical systems that project light onto a screen.

Abstract: A vehicle display system includes a display that includes first and second display areas. The first display area displays a plurality of first icons in a first color indicative of a first warning. The second display area displays a plurality of second icons in a second color indicative of a second warning that is different than the first color. An icon library includes the pluralities of first and second Icons. A command module selects from the pluralities of first and second icons based on one or more vehicle conditions. A first control module controls the first display area to display one of the first plurality of icons, at a time based on the selections from the command module. A second control module controls the second display area to display one of the second plurality of icons at a time based on the selections from the command module.

Abstract: A display apparatus includes a capacitor which is provided on each of the pixels and stores the data signal while a first terminal of the capacitor is connected to a control electrode of the driving transistor, an application voltage generating unit which generates an application voltage to a second terminal of the capacitor, and a capacitor voltage adjusting unit which adjusts an application voltage to the second terminal of the capacitor.

Abstract: Image display systems comprising a first pixel, a second pixel, a scan line, a first data line, and a second data line. In the first pixel, a first transistor is coupled to a first storage capacitor via a first pixel electrode. In the second pixel, a second transistor is coupled to a second storage capacitor via a second pixel electrode. The conductance of the first and second transistors is simultaneously controlled by a scan signal transmitted by the scan line. In a first time interval, the first data line transmits a voltage data to the first pixel electrode via the first transistor. In a second time interval, the second data line transmits the voltage data to the second pixel electrode via the second transistor. The first storage capacitor is designed to generate a proper feedthrough voltage at the first pixel electrode to compensate for a voltage coupling shift at the first pixel electrode that is generated during the second time interval because of the voltage variation at the second pixel electrode.

Abstract: One field is formed of a plurality of sub-fields, and each one of the sub-fields includes an initializing period, addressing period, and sustained period. The sub-field is one of an entire-cell initialization sub-field or a selective-cell initialization sub-field. When the entire initialization sub-field is switched to the selective one or vice versa, an initializing voltage which generates initializing discharge in the entire initialization sub-field is controlled. This control allows varying the number of the entire initializations and stabilizing address discharge in a plasma display panel, and at the same time, making the black luminance inconspicuous for improving the picture quality.

Abstract: A plasma display panel is disclosed. The plasma display panel includes a front substrate, a rear substrate positioned to be opposite to the front substrate, a barrier rib positioned between the front substrate and the rear substrate, and a seal layer positioned between the front substrate and the rear substrate. The seal layer includes a plurality of beads, and a size of the bead is larger than a height of the barrier rib.

Abstract: In a plasma display device, one frame is divided into a plurality of subfields, each having a weight, a first subfield to which more than a reference number of sustain pulses are allocated among the plurality of subfields is detected, at least N first sustain pulses are applied to the plasma display device during a sustain period of the first subfield, and at least M second sustain pulses are applied to the plasma display device during a sustain period of the first subfield. The first and second sustain pulses respectively have a high level voltage and a low level voltage, and a first period during which the first sustain pulse is changed from the low level voltage to the high level voltage is longer than a second period during which the second sustain pulse is changed from the low level voltage to the high level voltage.

Abstract: A plasma display device and a method for driving the plasma display device are provided, wherein deterioration in image quality in a period immediately after power-on can be restrained while improving dark contrast. When driving a PDP, by applying various drive pulses, that includes a phosphor layer containing a secondary electron emissive material in respective discharge cells, drive pulses having different pulse waveforms are generated in a period from power-on of the plasma display device to after a lapse of a predetermined period of time, and in a period after a lapse of the predetermined period of time.

Abstract: A problem is to be solved that there is to be provided a plasma display device capable of generating driving signals with less variation in delay time and without carrying out any phase adjustment. There is provided a plasma display device including; a first display electrode; a second display electrode adapted to cause a discharge to occur between the first display electrode and the second display electrode; a first display electrode drive circuit for applying a discharge voltage to the first display electrode; and a second display electrode drive circuit for applying a discharge voltage to the second display electrode. The first display electrode drive circuit has a first output element for supplying a first electric potential to the first display electrode in accordance with a first input signal which is inputted by using a transformer.

Abstract: When a sustain discharge corresponding to the display light is repeatedly produced by applying a drive pulse to a PDP which includes a fluorescent layer in the discharge cells, the drive pulse waveform is adjusted in accordance with the total number of sustain discharges. Furthermore, an auxiliary pulse of the same polarity as that of the sustain pulse is applied to the column electrodes in a period from after the application of a final scan pulse in the address process until the application of a leading sustain pulse. A period from the final sustain pulse until the time of the application of the leading pixel data pulse which is applied first in the write address process of the one subfield of the subsequent frame is made 1 millisecond (msec) or more.