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644 results about "Radiation mode" patented technology
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For an optical fiber or waveguide, a radiation mode or unbound mode is a mode which is not confined by the fiber core. Such a mode has fields that are transversely oscillatory everywhere external to the waveguide, and exists even at the limit of zero wavelength.
RFID device, system and method of operation including a hybrid backscatter-based RFID tag protocol compatible with RFID, bluetooth and/or IEEE 802.11x infrastructure
ActiveUS20030104848A1Near-field transmissionMemory record carrier reading problemsTransceiverAntenna impedance
An RFID system includes a hybrid backscatter-based RFID tag protocol-compatible with existing 802.11x / Bluetooth Standards as well as RFID standards. The tag is linked to a multi-protocol Interrogator via a generated RF Continuous Wave (CW) field. The tag includes an antenna coupled to an RFID and a Bluetooth / 802.11x transceiver section. A Protocol Processor services RFID and transceiver sections and is coupled to the antenna via a backscatter switch. The Interrogator can switch the tag to an RFID backscatter radiation mode where the processor switches the antenna impedance to reflect the CW signal. For transceiver operation the processor switches antenna impedance in synchronization with a frame organized bit stream. For reception, the RFID section utilizes demodulation techniques, typically Amplitude Shift Keying (ASK), and provides a wake up mode within a predetermined distance of the Interrogator. The transceiver may operate in a backscatter or regular mode as directed by an Access Point.
Owner:GOOGLE TECH HLDG LLC
RFID device, system and method of operation including a hybrid backscatter-based RFID tag protocol compatible with RFID, bluetooth and/or IEEE 802.11x infrastructure
ActiveUS7215976B2Near-field transmissionMemory record carrier reading problemsTransceiverAntenna impedance
Owner:GOOGLE TECHNOLOGY HOLDINGS LLC
Dipole antenna of RF chip
ActiveCN101740862AReduce the impactImproving Impedance MatchingRadiating elements structural formsSlot antennasImpedance matchingDipole antenna
Owner:KUANG CHI INST OF ADVANCED TECH
Dynamically adjusting width of beam based on altitude
ActiveCN105453340AAntenna adaptation in movable bodiesHeight/levelling measurementRadiation modeRadiation pattern
An antenna includes a radiator and a reflector and has a radiation pattern that is based at least in part on a separation distance between the radiator and the reflector. The antenna includes a linkage configured to adjust the separation distance based at least in part on the altitude of the antenna. The resulting radiation pattern can be dynamically adjusted based on altitude of the antenna such that, while the antenna is aloft and the antenna is ground-facing, variations in geographic boundaries and intensity of the radiation received at ground level are at least partially compensated for by the dynamic adjustments to the radiation pattern.
Owner:SOFTBANK CORP
Solid state lighting device with improved thermal management, improved power management, adjustable intensity, and interchangable lenses
InactiveUS20060098440A1Easy to mass produceEasily adjustable light emission patternPoint-like light sourcePortable electric lightingLuminous intensityEngineering
A solid state (light emitting diode) lamp in numerous configurations have improved thermal management by providing a direct thermal pathway from the plurality of LED chips to the threaded screw base (standard 100˜240 VAC lamp socket), or power coupling. The control circuitry is disposed opposite the printed circuit board and LED chips with respect to the heat sink so that the heat sink is interposed between the printed circuit board and the control circuitry. The LED chips are powered using a high voltage / high current configuration. The light radiation pattern is infinitely adjustable (very wide through very narrow) via a system of easily interchangeable lenses. The solid state lamps can be mass produced rapidly at significantly lower cost with very high luminous intensity. ESD protection may be included to protect the LED chips from electrostatic discharge damage.
Owner:NXGEN TECH
Wideband dual polarized base station antenna offering optimized horizontal beam radiation patterns and variable vertical beam tilt
ActiveUS6924776B2Improved radiation patternImprove front-to-back ratioLogperiodic antennasAntenna supports/mountingsRadiation patternPhysics
Owner:COMMSCOPE TECH LLC
Digital integrated antenna array for enhancing coverage and capacity of a wireless network
InactiveUS20110150050A1Increase freedomReduced flexibilityTransmitters monitoringSecret communicationTransceiverWireless mesh network
An embodiment of the invention relates to a digital integrated antenna array system having one or more antenna modules, one or more transceiver modules each having one or more signal processing paths for transmitting data to or receiving data from the one or more antenna modules, a signal processing unit able to process data for each the one or more signal processing paths of the one or more transceiver modules such that the data transmitted from the one or more transceiver modules to the one or more antenna modules is radiated by the one or more antenna modules into one or more radiation patterns.
Owner:VIAVI SOLUTIONS INC
Electrosurgical devices with directional radiation pattern
Owner:TYCO HEALTHCARE GRP LP
Electrosurgical Devices with Directional Radiation Pattern
A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding the chamber. An antenna assembly is disposed in the chamber. The elongated body member also includes an opening in the body wall to allow energy radiated from the antenna assembly to transfer into the target volume of tissue.
Owner:TYCO HEALTHCARE GRP LP
Illumination device comprising a light source and a light-guide
ActiveUS20090231878A1Optimizing light pathEconomical use of spacePoint-like light sourceOptical light guidesLight guideRadiation mode
Proposed is an illumination device (1), comprising a semiconductor light source (10) for generating light, a primary optical system (20) for feeding the light to a secondary optical system (30), which is provided for radiating the light and for achieving a desired radiation pattern. The semiconductor light source may comprise LEDs and / or Laser-Diodes. The primary optical system comprises a light-guide with a mirrored end-face (24) and an out-coupling structure (25) for directing light into the secondary optical system. The mirrored end-face optically folds the light-guide, effectively extending the length over which the light is advantageously homogenized inside the light guide. Furthermore, optically folding the light-guide makes more economical use of the space inside the secondary optical system. This is especially advantageous when designing an LED based retrofit for existing form factors of halogen based illumination devices.
Owner:SIGNIFY HLDG BV
Adjustment of Radiation Patterns Utilizing a Position Sensor
ActiveUS20100231473A1Error detection/prevention using signal quality detectorAntenna supports/mountingsData rateRadiation mode
A device for a wireless RF link to a remote receiving device can radiate at different radiation patterns in response to detecting a change in the device position. As the device is moved, displaced, or re-positioned, a position sensor in the device detects the change in position and provides position information to a processor. The processor receives the position information from the position sensor, selects an antenna configuration and physical data rate based on the position information, and provides an RF signal associated with the selected antenna configuration through the antenna elements of the selected antenna configuration.
Owner:ARRIS ENTERPRISES LLC
Selective radiation refrigeration coating and composite material and application method thereof
PendingCN110317521AHigh mechanical strengthGood weather resistanceLuminescent paintsBuild-up roofsUltraviolet lightsReflectivity
The invention discloses a selective radiation refrigeration coating and a composite material and application method thereof. The selective radiation refrigeration coating comprises a radiation refrigeration function layer with special structure particle filler. The radiation refrigeration function layer is used for reflecting ultraviolet light and / or visible light and / or near infrared light in sunlight and emitting heat through an atmosphere window in an infrared radiation mode, the radiation refrigeration function layer comprises a rodlike structure particle filler and radiation refrigerationfunction layer resin, and the particle filler is distributed in the radiation refrigeration function layer resin. According to the coating, the reflectivity for solar spectrum energy is larger than or equal to 80%, the reflectivity of the atmosphere window is larger than or equal to 80%, and the radiation refrigeration power being 100 W / m<2> or above can be supplied under the normal temperature.The coating is high in mechanical strength and good in weather resistance and has the quite high practical value.
Owner:NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD +1
Adjustment of radiation patterns utilizing a position sensor
ActiveUS8217843B2Error detection/prevention using signal quality detectorAntenna supports/mountingsData rateRadiation mode
Owner:ARRIS ENTERPRISES LLC
Wideband dual polarized base station antenna offering optimized horizontal beam radiation patterns and variable vertical beam tilt
ActiveUS20050001778A1Improves horizontal plane radiation patternIncreased horizontal pattern front-to-back ratioLogperiodic antennasAntenna supports/mountingsRadiation modeRoll-off
A dual polarized variable beam tilt antenna (10) having a plurality of offset element trays (12) each supporting pairs of dipole elements (14) to orient the dipole element pattern boresight at a downtilt. The maximum squint level of the antenna is a consistent downtilt off of boresight and which is at the midpoint of the antenna tilt range. The antenna provides a high roll-off radiation pattern through the use of Yagi dipole elements configured in this arrangement, having a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, and is operable over an expanded frequency range.
Owner:COMMSCOPE TECH LLC
Vehicle headlamp
InactiveUS6891333B2Well formedEasy to shapePoint-like light sourcePortable electric lightingLuminous intensityRadiation mode
A vehicle headlamp is constituted to have a plurality of lamp units having light-emitting diodes as light sources. At that time, three types of lamp units of different radiation modes; that is, a projector-type lamp unit, direct-projection-type lamp units, and a reflection-type lamp unit, are used as the plurality of lamp units. As a result, a low-beam light distribution pattern obtained as a merged light distribution pattern formed from the light rays output from these three types of lamp units can be readily formed in a desired pattern geometry and a desired distribution of luminous intensity.
Owner:KOITO MFG CO LTD
Electronic alignment using signature emissions for backhaul radios
A backhaul radio is disclosed that includes one or more antenna structures collectively having a plurality of selectable radiation patterns for detecting alignment signals; one or more receivers configured to receive the alignment signals from the one or more antenna structures and provide received signals; one or more processors for processing the received signals to determine signal properties, wherein at least one of the one or more processors are coupled to at least one of the one or more receivers to receive said received signals; and an interface to couple at least one of the one or more processors to an alignment assisting device. The alignment assisting device coordinates between the backhaul radio and the second backhaul radio during the alignment process. The alignment assisting device further provides an indication of an improved alignment adjustment to a user of the alignment assisting device.
Owner:COMS IP HLDG LLC
Compact antenna with directed radiation pattern
Owner:WJ COMM
Stacked three dimensional photonic crystal, light emitting device, and image display apparatus
InactiveUS7462873B2Laser optical resonator constructionSemiconductor laser arrangementsPhotonic bandgapPhotonics
Provided is a light emitting structure which can emit light having a plurality of wavelength distributions from a single light emitting structure, can be integrated at high density, and can control a radiation mode pattern of radiation light and polarization thereof. A stacked three-dimensional photonic crystal is composed of a plurality of three-dimensional photonic crystals having photonic band gaps different from one another, which are stacked. Each of the plurality of three-dimensional photonic crystals includes a resonator in which a point defect is formed.
Owner:CANON KK
Coverage optimisation for wireless networks
ActiveUS20100091745A1Load balancingNetwork congestion can be easedPower managementError preventionRadiation modeEngineering
In a wireless network comprising access points deployed within a designated zone of coverage, the radio frequency field strength resulting from radiation from the access points is optimised as a function of location by means of control of the transmission power and / or radiation pattern of the access points in response to measurements from sensors at defined locations that measure received signal power, the received power being related to radio frequency field strength. Sensors may be deployed within the designated zone of coverage, at the edge of the zone and / or outside the zone and optimisation of the transmission parameters of the access points in terms of transmission power and / or radiation pattern is carried out taking into account the location of the sensors in addition to the received power at the sensors.
Owner:AVAYA INC
Stacked three dimensional photonic crystal, light emitting device, and image display apparatus
InactiveUS20050238310A1Laser optical resonator constructionSemiconductor laser arrangementsHigh densityPhotonic bandgap
Provided is a light emitting structure which can emit light having a plurality of wavelength distributions from a single light emitting structure, can be integrated at high density, and can control a radiation mode pattern of radiation light and polarization thereof. A stacked three-dimensional photonic crystal is composed of a plurality of three-dimensional photonic crystals having photonic band gaps different from one another, which are stacked. Each of the plurality of three-dimensional photonic crystals includes a resonator in which a point defect is formed.
Owner:CANON KK
Spatially Diverse Antennas for a Headset Computer
ActiveUS20140187179A1Reduces RF lossReduces RF lossesAntenna supports/mountingsAntenna adaptation in movable bodiesRadiation modeEngineering
The invention presented relates to wireless handsfree head worn headset computing devices including a microdisplay device and spatially diverse antenna system. The spatially diverse antenna system provides an effective headset computing device radiation pattern that enables arbitrary user movement and promotes freedom of mobility. Disclosed is a headset computing device including a head worn frame having a profile relatively low in height with respect to a user's head, the user's head creating a RF shadow region along the headset profile by blocking line-of-sight RF propagation paths, the headset includes two or more antennas integrated with the headset frame to sufficiently maintained its low profile. Each antenna has a radiation pattern and are collectively arranged to form an omnidirectional radiation pattern, where at least a first radiation pattern provides coverage in the line-of-sight propagation path while the at least second radiation antenna pattern is in the RF shadow region.
Owner:KOPIN CORPORATION
Antenna system optimized for siso and MIMO operation
ActiveUS20130109449A1Improve performanceImprove antenna performanceSpatial transmit diversitySubstation equipmentCommunications systemRadiation mode
An active antenna system and algorithm is described that provides for improved performance from LTE communication systems operating in Category 1 mode, where one antenna is used. For the LTE SISO case (category 1), a modal antenna capable of generating multiple radiation patterns will provide improved throughput due to improved resistance to fading. Modal (Null Steering) antenna technology is implemented in a multi-antenna system to provide for single and multiple antenna operation wherein one or more antennas have two or more radiation modes. An algorithm has been developed that determines when to switch from SISO to MIMO operation.
Owner:KYOCERA AVX COMPONENTS (SAN DIEGO) INC
SAR reduction architecture and technique for wireless devices
A modal antenna is proposed that provides for dynamic tuning and optimization of antenna system parameters for SAR (Specific Absorption Rate) management in mobile wireless devices. A modular approach is described where the radiator and active components are integrated into a module, allowing the fixed radiator to be used across multiple wireless products and form factors. Multiple radiation modes can be generated by a single antenna structure with one or several of the modes designed to minimize SAR while maintaining efficient communication link performance. Proximity sensors or other sensors provide indicators to determine when mode selection is necessary.
Owner:KYOCERA AVX COMPONENTS (SAN DIEGO) INC
Radiation refrigeration fiber, preparation method thereof and application of fiber
ActiveCN110685031APerformance is not affectedGuaranteed breathableMonocomponent polyolefin artificial filamentYarnFiberEmissivity
The invention relates to a radiation refrigeration fiber, a preparation method thereof and an application of the fiber. The radiation refrigeration fiber comprises a base and functional fillers fixedly distributed in the base, the mass percent of the functional fillers in the radiation refrigeration fiber is 1%-17%, the linear density of the radiation refrigeration fiber is 0.3dtex-10dtex, the radiation refrigeration fiber can reflect visible light and near-infrared light, and heat is emitted by an atmospheric window in an infrared radiation mode. The visible light and near-infrared light reflectivity of a radiation refrigeration fabric prepared from the radiation refrigeration fiber is higher than or equal to 60%, and the emissivity of 7-14 micrometers is higher than or equal to 80%. Therefore, the radiation refrigeration fabric can be further used for preparing textile products such as clothes, curtains, tents, sunshades, hats, scarves, car covers and hoods with cooling requirements,comfort and breathability of the textile products are kept, cooling can be realized by the aid of the textile products, comfortable feeling is increased, energy consumption is omitted, energy is saved, and environments are protected.
Owner:NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus
InactiveUS20030219188A1Coupling light guidesOptical waveguide light guideMultiplexingCommunications system
The invention provides an optical modulator wherein appearance of radiation mode light can be suppressed to improve performances as a device. The optical modulator includes a multiplexing waveguide which in turn includes two input waveguides to which propagation lights from a linear waveguide are inputted, a waveguide coupling element, and two output waveguides. The width of the waveguide coupling element on the input side is greater than the total width of the two input waveguides, and the width of the waveguide coupling element on the output side is greater than the total width of the two output waveguides. The device of the present invention is applied typically to an optical communication system.
Owner:FUJITSU LTD
Drilling machine
The invention discloses a drilling machine, which comprises a motor and a machine needle, wherein the machine needle is provided with a point heating device, and is made of stainless steel; and the point heating device gradually heats in a radiation mode. The drilling machine has the advantages that: good marks can be left, and the influence of the loose degree of cloth is avoided.
Owner:SHAANXI LONGHAI ENG CONSTR
Fiber lasers having a complex-valued Vc-parameter for gain-guiding
InactiveUS6751388B2Laser using scattering effectsOptical fibre with graded refractive index core/claddingDopantRadiation mode
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Fiber lasers having a complex-valued Vc-parameter for gain-guiding
InactiveUS20030031442A1Easy to useLowering indexLaser using scattering effectsOptical fibre with graded refractive index core/claddingDopantRadiation mode
The instant invention concerns optical fibers that have complex-valued Vc-parameters due to gain g established by active dopants that are doped into the fiber core in accordance with a doping profile. In particular, the doping levels are very high, such that the gain g makes a sufficiently large contribution to an imaginary part of the complex-valued Vc-parameter to define at least one gain-guided mode, e.g., the fundamental mode or several low-order modes of radiation in the optical fiber. The fiber does not require any index-guiding effects to a single mode or just a few of the lowest-order modes in large cross-section cores having diameters in the range from 50 mum to 500 mum in diameter and yield kilowatt level output power. The fiber may, in addition to gain-guiding, take advantage of a refractive index profile to provide for index-guiding or index-antiguiding effects in addition to gain-guiding.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Dual radiation patterns antenna
InactiveUS20130162491A1Improved radiation patternExtend signal rangeSimultaneous aerial operationsRadiating elements structural formsRadiation modeRadiation pattern
A dual radiation patterns antenna is provided in the present invention. The dual radiation patterns antenna includes a substrate, a first antenna unit and a second antenna unit. The substrate has a first surface and a second surface opposite to the first surface. The first antenna is formed on the first surface of the substrate and used to radiate a first radiation pattern. The second antenna is formed on the second surface of the substrate and used to radiate a second radiation pattern. A first vertical projecting plane of the first antenna unit on the second surface is overlapped with the second antenna unit completely or partially. A second vertical projecting plane of the second antenna unit on the first surface is overlapped with the first antenna unit completely or partially. The first radiation pattern and the second radiation pattern are perpendicular each other.
Owner:SJ ANTENNA DESIGN
System and method for automated radio frequency safety and regulatory compliance at wireless transmission sites
ActiveUS7570922B2Improve protectionLow costElectrotherapyTransmission monitoringWireless transmissionRadiation mode
Maintaining information about radio transmission sites in a computer accessible database. In one aspect this is a living database consisting of hundreds of thousands of wireless sites and their unique characteristics. The database includes energy transmissions information including site specific physical locations and utilization characteristics of the sites. The System can deliver MPE maps of radio frequency radiation and site specific safety programs to any worker visiting a wireless site in the United States. These maps (and site's specific safety programs) are updated on a daily basis. The System can be accessed via the Internet by registered users. The System creates and displays MPE maps and radiation pattern maps showing gradation power densities to identify exposure dangers.
Owner:SAFE DYNAMICS INC
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