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4322results about "Loop antennas" patented technology
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High Efficiency and Power Transfer in Wireless Power Magnetic Resonators
InactiveUS20090072629A1Improve efficiencyIncrease powerNear-field transmissionElectromagnetic wave systemCouplingEngineering
Techniques for wireless power transmission at levels that induce high power transfer and / or high efficiency of coupling.
Owner:QUALCOMM INC
Ceramic antenna module and methods of manufacture thereof
ActiveUS20060092079A1Minimize reflection lossWithout adversely impacting radiation efficiencySimultaneous aerial operationsSolid-state devicesRF front endPermittivity
Circuit modules and methods of construction thereof that contain composite meta-material dielectric bodies that have high effective values of real permittivity but which minimize reflective losses, through the use of host dielectric (organic or ceramic), materials having relative permittivities substantially less than ceramic dielectric inclusions embedded therein. The composite meta-material bodies permit reductions in physical lengths of electrically conducting elements such as antenna element(s) without adversely impacting radiation efficiency. The meta-material structure may additionally provide frequency band filtering functions that would normally be provided by other components typically found in an RF front-end.
Owner:DE ROCHEMONT L PIERRE
RFID tag
ActiveUS9171244B2Low costAntenna supports/mountingsSemiconductor/solid-state device detailsCapacitanceResonance
Provided is an RFID tag, wherein a communication distance of several centimeter or more can be secured and the cost of which can be reduced in comparison to conventional on-chip antennas, even when being compact in size (square shaped with a side of 1.9 to 13 mm). The RFID tag (80) comprises an antenna (20), an IC chip (30) connected to the antenna (20), and a sealing material (10) that seals the IC chip (30) and the antenna (20). The antenna (20) is a coil antenna or a loop antenna, and the resonance frequency (f0) of an electric circuit constituted by the inductance (L) of the antenna (20) and the capacitance (C) of the IC chip (30) is equal to the operation frequency of the IC chip (30), or in the vicinity thereof.
Owner:SES RFID SOLUTIONS
Intelligent station using multiple RF antennae and inventory control system and method incorporating same
ActiveUS7084769B2Boost RF signal strengthAntenna supports/mountingsCash registersControl systemEngineering
An inventory control system and method that tracks inventories of items with RFID tags, includes a reader unit and an intelligent station that tracks RFID tags to determine item information of items to be inventoried. The reader unit transmits and receives RF signals. The intelligent station includes a first RF antenna connected to the reader unit by a first transmission cable through a first switch, and one or more additional RF antennae connected to the reader unit by the same first transmission cable through additional switches. An inventory control processing unit receives item information from the intelligent stations to update inventory information regarding the items to be inventoried.
Owner:SENSORMATIC ELECTRONICS CORP
Non-contact power transmission device
An electromagnetic resonance non-contact power transmission device includes a transmitter including a transmitter resonance element having a mechanism for discretely or continuously varying a resonant frequency, a transmitter excitation element coupled to the transmitter resonance element by electromagnetic induction, and an alternating current source for applying an alternating current at the same frequency as the resonant frequency to the transmitter excitation element, and a plurality of receivers each including a receiver resonance element having a specific resonant frequency, a receiver excitation element coupled to the receiver resonance element by electromagnetic induction, and an output circuit for outputting an electric current induced by the receiver excitation element. Electric power is transmitted selectively from the transmitter to any of the receivers having different specific resonant frequencies by changing the resonant frequency of the transmitter.
Owner:SONY CORP
Wireless Power Supply System and Wireless Power Supply Method
ActiveUS20080122297A1Improve convenienceMeet needsElectrical testingLoop antennasElectric power systemComputer terminal
An object is to provide a system for improving convenience for users, by which a portable electronic device or the like can be charged even in a place where utility power is not available. Another object is to provide a system which allows a service provider to easily perform customer management. A wireless power supply system includes a power storage device having a power storage portion, a terminal charging device for wirelessly supplying electric power to the power storage device, and a management server having user information. Electric power can be supplied to specified users by intercommunication of user information between the power storage device and the terminal charging device and between the terminal charging device and the management server.
Owner:SEMICON ENERGY LAB CO LTD
Flexible Circuit for Downhole Antenna
ActiveUS20080030415A1Antenna supports/mountingsRadiating elements structural formsElectrical conductorFlexible circuits
An antenna for an electromagnetic tool having a longitudinal axis and a core. The antenna includes a flexible dielectric substrate flexibly conformed about the core and an electrical conductor disposed on the dielectric substrate. The electrical conductor is disposed on the substrate such that the antenna has a dipole moment having any desired direction relative to the longitudinal axis of the tool.
Owner:SCHLUMBERGER TECH CORP
Apparatus and system for transmitting power wirelessly
ActiveUS20090128262A1Improve efficiencyIncrease powerResonatorsLoop antennasElectric power transmissionTransmitted power
An apparatus for transmitting power wirelessly is provided. The apparatus comprises: a dielectric resonator which generates evanescent waves in a predetermined direction in order to transmit power; and a loop antenna which is coupled to a surface of the dielectric resonator and supplies power to the dielectric resonator. The dielectric resonator transmits power by means of evanescent waves generated in directions perpendicular to top and bottom surfaces of the dielectric resonator and by radiation in directions parallel to the top and bottom surfaces of the dielectric resonator. Accordingly, efficient power transmission over short and long distance ranges is possible.
Owner:SAMSUNG ELECTRONICS CO LTD +1
Wireless power supply system and wireless power supply method
ActiveUS8099140B2Improve convenienceEasy to implementElectrical testingLoop antennasElectric power systemComputer terminal
Owner:SEMICON ENERGY LAB CO LTD
Transmitting antenna and transmitter for wireless power charging
InactiveUS20140184155A1Low efficiencyReduce the burden onBatteries circuit arrangementsTransformersTransmitted powerEngineering
The present invention has been made in an effort to overcome the disadvantage that a user has to consciously adjust the positions of a wireless power transmitter and a wireless power receiver. The transmitting antenna for wireless power charging, which wirelessly transmits power to charge a device, includes a first antenna coil section for producing a magnetic field in a first direction, and a second antenna coil section for producing a magnetic field in a second direction. Accordingly, the three-dimensional transmitting antenna can minimize decreases in efficiency caused by the position and direction of the receiver and maximize reception efficiency at a particular point or within a particular range.
Owner:KOREA ELECTRONICS TECH INST
Magnetically coupled antenna range extender
InactiveUS6839035B1Expand the scope of operationResonant long antennasElectric signal transmission systemsEngineeringElectrical and Electronics engineering
A magnetically coupled antenna range extender structured to be interposed between an RF antenna and an electronic device. The antenna range extender is positioned between and proximate to one of the RF antenna and the electronic device, for extending the operating range over which information may be communicated and exchanged between the RF antenna and the electronic device.
Owner:A C C SYST
Integrated circuit with millimeter wave and inductive coupling and methods for use therewith
ActiveUS20090218407A1Near-field transmissionSemiconductor/solid-state device detailsEngineeringMillimetre wave
A circuit includes a plurality of integrated circuits or dies having corresponding circuits, the plurality of integrated circuits or dies include a first plurality of integrated circuits or dies having corresponding millimeter wave interfaces and a second plurality of integrated circuits or dies having corresponding inductive interfaces. The first plurality of integrated circuits or dies communicate first signals therebetween via the corresponding millimeter wave interfaces and the second plurality of integrated circuits or dies communicate second signals therebetween via the corresponding inductive interfaces.
Owner:AVAGO TECH INT SALES PTE LTD
Wireless communications including an antenna for wireless power transmission and data communication and associated methods
The wireless communication system includes a first device, e.g. a radio frequency identification (RFID) reader, having a wireless power transmitter, a first wireless data communications unit, and a first dual polarized loop antenna having isolated signal feedpoints along a first loop electrical conductor. The wireless power transmitter transmits a power signal having a first polarization, and the first wireless data communications unit communicates using a data signal having a second polarization. A second device, e.g. an RFID tag, includes a second dual polarized loop antenna. A second wireless data communications unit communicates with the first wireless data communications unit of the first device using the data signal having the second polarization. A wireless power receiver receives the power signal having the first polarization from the wireless power transmitter of the first device, and provides power for the second device.
Owner:HARRIS CORP
Non-contact wireless communication apparatus, method of adjusting resonance frequency of non-contact wireless communication antenna, and mobile terminal apparatus
ActiveUS20090146892A1Range of resonance frequency can be extendedEasy to adjustBatteries circuit arrangementsElectromagnetic wave systemCapacitanceTerminal equipment
A non-contact wireless communication apparatus and a mobile terminal apparatus are provided. The non-contact wireless communication apparatus includes a non-contact wireless communication antenna, a resonance capacitor, connected in parallel with the non-contact wireless communication antenna, for obtaining a predetermined resonance frequency with the non-contact wireless communication antenna, a resonance frequency adjustment unit for changing a resonance capacitance of the resonance capacitor to adjust the resonance frequency, a capacitance change amount control unit for controlling a change in resonance capacitance of the resonance capacitor in the resonance frequency adjustment unit, a resonance frequency shift unit for shifting the resonance frequency of the non-contact wireless communication antenna, and on / off control unit for performing on / off control of the resonance frequency shift unit in accordance with the amount of change in resonance capacitance of the resonance capacitor by the capacitance variation control unit.
Owner:SONY CORP
Polyhedral antenna and associated methods
The antenna includes an electrically conductive antenna body having a polyhedral shape with opposing first and second ends and a medial portion therebetween. The medial portion of the electrically conductive antenna body is wider than the opposing first and second ends thereof, and the electrically conductive antenna body has a slot therein extending from at least adjacent the first end to at least adjacent the second end. The polyhedral antenna has an omnidirectional pattern, is horizontally polarized and broad in bandwidth above a lower cutoff frequency.
Owner:HARRIS CORP
Power storage device
InactiveUS7714535B2Increase power storageMeet growth needsTransistorBatteries circuit arrangementsControl storeControl circuit
Owner:SEMICON ENERGY LAB CO LTD
Antenna calibration method and system
InactiveUS7408507B1Enabling in-situ calibrationReduce calibration timeAntenna arraysBeacon systemsRF front endEngineering
A phased array antenna system includes an RF front end, a radome, and an optical calibrator embedded in the radome for enabling in-situ calibration of the RF front end. The optical calibrator employs an optical timing signal generator (OTSG), a Variable Optical Amplitude and Delay Generator array (VOADGA) for receiving the modulated optical output signal and generating a plurality of VOADGA timing signals, and an optical timing signal distributor (OTSD). The in-situ optical calibrator allows for reduced calibration time and makes it feasible to perform calibration whenever necessary.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Tunable wireless energy transfer systems
ActiveUS8643326B2Effective levelingImprove performanceMultiple-port networksBatteries circuit arrangementsEnergy transferAudio power amplifier
Described herein are improved configurations for a wireless power transfer. A power source for driving a resonator includes a switching amplifier. The duty cycle of the switching amplifier may be adjusted as well as optionally inductors and / or capacitors of the circuit to improve the efficiency of power transfer from the power source to the resonators when the parameters of the resonant load change.
Owner:WITRICITY CORP
Artificial medium, its manufacturing method, and antenna device
InactiveUS20100053019A1Reduce manufacturing costLaminationLamination apparatusElectromagnetic electron waveOperating frequency
Owner:ASAHI GLASS CO LTD
Apparatus and methods for constructing antennas using wire bonds as radiating elements
ActiveUS7295161B2Improve efficiencyWide bandwidthSimultaneous aerial operationsAntenna supports/mountingsCommunications systemTransceiver
Antennas are provided which are constructed using one or more wires as radiating elements attached to a substrate or chip, wherein wire bonding methods can be used to attach and form loop profiles for the wires. The antennas can be integrally packaged with IC chips (e.g., IC transceivers, receivers, transmitters, etc.) to build integrated wireless or RF (radio frequency) communications systems.
Owner:GLOBALFOUNDRIES US INC
Low/high frequency shared leakage antenna, base station apparatus and close-range detection system using the antenna
InactiveUS8811278B2Improve reliabilitySecure power sourceSimultaneous aerial operationsError preventionElectrical conductorEngineering
The present invention provides a high / low frequency dual wireless location detection and information transmission system which is high in reliability and maintainability, and can be easily installed.A leakage coaxial inner conductor and a conductor line provided in parallel are short-circuited at an end, a single leakage coaxial operation and a loop operation of the inner conductor and the conductor line are performed at the same time, the ID of a tag is communicated using magnetic fields which locally exist near the conductor line by the loop, and wireless position detection and information communications which are less affected by the influence of ambient environments due to electromagnetic waves in a closed area are realized by open-type lines.
Owner:HITACHI LTD +1
RFID device and method of forming
InactiveUS6940408B2Semiconductor/solid-state device detailsAntenna supports/mountingsRadio frequencyConductive ink
Owner:AVERY DENNISON CORP
Antenna using inductively coupled feeding method, RFID tag using the same and antenna impedence matching method thereof
InactiveUS20060158380A1Valid matchSmall and light and inexpensiveAntenna supports/mountingsRadiating elements structural formsAntenna impedanceRF front end
Provided are an antenna using an inductively coupled feeding method, a Radio Frequency Identification (RFID) tag thereof, and an antenna impedance matching method thereof. The antenna includes a resonator for determining a resonance frequency of the antenna and a feeder for providing an RF signal to an element connected to the antenna. An RFID tag includes an antenna which receives an RF signal from the RFID reader, an RF front-end which rectifies and detects the RF signal, and a signal processor which is connected to the RF front-end. Particularly, the antenna includes a resonator for determining a resonance frequency of an antenna and a feeder for providing the RF signal to the RF front-end, wherein mutual inductive coupling between the resonator and the feeder is performed.
Owner:ELECTRONICS & TELECOMM RES INST
Antenna for radio frequency identification
InactiveUS20050134460A1Integrated and compact antennaSmall sizeSimultaneous aerial operationsAntenna supports/mountingsMillimeterPhysics
To provide an antenna shape devised to be integrated and compact. The antenna connected to an IC chip that performs wireless identification includes a slit that separates two connection points with respect to the IC chip, in which a length of the slit is approximately 3 millimeters, and a width of the slit is in a range of from 0.8 millimeter to 1.4 millimeters.
Owner:HITACHI LTD
Strain monitoring system and apparatus
ActiveUS20090273353A1Internal osteosythesisResistance/reactance/impedenceElectromagnetic couplingBiological body
This application relates to an apparatus and system for sensing strain on a portion of an implant positioned in a living being. In one aspect, the apparatus has at least one sensor assembly that can be mountable thereon a portion of the implant and that has a passive electrical resonant circuit that can be configured to be selectively electromagnetically coupled to an ex-vivo source of RF energy. Each sensor assembly, in response to the electromagnetic coupling, can be configured to generate an output signal characterized by a frequency that is dependent upon urged movement of a portion of the passive electrical resonant circuit and is indicative of strain applied thereon a portion of the respective sensor assembly.
Owner:ST JUDE MEDICAL LUXEMBOURG HLDG II S A R L SJM LUX II
Process for manufacture of novel, inexpensive radio frequency identification devices
InactiveUS20060071084A1Antenna supports/mountingsSemiconductor/solid-state device detailsElectrical conductorTransformer coupling
A novel process for fabricating low cost RFID devices in which a pattern of metallic toner is printed on a substrate and the contacts on a silicon die are placed directly on contact points printed as part of the pattern of metallic toner; the whole device is then heated to both cure the metallic toner into metallic conductors and bond the silicon die to the metallic conductors. Alternatively, the silicon die can be physically attached to the substrate and the electrical pathway between the silicon die and the metallic conductors is established via a transformer coupling comprised of a coil winding on the silicon die and a pattern of coils printed as part of the metallic toner pattern. The pattern of coils can be comprised of individually printed coil loops printed on, and separated by, dielectric layers.
Owner:ELECTROX
Touch panel structure, touch and display panel structure, and integrated touch display panel structure having antenna pattern and method of forming touch panel having antenna pattern
ActiveUS20140043248A1Reduce areaConvenience to workRadiating elements structural formsLoop antennasEngineeringElectronic component
In a touch panel and display panel structure or an integrated touch display panel structure, an antenna pattern is disposed on a touch module, a display module or an integrated touch display module for an increased distance between the antenna pattern and electronic components below the structure, reducing electromagnetic effect caused by the electronic components and improving the antenna performance. The antenna pattern is arranged at two opposite edges of a top surface of the touch and display module or the integrated touch display module, and also at side surfaces of a housing non-coplanar to the top surface such that the antenna pattern is located outside the displaying area of the display module. Maintaining the effective antenna area and enhancing the working bandwidth of the antenna, the side width of surface of the touch panel and display panel structure or the integrated touch display panel structure is significantly reduced.
Owner:HTC CORP
Apparatus and system for transmitting power wirelessly
ActiveUS7843288B2Improve efficiencyIncrease powerSimultaneous aerial operationsRadiating elements structural formsElectric power transmissionElectric force
An apparatus for transmitting power wirelessly is provided. The apparatus comprises: a dielectric resonator which generates evanescent waves in a predetermined direction in order to transmit power; and a loop antenna which is coupled to a surface of the dielectric resonator and supplies power to the dielectric resonator. The dielectric resonator transmits power by means of evanescent waves generated in directions perpendicular to top and bottom surfaces of the dielectric resonator and by radiation in directions parallel to the top and bottom surfaces of the dielectric resonator. Accordingly, efficient power transmission over short and long distance ranges is possible.
Owner:SAMSUNG ELECTRONICS CO LTD +1
Radio frequency IC tag and method for manufacturing the same
InactiveUS20050275539A1Maximum antenna efficiencyReduces efficiency of antennaAntenna supports/mountingsSemiconductor/solid-state device detailsRadio frequencyElectric power
A radio frequency IC tag and a manufacturing method for the same includes an IC chip on which information is stored, and an antenna for transmitting the information that is stored on the IC chip. In the antenna, a power-feeding part on which the IC chip is mounted extends along a direction in which an electric current flows. Radiation parts are formed so that the width of the radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part. The radiation parts extend from the power-feeding part, at both sides thereof, along the direction in which the electric current flows.
Owner:HITACHI LTD
Imaged article on polymeric substrate
InactiveUS6203952B1Increasing the thicknessSmooth peelingAntenna supports/mountingsLoop antennasResistPolymer substrate
Patterned articles, such as RFID antenna, are made by subablation, a process comprising the steps of:A. providing a substrate having a coating, such as a metal or metal oxide, and an interface comprising the thin region where the coating and the substrate are closest to each other;B. exposing at least one part of the total area of the coating to a flux of electromagnetic energy, such as a focused excimer laser beam, sufficient to disrupt the interface but insufficient to ablate the coating; andC. removing the parts of the coating in registry with the portion of the interface area that was disrupted, by means such as ultrasonic agitation.The process has advantages over photo-resist processes in that there is no residual chemical resist left on the product and no undercutting of the pattern or image. It has advantages over laser ablation processes in that higher throughput is possible at the same energy level and there is no microscopic debris left on the product surface.
Owner:3M INNOVATIVE PROPERTIES CO
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