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5100 results about "Feed line" patented technology
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In a radio antenna, the feed line (feedline), or feeder, is the cable or other transmission line that connects the antenna with the radio transmitter or receiver. In a transmitting antenna, it feeds the radio frequency (RF) current from the transmitter to the antenna, where it is radiated as radio waves. In a receiving antenna it transfers the tiny RF voltage induced in the antenna by the radio wave to the receiver. In order to carry RF current efficiently, feed lines are made of specialized types of cable called transmission line. The most widely used types of feed line are coaxial cable, twin-lead, ladder line, and at microwave frequencies, waveguide.
Multi-band radiating elements with composite right/left-handed meta-material transmission line
ActiveUS7911386B1Simultaneous aerial operationsRadiating elements structural formsMulti bandHarmonic
Dual-band and multi-band radiating elements are described based on composite right / left-handed (CRLH) meta-material transmission line (TL). These elements can operate as resonators and / or antennas depending on feed-line configuration. The radiating elements are based on the fundamental backward wave supported by a composite right / left-handed (CRLH) meta-material transmission line (TL). Unit-cells of the transmission line comprise conductive patches coupled through vias to a ground plane. The physical size and operational frequencies of the radiating element is determined by the unit cell of the CRLH meta-material. This radiating element is configured for monopolar radiation at a first resonant frequency and patch-like radiation at a second resonant frequency. The first and second resonant frequencies are not constrained to a harmonic relationship.
Owner:RGT UNIV OF CALIFORNIA
Display apparatus
InactiveUS6618029B1Discharge tube luminescnet screensStatic indicating devicesElectricityDriving current
A display apparatus is provided which is capable of improving display quality by expanding the light-emission area of pixels by improving the layout of pixels and common power-feed lines formed on a substrate. Pixels including a light-emission element, such as an electroluminescence element or an LED element, are arranged on both sides of common power-feed lines so that the number of common power-feed lines is reduced. Further, the polarity of a driving current flowing between the pixels and the light-emission element is inverted so that the amount of current flowing through the common power-supply lines is reduced.
Owner:INTELLECTUAL KEYSTONE TECH LLC
Dielectric resonator array antenna
InactiveUS20140043189A1Improve featuresIndividually energised antenna arraysElectrically short antennasTime delaysDielectric resonator antenna
Disclosed herein is a dielectric resonator array antenna including one or more series-feed type array elements installed to be arranged in parallel in a multilayer substrate, wherein first high frequency signals having the same or different phases or time delays are adjusted to be applied to the respective series-feed type array elements and respective radiated 1D array beams are individually used or combined to adjust beamforming of 2D array beams. Also, since the series-feed type array element is configured by connecting a plurality of dielectric resonator antennas in series, it can be easily and simply fed in series through coupling generated by the intervals between the feeding lines of the pertinent feeding unit of the plurality of dielectric resonator antennas connected in series. In addition, the broadband characteristics can be obtained by using the plurality of dielectric resonator antennas, whereby the overall antenna performance can be enhanced.
Owner:SAMSUNG ELECTRO MECHANICS CO LTD +1
Microwave garment for heating and/or monitoring tissue
InactiveUS6330479B1Reduce manufacturing costImproved patient comfortElectrotherapyMicrowave therapyDielectric substrateEngineering
A flexible microwave applicator and method of use thereof. The applicator includes a flexible, dielectric-containing compartment (e.g. temperature regulated water or oil) having a variable contour, tissue-engaging surface and an opposite non-tissue-engaging surface and an antenna array adjacent to a non-tissue-engaging surface. The antenna array includes at least one flexible printed circuit board having a front metal surface, a dielectric substrate, a back metal surface, a connection structure for connecting the antenna array to at least one external microwave device, at least one dual concentric conductor aperture on the front surface, and at least one microstrip feedline in communication with the dual concentric conductor aperture and the connection structure. The microwave applicator also includes flexible attachment material for placement over the antenna array and dielectric compartment to allow the microwave applicator to be attached to a subject like a garment which closely conforms to the anatomy portion to be heated. The flexible attachment material may be configured such that the microwave applicator is configured as an appropriately-shaped type of garment, for example, a vest, jacket, cap, hood, blanket, custom shaped conformal wrap, sleeve, or as a pair of shorts.
Owner:RGT UNIV OF CALIFORNIA
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 apparatus
InactiveUS7812778B2Easy to changeRaise the ratioRadiating element housingsElongated active element feedElectrical conductorCoaxial cable
An antenna apparatus is provided, which removes dead directions, and at the same time, has a suppression means for easily suppressing the change of an antenna directivity pattern caused by the effect of a feed line or a radome and an improvement means for simply improving the VSWR deterioration caused by the effect of a reflector or the radome. The antenna apparatus includes a sleeve antenna connected to a coaxial cable and a reflector in the shape of a cone, the sleeve antenna including a central conductor and a sleeve, in which the sleeve antenna is arranged in a concave portion of the cone so that the central conductor is aligned with a central axis of the cone, and a top end of the central conductor is separate from a vertex portion of the cone.
Owner:SAMSUNG ELECTRONICS CO LTD
Antennas
InactiveUS20150009089A1Radiating element housingsIndividually energised antenna arraysDielectric substrateConductive materials
One aspect of the invention provides an antenna including: a dielectric substrate and a plurality of antenna elements positioned on a surface of the dielectric substrate. Each antenna element includes: a sector-shaped sheet of conductive material and a conductive feed line coupled to the sector-shape sheet of conductive material. Another aspect of the invention provides an antenna including: a dielectric substrate, a plurality of antenna elements positioned on a surface of the dielectric substrate at substantially uniform angular intervals along an arc, and a ground layer mounted to an opposite side of the dielectric substrate from the plurality of antenna elements. Each antenna element includes: a sector-shaped sheet of conductive material having a central angle between about 90° and about 180° and a conductive feed line coupled to the sector-shape sheet of conductive material.
Owner:L COM
Dipole antenna of RF chip
ActiveCN101740862AReduce the impactImproving Impedance MatchingRadiating elements structural formsSlot antennasImpedance matchingDipole antenna
Owner:KUANG CHI INST OF ADVANCED TECH
Choked Dielectric Loaded Tip Dipole Microwave Antenna
ActiveUS20090187180A1Surgical instruments for heatingSurgical instruments using microwavesDielectricMicrowave
A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween. A radiating portion is also included having an unbalanced dipole antenna including a proximal portion and a distal portion that are of different lengths. The proximal portion includes at least a portion of the inner conductor and the inner insulator and the distal portion includes a conductive member.
Owner:TYCO HEALTHCARE GRP LP
Antenna matching circuit, mobile communication device including antenna matching circuit, and dielectric antenna including antenna matching circuit
InactiveUS7088307B2Wide bandEffective meanMultiple-port networksOne-port networksDielectricCapacitance
In an antenna matching circuit including a parallel resonant section connected to a radiation element constituting an antenna, the parallel resonant section includes a series resonant portion composed of an inductance component and a capacitance component. The series resonant portion realizes antenna matching and band widening. The parallel resonant section can be inserted in a feeder line connected to the radiation element or inserted in a GND line connected to the radiation element.
Owner:TAIYO YUDEN KK
Microstrip antenna
InactiveUS7994999B2FlexibilityImproving Impedance MatchingAntenna arraysSimultaneous aerial operationsDual frequencyCapacitance
A microstrip antenna that can be linear, co-circular, or dual-circularly polarized having co-planar radiating elements and operating at dual frequency bands wherein an inner radiating element is surrounded by and spaced from an outer radiating element. Each radiating element resonates at a different frequency. In one embodiment of the invention a feed network has a single, cross-shaped, feed line that is positioned between the inner and outer radiating elements and capacitively coupled to the inner and outer radiating elements. In another embodiment of the present invention, the radiating elements are fed separately by first and second feed networks each having a plurality of feed points. The radiating elements each have one active feed point that is either directly or indirectly coupled to its respective feed network.
Owner:HARADA IND OF AMERICA
Antenna device and array antenna
The present invention relates to a broadband non-resonant antenna device for wireless transmission of information using electromagnetic signals, comprising a metal sheet layer, forming a plane, with a slotline that comprises a first part and a second part. The side of the second part that is the most distant from the first part transcends into a widening open-ended tapered slot in the metal sheet layer. The device additionally comprises a feeding line in the metal sheet layer. The feeding line comprises a feeding part, with a first end and a second end, and gaps separating the feeding part from the surrounding metal sheet layer by a certain distance, where the slotline is intersected by the feeding line.
Owner:HIGHBRIDGE PRINCIPAL STRATEGIES LLC AS COLLATERAL AGENT
Monopole radio frequency antenna
InactiveCN101667680AImproving Impedance MatchingReduce the impactElongated active element feedCouplingMetal sheet
The invention discloses a monopole radio frequency antenna comprising a metal sheet, a feeder line and a medium for the placement of the metal sheet and the feeder line. The feeder line is fed into the metal sheet through a coupling mode. The monopole radio frequency antenna has the advantages of small size, simple machining, low cost, high utilization rate of an antenna radiation area, easy matching design of a multimode antenna, high interference resisting capability and the like.
Owner:深圳大鹏光启科技有限公司
Triaxial antenna for microwave tissue ablation
ActiveUS7101369B2Easy to adjustReduce heatElectrotherapySurgical instruments for heatingMicrowaveTissue ablation
An improved antenna for microwave ablation uses a triaxial design which reduces reflected energy allowing higher power ablation and / or a smaller diameter feeder line to the antenna.
Owner:WISCONSIN ALUMNI RES FOUND
Planner inverted-F antenna having a rib-shaped radiation plate
InactiveUS7061437B2Improve rigidityLow costSimultaneous aerial operationsAntenna supports/mountingsGround contactGround plane
Owner:SYNCOMM TECH
Antenna and radio IC device
ActiveUS20090109102A1Efficiently transmitting/receivingHigh gainAntenna supports/mountingsSensing record carriersElectromagnetic couplingCapacitance
An antenna includes a feeder terminal and a resonance circuit. The resonance circuit is defined by a capacitance element and an inductance element and includes first and second radiation plates. The capacitance element is electromagnetically coupled to the first radiation plate, and the inductance element is electromagnetically coupled to the second radiation plate. A radio IC device includes an electromagnetic coupling module including a feeder circuit substrate on which a radio IC chip is mounted, and radiation plates. The feeder circuit substrate includes an inductance element and a capacitance element. One of the radiation plates faces and is magnetically coupled to the inductance element. The other radiation plate faces and is electrically coupled to the capacitance element. The radio IC chip is operated by signals received by the radiation plates, and a response signal from the radio IC chip is radiated from the radiation plates.
Owner:MURATA MFG CO LTD
High-strength microwave antenna assemblies and methods of use
InactiveUS7128739B2Avoid mechanical failureHigh energy concentrationSurgical needlesMicrowave therapyMicrowaveHigh intensity
High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. The antenna can be used individually or in combination with multiple antennas to create a combined ablation field. When multiple antennas are used, microwave energy can be applied simultaneously to all the antennas or sequentially between the antennas. Furthermore, to facilitate positioning the antennas in or near the tissue to be treated, RF energy may be applied at the tip of the antenna to assist in cutting through the tissue.
Owner:TYCO HEALTHCARE GRP LP
Radio frequency (RF) integrated circuit (IC) packages with integrated aperture-coupled patch antenna(s) in ring and/or offset cavities
ActiveUS20090256752A1Reduce in quantityAntenna arraysSimultaneous aerial operationsGround planeRadio frequency
A radio-frequency integrated circuit chip package has N integrated aperture-coupled patch antennas, N being at least two, and includes N generally planar patches, and at least one generally planar ground plane spaced inwardly from the N generally planar patches and substantially parallel thereto. The ground plane is formed with at least N coupling aperture slots therein, and the slots are substantially opposed to the patches. N feed lines are spaced inwardly from the ground plane and substantially parallel thereto, and at least one radio frequency chip is spaced inwardly from the feed lines and coupled to the feed lines and the ground plane. A first substrate layer is spaced inwardly from the feed lines, and is formed with a chip-receiving cavity, with the chip located in the chip-receiving cavity. A second substrate layer is interposed in a region between the ground plane and a plane defined by the patch, the patch is formed in a first metal layer, the ground plane is formed in a second metal layer, and the second substrate layer defines an antenna cavity in which the N generally planar patches are located. “Island” and “offset” configurations, as well as fabrication methods, are also disclosed.
Owner:GLOBALFOUNDRIES US INC
Multifrequency inverted-F antenna
InactiveUS6861986B2Simultaneous aerial operationsAntenna supports/mountingsElement spaceRadiating element
A multifrequency inverted-F antenna includes a radiating element having opposite first and second ends, a grounding element spaced apart from the radiating element, and an interconnecting element extending between the radiating and grounding elements and including first, second, and third parts. The first part is connected to the radiating element at a feeding point between the first and second ends. The second part is offset from the first part in a longitudinal direction, and is connected to the grounding element. The third part interconnects the first and second parts. A feeding line is connected to the interconnecting element.
Owner:WISTRON NEWEB
Magnetic resonance whole body antenna system, elliptically polarized with major ellipse axis tilted/non-horizontal at least when unoccupied by an examination subject
ActiveUS8362775B2Improved field distributionLittle effortMagnetic measurementsDiagnostic recording/measuringWhole bodyElliptical polarization
A magnetic resonance system obtaining magnetic resonance exposures of an examination subject, has an examination tunnel, a whole-body antenna with two connection terminals. The whole-body antenna cylindrically extends around the examination tunnel along a longitudinal axis. The system has a radio-frequency supply device in order to respectively supply the whole-body antenna with radio-frequency signals for emission of a radio-frequency field in the examination tunnel. The radio-frequency supply device has a radio-frequency generator for generation of a radio-frequency signal, a signal splitter that divides a radio-frequency signal coming from the radio-frequency generator into two partial signals that are phase-shifted by 90° relative to one another. Two radio-frequency feed lines are connected with the two connection terminals of the whole-body antenna. Via these radio-frequency feed lines, the two partial signals are fed into the whole-body antenna. The whole-body antenna has an intrinsic transmission characteristic such that a radio-frequency field is emitted that is elliptically polarized in a defined manner in a plane lying perpendicular to the longitudinal axis (at least in the unloaded state of the examination tunnel).
Owner:SIEMENS HEALTHCARE GMBH
Dual-band omnidirectional antenna for wireless local area network
InactiveUS6859176B2Easy to operateReduce manufacturing costSimultaneous aerial operationsAntenna supports/mountingsDual frequencyOmnidirectional antenna
The present invention relates to a dual-band omnidirectional antenna for wireless LANs. The antenna has a planar dielectric substrate, and first and second conductive patterns. The planar dielectric substrate has two parallel surfaces. The first conductive pattern is arranged on one surface of the substrate, and is provided with a first feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the first feeder line and designed such that some of them operate in a high frequency band (4.9 to 5.85 GHz frequency band), and others thereof operate in a low frequency band (2.4 to 2.5 GHz frequency band). The second conductive pattern is arranged on the other surface of the substrate, and provided with a second feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the second feeder line arid up-down symmetrically arranged with respect to the radiating elements on the first conductive pattern.
Owner:SUNWOO COMM +1
Rotation-independent helical antenna
ActiveUS7286099B1Improve axial ratioRaise the ratioRadiating elements structural formsHelical antennasElectrical conductorFeed line
A helical antenna having a central axis defined between a base end and a distal end comprises a helical conductor wound about the central axis and having a feed line disposed at the base end and along the central axis, and may also include an elongated dielectric core about which the electrical conductor is wound.
Owner:LOCKHEED MARTIN CORP
TV and data cable system ingress noise blocker
InactiveUS6094211APrevents loss of picture qualityLow costTelevision system detailsColor television detailsSignal qualityModem device
This invention permits the upstream transmission of short packets of information in a cable TV system, and blocking upstream noise at all other times, and does so without interfering with image quality of normal TV viewing. A remotely operable ingress noise blocking filter is placed at the terminating junction between a subscriber's coaxial drop cable and a corresponding feeder tap in a cable TV system. The ingress noise blocking filter contains a high pass filter to pass the normal TV band. This high pass filter is bypassed by a section containing low pass filters and a switch operated when receiving a control signal from a cable modem during those short durations the cable modem is authorized to transmit an upstream signal. Low pass filters isolate the switching elements so that switching transients cannot occur in the downstream TV band. The level of the amplitude of the downstream signal is unaffected whether the switching elements are open or closed. Further, the switching arrangement provides a relatively constant impedance, both when the switching element is on and off to provide a high return loss and avoid signal reflections and maintain signal quality. In a diagnostic mode, the location of each noise source is determined by correlating the energy measured at each a set of frequencies across the band at the headend during those periods when the cable modem is allowed to transmit versus the energy received during those periods when the same cable modem is not authorized to transmit.
Owner:ARRIS INT
Compact millimeter wave packages with integrated antennas
ActiveUS20100327068A1Simultaneous aerial operationsSemiconductor/solid-state device detailsEngineeringIntegrated antenna
A radio-frequency integrated circuit chip package has at least one integrated antenna. The package includes at least one generally planar ground plane formed with at least one slot therein. A first substrate structure has an outer surface and an inner surface. The at least one generally planar ground plane is formed on the outer surface of the first substrate structure. At least one feed line is spaced inwardly from the ground plane and parallel thereto. The at least one feed line has an inner surface and an outer surface and is a transmission line formed on the inner surface of the first substrate structure with the outer surface of the at least one feed line adjacent the inner surface of the first substrate structure. At least one radio frequency chip is coupled to the feed line and the ground plane. A second substrate structure, spaced inwardly from the feed line, defines a chip-receiving cavity. The chip is located in the chip-receiving cavity. The inner surface of the at least one feed line borders the chip-receiving cavity. An antenna patch may be provided. Planar phased array embodiments, assemblies with motherboards and heat sinks, and fabrication techniques are also disclosed.
Owner:GLOBALFOUNDRIES US INC +1
Triaxial antenna for microwave tissue ablation
ActiveUS20050245919A1Easy to adjustReduce reflected energyElectrotherapySurgical instruments for heatingMicrowaveTissue ablation
An improved antenna for microwave ablation uses a triaxial design which reduces reflected energy allowing higher power ablation and / or a smaller diameter feeder line to the antenna.
Owner:WISCONSIN ALUMNI RES FOUND
Microwave energy-delivery device and system
A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.
Owner:TYCO HEALTHCARE GRP LP
Printed antenna structure
InactiveUS6924768B2Reduce antenna sizeShorten the lengthSimultaneous aerial operationsAntenna supports/mountingsDriver circuitGround plane
The present invention discloses a printed antenna structure. The printed antenna structure comprises: a dielectric layer having opposed surfaces, a ground plane layer covered on the first surface of the dielectric layer, a feed-line extending over the second surface of the dielectric layer and connecting to a driving circuitry, a primary radiating element connected to the feed-line and not extending over to the ground plane layer, and a tuning element connected to the primary radiating element and not extending over to the ground plane layer for adjusting the radiating frequency. The timing element her comprises two stubs each having a free end spaced apart from each other and a fixed end connected to the primary radiating element so as to reduce the overall length of the printed antenna.
Owner:REALTEK SIMICONDUCTOR
Variable dielectric constant-based antenna and array
ActiveUS7466269B2Improve conversion efficiencySmall and simple and inexpensive to manufactureSimultaneous aerial operationsAntenna supports/mountingsDielectricResonance
Owner:HAZIZA DEDI DAVID D +3
Methods and systems providing adaptive feeder links for ground based beam forming and related systems and satellites
InactiveUS20060211419A1Multiplex communicationRadio/inductive link selection arrangementsCommunications systemTime segment
A method of operating a communications system including a satellite may include providing communications feeder links between the satellite and a plurality of satellite gateways, and providing a communications service link between the satellite and at least one radioterminal using a plurality of satellite service link antenna feed elements. During a first time period, signals of first and second service link antenna feed elements of the plurality of service link antenna feed elements may be coupled between a first one of the plurality of satellite gateways and the first and second service link antenna feed elements. During a second time period, a signal of the first service link antenna feed element may be coupled between the first satellite gateway and the first service link antenna feed element, and a signal of the second service link antenna feed element may be coupled between a second one of the plurality of satellite gateways and the second service link antenna feed element. Related communications systems and satellites are also discussed.
Owner:ATC TECH LLC
Satellite communications systems and methods with distributed and/or centralized architecture including ground-based beam forming
ActiveUS20060205347A1Active radio relay systemsRadio/inductive link selection arrangementsCommunications systemAntenna element
A space-based component (SBC) of a communications system includes a service link subsystem including a plurality of service link antenna elements configured to provide service links with radioterminals and a feeder link subsystem configured to provide respective feeder links to / from respective processing facilities. The SBC further includes a channelizer configured to map different spectral components of a signal received at the SBC via a service link antenna element to different feeder links.
Owner:ATC TECH LLC
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