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1873 results about "Antenna feed" patented technology
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In telecommunications and electronics, an antenna feed refers to the components of an antenna which feed the radio waves to the rest of the antenna structure, or in receiving antennas collect the incoming radio waves, convert them to electric currents and transmit them to the receiver. Antennas typically consist of a feed and additional reflecting or directive structures (such as a parabolic dish or parasitic elements) whose function is to form the radio waves from the feed into a beam or other desired radiation pattern.
Wideband circularly polarized hybrid dielectric resonator antenna
ActiveUS8928544B2High bandwidthCompact geometryAntenna supports/mountingsAntennas earthing switches associationDielectric resonator antennaPhase difference
The present invention provides a dielectric resonator antenna comprising: a dielectric resonator; a ground plane, operatively coupled with the dielectric resonator, the ground plane having four slots; and a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines; wherein the four slots are constructed and geometrically arranged to ensure proper circular polarization and coupling to the dielectric resonator; and wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band.
Owner:HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINIST OF NAT DEFENCE OF HER MAJESTYS CANADIAN GOVERNMENT
Coaxial horn antenna system
An antenna feed system includes a plurality of RF horn antennas (201, 202) for operating on a plurality of RF frequency bands. A first one of the feed horns (202) can have a boresight axis and is configured for operating at a first one of the frequency bands. A second one of the feed horns (201) is positioned coaxially within the first one of the feed horns (202) and is configured for operating at least at a second one of the frequency bands. Further, the first one of the feed horns (202) is a corrugated horn that has a plurality of corrugations (204) formed on an interior surface defining a profile. The profile extends substantially from a throat (205) of the first feed horn and along a tapered portion of the first feed horn. The profile substantially minimizes an interaction of the corrugations with the second feed horn.
Owner:NORTH SOUTH HLDG
Multiband waveguide reflector antenna feed
A multiband waveguide reflector antenna feed comprises waveguide feeds in a concentric architecture. A waveguide feed is located in the center and coaxial waveguide feeds are disposed around the center feed. The waveguide feeds may be all-metallic with the center feed operating in a TE11 mode and the coaxial feeds operating in a coaxial TE11 mode. The waveguide feeds may have electromagnetic band gap (EBG) surfaces on waveguide surfaces. The center waveguide feed may have an EBG outer conductor surface and operate in a circular waveguide TEM mode. The coaxial waveguide feeds may have EBG inner and outer conductors and operate in a circular waveguide TEM mode. The coaxial feeds may have EBG inner conductors and near perfect electrical conductor (PEC) outer conductors and operate in a circular waveguide-like TE11 mode or may comprise EBG outer conductors and PEC inner conductors and operate in a quasi-TEM waveguide mode.
Owner:ROCKWELL COLLINS INC
Small wave-guide radiators for closely spaced feeds on multi-beam antennas
Owner:PRO BRAND INT
Beam shaping of RF feed energy for reflector-based antennas
A beam-shaping element is provided to shape RF feed energy for reflector-based antennas. The RF beam-shaping element is located between the primary reflector and the antenna feed and configured to direct RF energy from the feed away from a blockage created by the feed itself towards unblocked regions of the primary reflector. The beam-shaping element allows for a simplified feed design. The feed may comprise one or more feed elements, each comprising a radiating element and a feed to the radiating element such as a cavity-backed slot radiator and stripline trace. In a monopulse tracking system, each quadrant may include only a single feed element. In common aperture systems, the RF beam-shaping element may be formed on only the rear surface of the secondary reflector that allows transmission at the predefined RF wavelength while reflecting energy of a second predetermined wavelength to another sensor.
Owner:RAYTHEON CO
Dynamic polarization and coupling control from a steerable cylindrically fed holographic antenna
ActiveUS20150236412A1Improve performanceNon-resonant long antennasParallel-plate/lens fed arraysAntenna feedPhysics
An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.
Owner:KYMETA
Microwave antenna and outer cover thereof
ActiveCN101958461AImproved radiation F/B performanceHigh gainRadiating element housingsPhase retardationMicrowave
The invention discloses a microwave antenna and an outer cover thereof. The outer cover is a rotational symmetric element which comprises a plurality of homocentrically arranged parts as below: a compensation part arranged at the middle of the outer cover and used for compensating the phase delay of the electric field distribution at the middle of an antenna aperture surface caused by the shielding of a feed source, a main reflection part arranged at the periphery of the compensation part and used for reflecting the electromagnetic wave emitted from the microwave antenna feed source to a specific direction deviating from the feed source, and an assistant reflection part arranged at the periphery of the main reflection part and used for carrying out reflex bunching on the edge diffraction electromagnetic wave of the microwave antenna. All the parts of the outer cover are especially designed and shaped, therefore the microwave antenna has the characteristics of excellent electrical properties, stable structure, low cost and the like.
Owner:COMBA TELECOM SYST (GUANGZHOU) LTD
Agile Diverse Polarization Multi-Frequency Band Antenna Feed With Rotatable Integrated Distributed Transceivers
ActiveUS20140057576A1Agile polarization diversityImprove antenna efficiencyWaveguide hornsSimultaneous aerial operationsTransceiverAxial ratio
A compact, agile polarization diversity, multiple frequency band antenna with integrated electronics for terrestrial terminal use in satellite communications systems is disclosed. The antenna includes an antenna feed having highly integrated microwave electronics that are mechanically and electromagnetically coupled thereto in a distributed arrangement so that diverse polarization senses having a low axial ratio and electronic switching control of the polarization senses is provided. The arrangement of the integrated distributed transceiver configuration enables the mechanical rotation of the orientation of a first transceiver for skew alignment while a second transceiver remains stationary relative to the antenna feed assembly. The first transceiver can be a high-band transmitter and receiver pair that supports linear polarization senses and the second transceiver can be a low-band transmitter and receiver pair that supports circular polarization senses. The antenna system presented is highly compact and offers improved polarization performance previously achievable by only larger devices.
Owner:KVH IND INC
Wireless repeater with feedback suppression features
InactiveUS20060205343A1Improve server-donor feedback suppressionSmall and portableTransmission systemsActive radio relay systemsElectrical conductorWireless repeater
A wireless repeater with features that improve the server-donor antenna isolation including multi-purpose server and donor mounting plates that each carry an antenna feed circuit board and associated antenna elements mounted in a back-to-back arrangement with the duplex repeater electronics board sandwiched between the server and donor mounting plates. To improve the server-donor antenna isolation, one or both mounting plates may include corner, side tabs, which may be asymmetric, and raised walls around one or both mounting plates. In addition, the radomes covering the donor antenna and / or the server antennas may carry one or more parasitic conductors, such as a two parasitic strips arranged in parallel lines or for parasitic strips arranged in a square configuration.
Owner:ANDREW CORP
Compact, low profile, single feed, multi-band, printed antenna
InactiveUS6856294B2Low profileHigh bandwidthSimultaneous aerial operationsAntenna supports/mountingsMulti bandCapacitance
Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit / receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.
Owner:LAIRDTECH INC
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
Antenna of small dimensions
InactiveUS20040017318A1Improve operationAvoid radiationSimultaneous aerial operationsAntenna supports/mountingsRadiating elementAntenna feed
The invention relates to an antenna of small dimensions. According to an embodiment, the antenna comprises: a radiating element in the form of a plate; an antenna feed connected to the radiating element; a conductive surface substantially parallel to the radiating element and placed at a distance e from the element, the conductive surface being provided with at least one slot facing the radiating element; and a conductive connection between the conductive surface and the radiating element.
Owner:AMPHENOL SOCAPEX
Integrated, closely spaced, high isolation, printed dipoles
ActiveUS20060262026A1Improve antenna isolationReduce electromagnetic couplingSimultaneous aerial operationsRadiating elements structural formsTransceiverNon symmetric
An antenna configuration includes two closely spaced antennas each positioned so as to be orthogonally polarized with respect to the other. The antenna configuration increases antenna isolation and reduces electromagnetic coupling between donor side antenna and repeat side antenna. The antennas include printed dipoles connected to respective transceivers through respective baluns to balance the non-symmetrical portions of the antenna feed paths to reduce unwanted radiation therein. Printed features such as chokes and non-symmetrical and non-parallel structures are preferably included in the ground plane of a multi-layer circuit board to reduce or eliminate circulating ground currents.
Owner:QUALCOMM INC
Antenna for mobile communication terminals
ActiveUS20080129612A1Simultaneous aerial operationsAntenna supports/mountingsGround plateAntenna feed
An antenna comprising: a first substantially planar ground plate; a first substantially planar resonator positioned in a plane substantially parallel to the first ground plate; a second substantially planar ground plate positioned in a plane substantially parallel to the first ground plate; two or more connectors for electrically connecting the second ground plate to ground; and one or more connectors for electrically connecting the first resonator to the second ground plate; wherein the first resonator and the second ground plate are connected to at least one of receiver means and transmitter means by antenna feeding means.
Owner:RPX CORP
Electronic device and tunable antenna system
ActiveCN102394372ASimultaneous aerial operationsAntenna supports/mountingsTransceiverAntenna element
An electronic device (10) has wireless communications circuitry (34) including an adjustable antenna system (40) coupled to a radio-frequency transceiver (90). The adjustable antenna system (40) may include one or more adjustable electrical components (168) that are controlled by storage and processing circuitry (28) in the electronic device (10). The adjustable electrical components (168) may include switches and components that can be adjusted between numerous different states. The adjustable electrical components (168) may be coupled between antenna system components such as transmission line elements (140), matching network elements (152), antenna elements (160) and antenna feeds. By adjusting the adjustable electrical components, the storage and processing circuitry (28) can tune the adjustable antenna system (40) to ensure that the adjustable antenna system (40) covers communications bands of interest.
Owner:APPLE INC
RF front-end apparatus in a TDD wireless communication system
An RF front-end apparatus in a TDD wireless communication system is provided. In the RF front-end apparatus, a detector is provided at a predetermined position in a signal path, and detects a signal propagating in the signal path. A circulator provides a signal received from a power amplifier to an antenna feed line and a signal received from the antenna feed line to a switch. A switch controller generates a control signal based on the signal received from the detector and a switch on / off signal received from a control board. The switch, which is disposed at an input port of an LNA, switches on / off according to the control signal received from the switch controller.
Owner:SAMSUNG ELECTRONICS CO LTD
Broadband antenna with multiple associated patches and coplanar grounding for RFID applications
InactiveUS20090295645A1Control and improveEasy to shapeSimultaneous aerial operationsRadiating elements structural formsEngineeringBroadband
Described herein is an antenna for use with a radio frequency identification system, the antenna including a reference ground; an antenna feed; a primary patch antenna element for mid-field transmission and reception of one of HP and UHF signals, wherein the primary patch antenna element is electrically coupled to the antenna feed; and one or more additional patch antenna elements for mid-field transmission and reception of the one of HF and UHF broadband signals, wherein each of the one or more additional patch antenna elements is electrically connected to an edge of the primary patch antenna element for transmission and reception of the one of HF and UHF signals. The one or more additional patch antenna elements provide for gain enhancement of the one of HF and UHF signals.
Owner:TYCO FIRE & SECURITY GMBH
Front-end Circuit for Band Aggregation Modes
ActiveUS20140329475A1Spatial transmit diversityDuplex signal operationCommunication unitOperation mode
A front-end circuit for a wireless communication unit includes at least two antenna feeds. At least one of the antennas is coupled to an antenna switch. The circuit comprises filters and duplexers and is prepared to operate a number of FDD frequency bands. Each FDD band comprises an Rx band for receive signals and a Tx band for transmit signals. The circuit provides a single band operation mode for each frequency band and aggregated band operation modes. In an aggregated band operation mode Rx signals can be received in two different frequency bands at the same time as well as Tx signals can be transmitted in at least one of the two different frequency bands. In addition, TDD bands as well as GSM bands are covered.
Owner:SNAPTRACK
Antenna component and methods
InactiveUS20080088511A1High dielectric constantEfficient preparationSimultaneous aerial operationsRadiating elements structural formsElectrical conductorDielectric substrate
An antenna component (200) with a dielectric substrate and two radiating antenna elements. The elements are located on the upper surface of the substrate and there is a narrow slot (260) between them. The antenna feed conductor (241) is connected to the first antenna element (220), which is connected also to the ground by a short-circuit conductor (261). The second antenna element (230) is parasitic; it is galvanically connected only to the ground. The component is preferably manufactured by a semiconductor technique by growing a metal layer e.g. on a quartz substrate and removing a part of it so that the antenna elements remain. In this case the component further comprises supporting material (212) of the substrate chip. The antenna component is very small-sized because of the high dielectricity of the substrate to be used and mostly because the slot between the antenna elements is narrow. The efficiency of an antenna made by the component is high.
Owner:PULSE FINLAND
Customizable antenna feed structure
ActiveUS20130050046A1Electronic circuit testingAntennas earthing switches associationContact padManufacturing variation
Custom antenna structures may be used to compensate for manufacturing variations in electronic device antennas. An antenna may have an antenna feed and conductive structures such as portions of a peripheral conductive electronic device housing member. The custom antenna structures compensate for manufacturing variations that could potentially lead to undesired variations in antenna performance. The custom antenna structures may make customized alterations to antenna feed structures or conductive paths within an antenna. An antenna may be formed from a conductive housing member that surrounds an electronic device. The custom antenna structures may be formed from a printed circuit board with a customizable trace. The customizable trace may have a contact pad portion on the printed circuit board. The customizable trace may be customized to connect the pad to a desired one of a plurality of contacts associated with the conductive housing member to form a customized antenna feed terminal.
Owner:APPLE INC
Wideband circularly polarized hybrid dielectric resonator antenna
ActiveUS20120212386A1High bandwidthCompact geometryPolarised antenna unit combinationsAntennas earthing switches associationDielectric resonator antennaPhase difference
The present invention provides a dielectric resonator antenna comprising: a dielectric resonator; a ground plane, operatively coupled with the dielectric resonator, the ground plane having four slots; and a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines; wherein the four slots are constructed and geometrically arranged to ensure proper circular polarization and coupling to the dielectric resonator; and wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band.
Owner:HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINIST OF NAT DEFENCE OF HER MAJESTYS CANADIAN GOVERNMENT
Antenna for mobile communication terminals
An antenna including: a first substantially planar ground plate; a first substantially planar resonator positioned in a plane substantially parallel to the first ground plate; a second substantially planar ground plate positioned in a plane substantially parallel to the first ground plate; two or more connectors for electrically connecting the second ground plate to ground; and one or more connectors for electrically connecting the first resonator to the second ground plate; wherein the first resonator and the second ground plate are connected to at least one of receiver means and transmitter means by antenna feeding means.
Owner:RPX CORP
Inverted feed discone antenna and related methods
InactiveUS7286095B2High bandwidthLess complicated feed attachmentSimultaneous aerial operationsRadiating elements structural formsCoaxial cableEngineering
The discone antenna includes a conical antenna element, having an apex, and a disc antenna element adjacent the apex of the conical antenna element. An inverted antenna feed structure, such as a flanged coaxial connector or coaxial cable, is connected to the disc and conical antenna elements and extends outwardly from the disc antenna element on a side thereof opposite the apex of the conical antenna element. The discone antenna with such an inverted feed structure facilitates an inverted positioning, for example, on vehicles, rooftops and / or control towers, etc., that will increase the bandwidth pattern in the direction of the potential target.
Owner:HARRIS CORP
RF front-end apparatus in a TDD wireless communication system
A transmitting apparatus in a TDD wireless communication system is provided. In the transmitting apparatus, a circulator transmits a signal received from a power amplifier to an antenna feed line and transmits a signal received from the antenna feed line to a quarter-wave transmission line. The quarter-wave transmission line is installed in a reception path, for reception isolation in a transmission mode. An RF switch shorts the load of the quarter-wave transmission line to the ground or connects the load of the quarter-wave transmission line to an LNA according to a control signal. The LNA low-noise-amplifies a signal received from the RF switch.
Owner:SAMSUNG ELECTRONICS CO LTD
Anisotropic metamaterial gain-enhancing lens for antenna applications
ActiveUS20120280872A1Improve directionalityImproving collimation and directivityAntennasLight beamWide band
Examples of the present invention include metamaterials, including metamaterial lenses, having material properties that approximate the behavior of a material with low (0<n<1) effective index of refraction. Metamaterials may be designed and tuned using dispersion engineering to create a relatively wide-band low-index region. A low-index metamaterial lens created highly collimated beams in the far-field from a low-directivity antenna feed.
Owner:PENN STATE RES FOUND
Apparatus for tuning multi-band frame antenna
A multi-band frame antenna is used for LTE, MIMO, and other frequency bands. The frame antenna includes a conductive block and a metallic frame with no gaps or discontinuities. The conductive block functions as a system ground and has at least one electronic component mounted on the surface. The outer perimeter of the metallic frame surrounds the conductive block, and there is a gap between the metallic frame and the conductive block. One or more antenna feeds are routed across the gap, between the metallic frame and the conductive block. One or more connections can be made across the gap, and at least one electronic element connects the conductive block to the metallic frame.
Owner:SONY CORP
Antenna feed network for full duplex communication
InactiveUS20090028074A1Improve isolationInadequately filteredTransmission control/equalisingCode division multiplexWireless transmissionPhase difference
The present invention provides a wireless device for effecting two way wireless transmission, an antenna feed network (20), and a patch antenna. The wireless device includes an antenna assembly having first and second feed inputs (7 and 8) and accepting first and second antenna feed signals shifted a feed signal phase difference apart. The antenna assembly (9) receives radiated signals and produces a first received signal and second received signal at the first and second feed inputs (7 and 8). First and second reflected feed signals are also produced at the first and second feed inputs (7 and 8). A transmitter produces a transmission signal and a receiver receives a received signal composed of at least a portion of the at least one of the first and second received signals from the antenna assembly (9) while the transmission signal is being transmitted by the antenna assembly (9). The antenna feed network (20) interconnects the transmitter port (2), the receiver port (5), and the antenna assembly (9) to apply the transmission signal to the first and second feed inputs (7 and 8) and to simultaneously receive at least one of the first and second received signals from the first and second feed inputs (7 and 8) and produce the received signal therefrom while effecting cancellation of the first and second reflected feed signals.
Owner:KNOX MICHAEL E
Circular polarity elliptical horn antenna
Owner:PRO BRAND INT
Mobile terminal antenna system and mobile terminal
ActiveCN105514624ASolve the problem of taking up more spaceSave spaceRadiating elements structural formsAntenna equipments with additional functionsComputer terminalInductor
The invention discloses a mobile terminal antenna system and a mobile terminal. The antenna system comprises a metal frame of the mobile terminal, an NFC feed source, a first matching circuit, a diversity antenna feed source, a second matching circuit, a zeroth inductor and reference ground; at least two slots are formed in the metal frame; a metal frame section between any adjacent slots is a first metal frame; the NFC feed source is connected with the first metal frame through the first matching circuit; the diversity antenna feed source is connected with the first metal frame through the second matching circuit; one end of the zeroth inductor is connected with the first metal frame, and the other end of the zeroth inductor is grounded; the NFC feed source, the first matching circuit, the first metal frame, the zeroth inductor and the reference ground form an NFC antenna system; the diversity antenna feed source, the second matching circuit and the first metal frame form a diversity antenna system; and the NFC antenna system and the diversity antenna system share the first metal frame as an antenna radiating body. With the mobile terminal antenna system of the invention adopted, the problems of large occupied space and high cost of a mobile terminal built-in antenna can be solved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Antenna device of mobile terminal and mobile terminal
ActiveCN105826652AReduce absorptionLow costAntenna supports/mountingsAntennas earthing switches associationAntenna feedMotherboard
Owner:VIVO MOBILE COMM CO LTD
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