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3849results about "Resonant antennas" patented technology
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Communication System
A communication system includes a transmitter including a transmission circuit unit that generates an RF signal for transmitting data and an electric-field-coupling antenna that transmits the RF signal as an electrostatic field, a receiver including an electric-field-coupling antenna and a reception circuit unit that subjects an RF signal received by the electric-field-coupling antenna to reception processing, and a surface-wave propagating means for providing a surface wave transmission line made of a conductor that propagates a surface wave radiated from the electric-field-coupling antenna of the transmitter along a surface of the surface wave transmission line.
Owner:SONY CORP
Wireless non-radiative energy transfer
The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.
Owner:MASSACHUSETTS INST OF TECH
Wireless non-radiative energy transfer
ActiveUS20090195333A1Near-field transmissionElectromagnetic wave systemEnergy transferSoftware engineering
The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.
Owner:MASSACHUSETTS INST OF TECH
Wireless non-radiative energy transfer
The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.
Owner:MASSACHUSETTS INST OF TECH
Meta-element antenna and array
An antenna having at least one main element and a plurality of parasitic elements. At least some of the elements have coupling elements or devices associated with them, the coupling elements or devices being tunable to thereby control the degree of coupling between adjacent elements. Controlling the degree of coupling allows a lobe associated with the antenna to be steered.
Owner:HRL LAB
Wireless non-radiative energy transfer
The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.
Owner:MASSACHUSETTS INST OF TECH
Phased array metamaterial antenna system
ActiveUS6958729B1Reduce sidelobeIncrease amplitude performanceSimultaneous aerial operationsRadiating elements structural formsSolid substratePhased array
An efficient, low-loss, low sidelobe, high dynamic range phased-array radar antenna system is disclosed that uses metamaterials, which are manmade composite materials having a negative index of refraction, to create a biconcave lens architecture (instead of the aforementioned biconvex lens) for focusing the microwaves transmitted by the antenna. Accordingly, the sidelobes of the antenna are reduced. Attenuation across microstrip transmission lines may be reduced by using low loss transmission lines that are suspended above a ground plane a predetermined distance in a way such they are not in contact with a solid substrate. By suspending the microstrip transmission lines in this manner, dielectric signal loss is reduced significantly, thus resulting in a less-attenuated signal at its destination.
Owner:LUCENT TECH INC
Beam scanning antennas with plurality of antenna elements for scanning beam direction
An array antenna is formed of a plurality of antenna elements, each of which scans a beam in the direction of an angle theta to a boresight of the antenna and electrically varies the direction of a rotation angle phi of the beam. The antenna elements are disposed so that the optical path difference of radio waves transmitted or received by two adjacent antenna elements in the directions of a plurality of direction angles phi on the plane tilted for an angle theta to the boresight of the antenna is nearly a multiple of the wave length of the radio waves.
Owner:KK TOSHIBA
Communication System and Communication Apparatus
A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an electric-field-coupling antenna configured to transmit the RF signal as an electrostatic field; a receiver including an electric-field-coupling antenna and a reception circuit unit configured to receive and process the RF signal received by the electric-field-coupling antenna; and a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss.
Owner:SONY CORP
Communication system and communication apparatus
A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an electric-field-coupling antenna configured to transmit the RF signal as an electrostatic field; a receiver including an electric-field-coupling antenna and a reception circuit unit configured to receive and process the RF signal received by the electric-field-coupling antenna; and a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss.
Owner:SONY CORP
Communication system
Owner:SONY CORP
Multi-band planar antenna
InactiveUS6911945B2Easy to manufactureImprove matchSimultaneous aerial operationsAntenna supports/mountingsMulti bandRadio equipment
A multi-band planar antenna applicable as an internal antenna in small-sized mobile stations, and to a radio device including an antenna according to the invention. The basis is a conventional dual band PIFA with its feeding and shorting conductors and a non-conducting slot. The planar element (220) has a second slot (232) known as such, which starts at the edge of the planar element on the other side of the feeding conductor (221) and shorting conductor (211) than the above-mentioned slot (231). In addition the structure comprises a second shorting conductor (212) on the other side of the second slot, than the feeding conductor. The second slot acts as a radiator, which for instance broadens the upper band of a dual band antenna. The second shorting conductor facilitates a better matching of a multi-band antenna than in corresponding prior art antennas. The antenna is simple, and its manufacturing costs are relatively low.
Owner:CANTOR FITZGERALD SECURITIES
Tile sub-array and related circuits and techniques
ActiveUS20080074324A1Lower acquisition and life cycle costs of phased arraysLow costSimultaneous aerial operationsRadiating elements structural formsWaveguideHeat spreader
A radiator includes a waveguide having an aperture and a patch antenna disposed in the aperture. In one embodiment, an antenna includes an array of waveguide antenna elements, each element having a cavity, and an array of patch antenna elements including an upper patch element and a lower patch element disposed in the cavity.
Owner:RAYTHEON CO
Wideband dielectric resonator antenna
InactiveUS20080278378A1Easy to manufactureReduces attrition rateSimultaneous aerial operationsRadiating elements structural formsDielectric resonator antennaGround plane
Owner:NAT TAIWAN UNIV
Dual Band Stacked Patch Antenna
InactiveUS20090058731A1Reduce manufacturing costHigh gainSimultaneous aerial operationsRadiating elements structural formsDual frequencyDual band antenna
One or more of the embodiments of a dual band stacked patch antenna described herein employ an integrated arrangement of a global positioning system (GPS) antenna and a satellite digital audio radio service (SDARS) antenna. The dual band antenna receives right hand circularly polarized GPS signals in a first frequency band, left hand circularly polarized SDARS signals in a second frequency band, and vertical linear polarized SDARS signals in the second band. The dual band antenna includes a ground plane element, an upper radiating element (which is primarily utilized to receive SDARS signals), dielectric material between the ground plane element and the upper radiating element, and a lower radiating element (which is primarily utilized to receive GPS signals) surrounded by the dielectric material. The dual band antenna uses only one conductive signal feed to receive both GPS and SDARS signals.
Owner:GM GLOBAL TECH OPERATIONS LLC
Dual band, low profile omnidirectional antenna
InactiveUS7042403B2Simultaneous aerial operationsAntenna supports/mountingsOmnidirectional antennaDual band antenna
A low-profile dual-band antenna includes a ground plane. An “E”-shaped metal plate is located a first distance from the ground plane and includes first and second outer extensions and an inner extension of the metal plate. A feed tab connects the inner extension and the ground plane. A shorting tab connects the inner extension and the ground plane. The low-profile dual-band antenna communicates first radio frequency (RF) signals in a first RF band and second RF signals in a second RF band. The first RF signals and the second RF signals are vertical polarized signals. The low-profile dual-band antenna produces a radiation pattern that is omnidirectional in the azimuth plane and vertically polarized in a horizontal plane when communicating the first RF signals and the second RF signals. The first RF band and the second RF band can be independently tuned.
Owner:GM GLOBAL TECH OPERATIONS LLC
Antenna arrays formed of spiral sub-array lattices
InactiveUS6842157B2Improve bindingWider antenna bandwidthSimultaneous aerial operationsRadiating elements structural formsEngineeringGrating lobe
A antenna array (20) includes a plurality of periodic or aperiodic arranged sub-arrays (22). Each sub-array (22) includes a plurality of antenna elements (32) arranged in the form of a spiral (30). The sub-arrays (22) can comprise various spiral shapes to provide the required physical configuration and operational parameters to the antenna array (20). The elements (32) of each sub-array (22) are arranged to minimize the number of such elements (32) that intersect imaginary planes perpendicular to the spiral and passing through the spiral center. Such an orientation of the elements (32) minimizes grating lobes in the antenna pattern.
Owner:HARRIS CORP
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
Subscriber based smart antenna
InactiveUS6229486B1Cost effectiveReduce distractionsSimultaneous aerial operationsAntenna supports/mountingsSystem capacitySignal quality
Owner:KRILE DAVID JAMES
Low cost multi-beam, multi-band and multi-diversity antenna systems and methods for wireless communications
ActiveUS7075485B2Low costImprove performanceSimultaneous aerial operationsAntenna supports/mountingsMulti bandCommunications system
Systems and methods for employing switched phase shifters and a feed network to provide a low cost multiple beam antenna system for wireless communications. The present systems and methods may also facilitate multi-band communications and employ multi-diversity. The present systems and methods allow communication systems to achieve enhanced performance for communication or other services such as location tracking. The present systems and methods may employ switched phase shifters, multiple diversity antennas and / or a feed network having a multi-layer construction to provide an antenna system with low losses, low external component count and / or which is thin and compact.
Owner:HONG KONG APPLIED SCI & TECH RES INST
Multi-band antenna with wide bandwidth
InactiveUS7333067B2Wide bandwidthCompact configurationSimultaneous aerial operationsAntenna supports/mountingsMulti bandImpedance matching
A multi-band antenna (100) used in wireless communications includes a first radiating patch (20) arranged in a first plane and extending in a first direction, a second radiating patch (22) arranged in the first plane and extending in a second direction different from the first direction, a grounding portion (1) arranged in second plane parallel to the first plane, and an inverted F-shaped connecting portion (3) connecting the first and the second radiating patches and the grounding portion. The radiating patches define a plurality of slots (201, 202) for increasing a bandwidth of the antenna. The connecting portion defines a rectangular slot (35) for adjusting an impedance matching of the antenna.
Owner:HON HAI PRECISION IND CO LTD
Multi-band antenna
ActiveUS7148849B2Excellent high-frequency characteristic and electromagnetic compatibilityMiniaturizationSimultaneous aerial operationsAntenna supports/mountingsMulti bandImpedance matching
A multi-band antenna having a low frequency operating band and a high frequency operating band is provided. The multi-band antenna includes a radiating element, a grounding plane, a short-circuiting element and a short-circuiting regulator. The radiating element has a feed-in point for transmitting signals and several radiation arms. The first and the second radiation arms respectively have a first resonant mode and a second resonant mode which jointly generate a high frequency operating band, while the third radiation arm has a third resonant mode which generates a low frequency operating band. The grounding plane is connected to the radiating element via the short-circuiting element to miniaturize the scale of the antenna. The short-circuiting regulator of the grounding plane enhances the impedance matching when high frequency resonance occurs.
Owner:QUANTA COMPUTER INC
Dielectric-resonator array antenna system
InactiveUS20060082516A1Simultaneous aerial operationsAntenna adaptation in movable bodiesDielectric resonator antennaLight beam
A dielectric resonator element array (DRA) antenna system and method for using same is disclosed. The dielectric resonator antenna system includes a ground plain, a feed structure, an array of dielectric resonator elements electrically coupled to the feed structure, each dielectric element having a relatively high permittivity, a radome close to or in contact with the array of dielectric resonator elements, an object mounting apparatus for mounting the antenna system on an object, and a beam shaping and steering controller, the beam shaping and steering controller controlling the feed structure to thereby control excitation phases of the dielectric resonator elements.
Owner:STRICKLAND PETER C
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
Dual band electrically small tunable antenna
InactiveUS8629811B2Simultaneous aerial operationsRadiating elements structural formsDual frequencyMicrostrip patch antenna
An electrically small dual-band planar tunable UHF / L-Band antenna. In one example, the dual-band antenna includes a combination of a semi-spiral antenna for the UHF frequencies and a microstrip patch antenna for the L-band frequencies.
Owner:CHARLES STARK DRAPER LABORATORY
Planar Inverted-F-Antenna (PIFA) having a slotted radiating element providing global cellular and GPS-bluetooth frequency response
InactiveUS6741214B1Simultaneous aerial operationsAntenna supports/mountingsPlanar inverted f antennaResonance
Owner:LAIRDTECH INC
Handheld device with two antennas, and method of enhancing the isolation between the antennas
ActiveUS20090262028A1Avoid less flexibilityDistance minimizationSimultaneous aerial operationsAntenna supports/mountingsHand held devicesSlot antenna
The invention relates to a handheld device comprising a first antenna (401, 701, 901, 931, 961, 1101, 1151, 1301, 1501) arranged to operate in at least a first frequency band, and a second antenna (402, 702, 902, 1102, 1302, 1502, 2210) arranged to operate in at least a second frequency band, wherein said second frequency band is different from said first frequency band. According to the invention, the second antenna comprises a slot antenna comprising at least one slot in at least one conductive layer. The invention also relates to enhancement of the isolation between first and second antennas in a handheld device.
Owner:FRACTUS
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
Multi-receiver communication system with distributed aperture antenna
InactiveUS20070176840A1Reduce distanceEqually distributedNear-field transmissionWeight reductionCommunications systemEngineering
A multi-user wireless communication system for use in an enclosed space includes a distributed aperture antenna having multiple apertures distributed along an outer shield of the antenna. The apertures allow radiated energy to leak from the antenna and form low-power, localized electric fields that can couple receivers to the antenna. The multiple electric fields ensure that the electric field strength is distributed evenly throughout the communication system. The low-power electric fields also reduce the likelihood of electric field leakage that may cause interference with other communication systems outside the enclosed space.
Owner:HAMILTON SUNDSTRAND CORP
Antenna having a reflector for improved efficiency, gain, and directivity
InactiveUS20160181701A1Improve radiation efficiencySimultaneous aerial operationsResonant antennasAntenna designConductive materials
An antenna having at least one reflector for improving radiation efficiency, gain, and directivity is disclosed. The antenna may be formed on a substrate or be a standalone conductive material that is designed to operate in at least one band of frequency. The antenna includes a reflector for each band of frequency the antenna is designed to operate in. The reflector is positioned relative to the antenna to redirect electromagnetic radiation of the antenna away from surrounding materials or objects that affect, i.e., reflect, refract, diffract, absorb and scatter the antenna's electromagnetic radiation.
Owner:SANGARAN PRAGASH +1
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