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200 results about "Reflective array antenna" patented technology
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In telecommunications and radar, a reflective array antenna is a class of directive antennas in which multiple driven elements are mounted in front of a flat surface designed to reflect the radio waves in a desired direction. They are a type of array antenna. They are often used in the VHF and UHF frequency bands. VHF examples are generally large and resemble a highway billboard, so they are sometimes called billboard antennas, or in Britain hoarding antennas. Other names are bedspring array and bowtie array depending on the type of elements making up the antenna. The curtain array is a larger version used by shortwave radio broadcasting stations.
Reflect array antennas having monolithic sub-arrays with improved DC bias current paths
ActiveUS20070090997A1Simultaneous aerial operationsRadiating elements structural formsHeat spreaderActive array
Embodiments of active array antennas are generally described herein. Other embodiments may be described and claimed. In some embodiments, a reflect array antenna includes an array of rectangular monolithic sub-array modules arranged in a non-uniform pattern to leave a plurality of rectangular gaps in the pattern. A DC feed pin located within each gap may provide DC bias current to the sub-array modules. The sub-array modules may be mounted on a heat sink in the non-uniform pattern. The heat sink may have holes aligned with the gaps to allow passage of the DC feed pins. In some embodiments, an array cooling assembly may be coupled to the back of the heat sink to cool the reflect array antenna with a coolant.
Owner:RAYTHEON CO
Cellular reflectarray antenna and method of making same
InactiveUS7791552B1Quick installationSimultaneous aerial operationsRadiating elements structural formsLongitudeLength wave
A method of manufacturing a cellular reflectarray antenna arranged in an m by n matrix of radiating elements for communication with a satellite includes steps of determining a delay φm,n for each of said m by n matrix of elements of said cellular reflectarray antenna using sub-steps of: determining the longitude and latitude of operation, determining elevation and azimuth angles of the reflectarray with respect to the satellite and converting theta0 (θ0) and phi0 (φ0), determining Δβm,n, the pointing vector correction, for a given inter-element spacing and wavelength, determining Δφm,n, the spherical wave front correction factor, for a given radius from the central element and / or from measured data from the feed horn; and, determining a delay φm,n for each of said m by n matrix of elements as a function of Δβm,n and Δφm,n..
Owner:NASA
Reflection array antenna beam scanning antenna based on rotation phase shift surface technology
The invention provides a reflection array antenna beam scanning antenna based on a rotation phase shift surface technology. The reflection array antenna beam scanning antenna comprises a feed source antenna (401) and a reflection array panel (301); the reflection array panel (301) comprises a partial wave beam micro-strip reflection array layer (101) and a high transmittance phase shift surface layer (201); the partial wave beam micro-strip reflection array layer (101) is a micro-strip reflection array panel capable of achieving feed source wave beam deflection and the high transmittance phase shift surface layer (201) is a phase shift surface panel capable of achieving plane wave beam deflection. The partial wave beam micro-strip reflection array layer (101) and the high transmittance phase shift surface layer (201) are stacked through certain air space so that the reflection array panel (301) can be assembled. The positive feeding type is adopted by a feed source antenna (401). The central axis of the reflection array panel (301) serves as an axis and two layers are rotated respectively so that scanning of antenna beams can be achieved. The reflection array antenna beam scanning antenna based on the rotation phase shift surface technology is simple in structure, easy to manufacture, capable of responding to any polarized electromagnetic wave, suitable for sending and receiving the polarized electromagnetic waves and capable of bearing high power.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Millimeter wave folding-type reflective array antenna integrated with plane feed source
ActiveCN103490156AAvoid lossReduce thicknessRadiating elements structural formsPolarised antenna unit combinationsCommunications systemMiniaturization
The invention discloses a millimeter wave folding-type reflective array antenna integrated with a plane feed source. The millimeter wave folding-type reflective array antenna is of a layered structure and is sequentially provided with a polarization grid, a reflective array and the plane feed source from top to bottom. On the basis of a plane substrate integration waveguide structure, a substrate integration waveguide gap array antenna is used as the feed source for conducting feed on folding-type reflection, phase compensation is obtained on a reflection face, spherical waves are converted to plane waves, and therefore the antenna which is high in gain and efficiency and stable in beam pointing is realized. Under the Q-LINKPAN application background and directing at the development demands of a plane-integration and miniaturized long-distance wireless communication system, the low-section antenna which is high in gain and efficiency and capable of being integrated with a plane millimeter wave circuit is realized, the millimeter wave folding-type reflective array antenna has the advantages of being simple in structure, compact in size and low in cost, and the requirements for plane circuit integration are met.
Owner:SOUTHEAST UNIV
Reflective array face and reflective array antenna
ActiveCN102983410AAchieve focusRealize the focus of the reflective array on the incident electromagnetic wave within the predetermined angle rangeAntenna arraysAntenna adaptation in movable bodiesPhase shiftedOptoelectronics
The invention provides a reflective array antenna. The reflective array antenna comprises a reflective array face, and the reflective array face comprises a function board which is used for beam modulating of incidence electromagnetic wave and a reflecting layer which is arranged on one side of the function board and is used for reflecting the electromagnetic wave. The function board comprises two or more function board units. The reflecting layer comprises reflecting units, wherein, the number of the reflecting units corresponds to the number of the function board units. A phase shift unit which is used for shifting phase is formed by each function board unit and each corresponding reflecting unit. The reflective array face has a focusing ability for the incidence electromagnetic wave in a scheduled angle range with a normal direction of the reflective array face. According to the fact that the reflective array antenna has the focusing ability of the incidence electromagnetic wave in the preset angle range, the reflective array antenna is capable of having a plurality of focal points so as to be used for different environment or areas.
Owner:KUANG CHI INNOVATIVE TECH +1
Single pulse wide angle electric scanning reflective array antenna
ActiveCN102593589ACompact structureImprove structural performanceAntennasRadar systemsOptoelectronics
The invention discloses a single pulse wide angle electric scanning reflective array antenna comprising a reconfigurable reflective array surface (1), a polarization grid (2), a bias voltage circuit (3), a wave control machine (4), a control processor (5) and a feed source subsystem (6). The size of the caliber of the polarization grid (2) is equal to that of the caliber of the reconfigurable reflective array surface (1), and the polarization grid (2) is positioned above the reconfigurable reflective array surface (1). A radiation aperture surface of a feed source (61) is parallel and level to the reconfigurable reflective array surface (1) and is positioned at the center of the reflective array surface. The single pulse wide angle electric scanning reflective array antenna adopts a spatial feed mode, that is to say, the feed source irradiates the polarization grid and feeds the array surface after reflection. A polarization grid structure is applied to a reconfigurable reflective array antenna, and the feed source, the polarization grid and the reflective array surface form a double reflective structure, therefore, the performance of an antenna structure is excellent, the antenna structure can facilitate the installation of an antenna port and the connection of the antenna port and a radar system, and the antenna is compact in structure with a low section.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna
InactiveCN103560336AHigh gainImprove antenna efficiencyRadiating elements structural formsPolarised antenna unit combinationsPhase differenceReflected waves
The invention discloses a Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna. A plane medium substrate is provided with two kinds of frequency passive micro-strip resonance units, each kind of frequency units is arranged in equal rows and equal lines, the distance between every two rows is equal to that between every two lines, the distance is less than or equal to one half of the wavelength of the highest work frequency free space, and each second frequency unit is located at the center of every four first frequency units in a square array. The center of all the first frequency units is provided with a set of gaps, the center of all the second frequency units is provided with a set of gaps perpendicular to the gaps of the first frequency units, and polarization in the two perpendicular directions is formed. Each kind of frequency units is of loop line patch structures with at least two layers, and the size of a loop is determined according to the phase position needing compensation. According to the Ku frequency band double-frequency dual-polarization micro-strip plane reflective array antenna, the phase difference between a feed source and the space of each unit on the array surface is compensated by regulating the size of each micro-strip unit on the medium substrate, reflected waves achieve same-phase superposition in the special direction, pencil beams are formed, and the purpose of high gain is achieved.
Owner:BEIJING AEROSPACE FUDAO HIGH TECH
Phase delay linetype reflector element based reflective array antenna
ActiveCN105140655ASuppression of cross-polarization componentsAntennasUltra wideband antennasPhase retardation
The invention provides a phase delay linetype reflector element based reflective array antenna. The reflective array antenna comprises a pyramid horn feed source and a reflector array, wherein the reflector array is formed by periodically arranging a plurality of phase delay linetype reflector elements in a mirror symmetry manner; and the phase delay linetype reflector element structure comprises two slotting circular ring nests and two phase delay lines that are in opposite in positions. The gain bandwidth of the reflector array antenna is greatly increased, an ultra wide band antenna is realized, and cross polarization is effectively restrained as well; and in addition, the reflection array antenna provided by the invention adopts a single-layer dielectric substrate structure, so that the reflector array is simple in structure, easy to process, low in cost and light in weight.
Owner:NAT SPACE SCI CENT CAS
Deployable Reflectarray Antenna Structure
ActiveUS20160197394A1Easy transitionHelp positioningCollapsable antennas meansAntenna supports/mountingsElectrical elementReflective array antenna
Owner:M M A DESIGN
Deployable Structure for Use in Establishing a Reflectarray Antenna
ActiveUS20170093046A1Help positioningEasy to deployCollapsable antennas meansCosmonautic vehiclesPantographWaste management
A deployable structure for use in establishing a reflectarray antenna is provided that includes a flexible reflectarray and a deployment structure that includes an endless pantograph for deploying the flexible reflectarray from a folded, undeployed state towards a deployed state in which the flexible reflectarray is substantially planar. In a particular embodiment, the deployment structure includes a plurality of tapes that engage the endless pantograph and are used to establish a positional relationship between the deployed reflectarray and another component of the reflectarray antenna.
Owner:M M A DESIGN
Broadband foldable reflective array antenna
ActiveCN104901023ASimple structureCompact structurePolarised antenna unit combinationsSlot antennasMicrowaveRadar systems
The invention discloses a broadband foldable reflective array antenna, and belongs to the technical field of antennas. The broadband foldable reflective array antenna employs a foldable reflective array antenna structure, and provides a brand new reflective array unit, so that the foldable reflective array of the reflective array unit solves the problem that breakthrough on gain bandwidth of a conventional foldable reflective array antenna is hard to achieve. The characteristics of high gain, low loss, compact structure and low cross polarization of a foldable reflective array antenna are fully explored. The broadband foldable reflective array antenna is suitable for microwave, millimeter wave, THz frequency ranges and applicable to high performance communication or radar systems.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Rotating unit type double-frequency circular polarization reflective array antenna
InactiveCN103730739ASimple structureLight structurePolarised antenna unit combinationsAntenna couplingsCouplingOptoelectronics
The invention discloses a rotating unit type double-frequency circular polarization reflective array antenna which comprises a circular polarization feed source and a reflective array. The circular polarization feed source comprises an axial mode spiral antenna. The reflective array is formed by a high band unit and a low band unit in an alternating-arraying mode. The high band unit and the low band unit carry out phase compensation in a rotating-band-unit mode, and accordingly the fact that after feed source irradiation, the reflective array can emit identical-phase circular polarization wave beams at the two bands can be guaranteed. A rotating technology is introduced to the units at the two bands on the same layer of array face, and cross coupling between the two bands is effectively lowered. The reflective array is of a single-layer structure, so that the array structure is simple and light.
Owner:XIDIAN UNIV
Dual frequency band dual polarization spaceborne cloud-rain measurement radar system
ActiveCN107643522AAchieve duplexImplement detectionRadio wave reradiation/reflectionICT adaptationExtreme weatherRadar systems
The invention discloses a dual frequency band dual polarization spaceborne cloud-rain measurement radar system which is mainly composed of an antenna subsystem, a radio frequency subsystem, a digitalsubsystem, a monitoring subsystem and a power supply subsystem. The antenna subsystem adopts a parabolic reflector / microstrip reflective array antenna feeder system, and comprises a parabolic reflector / microstrip reflective array antenna, a Ka frequency band active phased array feed source, a W frequency band beam waveguide feed system and a Ka / W frequency band shared parabolic reflector / microstrip reflective array antenna. The radio frequency subsystem is connected with the Ka frequency band active phased array feed source, the W frequency band beam waveguide feed system and the digital subsystem. The digital subsystem is connected with a terminal. The system provided by the invention has the advantages that the three-dimensional vertical structure information of clouds and precipitationin the field of view can be quantitatively acquired; and the acquired global cloud-rain three-dimensional structure data can be applied to three-dimensional high-precision inversion of atmospheric clouds and precipitation, can be applied to global extreme weather monitoring and forecasting, and can be applied to atmospheric science and numerical simulation studies.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Low-scattering plane-reflective array antenna
InactiveCN102117971AGood radiation characteristicsAchieve the purpose of stealthRadiating elements structural formsIndividually energised antenna arraysRadar cross-sectionPhysics
The invention discloses a low-scattering plane-reflective array antenna mainly solving the problem between the radiation characteristic and the low RCS (Radar Cross Section) characteristic of the traditional antenna. The antenna comprises a feed source (1), an upper medium plate (2), a lower medium plate (3), a radiation array (4), a frequency selection surface (5) and a support frame (6), wherein the feed source (1) adopts a rectangular microstrip structure and is fixed above the upper medium plate (2) through the support frame (6); the radiation array (4) is formed by arranging a plurality of hollow square or hollow round radiation units (40) in a round area and printed on the front of the upper medium plate (2); the frequency selection surface (5) is formed by arranging a plurality of same hollow square or hollow round frequency selection units (501) in a rectangular area and printed on the back of the lower medium plate (3); and the upper medium plate is in clearance fixation withthe lower medium plate. Through the low-scattering plane-reflective array antenna, the RCS of the reflective array antenna can be effectively reduced; and the low-scattering plane-reflective array antenna can be directly applied to the invisible design of weapon platforms.
Owner:GUANGDONG MIKWAVE COMM TECH
Split ring metamaterial unit-based dual-frequency circularly polarized plane reflective array antenna
ActiveCN106532274AMeet application needsOverall small sizeRadiating elements structural formsPolarised antenna unit combinationsDielectric substrateMetamaterial
Owner:SHANGHAI RADIO EQUIP RES INST
Deployable reflectarray antenna system
ActiveUS8289221B1Simple but effective deployment mechanismSmall surface areaCollapsable antennas meansSpace fed arraysEngineeringWaveguide
A center-fed deployable reflectarray antenna system comprised of a stack of flat reflectarray panels, a deployment mast, a waveguide, and an antenna feed. The flat reflector in its deployed configuration is subdivided about its center into n equal panels. The stowed configuration has the n panels arranged in a vertical stack with each separated from the next by a small distance. Panel mounting brackets are attached to each panel at the center area where they would have converged in their deployed configuration. The deployment mast is a hollow cylinder with guide slots cut through its wall. The bottom panel is fixedly attached to the bottom of the deployment mast while the remaining panels are moveable attached to the guide slots. The guide slots are designed so that when going from the stacked to the deployed configuration each panel is moved with respect to the fixed panel along its guide slots a predetermined angle at which point it is dropped to the plane of the fixed panel. The waveguide is located along the central axis of the deployment mast and the antenna feed attached to the waveguide at the appropriate distance from the antenna reflector.
Owner:THE UNITED STATES OF AMERICA AS REPRESETNED BY THE SEC OF THE AIR FORCE
Planar high-gain microstrip reflectarray antenna
ActiveCN104362435ASimple structureReduce manufacturing costAntenna arraysAntennas earthing switches associationDipole arrayPhysics
The invention provides a planar high-gain microstrip reflectarray antenna comprising a feed source, a polarized grid and a reflecting surface. The feed source is composed of a 2*2 microstrip patch array. The polarized grid is composed of a printed dipole array. The reflecting surface is in an array unit design composed of 96 reflecting units; a microstrip metal patch layer of each reflecting unit is a square microstrip patch. The polarized grid and the reflecting surface are hinged and fixed through a support of metal posts, so that polarization direction of printed dipoles of the polarized grid is consistent to that of the feed source. In this way, a foldable reflectarray antenna is made. The planar high-gain microstrip reflectarray antenna has the advantages of simplicity in structure and feed, high gain, low profile, high polarization purity and the like; processing is easy, manufacturing cost is low, and the antenna is easily acceptable and producible to processing enterprises.
Owner:天元瑞信通信技术股份有限公司
Dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna
ActiveCN106207468AMeet needsImplement beam scanningWaveguide hornsContinuous scanningDielectric substrate
The invention discloses a dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna. The dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna comprises a dielectric substrate, a reflective structure and an antenna feed source, wherein M*N periodically-arranged metal patch units are etched on the upper surface of the dielectric substrate; M and N are integers, wherein M is greater than 1 and less than 50; N is greater than 1 and less than 50; the reflective structure is positioned on the lower surface of the dielectric substrate; a metal floor structure is adopted; and the antenna feed source is positioned in the upper half space of a radiation structure. By adoption of the dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna, the problem that continuous wave-beam scanning cannot be realized by a conventional microstrip reflective array antenna which can only work in a single-band or single-polarization mode is solved; by employing the metal patch units and variable capacitance diodes, the dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna realizes reconfigurable frequency, reconfigurable polarization and wave-beam continuous scanning, thereby satisfying requirements of a radar and a communication system on multifunctional caliber multiplexing; and therefore, the dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna can be applied to the wireless communication field.
Owner:XIDIAN UNIV
Deployable reflectarray antenna
InactiveUS20120235874A1Avoid bendingPrevent twistingCollapsable antennas meansElectrical and Electronics engineeringReflective array antenna
Owner:ELECTRONICS & TELECOMM RES INST
Holographic reflective array compact range
ActiveCN106249058AImprove energy efficiencyMeet the requirements of far-field conditionsWave based measurement systemsAntenna radiation diagramsManufacturing cost reductionCompact range
The invention relates to a holographic reflective array compact range. The holographic reflective array compact range is composed of a feed source, a reflective array antenna and edge teeth, wherein the feed source is fed forward and is vertically irradiated on the reflective array antenna, the reflective array antenna corrects spherical waves emitted by the feed source into plane waves at a close distance, and through caliber layout and inhibition of edge diffraction via the edge teeth, a specific plane wave dead zone is generated so that the far-field condition demand of an antenna pattern or a target RCS test is satisfied. According to the invention, the processing precision of the reflective array antenna is lower than a conventional reflection plane by one order of magnitude, a printing structure is employed, the structure is portable, the manufacturing is simple, the installation is convenient, the manufacturing cost can be decreased, and the holographic reflective array compact range is suitable for low-cost construction of a radiation or scattering test system of a millimeter wave / submillimeter wave band.
Owner:BEIHANG UNIV
Microstrip reflective array unit loaded with cross slot on ground, and reflective array antenna
InactiveCN105261842AWide range of applicationsRich in featuresWaveguide hornsDielectric substrateHorn antenna
The invention provides a microstrip reflective array unit loaded with a cross slot on the ground. The microstrip reflective array unit comprises a patch, a low-dielectric constant dielectric substrate, a high-dielectric constant dielectric substrate, a floor loaded with a cross slot, a foam layer and a floor, wherein the floor loaded with the cross slot is a metal flat plate opened with the cross slot at the middle, the foam layer is a honeycomb flat plate made of foam material or paper, and all adjacent layers are in close contact. Further, the invention also provides a microstrip reflective antenna. The antenna comprises a feeding source and a microstrip reflective array, wherein the feeding source is a pyramidal horn antenna, the microstrip reflective array comprises a plurality of microstrip reflective array units loaded with the cross slots on the ground, which are transversely, longitudinally and uniformly arranged. The unit loaded with the cross slot, provided by the invention, can work in two polarization directions perpendicular to each other, and different polarizations are completely independent to one another. The reflective array antenna has the performance of line-polarized wave conversion.
Owner:NAT SPACE SCI CENT CAS
Multi-band antenna system
The present invention is an improved antenna system. In an embodiment of the invention, the antenna system of the present invention may be a high-gain, low-profile wide-band antenna. Advantageously, the antenna system of the present invention may include a plate with reflecting elements to form a reflectarray antenna suitable for mounting on an aircraft. The reflectarray antenna of the present invention may be formed from a planar array of waveguides which may operate as a low loss, wide-band reflecting elements. Individual waveguides may be designed to scatter an incident field while impressing appropriate phase shifts in order to form a plane wavefront at the array aperture to produce a desired output signal. Waveguides may include ridges to employ vertical and horizontal polarization across a wide bandwidth operable at a high frequency, such as 10 GHz to 30 GHz.
Owner:ROCKWELL COLLINS INC
Single-layer double-frequency circularly-polarized reflective array antenna employing graphene units
InactiveCN107645062AImprove directionalityOvercoming performance degradationWaveguide hornsOptoelectronicsMono layer
The invention belongs to the technical field of antennae, and discloses a single-layer double-frequency circularly-polarized reflective array antenna employing graphene units. The single-layer double-frequency circularly-polarized reflective array antenna comprises a circularly-polarized feed source and a reflective array, the circularly-polarized feed source is formed by a circularly-polarized horn antenna, the upper surface of the reflective array is formed by alternatively arranging high-frequency graphene units and low-frequency graphene units, and the lower surface of the reflective arrayis provided with a frequency selection surface. The reflective array is of a single-layer structure, graphene is introduced as a radiating body of the reflective array units, and compared with a conventional metal reflective array antenna, the single-layer double-frequency circularly-polarized reflective array antenna is advantaged in that the performance of the reflective array antenna in the terahertz frequency range is effectively improved; a rotary unit method is employed to carry out phase compensation, the lower surface of the reflective array is provided with the frequency selection surface, and mutual coupling between units of the reflective array in two different frequency ranges is effectively reduced.
Owner:XIDIAN UNIV +1
Planar dual-reflection array antenna
ActiveCN105428801AAvoid problems with high profileAchieve regulationRadiating elements structural formsPolarised antenna unit combinationsElectromagnetic wave equationSignal reflection
The invention discloses a planar dual-reflection array antenna. The planar dual-reflection array antenna comprises a polarization selection layer, a main reflection surface, a microstrip patch unit positioned on the main reflection surface and a feed source on the same side with the main reflection surface, wherein the polarization selection layer is used for reflecting an electromagnetic wave signal emitted by the feed source to the main reflection surface; and the microstrip patch unit is used for performing phase compensation on the electromagnetic wave signal reached the main reflection surface and changing the polarization direction of the electromagnetic wave signal to enable the electromagnetic wave signal to transmit to the polarization selection layer to form a synthesized wave beam with an assigned setting direction. Therefore, the section profile height of the planar dual-reflection array antenna is half of that of the conventional reflection array antenna, so that the problem of relatively high section of the antenna is effectively avoided; and meanwhile, the polarization direction of the electromagnetic wave signal is adjusted by the microstrip patch unit of the planar dual-reflection array antenna, so that the performance of the planar dual-reflection array antenna is effectively improved.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
Single-layer triple-frequency micro-strip reflection array antenna
ActiveCN105261838ASimple structureGood multi-frequency radiation performanceWaveguide hornsSimultaneous aerial operationsDielectric substrateTriple frequency
The invention provides a single-layer triple-frequency micro-strip reflection array antenna comprising a feed source and a micro-strip reflection array. The micro-strip reflection array comprises a plurality of cross vibrator units which are evenly arranged on the upper surface of a dielectric substrate, and multi-resonant units of which each is formed by combining a circular ring and a circle coaxially. The cross vibrator units respectively work in an X band and in a Ku band through two intersecting directions. The multi-resonant units work in a Ka band. As the cross vibrator units and the multi-resonant units are arranged and the mutual coupling effect between the bands is taken into full account, the single-layer triple-frequency micro-strip reflection array antenna of the invention can simultaneously work in the X, Ku and Ka bands. The single-layer structure makes the aperture of the reflection array antenna fully reused. The micro-strip reflection array antenna of the invention has good multi-frequency radiation performance, has a relatively simple structure, is easy to implement in engineering, and has high value of engineering application.
Owner:NAT SPACE SCI CENT CAS
X/Ku-frequency-band double-frequency dual-polarization microstrip-flat-reflective-array antenna
ActiveCN105356066AGood dual-frequency radiation characteristicsSimple structureWaveguide hornsRadiating elements structural formsDual frequencyDielectric substrate
Provided in the invention is an X / Ku-frequency-band double-frequency dual-polarization microstrip-flat-reflective-array antenna comprising a feed source and a microstrip flat reflective array. The feed source is a pyramidal horn antenna. The microstrip flat reflective array contains a plurality of dual-parallel oscillator units; each dual-parallel oscillator units includes two parallel oscillator pasters with different lengths and identical width: a long oscillator paster and a short oscillator paster; and the units are arranged on a dielectric substrate horizontally and longitudinally in a uniform intersected mode. According to the invention, the provided antenna has the good dual-frequency radiation characteristic and has advantages of simple structure, light weight, and low cost.
Owner:NAT SPACE SCI CENT CAS
Deployable reflectarray antenna structure
ActiveUS10263316B2Easy transitionHelp positioningCollapsable antennas meansAntenna supports/mountingsStructural engineeringElectronic component
Owner:M M A DESIGN
Micro-strip reflective array antenna
InactiveCN108281801ASimple structureLow costRadiating elements structural formsAntenna earthingsEngineeringCross polarization
The invention discloses a micro-strip reflective array antenna, and mainly solves problems in the prior art that the structure is complicated and the bandwidth is narrower. The micro-strip reflectivearray antenna is formed by periodically arranging a plurality of horizontally and longitudinally uniformly arranged paster units. A reflecting phase of each paster unit is different, and an arrangement period D is 0.3-0.5 Lambda. Each unit successively comprises a paster (1), a medium substrate (2) and a floor (3) from top to bottom. The paster (1) uses a circular structure. The circular paster isprovided with two pairs of gaps (11). The two pairs of the gaps (11) are positioned at two ends of two mutual perpendicular diameter lines of the circle. The micro-strip reflective array antenna is capable of improving the gain bandwidth, simple in structure, smaller in cross-polarization, and good in unit frequency characteristic curve parallelism, and can be used for the electromagnetic wave regulation and control of a microwave band.
Owner:XIDIAN UNIV
Microstrip reflective array antenna adopting a plurality of U-slot patches
InactiveUS7161539B2Drawback can be obviatedIncrease the frequency bandSimultaneous aerial operationsRadiating elements structural formsHorn antennaMicrowave signals
Owner:TATUNG UNIVERSITY +1
Micro-strip reflective array antenna with honeycomb-like unit arrangement
InactiveCN105261840AClosely arrangedImprove space utilizationWaveguide hornsBeam directionDielectric substrate
The invention provides a micro-strip reflective array antenna with a honeycomb-like unit arrangement, and the antenna works in a Ku waveband. The antenna comprises a feed source and a micro-strip reflective array; the antenna is characterized in that the feed source is a pyramid horn antenna and the feeding mode is positive feed; the micro-strip reflective array is hexagonal, including multi-resonant structural units nested by coaxial hexagonal rings of different sizes in a rotating manner; the multi-resonant structural units are attached to a dielectric substrate in a honeycomb-like arrangement; a foaming layer is arranged between the dielectric substrate and a floor; the beam direction of the whole reflective array is a direction perpendicular to the array plane. The unit arrangement mode of the micro-strip reflective array antenna is different from the conventional transversal and longitudinal arrangement mode; instead, the units of the micro-strip reflective array antenna are in the honeycomb-like arrangement; due to the arrangement mode, the space utilization of the reflective array surface is improved to enable the unit arrangement to be more tightened; and in addition, the micro-strip reflective array antenna is attractive in appearance, wider in bandwidth and good in the radiation performance.
Owner:NAT SPACE SCI CENT CAS
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