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37results about How to "Stable radiation characteristics" patented technology
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Multi-frequency-band array antenna compact in structure
ActiveCN103545621AReduce electrical interferenceAchieve coveragePolarised antenna unit combinationsAntenna couplingsLow frequency bandWide band
The invention relates to a multi-frequency-band array antenna compact in structure. The multi-frequency-band array antenna comprises a metal reflective board, a low-frequency radiation unit working in low frequency bands and a high-frequency radiation unit working in high frequency bands, and the low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board. The low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board in a nested mode, and the orthographic projection of the low-frequency radiation unit and the orthographic projection of the high-frequency radiation unit do not coincide. The low-frequency radiation unit is formed by connecting a horizontal vibrator and a vertical vibrator with a power divider feed network and is flexible in structure, and a distance and other parameters can be flexibly configured according to practical application requirements. Due to the adoption of the structure, circuit network losses are few, the radiation characteristic stability of the multi-frequency-band array antenna within an ultra wide band range can be maintained, 2G, 3G and 4G LTE systems in mobile communication are compatible, the number of antennas used in a base station can be reduced, station distribution cost can be lowered, and operation and maintenance cost can also be lowered.
Owner:GUANGDONG BROADRADIO COMM TECH
Broadband dual-polarization base station filter antenna element and array without external filter circuit
PendingCN109004340AGood radiation characteristicsStable radiation characteristicsAntenna supports/mountingsRadiating elements structural formsOut of band rejectionBroadband
The invention discloses a broadband dual-polarization base station filter antenna unit without an external filter circuit and an array thereof. The antenna unit is arranged in the middle of the reflector. The antenna comprises an oscillator arm, a balun and two parasitic metal rings. The vibrator arm is provided with a microstrip line branch, is connected through the balun, and is fed through thebalun, and the balun is provided with a feeder line. The upper part and the lower part of the vibrator arm are respectively provided with parasitic metal rings. The antenna unit has the characteristics of compact and simple structure. The invention realizes good out-of-band rejection effect and has good frequency selectivity without cascading filter, thus avoiding filter insertion loss. The invention realizes high polarization isolation, and realizes stable pattern in wide frequency band at the same time.
Owner:SOUTH CHINA UNIV OF TECH
Multi-band array antenna compact in structure
ActiveCN103560338AReduce electrical interferenceAchieve coverageSeparate antenna unit combinationsMulti bandLow frequency band
The invention relates to a multi-band array antenna compact in structure. The multi-band array antenna compact in structure comprises a metal reflecting board, a low frequency radiation unit working in a low frequency band and a high frequency radiation unit working in a high frequency band. The low frequency radiation unit and the high frequency radiation unit are arranged on the metal reflecting board in a nested mode, and the orthographic projections of the low frequency radiation unit and the high frequency radiation unit are not overlapped. The low frequency radiation unit is formed by connecting a horizontal oscillator, a vertical oscillator and a feed network. A low frequency oscillator is flexible in structure, and parameters such as separation distances can be flexibly configured according to practical application requirements. By the adoption of the structure, the stability of radiation characteristics of multi-band frequency array antennas in an ultra wide band range can be kept, the multi-band array antenna compact in structure is compatible with all 2G, 3G and 4G LTE standards in mobile communication, the number of antennas used by a base station is reduced, station distribution cost is reduced, and operation maintenance cost can also be reduced.
Owner:GUANGDONG BROADRADIO COMM TECH
Broadband high-gain Vivaldi antenna
InactiveCN109301451AStable radiation characteristicsIncrease Radiation GainRadiating elements structural formsAntennas earthing switches associationResonant cavityDielectric substrate
The invention discloses broadband high-gain Vivaldi antenna which a dielectric substrate, a metal patch, a quadrangular metal patch, an impedance match microstrip line and a sector-shaped metal branch. The metal patch and the quadrangular metal patch are fixed in the top side of the dielectric substrate, the impedance match microstrip line and the sector-shaped metal branch are fixed in the bottomside of the dielectric substrate, the metal patch is provided with gradual-change trough line symmetric by taking the horizontal central axis as the center and provided with a horn-shaped opening, the gradual-change trough line is of index type gradual change, the bottom end of the gradual-change trough line is provided with a circular resonant cavity, the outer sidewalls of the gradual-change trough line are provided with comb shaped grids at equal interval, the quadrangular metal patch is positioned in the opening of gradual-change trough line, one end of the L-shaped impedance match microstrip line is connected to the sector-shaped metal branch, and the impedance match microstrip line and the sector-shaped metal branch serve as a feed structure. The Vivaldi antenna of the frequency range of 2.3-8.0GH is characterized by simple structure, wide frequency band and high gain.
Owner:NANJING UNIV OF SCI & TECH
Antenna system having gain auto-correction function
ActiveCN106486734AImprove stabilityAddressing Gain FluctuationsAntenna supports/mountingsThermal expansionOptoelectronics
Aiming at the problem that an existing antenna system with a dielectric lens does not consider a thermal expansion effect of the dielectric lens in a wide temperature range, the invention provides an antenna system having a gain auto-correction function. The antenna system comprises a substrate aluminum plate, a base, radiation antennas, a dielectric lens plate and a lifting device, wherein the base is arranged at the bottom of the substrate aluminum plate, the radiation antennas are arranged at the top of the substrate aluminum plate, the dielectric lens plate is arranged on the radiation antennas, the dielectric lens plate and the substrate aluminum plate are movably connected by the lifting device, and the relative distance between the dielectric lens plate and the radiation antennas is adjusted by the lifting device. The antenna system has the technical effects that a temperature change coefficient of the dielectric lens is adjusted by self-adaptive height adjustment, and the problems of gain fluctuation and beam change of the antenna system in the wide temperature range are effectively solved.
Owner:HEFEI UNIV OF TECH
Multi-band array antenna
ActiveCN103560335AReduce electrical interferenceAchieve coverageRadiating elements structural formsPolarised antenna unit combinationsMulti bandLow frequency band
The invention relates to a multi-band array antenna. The multi-band array antenna comprises a metal reflecting plate, low-frequency radiating elements and high-frequency radiating elements, wherein the low-frequency radiating elements and the high-frequency radiating elements are all installed on the metal reflecting plate, the low-frequency radiating elements operate at a low frequency band, and the high-frequency radiating elements operate at a high frequency band; the low-frequency radiating elements and the high-frequency radiating elements are arranged on the metal reflecting plate in a nested mode, and the orthographic projection of the low-frequency radiating elements does not coincide with that of the high-frequency radiating elements. Each low-frequency radiating element is composed of a horizontal oscillator and a pair of vertical oscillators connected with a power divider feed network. The low-frequency radiating elements are flexible in structure, and the distance and other parameters can be flexibly configured according to actual use requirements. By the adoption of the structure of the multi-band array antenna, circuits and networks are low in loss so that the radiation characteristic of the multi-band array antenna can be kept stable within the range of an ultra-wide band; besides, the multi-band array antenna is compatible with various service patterns including 2G, 3G and 4G LTE, as a result, the number of antennae used in a base station can be decreased, station distribution cost is reduced, and operation and maintenance cost also can be reduced.
Owner:GUANGDONG BROADRADIO COMM TECH
Air filler metal planar array antenna
ActiveCN110444904AHigh gainHas broadband radiation characteristicsParticular array feeding systemsRadiating elements structural formsEngineeringWaveguide
The invention provides an air filler metal planar array antenna and belongs to the technical field of array antennas. The air filler metal planar array antenna comprises an air power dividing network,wherein two transmission segments connected to each other in the air power dividing network form a T-shaped connection structure; electromagnetic energy is equally distributed in each T-shaped connection structure; the two ends of the last transmission segment are provided with first air vertical waveguides; the upper surface of each first air vertical waveguide is connected to an air cavity; four second air vertical waveguides are arranged centrally symmetrically on the air cavity; four radiating element individuals are centrally symmetrically distributed on the two sides of the long side ofthe two air vertical waveguides. The air filler metal planar array antenna is compact in structure, high in integration degree, small in space volume and easy to machine and realizes radiating elements with wideband radiation characteristics. The radiating elements and a feed network can be well matched, and the electromagnetic energy can be efficiently transmitted and effectively allocated in amultilayer metal cavity so as to ensure that the antenna has a wide frequency band, high gain and stable radiation characteristics.
Owner:BEIJING JIAOTONG UNIV
Low-profile filtering antenna with broadband external suppression
ActiveCN113381192AImprove frequency selectivityHigh selectivityRadiating elements structural formsAntenna earthingsDielectric substrateMaterials science
The invention discloses a low-profile filtering antenna with broadband external suppression and aims to solve the technical problem that a patch filtering antenna does not have good out-of-band suppression. The antenna comprises two dielectric substrates which are sequentially stacked from top to bottom; a rectangular metal radiation patch with a rectangular double-slit structure is printed and etched on the upper surface of the first dielectric substrate to form zero radiation at a high-frequency position; the upper surface and the lower surface of the second dielectric substrate are printed with a metal floor and a cross-shaped metal microstrip feeder respectively, a transparent rectangular gap and a U-shaped gap are etched in the metal floor, and the U-shaped gap is located in the center of the metal floor to form radiation zero at a low frequency; an air layer exists between the first dielectric substrate and the second dielectric substrate. Filter structures are arranged on the upper dielectric substrate and the lower dielectric substrate respectively, radiation zero points at the high frequency and the low frequency are generated respectively; a cross-shaped feeder line is additionally arranged; the out-of-band rejection range is increased; the passband selectivity is improved; and the out-of-band gain level is reduced. The antenna can be applied to a wireless communication system.
Owner:XIDIAN UNIV
Broadband high gain Vivaldi antenna for loading grooved dielectric-slabs
InactiveCN106450731ASmall sizeSimple structureRadiating elements structural formsResonant antennasRadarVivaldi antenna
The invention relates to a broadband high gain Vivaldi antenna for loading grooved dielectric-slabs, and belongs to the technical field of wireless communication. The broadband high gain Vivaldi antenna for loading the grooved dielectric-slabs comprise the upper-layer dielectric-slab, the middle-layer dielectric-slab and the lower-layer dielectric-slab, an exponential tapered line antipodal structure Vivaldi antenna of substrate integrated waveguide (SIW) feed is printed on the middle layer dielectric-slab, the upper-layer dielectric-slab and lower-layer dielectric-slab are symmetrically loaded on both sides of the middle-layer dielectric-slab, the thickness of the upper-layer dielectric-slab and the thickness of the lower-layer dielectric-slab are linearly-gradient, and the upper-layer dielectric-slab and the lower layer dielectric-slab are provided with periodically-gradient rectangular grooves. The broadband high gain Vivaldi antenna for loading the grooved dielectric-slabs have the advantages of being simple in structure, compact in size, low in cost, wide in band width, high in gain, stable in radiation characteristic and the like, and is applicable to the fields of spacecrafts, radars and the like.
Owner:YUNNAN UNIV
Low RCS array antenna with reconfigurable scattered beams
ActiveCN110931969AStable radiation characteristicsOvercoming low gainRadiating elements structural formsIndividually energised antenna arraysComputational physicsDielectric substrate
The invention provides a low RCS array antenna with reconfigurable scattered beams. The low RCS array antenna comprises a dielectric substrate, N slotted metal floors printed on the lower surface of the dielectric substrate, N feed structures, N radiation patches printed on the upper surface of the dielectric substrate and N annular radiators, wherein the feed structure is composed of a metal column and a rectangular metal sheet; the annular radiator is composed of a rectangular metal ring, a metal patch, a PIN tube, a capacitor and an inductor; the PIN tube, the capacitor and the inductor areembedded in the rectangular metal ring; the rectangular metal ring is provided with M * N openings, and M is greater than or equal to 1, and the end parts of the openings are respectively connected with the PIN tube and the capacitor; and the metal patch is located on the outer side of the rectangular metal ring and connected with the rectangular metal ring through the inductor. The low RCS arrayanteena adjusts scattered wave beams through the rectangular radiation ring, guarantees that a high-gain effect is obtained under the condition that the radiation characteristic of the antenna array,and obviously reduces the radar scattering cross section of the antenna under the conditions of vertical incidence and oblique incidence.
Owner:XIDIAN UNIV
Ultra-wideband Vivaldi antenna
InactiveCN107634331AHighly integratedLow costRadiating elements structural formsAntennas earthing switches associationUltra-widebandDielectric plate
The present invention discloses an ultra-wideband Vivaldi antenna. The antenna comprises an upper PCB dielectric plate, a lower PCB dielectric plate and U-shaped metal slots, wherein the upper PCB dielectric plate and the lower PCB dielectric plate are arranged in parallel and face each other, and the U-shaped metal slots are located at two sides of the upper PCB dielectric plate and the lower PCBdielectric plate; the upper PCB dielectric plate and the lower PCB dielectric plate are fixed through the U-shaped metal slots at the two sides; the outer surface of the upper PCB dielectric plate isprinted with an exponential type slit metal layer; semi-elliptical open slots are symmetrically formed at two side wings of the exponential type slit metal layer; rectangular slots are formed in theexponential type slit metal layer; the rectangular slots are symmetrically distributed near the inner edge of the exponential type slit metal layer; and the outer surface of the lower PCB dielectric plate is printed with the same exponential type slit metal layer corresponding to the outer surface of the upper PCB dielectric plate. According to the ultra-wideband Vivaldi antenna of the invention,a strip line is adopted to perform feeding; the strip line is in transition connection with a microstrip line at the edge of the antenna, so that the antenna can be conveniently connected with a radiofrequency connector through the microstrip line; and an even number of metal through hole pairs are distributed along two sides of the strip line, and therefore, the performance of a transmission line can be improved.
Owner:NANJING UNIV OF SCI & TECH
Four-frequency notch ultra-wideband antenna based on dual-band resonant EBG structure
InactiveCN109193164ASimple structureNo deterioration in radiation performanceSimultaneous aerial operationsRadiating elements structural formsDual frequencyUltra-wideband
The invention discloses a four-frequency notch ultra-wideband antenna based on a dual-frequency resonant EBG structure, belonging to the wireless communication field. The invention comprises a metal ground plate 12, a dielectric substrate 1, a circular radiation patch 2 of an antenna, a 50 ohm feeder 3, a dual-frequency resonant groove EBG unit A4, and a dual-frequency resonant groove EBG unit B10. and is characterized in that the circular radiation patch 2 and the 50 ohm feed line 3 of the antenna are located on the upper surface of the dielectric substrate 1, the metal ground plane 12 is located on the lower surface of the dielectric substrate 1, the dual-frequency resonant groove EBG unit A4 is loaded on the right side of the 50 ohm feed line 3, and the dual-frequency resonant groove EBG unit B10 is loaded on the left side of the 50 ohm feed line 3. The rectangular groove 11 is etched on the middle part of the surface of the metal ground plate 12 in contact with the dielectric substrate 1, and the width and the length of the rectangular groove 11 are 2.9 mm and 2.5 mm respectively. The circular radiation patch 2 of the antenna is circular in shape.
Owner:HARBIN ENG UNIV
Wide Bandwidth Beam Rectangular Monopole Antenna
InactiveCN104377428BSimple structureReduce volumeAntenna adaptation in movable bodiesRadiating elements structural formsRadiation lossElectrical conductor
The invention discloses a broadband wide-beam rectangular monopole antenna and relates to an onboard antenna with broadband wide-beam features. The monopole antenna comprises a rectangular pasting piece printed on a dielectric substrate, a coplanar waveguide and an edge gradual-change structure floor. Feeding is carried out in a coplanar waveguide mode. Radiation loss is lowered. The lower end of the rectangular conductor pasting piece is subjected to smoothing processing. Impedance matching is optimized. A groove is formed in the bottom of the pasting piece. The edge gradual-change structure floor is designed, and an antenna beam can be effectively widened. The antenna has the advantages of being small in size, simple in structure, convenient to machine, wide in beam, easy to integrate and the like, in a broadband, the width of the 1.5 dB beam of the antenna in a vertical face reaches 120 degrees, all-direction scanning is carried out in a horizontal plane, impedance bandwidth is 7.1 GHz-12.8 GHz, the maximum gain can reach 3.8 dB, the radiation features are stable, the requirement for the performance index of the onboard antenna is met, and the monopole antenna is suitable for being used as a conformal unit of the onboard antenna.
Owner:JINLIN MEDICAL COLLEGE
Dual-frequency dielectric patch antenna with frequency tunable function
ActiveCN113690607ARealize the function of tunable frequency ratioSensitive to length changesRadiating elements structural formsAntenna earthingsDielectric substrateEngineering
The invention relates to a dual-frequency dielectric patch antenna with a frequency tunable function, which comprises a lower dielectric substrate, a metal reflection floor, an upper dielectric substrate and a rectangular dielectric patch which are sequentially stacked from bottom to top. A frequency tuning structure is arranged between the rectangular dielectric patch and the upper dielectric substrate, the lower surface of the lower dielectric substrate is provided with a microstrip feed line for coupling differential feed, and the metal reflection floor is provided with a coupling gap corresponding to the microstrip feed line. The invention provides a frequency-reconfigurable dual-frequency dielectric patch antenna working in a dominant mode TM10 and a high-order mode anti-phase TM20 for the first time. Because the sensitivities of the two modes to the length change of the dielectric patch are different, the electrical length of the dielectric patch is changed by embedding a pair of microstrip line parts loaded with variable capacitance diodes into the two sides of the rectangular dielectric patch resonator in a targeted manner, so that under the condition that the frequency and radiation performance of a main mode TM10 are not influenced, the frequency of the high-order mode inverted TM20 is independently tuned.
Owner:NANTONG UNIVERSITY
Q-wave band ultra-high-speed wireless local area network mobile terminal antenna
ActiveCN104347942ASimple structureReduce volumeRadiating elements structural formsAntenna earthingsDielectric substrateEngineering
The invention discloses a Q-wave band ultra-high-speed wireless local area network mobile terminal antenna, which comprises a dielectric substrate, a rectangular metal antenna radiation unit, a short circuit branch metal strip, a feeder branch metal strip and a metal grounding plane, wherein the short circuit branch metal strip and the feeder branch metal strip are connected with the antenna radiation unit, a first metal through hole is formed in the short circuit branch metal strip, a second metal through hole is formed in the feeder branch metal strip, the area of the metal grounding plane covers the area of the antenna radiation unit, the short circuit branch metal strip and the feeder branch metal strip, and a U-shaped gap is formed in the rectangular metal antenna radiation unit. Compared with the prior art, the Q-wave band ultra-high-speed wireless local area network mobile terminal antenna has the advantages that by aiming at the characteristics of the millimeter wave frequency band (45GHz), a printed circuit process is utilized for designing and realizing the Q-wave band mobile terminal antenna with simple structure and small size, the antenna has the characteristics of broadband, small standing wave, omnidirectional radiation, easy integration, higher precision and good repeatability, meanwhile, the cost is low, the batch production is convenient, and the like.
Owner:SOUTHEAST UNIV +1
Small ultra-wideband circularly polarized planar helical antenna
PendingCN112701487AStable radiation characteristicsImpedance Bandwidth GuaranteedLogperiodic antennasRadiating elements structural formsUltra-widebandEngineering
The invention discloses a small ultra-wideband circularly polarized planar helical antenna, which comprises a self-compensating composite helical structure serving as a radiating element of the antenna and a microstrip gradient balun structure for feeding, wherein the microstrip gradient balun structure is a double-sided structure, two unbalanced microstrip lines are gradually changed into balanced parallel double lines, and impedance conversion is realized in the gradual change process; and the unbalanced end of the microstrip gradient balun structure extends downwards to a reflector. The small ultra-wideband circularly polarized planar helical antenna provided by the invention maintains a stable radiation property, the impedance bandwidth of the antenna reaches 150% (2-18GHz), a standing-wave ratio is less than 2, the antenna maintains an excellent circular polarization property in the working bandwidth (2-18GHz), and an axial ratio is less than 3dB. On the basis of ensuring the radiation property, impedance bandwidth and axial ratio bandwidth of the antenna, the plane size and profile size of the antenna are reduced, and the property of miniaturization is achieved.
Owner:南京爱而赢科技有限公司
Broadband Butler matrix feed network with frequency-variable phase difference
ActiveCN113097721AStable radiation characteristicsEasy to processParticular array feeding systemsBeam directionBroadbanding
The invention discloses a broadband Butler matrix feed network with frequency-variable phase difference. According to the invention, the working range of the feed network is 2-4 GHz, and the feed network is provided with four input ports, four output ports, two three-section couplers, four broadband couplers, three cross networks, two phase compensators, two 45-degree phase shifters and six broadband phase shifters, wherein two of the input ports are connected with a matched load, and the other two of the input ports feed independently; when a frequency is changed from 2 GHz to 4 GHz, signals with equal amplitude and with a phase difference that changes from + / - 45 degrees to + / - 90 degrees can be output; and a change process is close to a linear change, and the working frequency range of the feed network exceeds one frequency multiplication. According to the invention, phase difference frequency change is achieved through power synthesis, the radiation characteristic that an antenna array beam direction is stable is achieved, and the whole feed network is simple and compact in structure, easy to machine, light in weight, low in machining cost, wide in working bandwidth and good in application prospects.
Owner:SOUTH CHINA UNIV OF TECH
An ultra-wideband multi-band array antenna
ActiveCN104269649BAchieve coverageCompact structureSimultaneous aerial operationsRadiating elements structural formsMulti bandUltra-wideband
The invention relates to an ultra-wide frequency band multi-band array antenna which comprises a metal reflection plate, a low-frequency radiation unit and a high-frequency radiation unit. The low-frequency radiation unit and the high-frequency radiation unit are mounted on the metal reflection plate, the low-frequency radiation unit works on a low-frequency band, and the high-frequency radiation unit works on a high-frequency band. The low-frequency radiation unit comprises two low-frequency oscillators which are both in + / -45-degree polarization and are mounted in a mutually orthogonal mode, the two low-frequency oscillators are connected with a feed network, and a + / -45-degree polarization far field radiation directional diagram is generated; the high-frequency radiation unit comprises two high-frequency oscillators which are both in + / -45-degree polarization and are mounted in a mutually orthogonal mode. The multi-band array antenna is capable of covering a 694-960 MHz ultra-wide frequency band and a 1710-2690 MHz ultra-wide frequency band and is simple in structure so as to be compatible with all frequency bands of a current mobile communication network.
Owner:GUANGDONG BROADRADIO COMM TECH
Compact multi-band array antenna
ActiveCN103545621BReduce electrical interferenceAchieve coveragePolarised antenna unit combinationsAntenna couplingsLow frequency bandWideband
The invention relates to a multi-frequency-band array antenna compact in structure. The multi-frequency-band array antenna comprises a metal reflective board, a low-frequency radiation unit working in low frequency bands and a high-frequency radiation unit working in high frequency bands, and the low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board. The low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board in a nested mode, and the orthographic projection of the low-frequency radiation unit and the orthographic projection of the high-frequency radiation unit do not coincide. The low-frequency radiation unit is formed by connecting a horizontal vibrator and a vertical vibrator with a power divider feed network and is flexible in structure, and a distance and other parameters can be flexibly configured according to practical application requirements. Due to the adoption of the structure, circuit network losses are few, the radiation characteristic stability of the multi-frequency-band array antenna within an ultra wide band range can be maintained, 2G, 3G and 4G LTE systems in mobile communication are compatible, the number of antennas used in a base station can be reduced, station distribution cost can be lowered, and operation and maintenance cost can also be lowered.
Owner:GUANGDONG BROADRADIO COMM TECH
An air-filled metal planar array antenna
ActiveCN110444904BHigh gainHas broadband radiation characteristicsParticular array feeding systemsRadiating elements structural formsEngineeringWide band
The invention provides an air filler metal planar array antenna and belongs to the technical field of array antennas. The air filler metal planar array antenna comprises an air power dividing network,wherein two transmission segments connected to each other in the air power dividing network form a T-shaped connection structure; electromagnetic energy is equally distributed in each T-shaped connection structure; the two ends of the last transmission segment are provided with first air vertical waveguides; the upper surface of each first air vertical waveguide is connected to an air cavity; four second air vertical waveguides are arranged centrally symmetrically on the air cavity; four radiating element individuals are centrally symmetrically distributed on the two sides of the long side ofthe two air vertical waveguides. The air filler metal planar array antenna is compact in structure, high in integration degree, small in space volume and easy to machine and realizes radiating elements with wideband radiation characteristics. The radiating elements and a feed network can be well matched, and the electromagnetic energy can be efficiently transmitted and effectively allocated in amultilayer metal cavity so as to ensure that the antenna has a wide frequency band, high gain and stable radiation characteristics.
Owner:BEIJING JIAOTONG UNIV
A q-band ultra-high-speed wireless local area network mobile terminal antenna
ActiveCN104347942BImprove working bandwidthStable radiation characteristicsRadiating elements structural formsAntenna earthingsDielectric substrateEngineering
The invention discloses a Q-wave band ultra-high-speed wireless local area network mobile terminal antenna, which comprises a dielectric substrate, a rectangular metal antenna radiation unit, a short circuit branch metal strip, a feeder branch metal strip and a metal grounding plane, wherein the short circuit branch metal strip and the feeder branch metal strip are connected with the antenna radiation unit, a first metal through hole is formed in the short circuit branch metal strip, a second metal through hole is formed in the feeder branch metal strip, the area of the metal grounding plane covers the area of the antenna radiation unit, the short circuit branch metal strip and the feeder branch metal strip, and a U-shaped gap is formed in the rectangular metal antenna radiation unit. Compared with the prior art, the Q-wave band ultra-high-speed wireless local area network mobile terminal antenna has the advantages that by aiming at the characteristics of the millimeter wave frequency band (45GHz), a printed circuit process is utilized for designing and realizing the Q-wave band mobile terminal antenna with simple structure and small size, the antenna has the characteristics of broadband, small standing wave, omnidirectional radiation, easy integration, higher precision and good repeatability, meanwhile, the cost is low, the batch production is convenient, and the like.
Owner:SOUTHEAST UNIV +1
A Dual-Band L-shaped Folded Antenna
ActiveCN105609948BSmall sizeStable radiation characteristicsSimultaneous aerial operationsRadiating elements structural formsWide bandLine segment
The invention provides a double-band L-shaped inflected antenna. The size of the antenna is only 110mm*40mm*25mm, but the antenna can cover the bands of LTE800, CDMA800 (band 5 / 6 / 18) 0.824-0.91GHz, LTE2300, WLAN 2.45GHz and 2.23-2.50GHz; the antenna has the characteristics of small size and stable radiation; in addition, the antenna is simple in structure and low in cost, realizes wide bands only using simple copper metal antenna sections, and thus has a broad market prospect.
Owner:杭州平治信息技术股份有限公司
A compact multi-band array antenna
ActiveCN103560338BReduce electrical interferenceAchieve coverageSeparate antenna unit combinationsMulti bandLow frequency band
The invention relates to a multi-band array antenna compact in structure. The multi-band array antenna compact in structure comprises a metal reflecting board, a low frequency radiation unit working in a low frequency band and a high frequency radiation unit working in a high frequency band. The low frequency radiation unit and the high frequency radiation unit are arranged on the metal reflecting board in a nested mode, and the orthographic projections of the low frequency radiation unit and the high frequency radiation unit are not overlapped. The low frequency radiation unit is formed by connecting a horizontal oscillator, a vertical oscillator and a feed network. A low frequency oscillator is flexible in structure, and parameters such as separation distances can be flexibly configured according to practical application requirements. By the adoption of the structure, the stability of radiation characteristics of multi-band frequency array antennas in an ultra wide band range can be kept, the multi-band array antenna compact in structure is compatible with all 2G, 3G and 4G LTE standards in mobile communication, the number of antennas used by a base station is reduced, station distribution cost is reduced, and operation maintenance cost can also be reduced.
Owner:GUANGDONG BROADRADIO COMM TECH
Multi-Band Array Antenna
ActiveCN103560335BReduce electrical interferenceAchieve coverageRadiating elements structural formsPolarised antenna unit combinationsMulti bandLow frequency band
The invention relates to a multi-band array antenna. The multi-band array antenna comprises a metal reflecting plate, low-frequency radiating elements and high-frequency radiating elements, wherein the low-frequency radiating elements and the high-frequency radiating elements are all installed on the metal reflecting plate, the low-frequency radiating elements operate at a low frequency band, and the high-frequency radiating elements operate at a high frequency band; the low-frequency radiating elements and the high-frequency radiating elements are arranged on the metal reflecting plate in a nested mode, and the orthographic projection of the low-frequency radiating elements does not coincide with that of the high-frequency radiating elements. Each low-frequency radiating element is composed of a horizontal oscillator and a pair of vertical oscillators connected with a power divider feed network. The low-frequency radiating elements are flexible in structure, and the distance and other parameters can be flexibly configured according to actual use requirements. By the adoption of the structure of the multi-band array antenna, circuits and networks are low in loss so that the radiation characteristic of the multi-band array antenna can be kept stable within the range of an ultra-wide band; besides, the multi-band array antenna is compatible with various service patterns including 2G, 3G and 4G LTE, as a result, the number of antennae used in a base station can be decreased, station distribution cost is reduced, and operation and maintenance cost also can be reduced.
Owner:GUANGDONG BROADRADIO COMM TECH
Multi-band, multi-polarized wireless communication antenna
ActiveUS10033110B2Simple structureStable radiation characteristicsSimultaneous aerial operationsAntenna supports/mountingsMulti bandRadiating element
The present invention relates to a multi-band, multi-polarized wireless communication antenna, which comprises: a reflector; at least one first radiation module of a first band which is installed on the reflector; and at least one second or third radiation module of a second band or a third band installed on the reflector, wherein the first radiation module comprises first to fourth radiating elements having a dipole structure, the first to fourth radiating elements are configured such that every two radiating arms thereof are connected in the shape of letter “¬”, one of the two radiating arms is configured to be placed side by side along side of the reflector, and the second or third radiation module is installed to be included within an installation range of the first radiation module.
Owner:KMW INC
A Broadband Butler Matrix Feed Network with Phase Difference and Frequency Variation
ActiveCN113097721BStable radiation characteristicsEasy to processParticular array feeding systemsPhase differenceBeam direction
The invention discloses a broadband Butler matrix feeder network with phase difference and frequency change. The feeder network has a working range of 2GHz-4GHz, and is provided with four input ports, four output ports, and two three-stage couplers. , four broadband couplers, three crossover networks, two phase compensators, two 45° phase shifters, and six broadband phase shifters, two of which are connected to matched loads at the input ports, and the other two input ports are independently fed Electricity, when the frequency changes from 2GHz to 4GHz, it can output signals with equal amplitude and phase difference from ±45° to ±90°, the change process is close to linear change, and the operating frequency range of the feed network exceeds one frequency multiplier; the present invention Using power combination to achieve phase difference frequency change, and realize the radiation characteristics of antenna array beam direction stability, the whole feed network structure is simple and compact, simple processing, light weight, low processing cost, wide working bandwidth, has a good application prospect .
Owner:SOUTH CHINA UNIV OF TECH
A Low-rcs Array Antenna with Reconfigurable Scattered Beams
ActiveCN110931969BChange the state of reflected electromagnetic wavesScattering Cross Section ReductionRadiating elements structural formsIndividually energised antenna arraysCapacitanceScattering cross-section
Owner:XIDIAN UNIV
A multi-band array antenna
ActiveCN103560337BReduce electrical interferenceAchieve coverageSeparate antenna unit combinationsMulti bandLow frequency band
Owner:GUANGDONG BROADRADIO COMM TECH
A low profile filter antenna with wideband out-of-band rejection
ActiveCN113381192BImprove frequency selectivityHigh selectivityRadiating elements structural formsAntenna earthingsDielectric substrateEngineering
The invention discloses a low-profile filter antenna with wide band out-of-band suppression, which solves the technical problem that the patch filter antenna does not have good out-of-band suppression. A rectangular metal radiation patch with a rectangular double-slit structure is etched to form zero radiation at high frequencies; the upper and lower surfaces of the second dielectric substrate are respectively printed with a metal floor and a cross-shaped metal microstrip feeder, and a transparent metal floor is etched on the metal floor. A rectangular slot and a U-shaped slot, the U-shaped slot is at the center of the metal floor, forming a zero radiation at low frequencies; an air layer exists between the first and second dielectric substrates. In the present invention, the filter structures are separately arranged on the upper and lower dielectric substrates to generate radiation zero points at high frequency and low frequency respectively, and a cross-type feeder is added to increase the out-of-band suppression range, improve the pass-band selectivity, and reduce the out-of-band gain. level, can be used in wireless communication systems.
Owner:XIDIAN UNIV
Antenna System with Gain Self-Correcting Function
ActiveCN106486734BStable radiation characteristicsAntenna supports/mountingsOptoelectronicsThermal expansion
Aiming at the problem that an existing antenna system with a dielectric lens does not consider a thermal expansion effect of the dielectric lens in a wide temperature range, the invention provides an antenna system having a gain auto-correction function. The antenna system comprises a substrate aluminum plate, a base, radiation antennas, a dielectric lens plate and a lifting device, wherein the base is arranged at the bottom of the substrate aluminum plate, the radiation antennas are arranged at the top of the substrate aluminum plate, the dielectric lens plate is arranged on the radiation antennas, the dielectric lens plate and the substrate aluminum plate are movably connected by the lifting device, and the relative distance between the dielectric lens plate and the radiation antennas is adjusted by the lifting device. The antenna system has the technical effects that a temperature change coefficient of the dielectric lens is adjusted by self-adaptive height adjustment, and the problems of gain fluctuation and beam change of the antenna system in the wide temperature range are effectively solved.
Owner:HEFEI UNIV OF TECH
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