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30results about How to "Increase the effective radiation area" patented technology
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High-gain low-profile null feed array antenna
A high-gain low-profile null feed array antenna comprises a metal cover plate, a metal side plate, a metal bottom plate and a feed source. The metal cover plate locates at the upper part, the metal bottom plate locates at the lower part and the metal side plate locates at the middle part; the metal cover plate, the metal bottom plate and the metal side plate are connected with each other to form a cavity in which the feed source is arranged; the metal cover plate is a metal flat plate which is provided with a group of gap units arranged periodically; the feed source comprises a feeding patch located in the middle of the housing and a group of passive parasitized patches around; the feeding patch and the parasitized patch are printed on the upper surface of a same dielectric substrate; the lower surface of the dielectric substrate is attached on the upper surface of the metal bottom plate; and the feeding patch is activated by a cable through a radio frequency coaxial joint. The antenna has the advantages of simple feeding, high gain of more than 20dBi, high caliber efficiency of more than 60 percent and low cost.
Owner:SOUTHEAST UNIV
Small-sized planar high-gain inverted-F antenna
InactiveCN104882666AGuaranteed miniaturizationHigh gainRadiating elements structural formsAntenna impedanceMiniaturization
The invention discloses a small-sized planar high-gain inverted-F antenna comprising a primary radiant section, a second signal transmission section, and a secondary radiant section. The primary radiant section is disposed on a primary matching line which is a wire reaching a grounding point from a signal feed-in point via a signal input section, an antenna impedance match section, a first signal transmission section, and a signal conversion section. The primary radiant section is a first radiation portion extended from signal transmission section. The second signal transmission section is a transmission section extended from the primary radiant section opposite to the direction of the signal transmission section. The secondary radiant section is a second radiation portion extended from the second signal transmission section. The improved inverted-F antenna is increased in gain, provided with miniaturized and low overall dimension characteristics, and decreased in cost, and keeps the overall product appearance.
Owner:SHENZHEN GONGJIN ELECTRONICS CO LTD
Flat double P type radiant tube
ActiveCN103697476AIncrease the effective radiation areaLarge radiation heat transferGaseous fuel burnerThermodynamicsStraight tube
The invention discloses a flat double P type radiant tube which comprises a first straight tube, a three-way tube, a second straight tube, a third straight tube, a first bent tube and a second bent tube. A burner is fixed into a first straight tube mounting pipe, a central spray tube is a gas jet, four spray tubes on the outer side are air jets, the sections of all the spray tubes are elliptic, the proportion of a long edge and a short long edge of an ellipse is as same as that of a long edge and a short long edge of the section of a radiant tube body, and the first straight tube and the three-way tube are thickened. The flat double P type radiant tube has the advantages that the thickened first straight tube can effectively prevent tube wall failure caused by high-temperature corrosion, the thickened three-way tube can prevent bent tube deformation caused by heat stress, and the section of the radiant tube body is elliptic. Compared with a circular radiant tube consuming the same alloy steel, the effective radiant area of the radiant tube for a workpiece is enlarged, and the heat exchange amount of the radiant tube and the workpiece within unit time is increased. Burning flame diffuses towards two sides of the radiant tube, the radiant temperature of two side wall surfaces of the radiant tube is increased, and the temperature of the radiant tube is uniformly distributed.
Owner:UNIV OF SCI & TECH BEIJING
Mobile terminal
ActiveCN106027092AIncrease the effective radiation areaImprove performanceAntenna supports/mountingsRadiating element housingsPrinted circuit boardElectricity
The invention provides a mobile terminal, relates to the technical field of communication, and is used for increasing a radiating area of an NCF (Near Field Communication) antenna in the mobile terminal to improve the performance of the NCF antenna. The mobile terminal comprises a rear housing and a metal frame; a flexible printed circuit board is attached inside the rear housing; the flexible printed circuit board is provided with a first feed point, a second feed point, a first connection point and a second connection point; the first feed point is electrically connected with the first connection point; the second feed point is electrically connected with the second connection point; the first feed point and the second feed point are overlapped with a metal area; the first connection point and the second connection point are overlapped with a non-metal area; a third connection point and a fourth connection point are arranged on the metal frame; the third connection point is electrically connected with the first connection point; the fourth connection point is electrically connected with the second connection point; and the metal frame among a first metal routing, a second metal routing, the third connection point and the fourth connection point is formed into an annular loop, thereby realizing receiving and sending of NFC signals. The mobile terminal provided by the invention is used in manufacturing of the mobile terminal.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD
NFC antenna device with adjustable self-resonant frequency, electronic equipment and method
PendingCN106299667AFlexible designAdjust the self-resonant frequencySimultaneous aerial operationsRadiating elements structural formsEngineeringElectron
The invention provides an NFC antenna device with adjustable self-resonant frequency, electronic equipment and a method. The NFC antenna device comprises a metal wire and a capacitor device, wherein the metal wire is a spiral ring wire or the like, and a base material can be PCB, FPCB or FPC or the like; the capacitor device is connected to both ends of the metal wire for adjusting the self-resonant frequency. Compared with conventional NFC antennas, the NFC antenna device provided by the invention has the advantages of flexible design, and capability of adjusting the self-resonant frequency; a small number of turns, and an increased effective radiation area of the antenna; more uniform radiation magnetic field due to the spiral ring wire; and good compatibility, good practicability and wider application range.
Owner:SHANGHAI DEMAN ELECTRONICS TECH
Low-frequency broadband efficient array forming structure based on bent disc transducer
InactiveCN111935594ALower resonant frequencyWorking bandwidthTransducers for subaqueous useSound producing devicesBroadbandingWavelength
The invention discloses a low-frequency broadband efficient array forming structure based on a bent disc transducer, which mainly comprises a transmitting array. The transmitting array comprises a plurality of groups of transducer units, the transmitting array is formed by arranging a plurality of groups of same transducer units at equal intervals in the horizontal direction, and the postures of the transducer units in the transmitting array are consistent; the acoustic center distance between the transducer units is not greater than the half wavelength of the transducer units at a resonant frequency point, and therefore the near-field mutual radiation influence on each group of transducer units is kept consistent; each transducer unit is formed by arranging one or more bent disc transducers in the axial direction. Radiation impedance of the bent disc transducers can be changed by arraying the bent disc transducers according to a specific arraying mode, and therefore resonant frequencyof a transmitting array is reduced; working bandwidth is expanded, electro-acoustic efficiency is improved; the transmitting array is enabled to meet development requirements of a future maneuveringdetection system.
Owner:THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
Membrane type water cooled low NOx gas combustion device
PendingCN109442401AEasy to disassembleEasy to replaceGaseous fuel burnerCombustion apparatusCombustorFlue gas
The invention provides a membrane type water cooled low NOx gas combustion device. A cylindrical membrane type water cooled combustion head, a ring-shaped water chamber, a flow sharing device, an air-fuel mixing device, an ignition and fire detection integrated device, a fan, an air inlet silencer, a burner connection flange, a water inlet and outlet, and a gas inlet are included, the membrane type water cooled combustion head is fixedly connected with the ring-shaped water chamber, the air-fuel mixing device is fixed on the ring-shaped water chamber, and the fan is connected with the air-fuelmixing device and provided with the air inlet silencer. The membrane type water cooled low NOx gas combustion device can be installed horizontally, vertically or obliquely, is convenient to disassemble and replace, and can be suitable for existing gas boilers with any forms. According to the membrane type water cooled low NOx gas combustion device, the structure is simple, processing is easy, theflue-gas temperature can be effectively lowered, internal flue-gas recirculation is formed, the effective radiating area of a furnace is increased, and the combustion flame front temperature is lowered, so that production of NOx is lowered.
Owner:JIANGSU SHUANGLIANG BOILER
Radio frequency identification tag antenna applied to dense environment
ActiveCN111478018ASimple structureReduce the number of bendsAntenna supports/mountingsRadiating elements structural formsAxis of symmetryTag antenna
The invention relates to a radio frequency identification tag antenna applied to a dense environment, which belongs to the technical field of wireless antennas. The antenna comprises a tag chip, a loading strip, a radiation patch and a dielectric substrate; the radiation patch comprises a pair of stepped radiation arms, a pair of U-shaped connecting arms, a pair of L-shaped connecting arms and linear connecting arms; the linear connecting arms are symmetrical relative to the symmetry axis of the tag antenna; the pair of stepped radiation arms, the pair of U-shaped connecting arms and the pairof L-shaped connecting arms are all located on the inner side of the linear connecting arms, and the loading strip is located on the outer side of the linear connecting arms; the loading strip is in alinear strip shape and is parallel to the linear connecting arms; when the distance between the loading strip and the radiation patch is 2 mm, the maximum power transmission coefficient of the radiofrequency identification tag antenna is greater than 0.7. When the tag antenna is located in an environment with a large distance between tags, the tag antenna also has a wide frequency band and stable performance. The radio frequency identification tag antenna is simple in structure and good in production manufacturability.
Owner:HEFEI UNIV OF TECH
Miniature loudspeaker
ActiveCN111836175AIncrease the effective radiation areaReduced Amplitude RequirementsElectrical transducersLoudspeakerEngineering
The invention provides a miniature loudspeaker, which comprises a shell, a vibration system and a magnetic circuit system, and is characterized in that a support plate is arranged in the shell; a first through hole is formed in the support plate; the vibration system comprises a voice coil, a first vibrating diaphragm, a diaphragm, a second vibrating diaphragm, a hollow first connecting piece clamped between the first vibrating diaphragm and the diaphragm, and a hollow second connecting piece clamped between the diaphragm and the second diaphragm, wherein the first vibrating diaphragm, the diaphragm and the second vibrating diaphragm are sequentially arranged at intervals along the short axis direction of the voice coil; the first vibrating diaphragm and the second vibrating diaphragm arefixedly held on the shell; the diaphragm is fixedly held on the support plate and covers the first through hole; the first vibrating diaphragm is connected with the voice coil; the first vibrating diaphragm, the shell, the support plate and the diaphragm form a first vibrating diaphragm front cavity; a second through hole is formed in the diaphragm; a third through hole is formed in the second vibrating diaphragm; and the first vibrating diaphragm front cavity is communicated with the outside through the hollow structure of the first connecting piece, the second through hole, the hollow structure of the second connecting piece and the third through hole in sequence. According to the miniature loudspeaker provided by the invention, higher bass performance can be realized.
Owner:AAC TECH PTE LTD
Plane horn antenna capable of achieving gap embedding amplitude calibration
The invention relates to a horn antenna, in particular to a plane horn antenna capable of achieving gap embedding amplitude calibration. The antenna comprises a micro-strip feeder line (1), a horn antenna body (2) and gaps (3), wherein the micro-strip feeder line (1), the horn antenna body (2) and the gaps (3) are integrated on a dielectric substrate (4). The micro-strip feeder line (1) is connected with an antenna port (5) and an antenna narrow port (6). The horn antenna body (2) is composed of a first metal plane (8), a second metal plane (10) and two rows of metallization via hole horn side walls (11), four sub-horns are formed in the horn antenna body (2) through the middle gap (14), the left gap (20) and the right gap (21) forming the gaps (3), one ends of the four sub-horns are close to the antenna narrow port (6), and the other ends of the four sub-horns are close to but no reach an antenna aperture face (19). The aperture efficiency and the gain of the antenna can be improved.
Owner:SOUTHEAST UNIV
Packaging sandwich antenna with function of gap embedded phase amplitude calibration
The invention provides a packaging sandwich antenna with a function of gap embedded phase amplitude calibration, and relates to a horn antenna. The antenna comprises micro-strip feeder line (1), a horn antenna (2) and gaps (3), wherein the micro-strip feeder line (1), the horn antenna (2) and the gaps (3) are integrated on a dielectric substrate (4); the dielectric substrate (4) is located on the inner layer of a three-dimensional package (5); one end of the micro-strip feeder line (1) is connected with an internal circuit (8) through a coplanar waveguide (7) on the packaging side surface; the horn antenna (2) comprises a bottom surface metal plane (9), a top surface metal plane (10) and metallized via hole horn side walls (11); a middle gap (16), a left gap (17) and a right gap (18) are formed in the bottom surface metal plane (9) and the top surface metal plane (10); four sub-horns are arranged in the horn antenna (2), one end of each sub-horn faces the micro-strip feeder line (1), and the other end of each sub-horn is closer to but does not reach an antenna aperture surface (12). With the adoption of the antenna, the antenna gain can be improved.
Owner:NANJING UNIV OF POSTS & TELECOMM
Antenna and multiple input multiple output (MIMO) antenna with same
ActiveCN103036014AGuaranteed miniaturizationImprove performanceAntenna arraysSimultaneous aerial operationsDielectric substrateMimo antenna
The invention relates to an antenna which comprises a first dielectric substrate and a second dielectric substrate. Metal sheets are arranged on two surfaces of the dielectric substrates, space area of the antenna is used fully, and the antenna can be operated at low operating frequency under the environment and simultaneously meets requirements for miniaturization, low operating frequency and broadband multi-mode. In addition, a multiple input multiple output (MIMO) antenna with a plurality of the antennas is further related. The MIMO antenna has high isolation.
Owner:KUANG CHI INST OF ADVANCED TECH
A flat double p-type radiant tube
ActiveCN103697476BIncrease the effective radiation areaLarge radiation heat transferGaseous fuel burnerStraight tubeEllipse
The invention discloses a flat double P type radiant tube which comprises a first straight tube, a three-way tube, a second straight tube, a third straight tube, a first bent tube and a second bent tube. A burner is fixed into a first straight tube mounting pipe, a central spray tube is a gas jet, four spray tubes on the outer side are air jets, the sections of all the spray tubes are elliptic, the proportion of a long edge and a short long edge of an ellipse is as same as that of a long edge and a short long edge of the section of a radiant tube body, and the first straight tube and the three-way tube are thickened. The flat double P type radiant tube has the advantages that the thickened first straight tube can effectively prevent tube wall failure caused by high-temperature corrosion, the thickened three-way tube can prevent bent tube deformation caused by heat stress, and the section of the radiant tube body is elliptic. Compared with a circular radiant tube consuming the same alloy steel, the effective radiant area of the radiant tube for a workpiece is enlarged, and the heat exchange amount of the radiant tube and the workpiece within unit time is increased. Burning flame diffuses towards two sides of the radiant tube, the radiant temperature of two side wall surfaces of the radiant tube is increased, and the temperature of the radiant tube is uniformly distributed.
Owner:UNIV OF SCI & TECH BEIJING
An RFID Tag Antenna Applied in Dense Environment
ActiveCN111478018BSimple structureReduce the number of bendsAntenna supports/mountingsRadiating elements structural formsTag antennaDielectric substrate
Owner:HEFEI UNIV OF TECH
A blackbody surface temperature source based on eddy current heating and its application method
ActiveCN107864528BIncrease the effective radiation areaImprove temperature stabilityCoil arrangementsInduction heating controlControl systemBlack body
Owner:XI AN JIAOTONG UNIV
Gradient multi-order rectangular close-packed frequency-expanding quasi-self-compensating antenna
ActiveCN112768924AExpand the current flow pathIncrease the effective radiation areaSimultaneous aerial operationsRadiating elements structural formsUltra wideband antennasEngineering
The invention discloses a gradient multi-order rectangular close-packed frequency-expanding quasi-self-compensating antenna, and relates to an ultra-wideband antenna. The antenna is provided with a low-consumption high-performance dielectric double-sided copper-clad substrate, wherein the upper surface of the copper-clad surface is provided with two mutually quasi-self-complementary radiation patches and an impedance matching input microstrip feeder line; the lower surface of the copper-clad surface is a metal grounding plate; a groove is engraved on the metal grounding plate; the other end of the impedance matching microstrip feed line which is fed in from the lower part is connected with the first layer basic unit of the left radiation patch; a rectangular notch is formed in the upper right corner of the left radiation patch; the left radiation patch is formed by stacking and extending a series of closely-packed rectangular basic units with scale control ratios step by step from bottom to top; the rectangular close packing mode is formed by stacking from bottom to top, and is formed by recursive composition in a mode that the upper order has one more basic unit than the lower order; the right radiation patch is of a quasi-self-compensation structure which is paired with the left radiation patch; the right copper-clad part is opposite to the left copper-clad part; and the side length of each layer of rectangular basic unit with the scale control ratio of the left radiation patch is gradually changed according to a certain ratio. The effective radiation area of the antenna is improved.
Owner:XIAMEN UNIV
Gradient Multi-Order Rectangular Close-Packed Quasi-Self-Complementary Antenna
ActiveCN112768924BExpand the current flow pathIncrease the effective radiation areaSimultaneous aerial operationsRadiating elements structural formsUltra wideband antennasImpedance matching
A gradient multi-order rectangular close-packed top-frequency quasi-self-complementary antenna relates to an ultra-wideband antenna. A low-cost and high-performance dielectric double-sided copper-clad substrate is set, and two mutually quasi-self-complementary radiation patches and impedance matching input microstrip feeders are arranged on the surface of the copper-clad surface; the lower surface of the copper-clad surface is a metal grounding plate; the metal grounding plate A groove is engraved on it; the other end of the impedance matching microstrip feed line fed below is connected to the basic unit of the first layer of the left radiation patch; there is a rectangular gap in the upper right corner of the left radiation patch; the left radiation patch is formed by a A series of close-packed rectangular basic units with scale control ratios are formed by extending from bottom to top; the rectangular close-packed pattern is formed by stacking bottom to top, recursively combining one more basic unit in the upper order than the lower order. ; The right radiant patch is a quasi-self-complementary structure of the left side radiant patch; the copper-clad part on the right side is opposite to the left side; the side length of each layer of the left radiant patch with a scale control ratio of the basic unit of the rectangle gradually changes according to a certain ratio . Increase the effective radiation area of the antenna.
Owner:XIAMEN UNIV
A kind of antenna and mimo antenna with the antenna
ActiveCN103036014BGuaranteed miniaturizationImprove performanceAntenna arraysSimultaneous aerial operationsDielectric substrateMimo antenna
The invention relates to an antenna which comprises a first dielectric substrate and a second dielectric substrate. Metal sheets are arranged on two surfaces of the dielectric substrates, space area of the antenna is used fully, and the antenna can be operated at low operating frequency under the environment and simultaneously meets requirements for miniaturization, low operating frequency and broadband multi-mode. In addition, a multiple input multiple output (MIMO) antenna with a plurality of the antennas is further related. The MIMO antenna has high isolation.
Owner:KUANG CHI INST OF ADVANCED TECH
Antenna and terminal
ActiveCN109841944AIncrease the effective radiation areaHigh bandwidthAntenna supports/mountingsAntenna earthingsRadiation modeGround plate
The invention provides an antenna and a terminal. The antenna comprises an antenna body, a feeding network and a grounding plate. The antenna body is connected with the grounding plate through the feeding network. The grounding plate is provided with an opening for exciting the radiation mode of the grounding plate so as to couple the antenna body to the grounding plate. Because the radiation modes of the antenna body and the antenna ground are excited simultaneously in the embodiment of the invention, the bandwidth is enhanced.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD
a mobile terminal
ActiveCN106027092BRealize sending and receivingIncrease the effective radiation areaAntenna supports/mountingsRadiating element housingsFlexible circuitsPrinted circuit board
The invention provides a mobile terminal, relates to the technical field of communication, and is used for increasing a radiating area of an NCF (Near Field Communication) antenna in the mobile terminal to improve the performance of the NCF antenna. The mobile terminal comprises a rear housing and a metal frame; a flexible printed circuit board is attached inside the rear housing; the flexible printed circuit board is provided with a first feed point, a second feed point, a first connection point and a second connection point; the first feed point is electrically connected with the first connection point; the second feed point is electrically connected with the second connection point; the first feed point and the second feed point are overlapped with a metal area; the first connection point and the second connection point are overlapped with a non-metal area; a third connection point and a fourth connection point are arranged on the metal frame; the third connection point is electrically connected with the first connection point; the fourth connection point is electrically connected with the second connection point; and the metal frame among a first metal routing, a second metal routing, the third connection point and the fourth connection point is formed into an annular loop, thereby realizing receiving and sending of NFC signals. The mobile terminal provided by the invention is used in manufacturing of the mobile terminal.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD
micro speaker
InactiveCN111836175BIncrease the effective radiation areaReduced Amplitude RequirementsElectrical transducersEngineeringLoudspeaker
The invention provides a micro-speaker, which includes a housing, a vibration system and a magnetic circuit system. A supporting plate is arranged inside the housing, and a first through hole is arranged on the supporting plate; wherein the vibration system includes a voice coil, The first diaphragm, the diaphragm and the second diaphragm arranged at intervals in the side direction, the hollow first connecting member sandwiched between the first diaphragm and the diaphragm, and the hollow first connecting member sandwiched between the diaphragm and the second diaphragm Hollow second connecting piece; both the first diaphragm and the second diaphragm are held on the housing, the diaphragm is held on the support plate and covered in the first through hole, the first diaphragm is connected to the voice coil; the first diaphragm The diaphragm is surrounded by the shell, the support plate and the diaphragm to form the first diaphragm front chamber, the diaphragm is provided with the second through hole, the second diaphragm is provided with the third through hole, and the first diaphragm front chamber passes through the first diaphragm in turn. The hollow structure of a connecting piece, the second through hole, the hollow structure of the second connecting piece and the third through hole communicate with the outside. The micro-speaker provided by the invention can realize stronger bass performance.
Owner:AAC TECH PTE LTD
Aviation airborne knife-shaped antenna
InactiveCN111082197AIncrease the effective radiation areaHigh gain performanceCollapsable antennas meansAntenna supports/mountingsStructural engineeringElectrical and Electronics engineering
The invention discloses an aviation airborne knife-shaped antenna, relates to the technical field of aviation airborne antennas, and solves the problems that most of existing conductor antennas and outer antenna shells are of closed integrated structure design, and parts are inconvenient to disassemble for maintenance and replacement. The aviation airborne knife-shaped antenna comprises shell antenna plates, each shell antenna plate comprises air deflectors, a blocking and leaning surrounding strip and a positioning wedge block, the front ends and the rear ends of the two shell antenna platessymmetrically and obliquely support the two air deflectors, and the two shell antenna plates are bilaterally symmetrical and jointly support to form a shell of a main body; a threaded locking rod is hoisted in the middle of a groove in the bottom of a mounting seat in a cross-brace manner; a through groove is formed in the top end supporting and connecting plate of the shell antenna plate, and thetop end section of the lifting antenna plate is inserted into the through groove in an abutting mode. The two rows of squeezing and pushing plates can be limited and slide between the squeezing and pushing plates and the top plate of the mounting base through the two limiting barrier strips, and the squeezing and pushing plates are prevented from rotating along with screwing and shaking of the threaded locking rod.
Owner:单炜
Antennas and Terminals
ActiveCN109841944BIncrease the effective radiation areaHigh bandwidthAntenna supports/mountingsAntenna earthingsSoftware engineeringRadiation mode
The invention provides an antenna and a terminal. The antenna includes: an antenna body, a feed network, and a ground plate; wherein, the antenna body is connected to the ground plate through the feed network; the ground plate is provided with an opening for exciting the radiation mode of the ground plate, The antenna body is coupled to the ground plate. In the embodiments of the present invention, the bandwidth is improved because the radiation modes of the antenna body and the antenna ground are excited at the same time.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD
Acoustic waveguide horn
ActiveCN101557546BIncrease the effective radiation areaRadiation area is goodFrequency/directions obtaining arrangementsLower limitEngineering
The invention discloses a sound-transmitting waveguide horn. It includes a bass horn and a treble horn, the bass driver is provided at the rear end of the bass horn, the treble driver is provided at the rear end of the treble horn, the treble horn is installed in the cavity of the bass horn, and a through hole is provided on the wall of the treble horn . Because there are through holes on the opening wall of the treble horn, the bass sound waves can be radiated through these holes, increasing the effective radiation area of the bass horn, avoiding the chamber effect in the bass horn cavity, and ensuring the direction control ability and working frequency of the treble horn The lower limit can also make the bass horn have a good radiation area without increasing the volume of the bass horn, which increases the application range of the horn.
Owner:GUANGZHOU RUIFENG AUDIO TECH
Single-feed circularly polarized RFID reader-writer antenna
ActiveCN111786079AIncrease the effective radiation areaHigh gainAntenna supports/mountingsRadiating elements structural formsDielectric plateEngineering
The invention discloses a single-feed circularly polarized RFID reader-writer antenna, which comprises radiation patches, a grounding probe, an FR4 dielectric plate, a perturbation ring patch, a coaxial connector and a metal floor, the radiation patches comprise a square patch and four 270-degree fan-shaped patches, and are positioned on the upper surface of an upper dielectric plate; the four 270-degree fan-shaped patches comprise a first fan-shaped patch, a second fan-shaped patch, a third fan-shaped patch and a fourth fan-shaped patch, and the circle centers of the four fan-shaped patches coincide with the four right-angle vertexes of the square patch respectively. According to the single-feed circularly polarized RFID reader-writer antenna, by introducing the perturbation ring patch, the impedance matching performance of the antenna is improved, and the circular polarization bandwidth of the antenna is broadened; the gain of the antenna is improved by adopting the grounding probe;in addition, the antenna has the characteristics of the simple structure, low cost, the light weight and the like, and is very suitable for application of ultrahigh frequency radio frequency identification reader-writer antennas in China and multiple countries.
Owner:DALIAN MARITIME UNIVERSITY
Antenna structure and terminal equipment
ActiveCN112821046AImprove production efficiencyIncrease the effective radiation areaAntenna supports/mountingsRadiating elements structural formsTerminal equipmentEngineering
The invention relates to an antenna structure and terminal equipment. The antenna structure is applied to the terminal equipment, and the antenna structure comprises a partial conductive shell which is provided with a first gap; and a radiator arranged on the inner side of the conductive shell, wherein the radiator is provided with a second gap, the second gap is covered on the first gap, and the radiator and the conductive shell can be coupled at the first gap and the second gap to form an antenna for receiving and transmitting at least one frequency band. According to the embodiment of the invention, the wireless signal is transmitted and received through the coupling of the radiator and the conductive shell, and the use of a spring needle or an elastic sheet and other type of feed mechanisms can be avoided, so that the feed structure and the installation process required for transmitting and receiving the wireless signal at the first gap of the conductive shell are simplified, and the antenna manufacturing efficiency is improved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Loudspeaker and electronic equipment
PendingCN113596680ASmall sizeReduce occupancyDiaphragm materialsNon-planar diaphragms/conesLoudspeakerEngineering
The invention discloses a loudspeaker and electronic equipment, and the loudspeaker comprises a magnetic circuit system which comprises a first magnet part and a second magnet part which are arranged at an interval, a first magnetic gap is formed between two opposite opposite magnetic poles at the upper parts of the first magnet part and the second magnet part, and a second magnetic gap is formed between two opposite opposite magnetic poles at the lower parts of the first magnet part and the second magnet part, and the magnetic pole distribution directions of the two opposite opposite magnetic poles at the upper part and the two opposite opposite magnetic poles at the lower part are opposite; the axial direction of a flat voice coil is perpendicular to the vibration direction of the vibrating diaphragm, the flat voice coil is provided with two first wire sections which are distributed in the vibration direction at intervals, and the two first wire sections are located in the first magnetic gap and the second magnetic gap respectively; a long-strip-shaped shell forms an accommodating space, the accommodating space is used for accommodating and fixing the vibration system and the magnetic circuit system, the shell is provided with a first end part and a second end part which are opposite to each other, the first end part is connected with the vibrating diaphragm, and the width size of the first end part is larger than that of the second end part.
Owner:GOERTEK INC
A kind of antenna and electronic equipment
ActiveCN104009287BIncrease the effective radiation areaImprove conductivityAntenna supports/mountingsRadiating elements structural formsElectricityElectrical conductor
The invention discloses an antenna and an electronic device. The antenna comprises a carrier, a conductor film attached to the carrier, an antenna main body arranged on the first portion of the conductor film, and a feed transmission line which is arranged on a second portion, which is different from the first portion, of the conductor film, and comprises a first net-like conducting layer, a second net-like conducting layer and a transmission line, wherein the transmission line is disposed between the first net-like conducting layer, and the second net-like conducting layer, and the transmission line is connected with the antenna main body. Through the antenna, the effective radiation area of the antenna can be increased, and the antenna efficiency is improved.
Owner:LENOVO (BEIJING) LTD
Three-dimensional encapsulation surface antenna capable of achieving gap embedding amplitude calibration
InactiveCN104716438AImprove Caliber EfficiencyHigh gainWaveguide hornsDielectric substrateHorn antenna
The invention relates to a horn antenna, in particular to a three-dimensional encapsulation surface antenna capable of achieving gap embedding amplitude calibration. The antenna comprises a metallization perpendicular via hole feeder line (1), a horn antenna body (2) and gaps (3), wherein the metallization perpendicular via hole feeder line (1), the horn antenna body (2) and the gaps (3) are integrated on a dielectric substrate (4) which is located on the topmost face of a three-dimensional encapsulation part (5), and one end of the metallization perpendicular via hole feeder line (1) is connected with an internal circuit (8). The horn antenna body (2) is composed of a bottom face metal plane (6), a top face metal plane (9) and metallization via hole side walls (11), the gaps (3) are formed in the bottom face metal plane (6) and the top face metal plane (9), and four sub-horns are formed in the horn antenna body (2) through the middle gap (17), the left gap (18) and the right gap (19), and electromagnetic wave energy in the antenna is distributed on an antenna aperture face (12) at equal amplitude. The aperture efficiency of the antenna can be improved.
Owner:SOUTHEAST UNIV
Radiometer
PendingCN111044438AIncrease the effective radiation areaAvoid interferenceLighting applicationsMechanical apparatusRadiometerEngineering
The invention provides a radiometer. The radiometer comprises a lamp source, a host and a supporting device used for supporting the lamp source and the host, wherein the lamp source and the host are oppositely arranged in parallel up and down; the lamp source comprises a lampshade, a lamp holder and an LED chip arranged on the lamp holder, the LED chip is arranged in the lampshade, and the LED chip comprises a UVB lamp bead, a UVA lamp bead and a blue light lamp bead; and the host comprises a radiation intensity probe, and the radiation intensity probe is used for detecting the radiation intensity of UVB, UVA and blue light. The radiometer can establish ultraviolet and blue light related biological detection models at the same time.
Owner:GUANGDONG BOXI BIO TECH CO LTD
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