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Linear vibrator device
InactiveCN101365256AResonance Amplitude SuppressionWithstand high voltageElectrical transducersResonance amplitudeEngineering
The invention relates to a vibrator, in particular to an electric-acoustic transformation acoustic generator with the function of vibration. A magnetic fluid is arranged at the bottom of a bowl-shaped magnetizer. A protruding elastic damping balance is arranged in the corresponding position of the magnetic fluid on a bottom cover. The elastic damping balance and a vibration unit with magnetic fluid are propped against each other in the vibration state, so as to overcome the disadvantage of small damp in a miniature electric-acoustic generator in the related technology, enable the resonance amplitude to be inhibited when the miniature electric-acoustic generator works, increase the voltage to be borne by the miniature electric-acoustic generator and widen the effective frequency band of the miniature electric-acoustic generator. Therefore, the resonance amplitude is inhibited, so that the collision of the inner parts of the acoustic generator can be avoided, and the power to be borne by the invention is increased. Besides, the counterforce is strengthened when the resonance happens, so that the effective frequency band of the electric-acoustic transformation acoustic generator gets wider.
Owner:瑞声声学科技(常州)有限公司
Beam up-tilt high-gain omnidirectional antenna
PendingCN107732441ASimple designDoes not affect impedance characteristicsParticular array feeding systemsRadiating elements structural formsUltra-widebandOmnidirectional antenna
The invention discloses a beam up-tilt high-gain omnidirectional antenna, which comprises a first sub-array and a second sub-array which are coaxially arranged, wherein array elements are U-shaped symmetric oscillators. A dielectric substrate is provided with feeding lead wires for connecting the oscillators of the first sub-array and the second sub-array, the first sub-array and the second sub-array are connected with feeding cables by means of the feeding lead wires, the characteristic impedance of the feeding cable connected with the first sub-array is Z01, the characteristic impedance of the feeding cable connected with the second sub-array is Z02, the input impedance of the first sub-array Zin1 equals the characteristic impedance of the feeding cable connected with the same, the inputimpedance of the second sub-array Zin2 equals the characteristic impedance of the feeding cable connected with the same, that is, Z01=Zin1, Z02=Zin2, the first sub-array is an M-element sub-array, the second sub-array is an N-element sub-array, the M and the N are natural numbers greater than or equal to 1, and the M and the N are not equal. The beam up-tilt high-gain omnidirectional antenna disclosed by the invention has the advantages of having ultra wideband, high gain, high power, high efficiency and simple structure, and being horizontally omnidirectional, beam up-tilt, light and portable, and economical and durable.
Owner:TONGYU COMM INC
Multi-point excitation loudspeaker array
ActiveCN102361501ASmall directivityLittle change in directivityTelevision system detailsColor television detailsTotal harmonic distortionEngineering
The invention relates to a multi-point excitation loudspeaker array which is characterized in that: the array comprise a basin rack which is provided with at least five independent sound cavities, a number of the sound cavities is an odd number, each sound cavity is provided with a loudspeaker unit, all loudspeaker units are arranged in straight lines in the basin rack and are on a same installation plane, and distances between adjacent loudspeaker units are same. The invention has the characteristics of ingenious structure, simplicity and compactness, the loudspeaker units are arranged in an easily realized mode, when adding the loudspeaker units, small directive change of the whole array is ensured, total harmonic distortion and unevenness of the array are decreased, thus a sound pressure level of the array is raised, sound quality and reliability are ensured, and the array can be designed as a component integrated in a flat television or an external accessory of the flat television to improve the sound quality further. The multi-point excitation loudspeaker array has the advantages of good frequency response, excellent directive, large bearing power, small distortion, a high sound pressure level and the like.
Owner:WUXI JIEFU ELECTROACOUSTIC
A terahertz waveguide polarization attenuation device
ActiveCN109037871AWide operating frequency rangeLarge attenuation dynamic rangeWaveguide type devicesUltrasound attenuationMicrowave
The invention discloses a terahertz waveguide polarization attenuating device, comprising a housing, an electromagnetic wave transceiving unit arranged in the housing, a first off-axis paraboloid mirror, a second off-axis paraboloid mirror, a polarization grid, a turntable and a microwave absorbing assembly. The device has the advantages of wide working band range, large attenuation dynamic range,high attenuation precision and large bearing power, and each module of the device can be conveniently disassembled. In the case of large frequency range span, the module can be simply replaced to form the attenuation device in the required frequency band.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
Miniaturized high-gain dual-polarized omnidirectional antenna
PendingCN107611601AHigh gainImprove omnidirectionalityRadiating elements structural formsAntennas earthing switches associationOmnidirectional antennaDielectric
The invention provides a miniaturized high-gain dual-polarized omnidirectional antenna comprising a V-polarized antenna, an H-polarized group array antenna and an H-polarized subarray feeder panel. The V-polarized antenna comprises M half-wave vibrators which are arranged on the V-polarized antenna substrate and V-polarized antenna feeders which are connected with the half-wave vibrators. The H-polarized group array antenna comprises N H-polarized array units which are arranged in parallel to form the array. Each H-polarized array unit comprises a dielectric disc. The circumference of the dielectric disc is provided with X H-polarized vibrators and H-polarized antenna feeders which are connected with the H-polarized vibrators. The V-polarized antenna is arranged at the external side of theH-polarized subarray feeder panel in parallel. The H-polarized array units are arranged to be intersected with the H-polarized subarray feeder panel and the V-polarized antenna. The H-polarized subarray feeder panel performs feeding to the H-polarized array units, wherein M, N and X are natural numbers greater than or equal to 1. The omnidirectional antenna of being high-gain, omnidirectional, dual-polarized, high-isolation, high-power, short and beautiful, simple in structure and economical and durable can be provided for the outdoor WIFI wireless access point.
Owner:TONGYU COMM INC
Strip-shaped loudspeaker box with mirror image type low-frequency radiators
ActiveCN105554597AReasonable distributionImprove transient stabilitySingle transducer incorporationMicrophonesFrequency soundWoofer
The invention relates to a strip-shaped loudspeaker box with mirror image type low-frequency radiators. A box body is in a long flat strip shape. Low-frequency radiator installation holes symmetrical in position are formed in the upper and lower surfaces of the right half part, in the long axis direction, of the box body respectively, and the two low-frequency radiators are correspondingly installed in the two upper and lower low-frequency radiator installation holes in a mirror symmetry mode. A mid-low-pitch loudspeaker installation hole is formed in the left half part, in the long axis direction, of the box body, a mid-low-pitch loudspeaker is installed in the mid-low-pitch loudspeaker installation hole, and the mid-low-sound loudspeaker radiates sounds towards the part over the box body. A high-pitch loudspeaker installation table is arranged on the front side face of the left end, in the long axis direction, of the box body, a high-pitch loudspeaker is installed on the high-pitch loudspeaker installation table, and the high-pitch loudspeaker radiates sounds towards the part right ahead of the box body. The strip-shaped loudspeaker box has the acoustic properties of being small in distortion, good in low frequency, capable of bearing high power and excellent in high-frequency performance; the transient stability of the loudspeaker box can be improved, and thus the loudspeaker box can achieve a good sound effect when radiating low-frequency sounds.
Owner:WUXI JIEFU ELECTROACOUSTIC
Thin loudspeaker with multiple suspension supports
PendingCN109889949AReduce nonlinear distortionMeet the use requirementsFrequency/directions obtaining arrangementsNonlinear distortionMagnetic poles
The invention relates to a thin loudspeaker with multiple suspension supports. The loudspeaker comprises a basin stand body, a U-shaped iron, a magnet, a magnetic pole core, an auxiliary magnet, a voice coil, a voice basin with a folded ring, a positioning support piece, a supporting framework, a first lead, a second lead, a wiring board, a dust cap, and a cover plate. Through the voice coil, thepositioning paper sheet, the voice basin with a folded ring, and the supporting framework, a suspension system is formed. On the premise that the low-frequency radiation quality of the loudspeaker isguaranteed, the overall structural height of the loudspeaker is further reduced through the loudspeaker product, nonlinear distortion of a sound basin, a voice coil and the like in a magnetic circuitsystem during work of the loudspeaker is reduced through the multi-suspension supporting structure, and installation and use of the product in high-grade thin televisions such as OLEDs are facilitated.
Owner:WUXI JIEFU ELECTROACOUSTIC
High-fidelity combined loudspeaker box for curved screen
ActiveCN105072520AIncrease sound pressureSmall distortionFrequency/directions obtaining arrangementsTransducer casings/cabinets/supportsLarge screenWoofer
The invention relates to a high-fidelity combined loudspeaker box for a curved screen. The high-fidelity combined loudspeaker box comprises a box body; the high-fidelity combined loudspeaker box is characterized in that the section of the box body is L-shaped; the box body is in a long shape with a wide end and a narrow end in an overhead view; the front side surface of the box body is divided into upper and lower two stages; the front side surface of the upper stage shrinks backwards, while the front side surface of the lower stage stretches forwards, and the front side surface of the upper stage and the front side surface of the lower stage are in transitional connection with each other through a middle plane; a bass loudspeaker unit of which a sound radiation direction faces right above the box body is mounted at the wider end of the top plane of the box body, and a treble loudspeaker unit and a midrange loudspeaker unit, of which the radiation directions both face right ahead of the box body, are mounted at the narrower end of the front side surface of the lower stage of the box body; furthermore, an inverted-phase sound outlet is formed in the box body. The high-fidelity combined loudspeaker box for the curved screen is capable of realizing the multiple-frequency splitting technical advantages of treble, midrange and bass of the loudspeaker box and also overcoming the sound replay defects of the combined loudspeaker; when used in combination with a large-screen video-audio apparatus, the high-fidelity combined loudspeaker box is capable of radiating sound with high fidelity and greatly improving the subjective sound hearing effect, and furthermore, the appearance can be beautified.
Owner:WUXI JIEFU ELECTROACOUSTIC
Sound box based on oppositely buckled passive radiator
InactiveCN105142065ARadiation area is largeIngenious structureFrequency/directions obtaining arrangementsPassive radiatorBass (sound)
The invention relates to a sound box based on an oppositely buckled passive radiator. The sound box comprises a prolate box body, a high pitch loudspeaker mounting hole and a mid-bass loudspeaker mounting hole distributed along the length direction of the box body are opened in the top of the box body, a high pitch loudspeaker unit is mounted in the high pitch loudspeaker mounting hole, and a mid-bass loudspeaker unit is mounted in the mid-bass loudspeaker mounting hole; a passive radiator unit is mounted on the right side of the mid-bass loudspeaker unit through a radiator bracket, and the central axial line of the passive radiator unit is mutually parallel to the central axial lines of the high pitch loudspeaker unit and the mid-bass loudspeaker unit; the radiator bracket is provided with two sound outlets which are symmetrically arranged at 180 degrees, the two sound outlets respectively face to front and back side faces of the box body, and sound outlet holes communicated with the sound outlets are respectively formed in the front and back side faces of the box body. The sound box provided by the invention both has the advantages of the passive radiator sound box and can perfect the defects of poor vertical transient stability, high cut-off frequency and large total loss Ql value, so as to ensure a good sound effect for the sound box.
Owner:WUXI JIEFU ELECTROACOUSTIC
Protecting component
ActiveCN101989519AEasy to assembleRealize the manufacturingHeating/cooling contact switchesEmergency protective devicesSize reductionResistor
The present invention provides a protecting component which realizes small size and slimness and senses the heating of a resistance heating component for reliable operation thereby improving reliability, and a protecting device with the protecting component. The protecting component (10) comprises the following components: a ceramic chip body (12); a fusible alloy fuse component (20) which is configured on a surface of the ceramic chip body (12); the resistance heating component (25) which is configured in a through hole (24); and leading-out leads (15-17) which are configured to a back surface. The heating component (25) is composed of a resistor with a preset resistance value and is in a filling state because the heating component is embedded in the through hole (24). Therefore the heat of the resistor causes the fusible alloy fuse component (20) to operate correctly and quickly through the ceramic chip body (12) with excellent heat conductivity. Particularly, the protecting component has the following practical effects: enlarged bearing power of the resistance heating component (25), effectively exerted space efficiency, and facilitated back length reduction, size reduction and slimming.
Owner:SCHOTT JAPAN CORP
Thin type loudspeaker sound box
PendingCN107087244AEasy to installChange sound directionalityTelevision system detailsLoudspeaker transducer fixingEngineeringSound quality
The invention relates to a thin type loudspeaker sound box. The thin type loudspeaker sound box comprises a box body for containing at least one thin type loudspeaker, a low-frequency sound-guiding plate is arranged right above sound radiation of the thin type loudspeaker, at least a tweeter unit is arranged in the box body, an upper shell of the box body, close to the tweeter unit, is provided with high-pitch radiating grooves to improve the reliability of the tweeter unit during long-term full-load operation, and the thin type loudspeaker is formed by a frame, a U-yoke, a magnet, a T-yoke, a voice coil, a cone with edges, a positioning support plate, and a wiring board. The cone with the edges and the positioning support plate are specially designed so that the overall structural height is reduced on the precise of not reducing the output sound pressure level of the loudspeaker, and the installation and the application in the thin type sound box can be facilitated. According to the thin type loudspeaker sound box, the low-frequency tone quality can be improved with thinner structure, and the reliability is improved.
Owner:WUXI JIEFU ELECTROACOUSTIC
Full-band television transmitting antenna based on rhombic oscillators
InactiveCN105337041ARealize full-band transmission functionWithstand high powerSimultaneous aerial operationsElectrical conductorBroadband
The invention relates to a full-band television transmitting antenna based on rhombic oscillators. Dipole group arrays are rhombic dipole group arrays which are formed by four pairs of rhombic dipoles through coaxial arrangement; a multi-section broadband adjustable power divider feed network is divided into a vertical part and a horizontal part, the horizontal part is parallel to a reflecting board, the external conductors of the vertical part and the horizontal part are connected by square copper blocks, and the square copper blocks are fixed on the reflecting board; the external conductor of the output end of the multi-section broadband adjustable power divider feed network is connected with the internal side strip of a strip-shaped parallel line, and the internal conductor stretches out to be connected with the external side strip of the strip-shaped parallel line; and one end of the a balun transmission line is connected with the center of the external side strip of the strip-shaped parallel line, and the other end is connected with the square copper blocks. A mode of parallel feeding of the rhombic dipole group arrays is adopted so that working bandwidth of which standing-wave ratio less than 1.2 is enabled to be more than 360MHz, and a full-band transmitting function is realized; and bearing power is high, manufacturing cost is low, and thus the full-band television transmitting antenna based on the rhombic oscillators is especially suitable for a decimetric wave band ground television transmitting system.
Owner:DALIAN MARITIME UNIVERSITY +1
Digital television transmitting antenna based on E-shaped patch
ActiveCN105186130AImproving Impedance BandwidthIncrease the withstand powerRadiating elements structural formsAntennas earthing switches associationElectrical conductorEngineering
The invention relates to a digital television transmitting antenna based on an E-shaped patch. The digital television transmitting antenna comprises a formation plate, the E-shaped patch, a rectangular parasitic patch, an input connector and a retaining screw, wherein the rectangular parasitic patch, the E-shaped patch and the formation plate are orderly arranged in parallel from top to bottom to form a main structure of a stacked antenna; the E-shaped patch is provided with two symmetric rectangular gaps, and the length of a middle wing is smaller than that of two sides; an outer conductor of the input connector is fixed on the formation plate, and an inner conductor of the input connector penetrates through the formation plate and is connected to the E-shaped patch to feed; the rectangular parasitic patch at the upper layer is coupled by the E-shaped patch to feed. The digital television transmitting antenna based on the E-shaped patch provided by the invention satisfies the use requirement of a terrestrial television broadcasting transmitting system by adopting a multi-resonator technology to improve the impedance bandwidth and power handling of antennas; the invention has the characteristics of being wide in working band, high in gain, small in input standing-wave ratio, high in power handling, simple in processing, convenient in debugging and the like, and is applicable to a terrestrial television transmitting antenna system of a decimeter wave band.
Owner:LIAONING PUTIAN DIGITAL CO LTD
Direct-current path integrated broadband strip-line combiner
InactiveCN102694223ASimple structureEasy to produceWaveguide type devicesElectrical conductorEngineering
The invention provides a direct-current path integrated broadband strip-line combiner which comprises a cavity, a cover plate and a transmission wafer, wherein the bottom of the cavity body is provided with a plurality of teflon bases, the transmission wafer is arranged on the teflon bases, the two sides of the cavity are respectively provided with a connector, the transmission wafer is connected with the inner conductors of the connectors, and the cover plate is fixed on the cavity through screws. The combiner skillfully physically merges a direct-current path and a radio frequency channel together without an extra direct-current path. The combiner is simple in structure, easy to produce, small in volume, excellent in performance, and large in bearing power; and radio frequency and DC (direct current) share the transmission wafer without the extra direct-current path, and the transmission wafer is prepared through one-step forming, so that the combiner is low in cost, easy to machine, high in assembling efficiency, and suitable for mass production.
Owner:SDP TELECOM SUZHOU
Novel surface mount-type microwave isolator
InactiveCN101777681AMake electrical connectionsPractical craftWaveguide type devicesMicrowaveElectrical conductor
The invention relates to a surface mount-type microwave isolator, wherein a casing thereof is formed with a half-opened cylindrical cavity body and is provided with a port at the sidewall thereof, a lug boss which is provided with a through hole is arranged at the position, opposite to the port, on the sidewall of the casing; the half-opened cylindrical cavity body of the casing is internally provided with a permanent magnet, a uniform magnet conducting chip, a ferrite, a central conductor and a temperature compensation plate, and is also covered by a cover board, the central conductor passes through the port on the sidewall of the casing to stretch out of the cavity body; a port pin insulator is installed in the through hole of the lug boss at the sidewall of the casing, and a port pin is installed in the port pin insulator and is electrically connected with the central conductor. Due to the tight fit between the port pin insulator and the through hole of the lug boss as well as between the port pin and the port pin insulator, the central conductor is welded with the port pin so that the size and the position of the port pin are quite firm and stable, thereby obviously enhancing the reliability of the isolator on the basis of not changing the performance of devices, in addition, the surface mount-type microwave isolator is easy for large-scale production.
Owner:SDP TELECOM SUZHOU
Overmoded high power pulse terahertz power detector
InactiveCN103398776AReduce complexityWithstand high powerPhotometry using electric radiation detectorsElectrical resistance and conductancePower detector
The invention discloses an overmoded high power pulse detector. A hot carrier effect of a strong electric field in a semiconductor is taken as a basic working principle, and measurement is realized according to resistance variation of the semiconductor. The detector comprises a WR2.8 standard waveguide with a smaller outlet surface, a WR2.8-WR8.0 transition waveguide with an outlet surface changing from small to large, a WR8.0 standard waveguide with a relatively larger outlet surface, a semiconductor detection chip and a matching load at the rear end. The peak power which can bear a pulse can reach 100 W, the response speed is smaller than 1 ns, and the difficulty in detection chip processing and detector integration is relatively smaller. The detector is suitable for high power pulse measurement in a frequency range of 0.3-0.4 THz.
Owner:NORTHWEST INST OF NUCLEAR TECH
Surface-mounted microwave circulator with novel port structure
InactiveCN101984518AAccurate and stable positioningMake electrical connectionsWaveguide type devicesSemi openMicrowave
The invention relates to a surface-mounted microwave circulator with novel port structure, wherein, a shell is of semi-open cylindrical cavity structure; the side wall of the shell is provided with three port slot holes; bosses are respectively arranged on the positions on the side wall of the shell, corresponding to the three port slot holes; the semi-open cylindrical cavity of the shell is internally provided with a permanent magnet, a uniform magnetic conducting strip, a ferrite, a central conductor and a temperature compensation strip; the top of the shell is covered with a cover board; the central conductor extends out of the cavity through the port slot holes on the side wall of the shell; the three bosses on the side wall of the shell are provided with through holes, and each through hole is provided with a port pin insulator; each port pin insulator is provided with a port pin; and the three port pins are electrically connected with the central conductor. The package structure obviously improves the reliability of the microwave circulator and obviously enhances the welding qualification rate without changing the performances of the circulator. The surface-mounted microwave circulator has the advantages of small volume, excellent performances, high power handling, wide temperature range and the like, thus being applicable to large-scale production.
Owner:SDP TELECOM SUZHOU
Full-band double-layer trapezoidal digital television transmitting antenna
PendingCN110690551AWithstand high powerVSWR is smallParticular array feeding systemsAntenna supports/mountingsMetal stripsImpedance Converter
The invention discloses a full-band double-layer trapezoidal digital television transmitting antenna, which includes an antenna unit, a connector, and a reflection plate. The connector supplies powerto the antenna unit. The connector and the antenna unit are fixed to the reflection plate. The antenna unit includes two groups of double-layer trapezoidal dipole units, adjustable insulating screws,a first feeding metal strip, a second feeding metal strip, a stepped linear impedance converter, a balun structure and a support structure. The stepped linear impedance converter includes a vertical linear impedance converter, a horizontal stepped impedance converter, and a compensating complex impedance connector which are connected successively. The full-band double-layer trapezoidal digital television transmitting antenna can cover the full frequency band of a digital television, can withstand large power, has a low voltage standing wave ratio, low cost, and high gain, and is easy to debug.
Owner:DALIAN MARITIME UNIVERSITY +1
Double-sided radiation acoustic exciter
PendingCN110430510AMeet the use requirementsImprove sound qualityTelevision system detailsElectrical transducersMagnetic polesVoice coil
The invention relates to a double-sided radiated sound exciter. The exciter comprises a basin stand, a bidirectional conductive magnet, a first magnet, a first magnetic pole core, a first voice coil,a first positioning support chip, a first bearing ring, a first flat plate, a first binding post, a second magnet, a second magnetic pole core, a second voice coil, a second positioning support chip,a second bearing ring, a second flat plate and a second binding post. On the premise that the thickness of the exciter is low, the exciter can push the two flat plates to radiate sound in two directions at the same time through the two bidirectional magnetic circuit systems, the exciter is suitable for being directly attached to a glass screen and a rear machine shell of a high-grade thin television such as an OLED to be used, and the glass screen and the rear machine shell of the television can be pushed to produce sound at the same time.
Owner:WUXI JIEFU ELECTROACOUSTIC
Ultra-wideband frequency band synthesis circuit
InactiveCN105390784ARealize the synthesis functionWithstand high powerWaveguide type devicesUltra-widebandLow frequency band
The invention discloses an ultra-wideband frequency band synthesis circuit. The ultra-wideband frequency band synthesis circuit comprises a through path and a coupled path. A low frequency band input port and a synthesis output port are arranged on two ends of the through path. A high frequency band input port and a load port are arranged on two ends of the coupled path. The through path and the coupled path are composed of microstrip lines. The microstrip lines are made of ceramic sheets or white sapphire sheets. Both the thickness and the width of the microstrip lines are 0.127 mm, and coupled gaps among the microstrip lines are 0.127mm. The ultra-wideband frequency band synthesis circuit has the advantages that 250KHz-70GHz frequency band synthesis bandwidth requirements are met, the borne power is relatively large, the loss of the frequency high end is less than that of a conventional method, and the power of the high end is saved.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Method for implementing bandstop filter with tunable bridge
InactiveCN103227616AReduce volumeImprove filtering effectMultiple-port networksOut of band rejectionElectronic communication
The invention discloses a tunable bandstop filter, relates to the field of electronic communication, and aims to solve the problem that the conventional bandstop filter is simplex in implementation method, complicated in structure, large in volume and poor in reliability. In order to obtain a tunable filter with a compact structure and good performance, a capacitor-coupled structure is adopted in a design. By a bridge network method, an LC (lumped component) electrically tunable band-pass filter is designed; the rectangle coefficient and the out-of-band rejection of the LC electrically tunable band-pass filter are improved; and the LC electrically tunable band-pass filter has a wide frequency adjusting range and good filtering performance.
Owner:王少夫
Digital television transmitting antenna of horn structure
ActiveCN105186110AWithstand high powerInput VSWR is smallRadiating elements structural formsElectrical conductorCoaxial line
The invention relates to a digital television transmitting antenna of a horn structure. The digital television transmitting antenna of the horn structure comprises a horn shaped dipole array, a branch feeder conductor, a multi-section wideband tunable power divider network, an input connector and a reflector plate; the horn shaped dipole array is composed of multiple pairs of horn shaped dipoles in a coaxial arrangement and forms a horizontally polarized antenna array; an output end of the multi-section wideband tunable power divider network is connected with the branch feeder conductor; the branch feeder conductor and an inner surface of a metal tube form a coaxial line; the branch feeder conductor stretches out from one dipole of each pair of the horn shaped diploes, and is connected with another dipole; an outer conductor of the input connector is fixed on the reflector plate, and an inner conductor of the input connector penetrates through the reflector plate and is connected with an input end of the multi-section wideband tunable power divider network. The digital television transmitting antenna of the horn structure provided by the invention satisfies the use requirement in a terrestrial radio and television transmitting system by improving the impedance bandwidth and power handling of array antennas, and has the characteristics of being wide in working band, small in input standing-wave ratio, high in power handling, simple in processing, easy in debugging and the like.
Owner:LIAONING PUTIAN DIGITAL CO LTD
Electric-control switching multi-polarization horn antenna
PendingCN109449600AAntenna bandwidth is wideWithstand high powerWaveguide hornsWaveguide type devicesHorn antennaPhysics
The invention discloses an electric-control switching multi-polarization horn antenna, and relates to the technical field of a communication antenna. The horn antenna comprises a horn antenna body andalso comprises a polarization controller and a polarization switching device, wherein the control module is used for enabling the horn antenna to work in modes of horizontal polarization, vertical polarization, left-hand circular polarization or right-hand circular polarization by controlling a linear polarization control generation module, a circular polarization control generation module and apolarization selection module. By the antenna, rapid switching among different polarization modes can be achieved, and switching employs electric switching rather than artificial antenna replacement.With the adoption of the antenna, the test time can be effectively reduced, the frequency of replacing the antenna by a tester is reduced, and the characteristic of a tested device under various polarization modes is more accurately measured.
Owner:胡南
Full-duplex meteoric trail communication device based on single antenna
The invention discloses a full-duplex meteoric trail communication device based on a single antenna, and relates to the field of meteoric trail communication. The device comprises a link controller, a modem, a transceiver, a power amplifier, and a diplexer. The device employs the diplexer which is large in withstood power, is small in incoming loss, and is high in receiving and transmitting isolation. A receiving channel and a transmitting channel are combined into one full-duplex channel under the condition of guaranteeing the communication performance of a system. The full-duplex communication between different meteoric trail communication devices can be completed through one antenna, thereby reducing the number of antennas, reducing the requirements for an antenna construction field, and shortening the starting construction time of meteoric trail communication. The device is large in withstood power, is high in receiving and transmitting isolation, is simple and convenient in starting construction, is high in integration degree, is stable and reliable in performance, is especially suitable for a meteoric trail communication occasion where the antenna construction field is limited and there are special requirements for starting construction.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Miniaturized high-power isolated synthetic network device and implementation method
InactiveCN112133994ASimple structureCompact structureWaveguide type devicesMiniaturizationVertical channel
The invention discloses a miniaturized high-power isolated synthetic network device and an implementation method. The method comprises the following steps: providing a lower cavity and an upper cavity; milling the opposite surfaces of the lower cavity and the upper cavity to form first vertical channel I-IV, first horizontal channel I-IV, a second vertical channel I, a second vertical channel II,a second horizontal channel I, a second horizontal channel II and a third vertical channel on the opposite surfaces, and arranging an E-arm spacer structure to form E-arm branch waveguide ports I-IV on one side of the lower cavity and the upper cavity in the length direction and an E-arm waveguide port on the other side; arranging the E-arm branch waveguide ports at equal intervals along a straight line; and assembling the lower cavity and the upper cavity to obtain the miniaturized high-power isolated synthetic network. The cavity is formed through one-time milling, network synthesis of fourports in the same plane is achieved through the channels, the E-arm spacer structures, the microstrip probes, the load resistors and the like, consistency of amplitude and phase of multiple branches and good isolation are guaranteed, the size is small, the frequency band is wide, and insertion loss is low.
Owner:SICHUAN SIAIPU ELECTRONICS TECH CO LTD
Dumbbell vented loudspeaker with treble compensation
ActiveCN104113800BSound field widthSmall distortionFrequency/directions obtaining arrangementsEngineeringWoofer
Owner:WUXI JIEFU ELECTROACOUSTIC
Virtual seven-channel strip sound box
InactiveCN106101939AImprove transient stabilitySimple structureLoudspeaker spatial/constructional arrangementsEngineeringLoudspeaker
The invention relates to a virtual seven-channel strip sound box. A left-end-arranged loudspeaker is arranged on the left end face of a strip box body; a right-end-arranged loudspeaker is mounted on the right end face of the strip box body; the left-end-arranged loudspeaker and the right-end-arranged loudspeaker are symmetrical to each other in a mirrored manner; a left-front-arranged loudspeaker, a middle-front-arranged loudspeaker and a right-front-arranged loudspeaker are mounted on the front lateral surface of the strip box body; the middle-front-arranged loudspeaker is positioned at the middle position of the strip box body in the long axis direction; the left-front-arranged loudspeaker and the right-front-arranged loudspeaker are symmetrically arranged at both left and right sides of the middle-front-arranged loudspeaker; a left-top-arranged loudspeaker and a right-top-arranged loudspeaker which are bilaterally symmetrical are mounted at the top of the strip box body; a projection position of the left-top-arranged loudspeaker on a plane is positioned between the left-front-arranged loudspeaker and the middle-front-arranged loudspeaker; and a projection position of the right-top-arranged loudspeaker on the plane is positioned between the middle-front-arranged loudspeaker and the right-front-arranged loudspeaker. The virtual seven-channel strip sound box disclosed by the invention can achieve a stereoscopic surrounding effect, improves transient stability of a sound system, and is low in distortion, good in low frequency and high in bearable power.
Owner:WUXI JIEFU ELECTROACOUSTIC
A horizontally polarized digital TV transmitting antenna array based on e-patches
ActiveCN105186109BImproving Impedance BandwidthIncrease the withstand powerAntenna arraysRadiating elements structural formsTerrestrial televisionStanding wave ratio
The invention relates to an E-type patch based horizontally-polarized digital television transmitting antenna array. The transmitting antenna array comprises a horizontally-polarized antenna unit, an equivalent-power-division in-phase feed network, a patch connector and an input connector; the horizontally-polarized antenna unit is formed by two laminated patch radiation units in a flushed in-phase arrangement; the laminated patch radiation unit comprises a rectangular parasitic patch top layer, a rectangular parasitic patch second layer, an E-type patch and a floor plate; the equivalent-power-division in-phase feed network is positioned between the E-type patch and the floor plate, and connected with the E-type patch through the patch connector; and an outer conductor of the input connector is fixed in the floor plate while the inner conductor of the input connector penetrates through the floor plate to be connected with the equivalent-power-division in-phase feed network. By adoption of the laminated structure and the E-type patch, the impendence bandwidth and the bearing power of the antenna are improved so as to satisfy the operating requirements of ground television broadcasting transmitting systems; and the E-type patch based horizontally-polarized digital television transmitting antenna array has the characteristics of wide working frequency bandwidth, high gain, low standing-wave ratio, high bearing power, simple process, convenient debugging and the like.
Owner:DALIAN MARITIME UNIVERSITY +1
High-fidelity combination speaker for curved screen
ActiveCN105072520BIncrease sound pressureSmall distortionFrequency/directions obtaining arrangementsTransducer casings/cabinets/supportsLarge screenEngineering
Owner:WUXI JIEFU ELECTROACOUSTIC
A kind of digital TV transmitting antenna based on e-type patch
ActiveCN105186130BImproving Impedance BandwidthIncrease the withstand powerRadiating elements structural formsAntennas earthing switches associationElectrical conductorStanding wave ratio
The invention relates to a digital television transmitting antenna based on an E-shaped patch. The digital television transmitting antenna comprises a formation plate, the E-shaped patch, a rectangular parasitic patch, an input connector and a retaining screw, wherein the rectangular parasitic patch, the E-shaped patch and the formation plate are orderly arranged in parallel from top to bottom to form a main structure of a stacked antenna; the E-shaped patch is provided with two symmetric rectangular gaps, and the length of a middle wing is smaller than that of two sides; an outer conductor of the input connector is fixed on the formation plate, and an inner conductor of the input connector penetrates through the formation plate and is connected to the E-shaped patch to feed; the rectangular parasitic patch at the upper layer is coupled by the E-shaped patch to feed. The digital television transmitting antenna based on the E-shaped patch provided by the invention satisfies the use requirement of a terrestrial television broadcasting transmitting system by adopting a multi-resonator technology to improve the impedance bandwidth and power handling of antennas; the invention has the characteristics of being wide in working band, high in gain, small in input standing-wave ratio, high in power handling, simple in processing, convenient in debugging and the like, and is applicable to a terrestrial television transmitting antenna system of a decimeter wave band.
Owner:LIAONING PUTIAN DIGITAL CO LTD
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