39 results about "Horn structure" patented technology

The invention relates to an integral ox horn electrode and a processing and using method thereof, and the integral ox horn electrode comprises a first reference frame which is used for positioning the Z-axis position of the ox horn electrode; the ox horn structure is fixedly connected with the first reference frame and is used for forming a glue inlet of a workpiece; the arc-shaped inner side of the ox horn structure is provided with an extension structure, a positioning hole is formed in the extension structure, an ejector pin is fixed in the positioning hole, and the ejector pin is perpendicular to the ox horn electrode and used for positioning the X-axis position and the Y-axis position of the ox horn electrode. A thimble is fixed in the positioning hole, is vertical to the ox horn electrode and is used for positioning the X-axis position and the Y-axis position of the ox horn electrode, positioning the Z-axis position of the ox horn electrode by using a first reference frame and disassembling the electrode into an integral ox horn electrode machined by a three-axis machine tool, so that the problems that the wire disassembling problem of a half ox horn electrode is adopted, the appearance of a product is influenced, the copper material is relatively small, the machining progress is quick and the production cost is low are solved. And the cost is low.

The utility model discloses a rapid rotary disc material receiving machine which comprises a machine frame, a rotary disc and a plurality of material receiving rings, and the machine frame is provided with a feeding hopper which is located above the material receiving rings and can be aligned with the material receiving rings in an up-and-down mode. A connecting piece is arranged between the material receiving ring and the rotating disc, the upper end of the connecting piece is connected with the material receiving ring, the lower end of the connecting piece is installed on the rotating disc through a detachable installation structure, the connecting piece is of a horn structure which is gradually expanded from top to bottom, and a photoelectric detection switch which can be lifted up and down to adjust the installation height is installed on the machine frame. The detection end of the photoelectric detection switch is located at the output end of the feeding hopper and can be within the range of the receiving ring, corresponding to the feeding hopper, of the rotating disc, a positioning proximity switch is installed on the portion, located outside the rotating disc, of the rack, and an induction rod matched with the positioning proximity switch in an induction mode is installed on the portion, located between the two connecting pieces, of the rotating disc. Compared with the prior art, the material receiving bag is not prone to inclining and falling down, and the material receiving bag is not prone to sliding down; and a photoelectric detection switch is arranged, so that the materials are not easy to fall on the ground.

The utility model provides a loudspeaker structure based on vibration sound transmission, which relates to the technical field of electroacoustic conversion devices, and comprises an upper cover assembly, a voice coil assembly, a magnetic circuit assembly and a lower cover assembly, and the surface of the upper cover assembly is provided with a heat dissipation hole I, a positioning hole and a fixing hole. According to the utility model, the magnetic circuit assembly and the voice coil assembly which are modularly designed are matched, an innovative structure that the voice coil is fixed and the magnetic circuit is movable is adopted, an electric signal is directly converted into mechanical vibration to be conducted to a human body, effective conversion from a sound signal to somatosensory vibration is realized, and the limitation that a traditional loudspeaker can only transmit sound waves through air is overcome; the heat dissipation holes and the ventilation grooves arranged in the upper and lower cover assemblies form convection heat dissipation channels, the heat conduction performance of the metal heat dissipation fins is matched, the heat dissipation problem during working of the vibration horn is effectively solved, long-time stable operation of equipment is guaranteed, meanwhile, the elastic supporting structure of the elastic pieces is utilized, vibration loss is reduced, and vibration conduction efficiency is improved.

The invention discloses a vehicle-mounted miniaturized directional strong sound device based on a double-membrane transducer, and the device employs the rear-mounted direct-drive layout of the double-membrane transducer, enables sound waves to directly enter a horn structure, avoids the path loss and energy attenuation caused by the multiple reflection of the sound waves in a conventional reflective structure, and remarkably improves the electroacoustic conversion efficiency. Under the same input power, higher sound pressure level output can be realized, through the synergistic effect of the three-section horn structure with the gradually changing section and the built-in phase cone, the form and the propagation phase of a sound wave wavefront are effectively controlled, sound energy is gradually converged in the propagation process, the sound beam diffusion angle is greatly compressed, the directivity and the propagation distance of sound are enhanced, and the sound quality is improved. In addition, by means of precise integration of the acoustic cavity and vertical installation of the circuit board, high-density layout is achieved in a limited space, and the device is suitable for a vehicle-mounted environment, supports multi-device cascading and matrix deployment, is easy and convenient to install and maintain and has outstanding engineering practicability and reliability.

A high-frequency bass T iron transmission structure coaxial loudspeaker comprises a high pitch unit which is driven by an inner magnetic neodymium iron boron magnetic circuit; a column center hole of the bass T iron is processed into a horn structure extending axially, and the geometric contour of the horn structure is an exponential curve and is used for guiding sound waves; the high-pitch pipe plug is made of an ABS plastic material and is coaxially nested and connected with the horn structure of the low-pitch T iron to form a continuous sound wave transmission channel; the short circuit ring is made of a high-conductivity copper material, is embedded in the magnetic gap of the bass magnetic circuit and is used for inhibiting harmonic distortion of the magnetic field; the coaxial loudspeaker box is novel in structure and more suitable for a loudspeaker box product for listening in small space and close distance, the high pitch unit and the low pitch unit of the loudspeaker are designed to be coaxial, so that the high pitch and the low pitch of a sounding point make sound on the same axis, the tone is more natural and smooth, the high pitch installation position of the loudspeaker box body is removed, and the size can be correspondingly designed to be small and compact.

The application discloses a dual-mode dual-circularly polarized antenna array, which comprises a dual-mode feed network and a radiation network stacked in order from bottom to top, the dual-mode feed network is used for transmitting electromagnetic waves in the form of TE10 mode and TEM mode input thereto to the radiation network, and the radiation network is used for radiating electromagnetic waves transmitted by the dual-mode feed network to free space, the dual-mode feed network is a hybrid feed network based on a hollow waveguide structure and an SISL structure, and the radiation network is a hybrid radiation network based on a partition structure and a stepped horn structure; the dual-mode dual-circularly polarized antenna array has the advantages of low profile, low sidelobe, simple structure and capability of being applied to a high-gain scene.

The utility model relates to the technical field of automobile horns, in particular to an automobile horn structure which comprises a supporting seat, a horn body and a buffering assembly, the horn body is installed on the supporting seat through the buffering assembly, the buffering assembly comprises a first hinged support, a hydraulic rod, a second hinged support, an installation cylinder frame, a spring and a fixing component, the first hinged support is fixedly installed in the supporting seat, and the second hinged support is fixedly installed in the supporting seat. One end of the hydraulic rod is rotationally connected with the first hinged support, the other end of the hydraulic rod is rotationally connected with the second hinged support, the mounting cylinder frame is fixedly connected with the second hinged support and located in the supporting base, the horn body is detachably mounted on the mounting cylinder frame, the spring sleeves the outer side of the hydraulic rod, and the fixing component is connected to the mounting cylinder frame and the horn body. The problems that when an automobile runs, vibration and impact generated by bumpy road surfaces can be transmitted to the horn, but the horn in the prior art is not provided with a buffering structure, so that connecting parts of all parts of the horn are prone to loosening, abrasion of the parts is aggravated, and the service life of the horn is shortened are solved.

The application provides a phototherapy device for treating brain-related diseases. The phototherapy device comprises a gas supply assembly, a head-wearing assembly and a first horn structure. The gas supply assembly comprises at least a gas supply pipe group. The head-wearing assembly comprises a shell and a light-emitting piece, the shell has a gas cavity in fluid communication with the gas supply pipe group, the gas supply pipe group is used for providing gas to the gas cavity, and the gas in the gas cavity is used for blowing to the head. The first horn structure is arranged at the gas outlet of the gas supply pipe group, and is used for diffusing the gas into the gas cavity via the first horn structure. The opening size of the first horn structure increases along the flow direction of the gas, and the cross-sectional area of the opening of the first horn structure is smaller than the cross-sectional area of the gas cavity. The phototherapy device can reduce the noise generated when the high-speed fluid transmitted from the gas supply pipe group enters the gas cavity with a relatively large cross-sectional area by arranging the first horn structure.

The utility model provides a cavel structure of a dune buggy, which comprises a cavel body, a front suspension upper connecting part, a front suspension lower connecting part, a steering rod connecting part and a brake component connecting part, and each connecting part and the cavel body are integrally formed, so that the assembly efficiency is increased, and the whole structure has higher strength and stability and is convenient to assemble and disassemble. Therefore, the vehicle has high stability in the running process.

The utility model relates to the technical field of thin-type horns, in particular to a thin-type horn structure, which comprises a basin frame, a vibrating diaphragm and a dustproof cap covering the top of the vibrating diaphragm, the periphery of the vibrating diaphragm is annularly attached to the top of the basin frame, a first boss annularly protrudes from the bottom of the dustproof cap, and a second boss annularly protrudes from the top of the vibrating diaphragm. The first boss and the second boss are concentrically arranged and buckled with each other, so that the dustproof cap can be quickly positioned and installed at the top of the vibrating diaphragm, the dustproof cap and the vibrating diaphragm are kept concentric after installation, and harmonic distortion caused by vibrating diaphragm deformation due to uneven stress when the vibrating diaphragm vibrates caused by eccentricity of the dustproof cap is avoided. And the assembly efficiency between the dustproof cap and the vibrating diaphragm can be improved.

The utility model discloses a sound box horn structure and a sound box using the same, the sound box horn structure comprises a horn upper cover and a horn lower cover, the horn lower cover is provided with two grooves, and the two grooves are in mirror symmetry with a Y-axis direction as a symmetry axis; the width of the groove is gradually increased in the sound wave conveying direction. The groove comprises a first arc-shaped surface, a second arc-shaped surface and a vertical surface which are connected in sequence; the vertical surface is close to the middle of the horn lower cover, and the first arc-shaped surface is close to the outer side of the horn lower cover; the first arc-shaped surface is bent outwards, and the second arc-shaped surface is bent downwards; the horn upper cover detachably covers the top of the horn lower cover, and the horn upper cover is matched with the first arc-shaped surface, the second arc-shaped surface and the vertical surface to form a sound wave channel. The sound box horn structure is formed by combining the horn upper cover and the horn lower cover, and sound waves are effectively transmitted outwards from the loudspeaker unit through the two sound wave channels, so that the sound transmission is more stable, the directivity of the sound waves is enhanced, the sound waves are transmitted more accurately, and the intermediate frequency efficiency of the sound box is improved.

The application provides a double-cavity double-structure double-vibration-membrane high-frequency horn structure and relates to the field of acoustic devices. The double-cavity double-structure double-vibration-membrane high-frequency horn structure comprises a frame, a U cup, a first magnetic circuit assembly, a second magnetic circuit assembly, a first voice coil, a second voice coil, a first vibration membrane and a second vibration membrane. The U cup is arranged in the inner cavity of the frame, the U cup comprises a base plate part and a ring part which are connected to each other, the base plate part and the ring part enclose a front cavity, the first magnetic circuit assembly is arranged in the middle part of the front cavity, the second magnetic circuit assembly is arranged at the side part of the front cavity, the first voice coil is arranged between the first magnetic circuit assembly and the second magnetic circuit assembly, the first vibration membrane is connected to the first voice coil, the first voice coil is suspended in the front cavity, and the U cup is provided with a ring-shaped slot hole. The high-frequency horn structure has high electric energy and sound energy conversion efficiency, and has high overall output and power.

The utility model relates to a radio frequency coaxial load structure, and provides an adjustable high-precision equal-phase load structure in order to solve the problem that the existing radio frequency coaxial load is inconsistent in electrical length, and the adjustable high-precision equal-phase load structure comprises an outer shell, an insulating medium, an inner conductor, a load resistance tuning assembly and a rear cover, the rear end of the inner conductor extension section is provided with a blind hole, and an elastic body is arranged in the inner conductor extension section; the load resistor tuning assembly comprises a tuning bushing and a load resistor, the tuning bushing is of a horn structure, an elastic clamping seat is arranged on a through hole in the small end of the tuning bushing, the front end of the load resistor penetrates through the blind hole and then is connected with the inner conductor through an elastic body, and the rear end of the load resistor penetrates through the through hole in the small end of the tuning bushing and is connected with the elastic clamping seat; a tuning external thread is arranged on the circumferential face of the outer side of the tuning lining, a tuning internal thread matched with the tuning external thread is arranged on the inner wall of the outer shell, and the phase relation among the load resistor, the elastic body and the outer shell can be adjusted through the elastic clamping base.

The utility model relates to the technical field of ultrasonic waves, and discloses a directive horn structure, at least two directive plates are rotatably connected with an external connection structure, the directive plates are arranged side by side, each directive plate comprises a sound wave part, the sound wave part is arranged on one side, far away from the external connection structure, of the directive plate, and the sound wave part is suitable for emitting ultrasonic waves. The sound wave direction is suitable for being perpendicular to the plane of the side, away from the external connecting structure, of the pointing plate, and ultrasonic waves emitted by the sound wave parts of every two adjacent pointing plates form double-slit interference; and the direction adjusting plate is simultaneously connected with the at least two pointing plates and is suitable for synchronously driving the at least two pointing plates to rotate relative to the external connecting structure. Through a double-slit interference ultrasonic structure, directional regulation and control of sound waves are achieved, at least two pointing plates arranged side by side are adopted to form an interference array, a sound wave part configured on each pointing plate can emit ultrasonic waves perpendicular to the plate surface, and it is ensured that adjacent sound wave sources form a stable double-slit interference field.

The invention provides a high-gain millimeter wave waveguide horn phased-array antenna unit based on an HTCC technology, and the antenna unit comprises an HTCC dielectric substrate which is formed by stacking a plurality of dielectric layers in the vertical direction, and each dielectric layer is internally provided with a metalized through hole array which is arranged along a specific path; the waveguide cavity is enclosed by waveguide walls formed by metalized through hole arrays in the multiple dielectric layers; the feed structure comprises a coaxial line fed from the bottom of the antenna unit, an inner conductor of the coaxial line extends into the waveguide cavity and is connected with a metal patch, and the metal patch is electrically connected with the waveguide wall of the waveguide cavity; and the multi-stage stepped horn structure is arranged in the HTCC dielectric substrate, is stacked above the radiation port of the waveguide cavity, and comprises at least two stages of stepped cavities with waveguide walls formed by metalized through hole arrays. The three-dimensional waveguide horn structure is planarized and multi-layered by using the HTCC technology, the embedded waveguide cavity and multi-step horn structure design is realized by using the HTCC technology, and the advantages of high gain and easy planar integration are achieved.

The invention discloses a horn structure and a sound equipment product, and relates to the technical field of electroacoustic products, and the horn structure comprises a basic part which is provided with a basic horn, the basic horn is provided with a first throat part and a first mouth part, and the first throat part is used for connecting a loudspeaker unit; the extension type piece is provided with an extension horn, the extension horn is provided with a second throat part and a second mouth part, the second throat part is in sealed butt joint with the first mouth part, and sound waves emitted by the loudspeaker unit are radiated to the outside from the second mouth part; and the connecting assembly is connected with the basic part and the extension part, and the basic part and the extension part are detachably connected through the connecting assembly.

The utility model discloses a kind of horn structure of non-directional loudspeaker, it is related to speaker design field, including horn body and loudspeaker box body, horn body is fixedly installed in loudspeaker box body;The front side of loudspeaker box body is integrally formed with multiple sound holes, horn body is covered and installed in the front side of sound hole;Four ends of horn body are formed with mounting hole, four ends in sound hole are slidably fitted and installed with sliding column, the middle portion of sliding column front end is formed with bolt hole, horn body is screwed through mounting hole and is screwed and locked in bolt hole;Compared with prior art, the utility model can manually fine tune the position of four ends of horn body, realize the fine tuning of sound amplification effect, can be applicable to different application scenarios, different sound amplification effects can be realized by the way of slight deformation of horn body, make sound more clear and transparent, realize non-directional loudspeaker adjustment.

This utility model discloses an optimized structure for a dual-circular magnet single-sided vibration-damping speaker, including a diaphragm, voice coil, frame, and magnetic circuit. The magnetic circuit includes a magnetic cup, a central magnet, and a central pole plate, as well as dovetail-shaped first and second vibration-damping springs. The magnetic cup is a flat plate structure with both its front and rear faces being planar. The first and second vibration-damping springs are symmetrically arranged on the front face of the magnetic cup and are positioned and assembled with frame positioning posts on the frame through spring positioning holes on the first and second vibration-damping springs. The magnetic circuit also includes an annular magnet and an annular pole plate. The central magnet and the annular magnet are both located at the center of the front face of the magnetic cup, and the annular magnet is coaxially arranged around the central magnet. The central pole plate is coaxially arranged on the front face of the central magnet, and the annular pole plate is coaxially arranged on the front face of the annular magnet. This speaker structure, with its split vibration-damping springs, is less prone to deformation, reduces the amplitude of the box shell, and improves loudness.

The invention relates to a horn loading slot antenna, belongs to the technical field of slot antennas, and solves the technical problem of high cost of an existing millimeter wave antenna. The horn loading slot antenna comprises a metal radiation layer and a horn structure, and the metal radiation layer is provided with a radiation slot and a choke slot. The horn structure is formed by a plurality of plate bodies in a surrounding mode and installed on the metal radiation layer, the radiation gap is located in the horn structure, and the choke gap is located outside the horn structure. The horn loading slot antenna can reduce loss and improve efficiency through the horn structure formed by the multiple plate bodies, has the advantages of being low in standing wave, high in bandwidth, simple in structure and the like, achieves the function of power division feed of a traditional waveguide slot antenna, reduces cost, and meanwhile, the multiple plate bodies formed by the horn structure are simple in structure and lower in processing cost.

The utility model discloses a low-flow-rate high-efficiency direct-current power generation device, which belongs to a low-flow-rate power generation device in the technical field of power generation equipment, and adopts the technical scheme that the low-flow-rate high-efficiency direct-current power generation device is provided with a support frame and comprises a duct pipe fixedly arranged between two horn units and used for communicating the two horn units; the axial flow turbine blades are rotationally arranged in the duct pipe; the disc type generator is fixedly arranged on the supporting frame, and the disc type generator is connected with a rotating main shaft of the axial flow turbine blade through a belt assembly; a blade type winding coil assembly and a rotor magnetic strip assembly are arranged in the disc generator; the utility model provides a low-flow-velocity high-efficiency direct-current power generation device, which adopts a double-horn structure to increase the flow velocity of fluid and increase the rotating speed of blades, so that the efficiency of a power generator is improved, and high-efficiency power generation in the scene of low wind speed and liquid fluid without water head fall is realized.

The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker structure and a loudspeaker. The loudspeaker structure comprises a base, a sound amplifying seat and a vibrating diaphragm, the sound amplifying seat covers the base, so that a sound outlet cavity is defined by the sound amplifying seat and the base, a plurality of sound inlets are formed in one side, facing the base, of the sound amplifying seat, and the sound inlets are communicated with the sound cavity; the plurality of sound inlets are arranged around the center of the sound amplification seat; the vibrating diaphragm is arranged on one side, facing the base, of the sound amplification seat and comprises an annular folding part, and the annular folding part is positioned in the sound cavity and is arranged in front of the plurality of sound inlets in a blocking manner; and the annular folding part is used for being matched with the moving coil unit to vibrate. The loudspeaker structure can improve the propagation accuracy of sound waves in the loudspeaker structure, and effectively improves the sound amplification effect.

The utility model discloses a plane horn structure which comprises a plastic basin stand, the inner side of the plastic basin stand is provided with a step, the step, the bottom of the plastic basin stand and the side wall of the plastic basin stand form an accommodating cavity used for wrapping the edge of a lower outer magnet, and the center of the lower outer magnet is provided with a lower inner magnet. The objective of the utility model is to solve the problem that a conventional loudspeaker PCB falls off and is noiseless. The plane type upper and lower magnets, the voice coil and the diaphragm are adopted, the height space is saved, the integrated embedded bonding pad is welded through injection molding, a PCB is omitted, voice coil wire welding is facilitated, the length of the voice coil wire is reduced, the soundless risk is avoided, the lower outer magnet is wrapped by the inner positioning of the plastic basin frame, the lower outer magnet does not need to be bonded through glue, and the manufacturing cost is reduced. And the lower outer magnet is also prevented from falling off.

The utility model discloses an architectural acoustics optimizing device which comprises a wallboard, a silencing inner core is arranged in the wallboard, silencing cotton is arranged in the middle of the silencing inner core, cellular boards are arranged on the two sides of the silencing cotton, the inner diameter of each cellular board is of a gradually-shrunk structure, and therefore a trumpet-shaped structure is formed. A silencing cavity is formed between the honeycomb plate and the silencing cotton, and a first connecting plate and a second connecting plate are arranged on the two sides of the wall plate correspondingly. The honeycomb plates are arranged on the two sides of the silencing cotton, the inner diameters of the honeycomb plates are gradually reduced, the honeycomb plates form the horn-shaped structure, the silencing cavity is formed between the honeycomb plates and the silencing cotton, the honeycomb plates of the horn-shaped structure are beneficial to guiding sound waves into the silencing cavity, and the sound waves are reflected and dissipated in the silencing cavity. And a sound attenuation cavity is formed between the honeycomb plate and the sound attenuation cotton, so that the propagation path and the dissipation space of sound waves are further increased, and the sound insulation effect is improved.

The utility model discloses a double-sided loudspeaker structure, which comprises an upper basin stand and a lower basin stand, the upper basin stand is arranged above the lower basin stand, a main magnet is arranged between the upper basin stand and the lower basin stand, the left side and the right side of the main magnet are respectively provided with an auxiliary magnet, the top and the bottom of the main magnet are respectively provided with a main washer, and the main washer is provided with an auxiliary washer. Auxiliary washers are respectively arranged at the top and the bottom of the auxiliary magnet, an upper voice coil is arranged on the outer side of the top of the auxiliary magnet, a lower voice coil is arranged on the outer side of the bottom of the auxiliary magnet, an upper vibrating diaphragm is arranged above the upper voice coil, and the edge of the upper vibrating diaphragm is fixed on the upper frame. The number of parts of the double-sided loudspeaker structure is small, the number of magnets is reduced, assembling procedures are correspondingly reduced, production cost is reduced, the height of the double-sided loudspeaker structure can be lower than that of a conventional loudspeaker, and the requirement for light and thin modern consumer goods is met.

The utility model belongs to the technical field of power equipment, and provides a personal backup protection rope throwing, hanging and removing device which comprises a first shell and a second shell connected with the first shell. The first shell is connected with the flexible rod, and a loudspeaker structure is detachably arranged on the second shell; the horn structure comprises a skirt edge and a bolt connecting hole formed in one end of the skirt edge, the skirt edge of the horn structure is detachably connected with the second shell through the bolt connecting hole, and when the skirt edge of the horn structure is deformed to the degree needing to be replaced, only the skirt edge needs to be replaced; and the first shell, the second shell and other parts on the shell do not need to be integrally replaced, so that the use cost is reduced.

The utility model provides a coaxial horn structure which comprises a basin stand, a vibration diaphragm is arranged on the basin stand, the basin stand is connected with a horn assembly with a large upper part and a small lower part, and the middle part of the vibration diaphragm is provided with an installation channel through which the lower part of the horn assembly passes. The horn assembly comprises a horn shell which is vertically through and has a large upper part and a small lower part, a conical core piece arranged in the horn shell and a sound guide plate arranged at the top of the horn shell, the bottom of the horn shell extends out of the bottom of the basin frame, the bottom of the conical core piece is provided with a conical bottom end sound guide part, the bottom end sound guide part extends out of the bottom of the horn shell, and the bottom end sound guide part is provided with a sound guide hole. And the lower side of the basin frame is connected with a sounding element which covers the bottom of the horn shell. The coaxial horn structure provided by the utility model aims to overcome the defects in the prior art and provides a coaxial horn structure in which high and low sound sounding points are highly overlapped.

The invention relates to the technical field of kitchen appliances, in particular to an air door device for enhancing air blowing. The air door device for enhancing air blowing comprises a fan assembly, a nozzle assembly and an adjusting plate. The fan assembly comprises a blower nozzle; the adjusting plate is arranged between the fan assembly and the nozzle assembly; the adjusting plate is provided with an adjusting channel right opposite to the blower nozzle. The adjusting channel is of a horn mouth structure capable of gathering wind and guiding flow so that primary air from the blower nozzle can be injected to the injection pipe. In this way, rapid and convenient primary air conditioning can be achieved.

The invention discloses a broadband planar terahertz horn antenna based on folded substrate integrated waveguide feed. The broadband planar terahertz horn antenna comprises a dielectric substrate, a folded substrate integrated waveguide transmission line structure, a dipole antenna unit and a dielectric horn structure, wherein the dipole antenna unit and the dielectric horn structure are connected with the folded substrate integrated waveguide transmission line structure. According to the antenna, the dipole antenna unit is directly excited through the folded substrate integrated waveguide transmission line structure, reflection-free efficient excitation of terahertz signals of the folded substrate integrated waveguide transmission line is guaranteed, efficient convergence and directional radiation of terahertz electromagnetic wave radiation energy are achieved through the dielectric horn structure, and meanwhile the mechanical stability of the antenna is improved. By replacing traditional metal via holes with structures such as wrinkled branches and the like, the processing difficulty and production cost of the antenna are reduced, the antenna can realize high-efficiency transmission of terahertz electromagnetic waves in a broadband range, the technical problems that the traditional SIW technology is difficult to process and cannot meet the terahertz frequency band requirement are solved, and the antenna has high practicability. And core support is provided for practicability of the terahertz system.

The invention provides a noise reduction partition wall for a rail locomotive, the noise reduction partition wall comprises a bottom plate, a panel and a honeycomb interlayer arranged between the bottom plate and the panel, the honeycomb interlayer comprises a plurality of honeycomb noise reduction units, each honeycomb noise reduction unit comprises an interlayer pipe, a first horn structure arranged at the first end of the interlayer pipe and a second horn structure arranged at the second end of the interlayer pipe, the first horn structure extends from the first end in the axial direction of the interlayer pipe, and the first horn structure is provided with a first opening; the orthographic projection of the first end on the bottom plate is within the orthographic projection of the first opening on the bottom plate, the second horn structure extends from the second end in the axial direction of the interlayer pipe, the second horn structure is provided with a second opening, and the orthographic projection of the second end on the bottom plate is within the orthographic projection of the second opening on the bottom plate; holes are formed in the surface of each honeycomb noise reduction unit, and the diameter of each hole is smaller than 10 mm.

The application provides a large-frequency-ratio wide dual-band 5G antenna, comprising a main antenna, a folding probe and a feeding substrate; the main antenna comprises a bottom surface, a rectangular slot is arranged at the center of the bottom surface, a WR-34 waveguide is arranged in the rectangular slot, an open structure composed of two inclined plate electric dipoles is arranged on the bottom surface, and planar magnetic dipoles are respectively arranged on the upper edges of the two inclined plate electric dipoles; the folding probe is two, and is respectively arranged on the two sides of the inclined plate electric dipole, and a square horn structure is formed by the inclined plate electric dipole and the folding probe; the feeding substrate is arranged on the upper surface of the bottom surface, and comprises a dielectric plate and a microstrip line printed on the dielectric plate. The application improves the gain of the millimeter wave band antenna while maintaining high isolation of two frequency bands, and the branch designed on the basis of the main probe limits the wave leaked from the side of the inclined horn antenna in the radiation area, thereby improving the gain of the inclined horn antenna.