204results about How to "Reduce resonance" patented technology

The invention relates to the technical field of welding industrial robots, and discloses a damping device for an arm of a welding industrial robot, which comprises a base, a mechanical base, a mechanical arm and an end effector, and a second spring in a damping cylinder at the top end of the damping device is matched with a damping column I of the mechanical base; arm weight, dynamic load and ground vibration borne by the base are effectively dealt with, it is avoided that vibration is transmitted to the mechanical arm to affect welding precision, a second spring releases energy through deformation conversion during vibration, the mechanical base and the arm are subjected to shock absorption, and when shock absorption is not needed, the mechanical base and the arm can be tightly connected through a top bolt and other components and absorb energy through friction rubber. The fixing rod is taken down when the connecting position of the end effector does not need damping, the first spring conducts damping on the connecting position of the mechanical arm and the rotating connecting block, the situation that the welding position is not accurate due to track deviation of the mechanical arm is avoided, the fixing rod is used for limiting and fixing when damping is not needed, and a friction plate on a connecting column can absorb vibration impact; efficient and accurate welding operation and stable operation of equipment are guaranteed.

The invention discloses a flexible support for mountainous region photovoltaic construction, and relates to the technical field of photovoltaic construction, the flexible support comprises a plurality of groups of fixing piles poured on a mountainous region, steel nooses are arranged among the plurality of groups of fixing piles, photovoltaic fixing plates are laid on the steel nooses, and bearing cables are further arranged among the plurality of groups of fixing piles. A square pyramid is arranged on the lower surface of the photovoltaic fixing plate, the bottom end of the square pyramid is arranged on the bearing cable, a windproof cable is longitudinally arranged below the bearing cable and penetrates through the square pyramid, windproof piles poured on a mountain land are arranged at the two ends of the windproof cable, and damping mechanisms are arranged in the windproof piles. The bracket is provided with the windproof cable and the damping mechanism, and the energy of up-down vibration of the windproof cable is absorbed through mechanical movement in strong wind weather, so that the amplitude of up-down vibration of the steel noose and the bearing cable can be reduced, the stability of the steel noose and the bearing cable is improved, and the wind-resistant effect is good.

The utility model discloses a side-mounted garbage collection and transportation manipulator which comprises a grabbing mechanism, a lifting mechanism, a transverse position adjusting mechanism, a telescopic mechanism, a visual auxiliary operation mechanism and a control mechanism. The grabbing mechanism is provided with a single-finger clamping jaw and a double-finger clamping jaw which can be adjusted independently or simultaneously, and the single-finger clamping jaw is located in a gap in the middle of the double-finger clamping jaw. A sensor is arranged on the tail end clamping jaw; the lifting mechanism drives the grabbing mechanism and the transverse position adjusting mechanism to ascend and descend, and overturning and dumping of the dustbin are achieved. The transverse position adjusting mechanism is used for adjusting the position of the grabbing mechanism in the transverse direction; the telescopic mechanism is used for driving the supporting and lifting mechanism to stretch forwards or retract backwards, and the visual auxiliary operating mechanism obtains an image at the grabbing mechanism and conveys the image to the control mechanism; and the control mechanism is provided with a controller for controlling other parts to work. The grabbing mechanism is controlled to be opened and closed more accurately, and the garbage can is prevented from being shrunken by clamping or falling off in the grabbing process; and the adjustment in the lifting or horizontal direction is more accurate.

The utility model belongs to the technical field of containers, and discloses a corner fitting damping mechanism of a container, which comprises a damping base internally provided with a damping component; the placement platform is connected to the top of the cushioning assembly of the cushioning base, and a through groove is formed in the center of the placement platform; the adjusting assembly penetrates through the through groove of the placement platform and is rotatably connected to the center of the placement platform, and an inner hexagonal butt joint hole is formed in the bottom of the adjusting assembly; the locking assembly is arranged at the top of the adjusting assembly in a follow-up manner; and the locking assembly is driven to rotate by butting an inner hexagonal butting hole in the bottom of the adjusting assembly through a wrench. According to the utility model, the target container is fixed in a rotary buckling manner, the structure is simple, and the effect is stable; the damping effect is improved through the mode that the four corners and the center are matched for damping, the shaking risk is reduced, resonance possibly generated by internal equipment is reduced, and therefore damping material packaging of the equipment can be reduced, and the storage space is enlarged.

The invention discloses a carbon dioxide cold and heat combined supply heat regenerator, and particularly relates to the technical field of carbon dioxide heat pumps, the carbon dioxide cold and heat combined supply heat regenerator comprises a high-pressure coil pipe and a low-pressure coil pipe which extend in a wave shape and are arranged in a staggered mode, the high-pressure coil pipe and the low-pressure coil pipe are crossed, and a cushioning assembly is installed at the staggered position of the high-pressure coil pipe and the low-pressure coil pipe; the high-pressure coil pipe and the low-pressure coil pipe are sleeved with a sleeve, an interlayer is attached to the inner wall of the sleeve, four rubber filling strips with right-angle fan-shaped sections are installed in the sleeve, the arc-shaped outer walls of the rubber filling strips are attached to the inner wall of the interlayer, and a cross-shaped pipeline channel is formed among the four rubber filling strips. The coil pipes which are arranged in a wave-shaped staggered mode are adopted, the cushioning effect is embedded in the coil pipe fitting, and the outer portion of the coil pipe fitting is wrapped with the sleeve, the interlayer, the rubber filling strip and other components, so that pipeline resonance in the equipment working process is effectively reduced, and the resonance noise and the blow-by phenomenon are reduced.

The invention provides an ultra-high-speed electric connector which comprises an insulating body, the insulating body is provided with a lengthwise slot, a plurality of terminal slots are formed in lengthwise side walls on the two sides of the slot respectively, and a fool-proof part is arranged in the slot and used for dividing the insulating body into a power supply and low-speed signal area and a high-speed signal area which are located on the two sides of the fool-proof part; the plurality of terminals comprise differential signal terminals distributed in the high-speed signal area and other terminals distributed in the high-speed signal area and the power supply and low-speed signal area, every two differential signal terminals are adjacent, and two sides of every two adjacent differential signal terminals are respectively provided with a grounding terminal; every two adjacent differential signal terminals and two grounding terminals located on the two sides of the two differential signal terminals form a terminal module, and the two differential signal terminals and the two grounding terminals of each terminal module and an insulating block inserted into the insulating body are formed in an embedded mode. The ultra-high-speed electric connector can enable signal transmission to be better and more stable.

The utility model discloses a sound absorption structure of an earphone shell, and belongs to the field of earphones. An earphone shell sound-absorbing structure comprises a head-mounted ring, connecting ends are fixed to the ends of the two sides of the head-mounted ring, earmuffs are fixed to the inner sides of the connecting ends, a sound-absorbing component is bonded to one side of each earmuff through quick-drying glue, an earphone body is bonded to one side of each sound-absorbing component through quick-drying glue, and the earphone body is fixed to the head-mounted ring through the quick-drying glue. According to the utility model, the sound absorbing cotton is arranged in the hush pipe, and the hush pipe is connected with the sound absorbing group through the components such as the sleeve, the reserved opening and the cavity shell, so that sound can enter the hush pipe and is absorbed by the sound absorbing cotton, and the sound absorbing cotton can effectively absorb redundant sound and lingering sound; the transmission and reflection of noise are reduced, the silencing effect is achieved, and meanwhile the problems of sound quality loss and noise interference are solved.

The utility model discloses a super-linear bidirectional sound output loudspeaker, comprising a first vibration system formed by bonding a first frame body, a first voice coil, a first voice diaphragm and a first FPC soft board, a second vibration system formed by bonding a second frame body, a second voice coil, a second voice diaphragm and a second FPC soft board, and the two vibration systems are bonded and face opposite directions; the first FPC soft board and the second FPC soft board are provided with bonding pad points, the bonding pad points are located above the corresponding voice coil lead wires, the first central magnet, the second central magnet, the first washer and the second washer are connected to the two surfaces of the U iron to form an assembly, and the U iron is connected with the side magnet. The side magnets are connected to the inner sides of the two frame bodies and located on the two sides of the assembly to form a center magnetic circuit system. The beneficial effects of the utility model are that the FPC soft board is directly welded with the voice coil lead, so that the voice coil lead is prevented from being bent, and the power resistance of the loudspeaker is improved.

The embodiment of the invention relates to the technical field of connectors, and particularly discloses a grounding terminal, a connector and electronic equipment, the grounding terminal comprises a first contact part, a first elastic arm part, a first holding part and a second contact part, one end part of the first contact part is used for being connected to a butt joint piece, the first elastic arm part is connected to one end of the first contact part, and the second elastic arm part is used for being connected to the butt joint piece. The first elastic arm part is provided with a first contact part and a second contact part, the first holding part is connected to one end, far away from the first contact part, of the first elastic arm part, the first holding part is used for being fixed on an insulation body and is used for being connected to a conductive piece, the second contact part is connected to the other end of the first contact part, and the second contact part is used for being connected to the conductive piece. Through the mode, the end part of the other end of the first contact part is used for being connected to the conductive piece through the second contact part, and stubs on the first contact part are eliminated to form an effective signal return path, so that crosstalk and resonance are reduced.

The invention provides a circuit breaker fault early warning method and system based on digital twinning, and relates to the technical field of power equipment detection.The circuit breaker fault early warning method comprises the steps that electrical parameters, mechanical data and real-time environment temperature data of a circuit breaker are collected, and a circuit breaker electrical equivalent circuit model and a mechanical model after temperature correction are established; the accuracy of the circuit model is verified through loss power, and the accuracy of the mechanical model is verified through inherent frequency. The simulation calculation results of the circuit model and the mechanical model are combined, three state variables of current, voltage and frequency are detected and compared with a dynamic threshold value to generate a fault judgment index, and the state variables having faults are judged by synthesizing the value of the fault judgment index. The method effectively improves the monitoring precision and response speed of the circuit breaker, and reduces the fault risk.

The invention belongs to the field of ship damping equipment, and discloses a ship engine damping system which comprises an electric balancer, a damping device and a damping device. A mechanical system is arranged in the shell and comprises two balance blocks which are the same in rotating speed and opposite in rotating direction, and vertical torque generated in the rotating process of the balance blocks is transmitted to the shell, so that ship body resonance is compensated. And the control system is used for monitoring the operation of the host and executing motor control by receiving user instructions and parameters so as to control the speed and the phase of a balance block in the mechanical system. The two balance blocks are arranged in the ship body, connected with the main engine and rotate in the opposite directions, ship body resonance is counteracted through vertical torque generated by the balance blocks, vibration generated by the ship body is reduced, the stability of the ship body is improved, the possibility that the ship body is damaged and equipment on the ship is damaged is reduced, and therefore the service life of the ship body is prolonged.

The utility model discloses a shock-absorbing anti-jumping host base which comprises a host base body (2) composed of a base lower support (7) and a base upper support (5), a rope hitch plate (4) is arranged on the middle rear side of the upper end of the host base body (2), and shock-absorbing anti-jumping mechanisms which are symmetrically arranged relative to the rope hitch plate (4) are arranged on the front side of the rope hitch plate (4). The damping and anti-jumping mechanism comprises a mounting plate (10) connected with the host base body (2), a host damping pad (3) is arranged on the mounting plate (10), and an anti-jumping plate (1) is arranged on the host damping pad (3). The utility model has the advantages that the installation is convenient, the noise during the operation of the host can be reduced, and the wire jumping condition is avoided.

A double-sided vibration-damping high-power loudspeaker relates to the technical field of loudspeakers, and is characterized in that an upper vibration system and a lower vibration system are arranged on the opposite sides of an upper bracket and a lower bracket in opposite directions, and a magnetic circuit system shared by the upper vibration system and the lower vibration system is arranged on the opposite sides of the upper bracket and the lower bracket; the magnetic circuit system comprises a U-shaped cup, a center magnet fixedly arranged in the U-shaped cup and a plurality of edge magnets arranged on the peripheral side of the top face of the lower support, the edge magnets are symmetrically arranged around the center magnet, and a plurality of containing grooves used for containing the edge magnets are formed in the top face of the lower support. The side magnets are correspondingly and fixedly arranged on the corresponding containing grooves, the horizontal edge plate of the U-shaped cup is horizontally erected on the side magnets, and the effect that one horn achieves two horns is achieved. The two loudspeakers counteract with each other in the sound box to reduce the resonance of the sound box, so that the sound box can be widely applied to devices such as a pen / tablet computer / multimedia device and the like.

The application discloses a kind of carbon ceramic brake pad for grinding carbon ceramic brake disc, belong to brake pad technical field, solve the poor heat dissipation performance of existing ceramic brake pad, insufficient connection strength, leading to the problem of poor friction performance, it includes carbon ceramic lining plate and the carbon ceramic friction surface installed on carbon ceramic lining plate, multiple mortise grooves are set on the upper surface of carbon ceramic lining plate, multiple tenon heads matched with mortise groove are set on the lower surface of carbon ceramic friction surface, tenon head is embedded into mortise groove and forms mortise and tenon structure, connects carbon ceramic lining plate and carbon ceramic friction surface, ear plate is set on the circumference of carbon ceramic lining plate, and mounting hole is formed in ear plate;In the application, the friction coefficient is adjusted by designing ceramic phase composition and density of carbon ceramic friction surface and carbon ceramic lining plate, and carbon ceramic lining plate and carbon ceramic friction surface are connected by RMI process and mortise and tenon structure to improve the mechanical properties of connecting place, ensure braking safety, reduce thermal stress generated in braking process, so as to improve the friction performance, effectively guarantee braking effect, and prolong service life.

An ultra-wideband end-fire antenna with a common aperture embedded in a metal carrier includes a metal cavity with a coaxial cable compartment on one side. A radiator module is connected to the bottom of the metal cavity via a radiator fixing slot. The radiator module includes a common aperture antenna substrate. A low-frequency radiator is printed on the side of the common aperture antenna substrate closer to the coaxial cable compartment, and a high-frequency radiator is printed on the side farther from the coaxial cable compartment. This invention utilizes a dual-band antenna in a common aperture design to enhance the channel capacity and anti-fading capability of the communication system. At the same time, by achieving the antenna's carrier conformal characteristics, high isolation, and miniaturization, it enriches the antenna's application scenarios and improves the overall performance of the communication system.

The present invention belongs to the field of audio playback, and in particular to a speaker base assembly and a speaker, wherein the speaker base assembly comprises: a base, which is made of a low-density material; a power amplifier device, which is provided with at least one and connected to the base; a counterweight, which is made of a material with high density and high thermal conductivity, connected to the base, and in contact with at least one of the power amplifier devices. The speaker base assembly of the present invention removes a radiator, thereby reducing the overall volume of the speaker base assembly.

The invention discloses a multi-array base station antenna, which comprises a reflecting plate, and a plurality of low-frequency antenna arrays are arranged on the front surface of the reflecting plate; the low-frequency antenna array comprises a plurality of low-frequency oscillators; the plurality of low-frequency antenna arrays are arranged in parallel; a side wall is arranged between the adjacent low-frequency antenna arrays; the extension direction of the side wall is consistent with the extension direction of the reflecting plate; the side wall is composed of a plurality of side wall plates, and a gap is formed between every two adjacent side wall plates. The extension direction of the side wall plate is consistent with the extension direction of the reflecting plate; and the length size of the side wall plate is equal to one half of the working frequency wavelength of the low-frequency oscillator. Through the arrangement of the side wall plate, the problem of mutual interference between same-frequency oscillators in the low-frequency oscillator array is solved.

The present invention discloses a base station, an antenna and a transition structure of a microstrip line and a coaxial cable thereof. The transition structure comprises a microstrip line, a coaxial cable and a fixing seat. The core of the coaxial cable can be electrically connected to the microstrip line. The fixing seat is provided with a first through hole for the coaxial cable to pass through and a first connecting portion for electrically connecting to a reflector, and the fixing seat can be coupled and connected with the outer conductor of the coaxial cable. The transition structure of the microstrip line and the coaxial cable is simple in structure and easy to assemble; thus, the antenna using the transition structure of the microstrip line and the coaxial cable is simple in structure and easy to assemble; thus, the base station using the antenna is easy to assemble, and the assembly efficiency is improved.

The invention provides a power assembly and a vehicle with the power assembly, the power assembly comprises an integrated shell and a stator rotating mechanism, the integrated shell is internally provided with a containing cavity, the containing cavity is internally provided with a motor shaft, a first motor unit and a second motor unit, the first motor unit and the second motor unit are both arranged on the motor shaft, and the stator rotating mechanism is arranged in the containing cavity. The first motor unit and the second motor unit are arranged in the axial direction of the motor shaft in a spaced mode. The stator rotating mechanism is connected with a stator of the second motor unit, and the stator rotating mechanism is rotatably arranged relative to the side wall of the containing cavity so as to adjust the stator angle of the second motor unit. By designing the stator rotating mechanism, the circumferential angle of the stator of the second motor unit is adjusted, and noise and resonance of the motor are reduced.

This utility model discloses a corrugated pipe with a noise reduction structure, relating to the field of corrugated pipe technology. It includes a corrugated pipe and a flow guide. The flow guide is disposed inside one end of the corrugated pipe. The outer wall of the flow guide gradually widens from one end to its opposite end, with the narrow end facing the end of the corrugated pipe without the flow guide. The flow guide is coaxially arranged with the corrugated pipe, and a gap is left between them for airflow. This utility model, by providing a flow guide inside the output end of the corrugated pipe, allows turbulent airflow within the corrugated pipe to impact the flow guide when it reaches the output end. This compresses the airflow, making its velocity uniform, and the airflow then exits through the gap between the flow guide and the inner wall of the corrugated pipe, reducing resonance noise. Furthermore, the gradual widening of the outer wall of the flow guide from one end to its opposite end provides flexible guidance, further improving the uniformity of airflow and thus reducing resonance noise.

The present application discloses a screw compressor, comprising: a housing; a pair of rotors; an internal exhaust channel, wherein the internal exhaust channel fluid connects the rotor exhaust outlet and the exhaust volume; and a plurality of mufflers, wherein the plurality of mufflers are arranged on at least a portion of the defining wall of the internal exhaust channel, wherein the plurality of mufflers include a plurality of resonant mufflers. The resonant muffler of the present application can prevent the structure of the resonant muffler from being destroyed by the exhaust pressure pulse, and at the same time can discharge the accumulated liquid in the muffler structure in real time, thereby ensuring the stability of the muffler effect, and therefore can be arranged in an internal exhaust channel where the exhaust pressure pulsation energy is very high. Moreover, the resonant muffler of the present application has an acoustic superstructure, and not only each resonant muffler has a good muffler effect and occupies a small space, but also a plurality of resonant mufflers with different predetermined natural frequencies can eliminate the noise in the internal exhaust channel within a wide frequency range.

The utility model relates to the technical field of noise reduction devices, and discloses a transformer noise reduction device which comprises a connecting seat and a base, a cushioning assembly is arranged on the lower portion of the connecting seat, a pulling assembly is arranged on the lower portion of the connecting seat, an inner soundproof box is fixedly connected to the top of the connecting seat, and an outer soundproof box is fixedly connected to the top of the connecting seat. A sound insulation door is slidably connected to one side of the outer sound insulation box, a handle is fixedly connected to the top of the sound insulation door, and sound insulation cotton is fixedly connected into the inner sound insulation box. According to the utility model, the noise level generated by the transformer can be effectively reduced through the noise reduction mechanism, the influence of the transformer on the surrounding environment can be improved through reducing the noise level, and the vibration and impact caused by the operation of the transformer can be effectively relieved or absorbed through the cushioning mechanism; the vibration is prevented from being transmitted to surrounding structures and foundations through equipment, and fatigue and damage of the equipment are relieved.

This utility model discloses an air conditioner with a noise reduction device, comprising an outdoor unit; a bracket for fixing a main frame to a wall or base, and a secondary frame for supporting the outdoor unit; and a noise reduction mechanism including a shock absorber disposed between the secondary frame and the outdoor unit, a steel cable connecting the two secondary frames, and a counterweight suspended from the steel cable. This utility model provides an air conditioner with a noise reduction device. When the outdoor unit is operating, the vibration it generates is reduced by the shock absorber, thereby reducing the vibration of the secondary frame. When the secondary frame vibrates, the vibration is transmitted to the counterweight through the steel cable, causing the counterweight to sway, thus counteracting the vibration and further reducing it, thereby reducing resonance and lessening noise caused by vibration.

The application discloses a keyboard key and a computer keyboard. The keyboard key comprises a key cap body, the key cap body has a cavity with an opening facing downward, and an upper surface of the key cap body forms a knocking surface; a hard structure comprises a base and a sleeve downward protruding from the base, the sleeve has a sleeve hole with an opening facing downward; a soft structure comprises a base table and a connecting column downward protruding from the base table, an upper surface of the base table is connected to a bottom of the cavity, the base is fixedly connected with the base table, a main body part of the connecting column is embedded in the sleeve hole, and a cross connecting hole is arranged in the connecting column, and the cross connecting hole is connected with a cross connecting column of a keyboard shaft body. The keyboard key and the computer keyboard have the advantages that when each key is pressed, the hand feeling tends to be consistent, the knocking bottom sound, the resonance sound and the key cap cavity sound generated when rebounding are consistent.

The utility model relates to the technical field of water pump installation, and discloses a water pump installation structure and a water pump thereof. A support plate; the adjusting assembly comprises a vertical shaft, a limiting ring, thrust protrusions and limiting grooves, the vertical shaft is fixedly connected with the supporting plate and rotationally connected with the bottom plate, the limiting grooves are formed in the top of the bottom plate, the thrust protrusions are fixedly arranged at the bottom of the limiting ring and can be clamped into the limiting grooves to lock the position of the vertical shaft, and the limiting ring is elastically connected with the vertical shaft. The limiting ring is pushed upwards, the limiting ring slides along the vertical shaft, the protruding block on the inner ring of the vertical shaft slides along the vertical groove, then the thrust protrusion is separated from the limiting groove, the position of the supporting plate can be adjusted by rotating the supporting plate, the position of the water pump water opening fixedly formed in the top of the supporting plate can be adjusted, then butt joint of the water pump water opening and a pipeline is facilitated, adjustability is high, and practicability is high. And the installation adaptation degree is higher.

The utility model provides digital sound equipment with a high-tone-quality loudspeaker structure, which comprises a sound equipment main body, a first sealing cavity arranged on the sound equipment main body, a second sealing cavity arranged on the sound equipment main body, an electric control assembly arranged on the first sealing cavity, and a loudspeaker arranged on the second sealing cavity, the sound guide cylinder which extends towards the direction close to the loudspeaker and is connected with the outside of the second sealing cavity is arranged on the second sealing cavity, so that the loudspeaker of the sound equipment and other electric control elements are arranged in the independent sealing cavities respectively, resonance between sound played by the loudspeaker and the electric control elements is reduced, and the sound guide cylinder is matched to improve the playing effect of the sound equipment; the sound box has the advantages of being good in sound quality, high in fidelity, low in improvement cost and convenient to popularize and implement.

The invention discloses a suspended ceiling adjusting structure which comprises a telescopic movable rod, a damping telescopic rod is arranged at the bottom of the movable rod, a spring is arranged on the outer side of the damping telescopic rod, a main keel is connected to the bottom of the damping telescopic rod, multiple sets of threaded holes are formed in the top of the main keel, and a mounting frame and a fixing frame are arranged on the outer side of the main keel. The top of the mounting frame and the top of the fixing frame are connected to threaded holes through short bolts to be in limiting connection, an auxiliary keel is arranged in the mounting frame, a positioning support is mounted at the bottom of the auxiliary keel, clamping mechanisms are arranged on the two sides of the fixing frame, and a punching cellular board is clamped in the positioning support. And meanwhile, resonance noise transmission is reduced.

The invention discloses a diesel DCT power assembly resonance optimization method and system, relates to the technical field of power assembly simulation testing, and aims to solve the problem that the engine speed lasts for a long time in a resonance speed interval of a dual-mass flywheel due to insufficient combustion in a cylinder and low output power of a diesel engine under a low-temperature cold start working condition. The starting strategy of the diesel engine is optimized, so that the power source of the diesel DCT power assembly overcomes the resistance source of the diesel DCT power assembly, and then the starting rotating speed of the diesel engine can quickly pass through the resonance interval of the dual-mass flywheel; by the adoption of the resonance optimization method, resonance generated by a power system with the diesel engine and the DCT gearbox matched with each other during low-temperature cold start can be effectively reduced, and the engine rotating speed can be prevented from being kept within the resonance rotating speed interval of the dual-mass flywheel all the time when the engine is started. And the service life of main parts in the power assembly can be prolonged.

This invention discloses a miniaturized four-channel combining module based on the TE20 mode, belonging to the field of millimeter-wave power combining technology. It includes a layered upper cavity, a mezzanine, a lower cavity, and an RF unit. The RF unit comprises a TE10-TE20 waveguide distributor, two amplification branches, and a TE20-TE10 waveguide combiner. Each amplification branch includes a TE20 mode filter, a waveguide-microstrip transition, a pair of amplifier chips, and a microstrip-waveguide transition connected sequentially. The TE10-TE20 waveguide distributor and the TE20 mode filter are disposed in the upper and lower cavities. The waveguide-microstrip transition, the pair of amplifier chips, and the microstrip-waveguide transition are disposed on opposite sides of the mezzanine. The TE20-TE10 waveguide combiner is disposed in the upper cavity, the mezzanine, and the lower cavity. This invention utilizes a high-isolation waveguide distributor / combiner to improve branch isolation, shorten the combining path, and has a compact overall structure with advantages such as wide bandwidth, high isolation, high combining efficiency, and miniaturization.

This utility model discloses a horizontal line array speaker, relating to the field of speaker technology. It includes a cabinet, inside which a first speaker and a second speaker are installed. The first speaker propagates sound outwards along a first outlet of the cabinet, and the second speaker propagates sound outwards along a second outlet. The sound waves emitted by the first speaker can cancel out the low-frequency sound waves from the side of the second speaker facing away from the second outlet, causing the low-frequency sound waves to primarily propagate towards the second outlet. This increases the concentration of sound wave propagation, effectively reducing the impact of ambient noise and thus increasing the sound wave energy on the side closer to the audience. The cabinet is equipped with a waveguide located on the side facing away from the first outlet. The waveguide can convert spherical waves into plane waves, which helps improve the directivity of the sound waves and saves space, allowing for a smaller cabinet size. The second outlet is equipped with a phase plug, which reduces the secondary reflection path of the sound waves, reduces bass looseness and resonance problems, makes the low frequencies tighter and more powerful, and enhances the sense of rhythm.