47results about How to "Guaranteed output efficiency" patented technology

The invention discloses a ratio-frequency power amplifier used for amplitude regulation, and an ultrahigh ratio-frequency identification tag. The amplifier comprises an input matching module, a first stage amplifying module, an interstage matching module, a second stage amplifying module and an output matching module which are connected sequentially. The input matching module is used for matching an input signal to the first stage amplifying module; the interstage matching module is used for matching the output of the first stage amplifying module to the input of the second stage amplifying module; the output matching module is used for matching the impedance of an antenna to the output impedance required by the second stage amplifying module; the second stage amplifying module is used for providing changeable gains and comprises a second inductor and at least two controllable power subcircuits which are connected with each other in parallel and then connected with the inductor in series. The invention also can realize relatively high energy utilization efficiency even under the condition of relatively small output power, thus ensuring high efficiency.

The invention discloses an arrangement-type floating running water power generation device. The arrangement-type floating running water power generation device comprises a floating frame and water wheel sets, transmission assemblies and a power generation assembly which are installed on the floating frame; the water wheel sets are connected with the transmission assemblies through transmission parts installed on water wheel shafts, and the transmission assemblies are connected with the power generation assembly; the water wheel sets are formed by installing multiple water wheels on the floating frame in the counter-flow direction in parallel at intervals; each water wheel at least comprises one water wheel shaft and impeller blades installed on the water wheel shaft. According to the arrangement-type floating running water power generation device, due to the resultant output of the multiple sets of the water wheels, the outputting efficiency and the outputting capacity are guaranteed; the water wheels which are arranged at intervals are beneficial for water flow driving; due to the fact that the multi-buoy design is adopted, the replacement and the maintenance are convenient; landing support legs are used for preventing the device from falling into water bottom sludge when the water level is low, a windshield effectively protects the normal work of the water wheels, the equipment operation is safer, the usage cannot influence the ecological environment, and the occupied space is small; power is generated by utilizing directional natural water flow, the investment is low, the gain is quick, and the economic benefit and social benefit are significant.

The invention discloses an AC stacked power amplifier for a wireless terminal. The power amplifier comprises an input matching single-ended to differential power supply network, an AC three-stack amplification network and an output matching differential to single-ended power supply network. According to the invention, the core architecture of the power amplifier adopts the AC three-stack amplification network, and has the characteristics of high power and high gain at low power supply voltage; and meanwhile, the good parasitic parameter inhibition of the differential amplifier in the microwavefrequency band is combined with the power synthesis characteristic of the transformer network, so the whole power amplifier obtains good high gain, high efficiency and high power output capability.

The invention discloses an alternating current stacked power amplifier. The power amplifier comprises an input matching single-ended-to-differential power supply network, a differential alternating-current stacked amplification network and an output matching differential-to-single-ended power supply network. According to the invention, the core architecture adopts the differential alternating current stacked amplification network, so that the characteristics of high power and high gain at low power supply voltage are realized; and meanwhile, the good parasitic parameter inhibition of the differential amplifier in the microwave frequency band is combined with the power synthesis characteristic of the transformer network, so that the whole power amplifier obtains good high gain, high efficiency and high power output capability.

The invention discloses a high-efficient power amplifier for Internet of Vehicles communication. The high-efficient power amplifier comprises an input single-ended to differential power distribution phase shift network, a first self-biased three-stacked amplification network, a second self-biased three-stacked amplification network, a third self-biased three-stacked amplification network, a fourthself-biased three-stacked amplification network and an output differential to single-ended power synthesis phase shift network. According to the invention, the core architecture adopts the characteristics of high power and high gain of a self-biased three-stack amplification network formed by heterojunction bipolar transistors in a radio frequency microwave band; and meanwhile, the good parasiticparameter inhibition of the differential amplifier in the microwave frequency band is combined with the good power back-off efficiency characteristic of the Doherty amplification structure, so that the whole power amplifier obtains good high gain, high back-off efficiency and high power output capability.

The invention provides a high-efficiency laser multi-pass amplification device. The device comprises two pumping source units, a gain medium and a seed light reflection mirror group. Each pumping source unit comprises a pumping source and a pumping light reflecting mirror. The seed light reflection mirror group comprises a first seed light reflecting mirror, a second seed light reflecting mirror and a third seed light reflecting mirror. The gain medium is cylindrical, an upper bottom surface of the gain medium is provided with a first film layer, a lower bottom surface is provided with a second film layer, and a side surface is provided with threads. The pumping source unit is located at an upper bottom surface side of the gain medium, and a reflecting surface of the pumping light reflecting mirror faces towards an upper bottom surface of the gain medium. The seed light reflecting mirror group is located on the lower bottom surface side of the gain medium. The first film layer reflectsseed light and transmits pump light, and the second film layer transmits the seed light and reflects the pump light. By increasing a frequency of the pump light penetrating through the gain medium, transverse parasitic oscillation can be greatly reduced while the output efficiency of an amplifier is kept.

The invention relates to the field of wetland water body environment purification equipment and particularly relates to an artificial ecological wetland self-purification floating platform. The platform comprises a device main body. A spiral swivel is movably mounted in the middle of the lower end of the device main body; a filtering cavity is formed in the lower end of an edge inside the device main body; a slag collecting device is fixedly mounted in the filtering cavity; a stirring device is movably mounted at the upper end in the device main body; a vent groove is formed in the stirring device; small stones with the same size are uniformly filled in the filtering cavity; a stirring plate is fixedly mounted at the lower end of the stirring device; and the stirring plate is provided withtwo layers in total so that when small stones are used for filtering polluted floating foam, the collected floating foam can downwards move into the filtering cavity through the stirring plate afterexcessive floating foam is collected, and when the stirring plate rotates in the filtering cavity, the small stones in the stirring plate can be driven to rub with one another so that the polluted floating foam attached to the outer sides of the stones is removed.

The invention provides a treatment technology for preparing combustion gas by using a biomass fixed-bed gasifier. The technology comprises the following steps: S1, carrying out pyrolysis gasificationon a biomass raw material in the biomass fixed-bed gasifier to prepare combustion gas, wherein the gasifier comprises a gasifier body and a grate which are longitudinally arranged, the grate is arranged at the bottom of the gasifier body, and the gasifier body is provided with a feeding pipeline; S2, carrying out purification dedusting on the combustion gas: introducing the combustion gas into a gas purifier, and carrying out purifying treatment to obtain tar and purified combustion gas; and S3, adding the tar in the gas purifier into the gasifier body, and reacting the tar again. The technology has the advantages of realization of thorough tar removal without reducing the output yield, great reduction of the pollution to the environment, and solving of the production cost problem.

The invention discloses a two-dimensional synthesis distribution type high-power linear broadband power amplifier. The power amplifier comprises a broadband input driving power division amplificationnetwork, a power supply bias network, a final-stage PMOS distribution amplification network, a final-stage NMOS distribution amplification network and a final-stage artificial transmission line. The core architecture of the power amplifier adopts the characteristics of high power and high gain of a high-gain three-pile stacked adaptive amplification network in a microwave band; and meanwhile, theultra-wideband frequency response characteristic and the simplified series voltage division structure of the two-dimensional synthesis distributed amplifier structure are utilized, so that the whole power amplifier obtains good wideband, high gain, high efficiency and high power output capability, and a power supply network is simple.

The invention relates to a fiber laser which comprises a pumping source, a resonant cavity, a cladding optical power stripper and an output device which are sequentially connected, the resonant cavity comprises a grating I, a gain fiber and a grating II, one end of the grating I is coupled with an output fiber of the pumping source, and the other end of the grating I is coupled with one end of the gain fiber; the other end of the gain fiber is coupled with one end of the grating II; wherein the grating I is a double-cladding grating, and the pumping source is used for outputting pumping light with a preset numerical aperture; or a mode field adapter is arranged between the pumping source and the resonant cavity and is used for converting the pumping light emitted by the pumping source into the pumping light with a preset numerical aperture, so that the numerical aperture of the pumping light entering the resonant cavity is configured to be less than or equal to half of the numerical aperture of the inner cladding of the grating I. The numerical aperture of the pump light entering the resonant cavity is configured to be smaller than or equal to half of the numerical aperture of the inner cladding of the grating I, so that the conversion efficiency of the optical fiber oscillator is improved.

The invention provides a voice coil motor and a fast reflector including the voice coil motor. The voice coil motor 110 comprises a fixed part and a movable part. The fixed part comprises magnets 104and an E-shaped soft magnetic material 105. The movable part comprises a coil 102. The magnets 104 are respectively fixed on the inner sides of the two ends of the E-shaped soft magnetic material 105,A coil is wound on the soft magnetic material and passes through the middle legs of the E-shaped soft magnetic material 105, and the middle legs are separated by a certain air gap. The two opposite magnets 104 of the fixed part have opposite magnetic polarities. The coil, the magnets and the soft magnetic material of the voice coil motor are all designed by the spherical surface, and the center of the spherical surface is consistent with the center of rotation of the fast reflector so that a larger rotation range can be obtained and the rotation angle range in two directions of 15 degrees ormore can be realized. Moreover, the air gap of the magnetic field is small so as to ensure the output efficiency of the voice coil motor and realize higher working bandwidth.

The invention discloses a temperature compensation cooling system based on quartz sand production. The system comprises a raw material feeding device, wherein the raw material feeding device comprises a feeding machine, quartz sand raw ore is conveyed through the feeding machine, the output end of the feeding machine is provided with a jaw crusher, the power output end of the jaw crusher is provided with a first cooling bed, and a cone crusher is arranged at the output end of the first cooling bed. The conveyor belt is arranged in the machine body, the motor is arranged on the lower portion of the conveyor belt, meanwhile, an air barrel is connected to the left side of the machine body, and the fixing frame is connected to the left side of the air barrel, so that air circulation in the machine body is accelerated, air is exhausted through a suction opening, raw materials are subjected to air cooling, meanwhile, the water tank is arranged at the bottom in the machine body, the connecting pipe is arranged at the output end of the water tank, and a cooling nozzle is arranged at the top of the connecting pipe, so that the raw materials can be cooled by water, the cooling efficiency is greatly improved, and the output efficiency of subsequent processing is ensured.

The invention discloses a rotary ultrasonic motor driven by multiple feet in a bending vibration mode. The rotary ultrasonic motor comprises a shell, a stator installed in the shell, a rotor capable of penetrating through the stator in a rotating mode and a driving power source installed outside the shell. The stator comprises a hollow multi-frame-shaped elastic body and a plurality of piezoelectric ceramic pieces; two piezoelectric ceramic pieces are arranged on each outer edge of the multi-frame-shaped elastic body, and driving feet extend out of the inner edges of the multi-frame-shaped elastic body respectively; the two piezoelectric ceramic pieces located on the same outer edge are located on the two sides of the driving feet on the corresponding inner edges; each piezoelectric ceramic piece is divided into two groups, the two groups of piezoelectric ceramic pieces are electrically connected with the corresponding output ends of the driving power supply respectively, the two piezoelectric ceramic pieces on the same outer edge are located in different groups respectively, and the two adjacent piezoelectric ceramic pieces are also located in different groups respectively. Compared with the prior art, the structure is simple, the driving control mode is simple, and the output efficiency of the rotary ultrasonic motor is improved; meanwhile, the processing difficulty of each part is low.

The invention discloses a multi-station spoke steel plate feeding system, and relates to the field of spoke machining. The multi-station spoke steel plate feeding system comprises a storage mechanism,a carrying mechanism, a positioning mechanism and a transfer mechanism, and the storage mechanism comprises a conveying chain, a first storage part and a second storage part. The automatic feeding ofspoke steel plates is realized by using the mutual cooperation of the first storage part, the second storage part and the conveying chain, and the first storage part and the second storage part are used for storing redundant spoke steel plates to guarantee uniform-speed feeding in subsequent procedures; and compared with traditional manual feeding, the labor intensity is reduced, and the output efficiency is guaranteed.

The invention relates to an AI-based intelligent calling cloud system, and the system comprises a receiving module which receives a call request of a user; the analysis module is connected with the receiving module and is used for analyzing the call request to obtain an analysis result; the storage module is used for analyzing the corresponding relation between the result and the solution; and the display module is used for obtaining the solution according to the analysis result and the corresponding relation and displaying the solution. The user portrait can be determined through the user request, and after the user request is analyzed, the matching between the solution and the call request is improved according to the user portrait and the analysis result, so that the solution displayed by using the display module can accurately match the call request, the actual request of the user is solved, and the user experience is improved. And the corresponding relationship between the analysis result and the solution is established in advance, so that the process of retrieval and search is reduced, the extraction time of the solution is greatly shortened, and the response time length based on the user call request is effectively reduced.

The invention discloses a permanent magnet motor rotor and a motor. The permanent magnet motor rotor comprises a rotor assembly, 2n (n=1, 2, 3...) built-in rectangular grooves are formed in the rotor assembly along the circumferential surface, the rectangular grooves are linear, magnetic isolation edges are arranged at the two ends of the outer sides of the rectangular grooves, magnetic isolation bridges are arranged at the positions of central symmetry lines of the rectangular grooves, and the number of the magnetic isolation bridges can be set to be zero when the linear speed Vtip of the motor rotor is low, otherwise, the number can be set to be one. According to the linear speed (mechanical centrifugal force of the outer surface of the rotor) of the rotor, the width of the magnetic isolation edges and the number and width of the magnetic isolation bridges are reasonably designed, so that the rotor assembly and the permanent magnets do not move left and right in the rectangular grooves, and the mechanical strength under the centrifugal force is guaranteed; therefore, the magnetic field effect and the output electrical performance of the motor are satisfied, the vibration resistance of the motor rotor is improved, and the rotating speed range of the motor is effectively expanded.