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96results about How to "Reduce footprint size" patented technology

Hydrocarbon separation process

The present invention provides for a process of separating hydrocarbons such as short chain paraffins and olefins from non-hydrocarbon gases using short-cycle time concentration swing adsorption processes. The hydrocarbons are adsorbed from the gaseous stream on highly siliceous nanoporous materials, e.g., such as of aluminum-deficient faujasite-type zeolites, by way of a pressure, vacuum or temperature swing adsorption, then desorbed from the adsorbent in the presence of steam. Optionally, the steam is desorbed from the adsorbent through the use of air or inert gas or a recycle of the waste gas effluent. The invention also provides for a new method of preparing novel shapes such as beads and monolithic structures of the highly sileceous nanoporous materials.
Owner:BOC GRP INC

Monolithic widely-tunable coherent receiver

Various embodiments of a coherent receiver including a widely tunable local oscillator laser are described herein. In some embodiments, the coherent receiver can be integrated with waveguides, optical splitters and detectors to form a monolithic optical hetero / homodyne receiver. In some embodiments, the coherent receiver can demodulate the full phase information in two polarizations of a received optical signal over a range of optical wavelengths.
Owner:FREEDOM PHOTONICS LLC

Active oil-gas separator

The invention discloses an active oil-gas separator which comprises a shell. An oil-gas separation mechanism is arranged between the upper middle portion of a center shaft in the shell and the shell,and a driving mechanism used for driving the center shaft to rotate is arranged between the bottom of the center shaft and the shell. An air inlet used for introducing fleeing gas of an internal combustion engine is formed in the top of the shell, a pure gas outlet is formed in the position, at the bottom of the oil-gas separation mechanism, of the side wall of the shell, and an oil return openingused for lubricating oil to flow out is formed in the position, below the driving mechanism, of the side wall of the shell. The oil-gas separation mechanism comprises a separation disc upper end cover, a separation disc lower end cover and all middle separation discs which are connected between the separation disc upper end cover and the separation disc lower end cover and are arranged on the center shaft. The active oil-gas separator begins to work automatically after a motor vehicle is ignited and stops working automatically after the flameout, electric control is not needed in the work process, efficient oil-gas separation can be conducted on engine fleeing gas, losses of lubricating oil are reduced, long-term stable running can be achieved without maintenance, and very high market value is achieved.
Owner:PINGYUAN FILTER

Crib capable of being rapidly folded

The invention relates to a crib. A crib frame is a foldable. A first locking mechanism and a second locking mechanism on the two sides of a front supporting rod are unlocked through a first connecting and unlocking mechanism, the first connecting and unlocking mechanism is moved downwards, the front supporting rod is folded in half by adopting the first connecting and unlocking mechanism as the center, a left supporting foot stool and a right supporting foot stool at the two ends get close to each other, folding of the crib is completed, the folded front supporting rod and a rear support are located on the inner sides of the left supporting foot stool and the right supporting foot stool, the folded left supporting foot stool and the right supporting foot stool get closer, the folded occupied space is further reduced, transportation and storage are convenient, and the crib is simple in folding structure, convenient to operate and easy to use.
Owner:GUANGDONG ROADMATE GRP

Zero-discharging technology in reclaimed water reuse

The invention discloses a zero-discharging technology in reclaimed water reuse. A biochemical water-discharging tank which is used for accommodating biochemically discharged water is arranged. An ultrafiltration device, a roll-type reverse osmosis membrane device, a super reverse osmosis membrane device and an evaporation device are successively arranged on the biochemical water-discharging tank.A clean water tank is connected to the roll-type reverse osmosis membrane device, the super reverse osmosis membrane device and the evaporation device. The invention discloses a super reverse osmosismembrane device which includes a circular tube pressure bearing outer shell, a metal sealing piece, a flange disk, a fluid reversing disk, a sealed circular tube pressure bearing inner shell, a waterdistributer, an inner pulling rod, a supporting and guiding disk, a membrane piece, a liquid inlet pipe and a liquid outlet pipe. The invention provides the zero-discharging technology in reclaimed water reuse, which can reduce energy consumption of sewage treatment and further reduce investment required in the sewage treatment. By means of the technology, a sewage treatment effect is improved anda zero-discharging requirement is achieved.
Owner:CHENGDU MEIFUTE MEMBRANE TECHNOLOGY CO LTD

Knuckle-jointed lance for internal cleaning and inspection of tubulars

InactiveUS20140090674A1Reduce footprint requireReduce footprint sizeLathesDrilling rodsSacroiliac jointKnuckle
A knuckle jointed lance (KJL) including a plurality of KJL segments concatenated into a string thereof. A tool head is connected to one end of the lance. Each KJL segment has a hollow body, open at both ends, with a generally trapezoidal profile. The string further comprises a plurality of articulated joints connecting neighboring KJL segments together at about a mid-point between the top side and base side of their respective trapezoidal profiles. Embodiments of the articulated joints include lug pins on the end of one of a neighboring pair of KJL segments connected to corresponding lug holes on the end of the other of the neighboring pair.
Owner:THOMAS ENG SOLUTIONS & CONSULTING L L C

Electronic equipment and signal amplification method

The embodiment of the invention discloses electronic equipment. The electronic equipment comprises a radio frequency circuit arranged between an antenna and a transceiver, the radio frequency circuitcomprises an emission path comprising a signal amplification branch used for amplifying an emission signal emitted by the transceiver according to a signal amplification direction and then transmitting the emission signal to the antenna, and a receiving path comprising the signal amplification branch, wherein the signal amplification branch is used for amplifying the received signal received by the antenna according to the signal amplification direction and then transmitting the amplified signal to the transceiver; and the signal amplification branch circuit; wherein the signal amplification direction of the signal amplification branch is determined by an amplifier located in the signal amplification branch. The embodiment of the invention further discloses a signal amplification method.
Owner:LENOVO (BEIJING) CO LTD

Novel treatment technology of high-concentration industrial wastewater

The invention discloses a novel treatment technology of high-concentration industrial wastewater. A pretreatment unit, a membrane unit with a SUPER membrane element function and an evaporation unit are used in the novel treatment technology. The invention discloses a reverse osmosis membrane device which comprises a round pipe bearing outer shell, a metal seal sheet, a flange plate, a fluid reversing plate, a seal type round pipe bearing inner shell, a water distributor, an inner pull rod, a supporting flow guide plate, a membrane, a liquid inlet pipe and a liquid outlet pipe. According to the novel treatment technology of high-concentration industrial wastewater, a system is high in reliability and integrity, high in automation level, small in occupied area and relatively high in pollutant removal rate, and economic benefits of enterprises are well increased.
Owner:CHENGDU MEIFUTE MEMBRANE TECHNOLOGY CO LTD

Received signal strength indicator with digital output and low power consumption functions

InactiveCN103095279ASimplify the electrical architectureReduce the size of the footprintLogic circuit coupling/interface arrangementsCapacitanceElectricity
The invention discloses a received signal strength indicator with digital output and low power consumption functions. The indicator is suitable for in-phase / quadrature (I / Q) four-way output circuit system and is characterized in that a four-way-to-two-way amplifier is arranged on an input side, a part of an output two-way signal directly accesses to a quantizer, the other part of the output two-way signal accesses to the other quantizer through the other amplitude amplifier, and outputs of the two quantizers access to a logical combiner together to form a four-bit digital signal output; and each quantizer comprises a double-input and double-output differentiator, five comparators and load capacitance charge-discharge circuits connected with the comparators respectively, and an ungrounded terminal of each load capacitance forms the outputs of the quantizers. With the application of the design scheme of the invention, the electricity framework of the received signal strength indicator (RSSI) is greatly simplified, the area occupied by a chip is reduced, simultaneously the energy consumption and cost required by achieving functions are reduced, and further the technical guarantee is provided for the application design of the I / Q four-way output circuit system.
Owner:苏州磐启微电子有限公司

Automatic online feeding and welding equipment and method

The invention discloses automatic online feeding and welding equipment. The automatic online feeding and welding equipment comprises a workbench and a controller, wherein a push-and-pull mechanism, a lifting mechanism and a four-axis module mechanism are sequentially arranged on the workbench in the length direction of the workbench, a tin soldering mechanism is connected on the four-axis module mechanism, a blocking mechanism is arranged at the position, corresponding to the joint of an assembly line and the workbench, of the workbench, and a bearing tool for bearing a PCB is arranged on the assembly line. An automatic online feeding and welding method comprises the following steps of S1, conveying the bearing tool to the workbench; S2, stopping the bearing tool moving continuously; S3, soldering tin; and S4, feeding the bearing tool into the assembly line. According to the automatic online feeding and welding equipment and method, high-precision positioning is achieved, the whole operation process is fully automatic, manual intervention is not needed, the workload of operators and the required cost are reduced, the occupied space ratio of the equipment is reduced, and the product quality and the working efficiency are improved; and the automatic online feeding and welding equipment not only can meet the requirements of a current production assembly line, but also can adapt to different welding procedures without changing the assembly line equipment.
Owner:福建宏泰智能工业互联网有限公司

High-efficiency self-control horizontal rotary-electrode electro-catalysis oxidation dirt removal device

The invention discloses a high-efficiency self-control horizontal rotary-electrode electro-catalysis oxidation dirt removal device. The high-efficiency self-control horizontal rotary-electrode electro-catalysis oxidation dirt removal device comprises a cylinder; an end cover is arranged at each of the two ends of the cylinder for sealing; a central rotating shaft is arranged in the centre of the cylinder; an electrode group is arranged on the central rotating shaft in a sleeving manner; the two ends of the central rotating shaft penetrate out of the end covers at the two ends; one end of the central rotating shaft is connected with a shaft seat at the tail end, and the other end of the central rotating shaft is connected with a driving device; the cylinder is placed horizontally; the electrode group comprises a plurality of electrode plates which are arranged in parallel on the central rotating shaft in a sleeving manner at intervals; the electrode plates consist of sacrificial anode plates and cathode plates; the anode plates and the cathode plates are arranged alternately; the sacrificial anode plates and the cathode plates are disc plates with equal diameter; the central rotating shaft is arranged in central holes of the anode plates in a sleeving manner and is fixedly connected with the central holes of the anode plates in a contact manner; a plurality of convex bumps are arranged on the edge of each sacrificial anode plate and around the centre of a circle; a connecting hole is formed in each convex bump; the convex bumps on each sacrificial anode plates correspond to one another; an anode energizing shaft penetrates through each connecting hole; the two ends of each anode energizing shaft are connected with the end covers at the two ends of the cylinder; the central rotating shaft is arranged in the central holes of the sacrificial anode plates in the sleeving manner.
Owner:YIXING LINGTAI ENVIRONMENTAL PROTECTION

Seventy-two-slot six-layer flat copper wire mixed winding structure and motor using winding structure

The object of the present invention is to disclose a seventy-two-slot six-layer flat copper wire mixed winding structure and a motor using the winding structure. The seventy-two-slot six-layer flat copper wire mixed winding structure includes three phases of mixed winding structure distributed in at least six winding layers. Each phase of the mixed winding structure is composed of two winding branches. The winding branches are each formed by a plurality of winding elements evenly distributed in each of the winding layers, and adjacent winding elements are alternately distributed in the same slot or adjacent slots. Compared with the prior art, the winding structure can easily realize automatic wire insertion and convenient connection, simplifies a wire connection technique, greatly simplifies the structural layout of the profiled wire at a winding end portion, and reduces the space size occupied by the end portion of the winding structure so as to achieve the object of the present invention.
Owner:ZHEJIANG LOONGSON ELECTRIC DRIVE TECH CO LTD

Mine supporting equipment for geotechnical engineering

The invention discloses mine supporting equipment for geotechnical engineering, and belongs to supporting equipment. The mine supporting equipment for geotechnical engineering comprises a base; and the middle of the upper end of the base is fixedly connected with a fixed column, and the upper end of the fixed column is connected with a supporting column in a sleeved mode. By arranging the base anduniversal wheels, the mine supporting equipment is conveniently moved in a mine and moved to certain special positions for supporting advantageously; a pushing mechanism drives a moving mechanism tomove towards the two sides of a worktable, thus a first supporting rod drives a movable block to move downwards, the supporting column moves downwards, the movable block drives a second supporting rodto retract while moving downwards, and the second supporting rod retracts, so that a second arc-shaped supporting plate also retracts for folding, the size of the space occupied by the whole equipment is greatly decreased, and the equipment is conveniently placed in the mine; and through arrangement of an air purification device, the air quality in the mine is improved, and the situation that people breathe in harmful air, and consequently bodies are influenced is prevented.
Owner:肖兴魁

Terminal device

Embodiments of the invention relate to a terminal device, including a bracelet and headset. The bracelet comprises a U-shaped bracelet body, as well as a first bracelet end and a second bracelet end that are disposed at the two ends of the bracelet body. The earphone comprises a headset body. The headset body comprises a first headset end and a second headset end. The first bracelet end is fixedly connected to the first headset end through a rotating structure. When the headset is used, the second headset end rotates around the rotating structure regarded as the center of the ball. While the headset is used, the bracelet is used as an ear hook. When the headset is not used, the headset and the bracelet jointly form an enclosed annular body. The terminal device is small in occupied space and portable.
Owner:HUAWEI TECH CO LTD

System startup test information display method and related device

The invention discloses a system startup test information display method, and the method comprises the following steps: when a system is subjected to a startup test, enabling a BIOS to send an obtained startup test code to a PCH through an SPI; judging whether the PCH is connected with external visual equipment or not; if so, sending the startup test code to the external visual equipment through the PCH, so as to display the startup test code through the external visual equipment according to a visual path. When the external visual equipment is connected, display is directly carried out through the external visual equipment instead of an added display lamp, so the display efficiency of the startup test information is improved, and the cost and the occupied space are reduced. The inventionfurther discloses a system startup test information display device, a server and a computer readable storage medium, which have the above beneficial effects.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD

Foldable objective image stitching grating pulse compressor and stitching status diagnosis system

ActiveCN103365029AIncrease the equivalent rasterSave spaceDiffraction gratingsMountingsImage stitchingLight source
The invention relates to a foldable objective image stitching grating pulse compressor and a stitching status diagnosis system. The foldable objective image stitching grating pulse compressor comprises four groups of stitching gratings and two foldable reflectors, wherein the first groups of stitching gratings and the second group of stitching gratings are parallel, the third group of stitching gratings and the fourth group of stitching gratings are parallel, and two pairs of parallel stitching gratings are symmetrically distributed up and down. The stitching status diagnosis system comprises two monitoring light sources and two observation devices, wherein each monitoring light source emits one beam of light, which is divided into two monitoring light beams, and four monitoring light beams are respectively received by the corresponding observation devices after passing through four stitching positions and form diffractive focal spots. The size of the compressor is reduced, the stitching deviation of the stitching gratings is reduced and the stitching status diagnosis system is simplified.
Owner:中国工程物理研究院上海激光等离子体研究所

Thrust bearing device with compact structure

The invention relates to the technical field of thrust bearings of main shaft systems of submersible vehicles, and particularly discloses a thrust bearing device with a compact structure. A forward running end and a reverse running end adopt an asymmetric design form, an oil inlet and outlet pipe is arranged on a transition surface, and a supporting bearing bush and a forward running lantern ring adopt a conformal design; reverse running thrust blocks, forward running thrust blocks and the bush surface of the supporting bearing bush are made of a large-ratio shaft bush material, and the shell is of a high-strength steel plate welding structure, so that the overall weight, occupied size and the like of the thrust bearing can be greatly reduced, the mounting space of equipment on a submersible vehicle is saved, and the occupation of the overall weight resource of the submersible vehicle is reduced; and besides, vibration reduction cylinders are closely arranged behind an even number of the forward running thrust blocks which are evenly distributed in the circumferential direction, the vibration reduction cylinders are communicated through hydraulic pipelines and are connected with an energy accumulator structure to form a communicating device, so that the forward running thrust blocks in the circumferential direction are equal in stress, the stress can be balanced, and the situation that a single thrust block is excessively stressed and burnt due to installation and machining errors is avoided.
Owner:CHINA SHIP DEV & DESIGN CENT

Installation package downloading method and device, electronic equipment and storage medium

The invention relates to an installation package downloading method and device, electronic equipment and a storage medium. The method comprises the following steps: independently packaging a third-party library in an installation package to generate a dynamic link file; inserting the path of the generated dynamic link file into an HTML template file in an installation package, so that the dynamiclink file is loaded when a page of the HTML template file is started; calculating an MD5 value of the function module file by adopting an MD5 algorithm for the function module file in the installationpackage; receiving installation package downloading request information sent by the client; obtaining the installation package and a dynamic link file related to the installation package according tothe received installation package downloading request information, and compiling the obtained dynamic link file to reduce the size of the dynamic link file; and packaging the reduced dynamic link file and the installation package, and sending the packaged dynamic link file and installation package to the client. According to the method and the device, the problems of overlong consumed time and overlarge resource consumption when the installation package is downloaded can be solved.
Owner:CHINA PING AN LIFE INSURANCE CO LTD

Laundry rack with drying function

The invention discloses a laundry rack with a drying function. The laundry rack comprises a rack body, a hot air generating device and a rack arm, the rack body is provided with a cold air inlet, an air supply channel and a hot air outlet, wherein the cold air inlet, the air supply channel and the hot air outlet are communicated with each other; the hot air outlet is opposite to aired clothes, and the rack body is further provided with an air outlet communicated with a ventilation channel; the hot air generating device is arranged on the rack body, and is located in the air supply channel; the rack arm is rotatably arranged on the rack body, and is provided with an air inlet, an air guide channel and a bottom air outlet hole, wherein the air inlet, the air guide channel and the bottom air outlet hole are mutually communicated with each other; when the laundry rack with the drying function is in use, the rack arm rotates relative to the rack body to make the air outlet relatively communicated with the air inlet, and the bottom air outlet hole is opposite to the aired clothes. When the laundry rack with the drying function is in use, cold air is converted into hot air heated by the hot air generating device, then the hot air is blown to the wet clothes through the hot air outlet and the bottom air outlet hole, thus by making the hot air full and uniform contact with the clothes, moisture on the clothes is quickly evaporated, and the effect of quick drying is achieved.
Owner:GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1

Device for simultaneously demonstrating light diffraction effect and mechanical effect

The invention relates to a device for simultaneously demonstrating a light diffraction effect and a mechanical effect. The device comprises an optical tweezers system composed of a laser, a first thinlens, a second thin lens, a first 45-degree full-reflecting mirror, a second 45-degree all-reflecting mirror, a dichroic mirror, a microscope objective, a sample cell, and an objective table along the optical path, and a microscopic imaging system composed of an illumination light source, an objective table, a sample cell, a microscope objective lens and a dichroic mirror along an optical path. After the laser beam passes through the objective lens, the size of the light outlet of the objective lens is small, the light beam is diffracted, and a diffraction ring light spot can be observed on the sample cell glass slide. In addition, due to the fact that the numerical aperture of the objective lens is very high, each laser diffraction bright strip is subjected to strong convergence throughthe objective lens, a light gradient force can be applied to the micron particles, and the particles are bound in bright strips. According to the invention, the micron particles can be orderly arranged according to the laser diffraction pattern, the display degree for directly understanding the light diffraction effect and the mechanical effect is high, and the device has important significance for understanding the mechanism formed by optical tweezers.
Owner:HEFEI UNIV OF TECH

Novel rectifier bridge for soybean milk maker

The invention relates to a novel rectifier bridge for a soybean milk maker. The novel rectifier bridge comprises an insulated encapsulation shell, four terminal pins, and four unidirectional conductive chips. One end of each terminal pin extends into the insulated encapsulation shell and is connected with a copper substrate. The copper substrates and the unidirectional conductive chips are encapsulated in the insulated encapsulation shell. The copper substrates are separated from one another. The four unidirectional conductive chips are glass passivated diode chips. Each glass passivated diode chip is provided with electrodes at the upper end and the lower end. The area of the lower end electrode is larger that that of the upper end electrode. The glass passivated diode chips are connected with the copper substrates through the lower end faces of the glass passivated diode chips. The novel rectifier bridge for the soybean milk maker has the advantages that structure is simple and reasonable, size is small, heat radiation is fine, temperature is even, operation is stable and reliable, surge current through capacity is high (surge current of 10ARBU product can reach 275A), impact resistance capacity is high (breakdown voltage can reach 1200V) and the like.
Owner:广东瑞淞电子科技有限公司

Hoisting and swinging machine for construction site

The invention relates to a hoisting machine for a construction site, which includes a support base and a second rotating shaft. The upper surface of the support base is provided with a first chute, and the inner side of the first chute is connected with a steel pipe casing. The support The bases are connected through the fourth rotating shaft, the first chute is connected with the connecting base through rollers, and the upper end of the connecting base is connected with the support rod through the first rotating shaft, and the outer end of the second rotating shaft is connected with the second rotating shaft. A connecting rod, and the upper end of the first connecting rod is connected with the second connecting rod through the third rotating shaft, the lower surface of the first connecting rod is provided with a second chute, and the upper end of the second connecting rod is provided with a connecting rod head, and pulleys are installed inside the connecting head. The construction site hoist adopts the design of the steel pipe casing, the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft, the lock hole and the locking block, which can increase the supporting area, improve the stability and reduce the Small size, easy to carry, and can reduce the labor intensity of workers.
Owner:安徽新兴翼凌机电发展有限公司

Subway carriage and sitting device thereof

ActiveCN107089241AConvenient invisible storageEasy to useSeatsEngineering
The invention discloses a subway carriage and a sitting device thereof. The sitting device comprises at least one sitting stool assembly; each sitting stool assembly comprises a sitting stool, a driving device and a switching device; a floor of the carriage is concavely provided with a containing cavity; the sitting stool and the driving device can be stored in the containing cavity; the driving device is used for driving the sitting stool to extend out of the containing cavity or retract into the containing cavity; the sitting stool comprises a support member connected with the driving device, a sitting umbrella stand arranged at the top end of the support member, and a driving assembly for driving the sitting umbrella stand to stretch and deform; and the driving device and the driving assembly are electrically connected with the switching device. The sitting device disclosed by the invention can be hidden below the floor when the number of passengers in the carriage is larger, so as to enable the carriage to be in a seat-less state, thereby being convenient for carrying more passengers; and when the number of passengers in the carriage is less or passengers who are old, weak, ill or disabled stay in the carriage, the sitting device extends out of the floor to form a seat, thereby being convenient for passengers to sit.
Owner:GUANGZHOU INST OF RAILWAY TECH

Anti-shielding switcher for video surveillance camera

The invention relates to an anti-shielding switcher for a video surveillance camera. The anti-shielding switcher comprises a box body and a cover body clamped on the box body. A window and a chamber are arranged on the box body. A guide shaft is arranged in the chamber. A magnet which is capable of rotating around the guide shaft is arranged on the guide shaft. A driving lever which can rotate with the magnet is connected on the magnet. A coil support is disposed outside the magnet. A coil which can drive the magnet to rotate is arranged on the coil support. A slide sheet which is positioned between the box body and the cover body and can move with the rotation of the driving lever is connected on the driving lever. An infrared cut-off filter and a glass sheet which are capable of switching and aiming at the window with the movement of the slide sheet are arranged on the slide sheet. Since the anti-shielding switcher is isolated by the box body and the cover body, the magnet is not easily subjected to external electromagnetic interference and thus does not affect product performance. The anti-shielding switcher for the video surveillance camera is simple in assembling procedures and is convenient for installation.
Owner:UNION OPTECH

Oil storage device and vehicle provided with oil storage device

The invention provides an oil storage device and a vehicle provided with the oil storage device. The oil storage device comprises an oil pump, an oil tank, a connection assembly and an oil-conveying pipe. The oil pump is connected to the oil tank through the connection assembly; the oil-conveying pipe is arranged at the oil inlet of the oil pump and the oil outlet of the oil tank in a penetrating manner; the oil outlet of the oil-conveying pipe is arranged in the oil pump; the oil inlet of the oil-conveying pipe is arranged in the oil tank; the oil inlet of the oil-conveying pipe is arranged at a position, close to the center of the bottom face of the oil tank, of the oil-conveying pipe. According to the invention, the oil pump and the oil tank are connected together by the connection assembly, so that the oil pump and the oil tank are arranged more compactly, the space occupied by the oil storage device is effectively reduced, and therefore the problem that the oil storage device cannot be arranged on the vehicle due to too large occupied space is avoided. In steering of the vehicle, air is difficult to enter the oil tank and even the oil pump by adopting the oil storage device, so that normal supply of oil in steering of the vehicle is guaranteed.
Owner:BEIQI FOTON MOTOR CO LTD

Conformal OAM antenna combined with Butler matrix feed network

The invention discloses a conformal OAM antenna combined with a Butler matrix feed network. The conformal OAM antenna is composed of a uniform circular array located at one side of the inner wall of acylinder and a 4 * 4 Butler matrix feed network located at the other side of the inner wall of the cylinder, and the Butler matrix is based on a microstrip transmission line and is composed of five directional couplers, a cross junction and two phase shifters. The uniform circular array is composed of four flexible conformal rectangular patches, and the buses of the cylinders are parallel to theradiation edges of the patches and are perpendicular to the non-radiation edges. In order to reduce the influence of conformity as much as possible, the size of the flexible patch array in a flattenedstate is obtained through a table look-up method and the like on the basis of a non-common structure. The performance characteristics of the conformal OAM antenna are THE cylindrical adaptability, integrated design and broadband characteristics of three-mode OAM waves. Under the condition that no extra switch is added, the conformal OAM antenna has the capability of simply switching OAM waves ofthree modes.
Owner:NANJING UNIV OF SCI & TECH
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