41results about How to "Reduce manufacturing complexity" patented technology

The invention relates to the technical field of coating machines, and discloses a multi-drying coating machine which comprises a supporting plate body, a base material roller, a composite drying machine and a discharging roller, the two ends of the supporting plate body are rotationally connected with the base material roller and the discharging roller respectively, the composite drying machine is arranged between the base material roller and the discharging roller, a tension shaft is arranged between the base material roller and the composite drying machine, and the tension shaft is connected with the supporting plate body. A coating mechanism is arranged on one side of the tension shaft and comprises a rotary coating roller, a supporting base and a comma scraper, a coating base material is arranged between the rotary coating roller and the supporting base, the comma scraper is arranged on one side of the rotary coating roller, and ultrasonic vibration modules are arranged on the upper side and the lower side of the comma scraper; the ultrasonic vibration module changes an electromagnetic field around the comma scraper to enable the surface of the comma scraper to generate high-frequency vibration; the high-frequency vibration of the comma scraper not only optimizes the distribution of the coating, but also enhances the interaction between the coating and the base material, and effectively promotes the contact and permeation between coating molecules and the coating base material.

The invention belongs to the technical field of coal mine airtight wall building, and particularly relates to a movable type airtight wall building double-arm operation platform. Comprising a crawler walking mechanism, and a double-operation-arm stacking unit, a brick arranging area, a brick pre-arranging mechanical arm and a brick feeding area are sequentially arranged on the crawler walking mechanism from front to back; the brick pre-arranging mechanical arm is used for moving bulk bricks in the brick feeding area into the brick arranging area and arranging the bulk bricks into brick units according to the width of a wall body; the double-operation-arm stacking unit comprises a left stacking mechanical arm and a right stacking mechanical arm which act independently, the two stacking mechanical arms grab the brick units from the left row of brick units and the right row of brick units correspondingly to conduct wall building, and the two stacking mechanical arms cooperate to conduct wall building within the set length range. By means of the work division operation mode of brick pre-arrangement and overall stacking, the wall building efficiency can be greatly improved; the two stacking mechanical arms open left and right to conduct wall building operation, and the wall building efficiency is doubled compared with a traditional single-mechanical-arm mode.

The invention relates to an oxygen evolution catalyst for hydrogen production through electrolysis of proton exchange membrane water, a membrane electrode and a preparation method of the membrane electrode, and the oxygen evolution catalyst is iridium oxide in a nanoparticle form and contains 2-2.5% of crystal water; the preparation method of the catalyst comprises the following steps: carrying out ultrasonic treatment on an iridium salt solution, mixing the iridium salt solution with magnesium sulfate and water, carrying out ultrasonic treatment, volatilizing a solvent, drying, carrying out ball milling to obtain powder, carrying out high-temperature calcination, dissolving with dilute acid, carrying out suction filtration with water and ethanol until the conductivity is less than 10 [mu] s / cm, carrying out vacuum drying to remove moisture, and grinding to obtain the catalyst. The membrane electrode comprises the catalyst powder prepared by the method and an anode catalyst layer formed by perfluorinated sulfonic acid resin; and the cathode catalyst layer is formed by Pt / C and perfluorosulfonic acid resin. The oxygen evolution catalyst provided by the invention has high activity and high stability, magnesium sulfate is adopted in the preparation method, and the oxygen evolution catalyst has the advantages of simple operation, low cost and the like.

This application claims protection for a pressure vessel, a lighter, and an ignition gun. The pressure vessel includes a gas box and a base plate. The gas box includes a gas box body and a threaded sleeve, which is housed within the gas box body and integrally injection molded with the gas box body. The threaded sleeve is used to connect to an exhaust valve. The base plate is connected and sealed to the gas box body, and a cavity is formed between the gas box body and the base plate to contain fuel. The cavity communicates with the threaded sleeve so that the exhaust valve connected to the threaded sleeve can control the release of fuel. This not only reduces the manufacturing complexity and production cost of the gas box but also ensures the accuracy of the threaded sleeve's assembly position on the gas box body, avoiding tolerance fluctuations and cracking risks between the threaded sleeve and the gas box body. This improves the sealing performance and assembly reliability of the pressure vessel, effectively solving common problems such as poor flameout and ignition failure, and providing a reliable guarantee for the performance improvement of lighters, ignition guns, and other products.

The invention relates to a lighting device with a flash effect. A lighting apparatus includes: a solid state light emitting element mounted on a carrier substrate; a package including a light emitting material, the package surrounding a light emitting surface of the solid-state light emitting element, and configured to at least partially convert light emitted by the solid-state light emitting element into wavelength converted light; and a plurality of light transmissive particles at least partially contained within the package, the light transmissive particles having an average longest dimension extension in a range of 0.4 to 1.5 times a layer thickness of the package on the light emitting surface. The light-transmissive particles may interrupt the light-emitting effect of the package material to produce a flash effect.

The application discloses an installation structure and an excimer laser, and relates to the technical field of lasers. The installation structure comprises two cavity fixing plates arranged oppositely, a fixing horizontal plate, an adjusting assembly and guide shafts movably connected with the two cavity fixing plates respectively, the two ends of the fixing horizontal plate are connected with the cavity fixing plates respectively, the adjusting assembly and the fixing horizontal plate are used for arranging a discharge cavity, the adjusting assembly is fixedly connected with the fixing horizontal plate and the discharge cavity respectively, and the adjusting assembly is used for adjusting the position of the discharge cavity, the outer sides of the two cavity fixing plates are both provided with module fixing plates fixed with the guide shafts, and the module fixing plates are used for fixing optical modules. The installation structure and the excimer laser can reduce manufacturing difficulty and adjusting complexity.

The utility model relates to mechanical manufacturing technical field discloses a kind of automatic discharge mechanism of stamping waste, including bottom plate, the upside of bottom plate is fixedly connected with multiple support plates, the top of support plate is fixedly connected with first stamping plate, the top of first stamping plate is provided with top plate, the upside of the left and right ends of bottom plate is fixedly connected with backing plate, the upside of backing plate is fixedly connected with fixed plate, the front end of fixed plate is equipped with opening, the middle part of fixed plate is fixedly connected with rotating shaft, the outside rotating connection of rotating shaft has gear wheel.In the utility model, the up-and-down movement of top plate is used as core power source, stamping operation and waste discharge process are synchronously driven, the debris generated by stamping is automatically dropped to deflector through discharge port, then the deflector is driven reciprocating motion through linkage of rack and pinion, automatic discharge is realized in combination with waste inertia, manual cleaning waste is not needed throughout, and manual operation link is greatly reduced.

This application discloses an automotive hood lock, including a lock plate, a hook lock, and an actuating assembly. The lock plate has a receiving groove extending through its top. The hook lock is rotatably connected to one side of the lock plate. The actuating assembly includes a lever plate, a first rotating shaft, a second rotating shaft, and a pawl located on the same side of the lock plate. The first and second rotating shafts are respectively located on opposite sides of the receiving groove and extend through the lock plate. One end of the lever plate and one end of the pawl are both sleeved on the first rotating shaft, and the other end of the lever plate is used to connect to a pull rope. The other end of the pawl and the hook lock are sleeved on the second rotating shaft, and the pawl has a cavity directly opposite the receiving groove. When the pull rope pulls the lever plate to rotate, the pawl drives the second rotating shaft to rotate, thereby causing the hook lock to rotate and switch between a locked position and a released position, thus locking or releasing the hood lock ring placed in the receiving groove. This solves the problems of cumbersome and concealed traditional double unlocking, and significantly improves in terms of ease of operation, environmental adaptability, and structural reliability.

The invention relates to the technical field of aircraft power generation, and discloses a power generation system of an unlimited continuous underwater aircraft, which comprises a main body frame, a wave energy capturing unit, a solar power generation unit, a transmission and power generation unit and a control and energy storage unit, the main body frame adopts a corrosion-resistant steel structure, a latticed photovoltaic mounting area is arranged at the top of the main body frame, and reinforcing ribs and connecting seats connected with the rotary wings are arranged below the main body frame; the wave energy capturing unit comprises rotary wing modules symmetrically arranged on the two sides of the main body frame. A wave energy capturing unit and a solar power generation unit are compositely integrated, an impeller type capturing piece and a permanent magnet synchronous generator are driven by reciprocating swing of rotary wings on the two sides to operate cooperatively, and meanwhile flexible solar cell modules are arranged on the top of a main body frame and the surfaces of the two wings. Parallel collection and complementary power supply of wave energy and solar energy on the same carrier are realized, and all-weather and multi-mode energy capture and continuous power supply of an underwater vehicle in a complex marine environment are realized.

The invention relates to the field of antennas, and particularly discloses a dual-polarized antenna, which comprises a slot antenna layer for radiating a first polarized wave and a microstrip antenna layer for radiating a second polarized wave, wherein the slot antenna layer comprises a waveguide structure, the waveguide structure comprises a plurality of radiation units arranged along a first direction, and each radiation unit comprises a plurality of radiation slots extending along a second direction; the micro-strip antenna layer comprises a plurality of micro-strip oscillator units arranged along a first direction, and each micro-strip oscillator unit comprises a plurality of micro-strip oscillators arranged along a second direction; the microstrip antenna layer is arranged on the slot antenna layer, at least one microstrip array unit is arranged between the radiation units, and projections of the microstrip arrays and the radiation slots on the waveguide structure are not overlapped; the antenna is simple in structure, has the characteristics of low profile, miniaturization and light weight, can obtain the electromagnetic scattering characteristics of a target in different polarization directions, and is suitable for a high-frequency dual-polarized antenna.

A method includes: forming an opening (204) in a mask layer (202); measuring a feature size associated with the size of the opening (206); determining manufacturing parameters based on the feature size; and forming a second layer (212) in the opening. The second layer is formed based on the manufacturing parameters. A manufacturing system includes a lithography system, a measurement system, a physical vapor deposition system, an oxidation system, and a control system. The control system is configured to control the feed-forward manufacturing process.

The utility model discloses an anthropomorphic dexterous hand and humanoid robot adopting the anthropomorphic dexterous hand. The utility model discloses an anthropomorphic dexterous hand, and the finger driving mechanism includes at least one layer of finger driving motor layer, is equipped with a plurality of finger driving motors in each layer of finger driving motor layer, and each finger driving motor is connected with the finger joint of corresponding hand component through the traction rope, and the number of finger driving motors in each layer of finger driving motor layer is less than or equal to 4; the output shaft of all finger driving motors is outwardly arranged, and the projection in the plane perpendicular to the length direction of arm component does not coincide. The utility model also discloses a humanoid robot, and the anthropomorphic dexterous hand adopting any of the above schemes. The utility model has the advantages of: avoiding the mutual friction, winding and even cutting caused by the path intersection and contact of multiple traction ropes in the narrow space, so that the overall form of the robot arm is more close to the thickness of real human body arm.

The invention relates to a subminiature high-bandwidth single-ended fiber-outgoing film lithium niobate electro-optical modulator, which comprises an SSMP radio frequency assembly, a high-frequency transition film substrate, an electro-optical modulator chip, a dual-core FA, a terminal matching film substrate, an input optical fiber, an output optical fiber and a packaging shell. According to the thin-film lithium niobate electrooptical modulator chip, the waveguide is of a U-shaped structure, the waveguide input port and the waveguide output port are located on the same side of the chip, the dual-core FA is adopted to align the waveguide input port and the waveguide output port for coupling, the space needed by coupling is reduced, and the coupling convenience is improved; a mode field conversion structure is designed on the double-core FA, and the size of an optical fiber spot size is reduced; an SSC spot size converter structure is designed on a chip waveguide, the size of a waveguide spot size is amplified, the size of an optical fiber spot size and the size of a waveguide spot size are converted into the same size, and efficient and low-loss coupling is achieved. The radio frequency feed-in port, the optical input and output port and the direct current pin are located on the opposite side of the device, so that the user terminal array type dense arrangement is facilitated, and the small-sized integration of the system is realized.

The utility model provides a kind of refrigeration device, including box, centrifugal fan and condenser, the bottom of box is equipped with presser cabin, the back of box is equipped with ventilation passage, ventilation passage extends along the height direction of refrigeration device and is arranged, the upper end of ventilation passage extends to the top of box;The air inlet of centrifugal fan is communicated with presser cabin, the air outlet of centrifugal fan is upwards and its air outlet is communicated with the lower end of ventilation passage and butt joint;Condenser is oppositely arranged with the air inlet of centrifugal fan;Centrifugal fan is configured as: when centrifugal fan operates, centrifugal fan can extract air in presser cabin to form airflow, airflow can flow through condenser, then enter centrifugal fan, and then be transported upwards along ventilation passage by the air outlet of centrifugal fan. Ventilation passage can be used as the heat dissipation space of condenser, and condenser is oppositely arranged at the air inlet side of centrifugal fan, airflow can flow through condenser and take away the heat on the surface of condenser and then enter air inlet, to achieve good heat dissipation efficiency.

The invention discloses an organic light-emitting compound and an organic electroluminescent device thereof, the compound is used as a bipolar main body material, and an electron donor unit D (Donat), an electron acceptor unit A (Aceppt) and a large steric hindrance construction unit are introduced, so that the transmission of current carriers can be effectively balanced, excitons can be uniformly distributed, and the light-emitting efficiency is improved. The recombination of carriers at an interface is avoided, and the quenching of triplet state-triplet state under high exciton concentration is reduced, so that the performance and the stability of the device are improved.

The invention discloses an end-to-end snapshot compression computer vision method based on a pseudo-random mask array. The method comprises the following steps of: performing single exposure on a video sequence subjected to space-time light intensity modulation by using a two-dimensional image sensor and a pseudo-random binary mask to obtain a corresponding two-dimensional (2D) compression measurement value; a video reconstruction is taken as a proxy task, a trained compression denoising auto-encoder model is utilized to extract potential spatial-temporal feature representations from the 2D compression measurement values, and the compression denoising auto-encoder model comprises a shared encoder and at least one task-specific decoder. The shared encoder is configured to extract the potential spatio-temporal feature representation from the 2D compressed measurements; and inputting the potential spatio-temporal feature representation into the decoder to obtain a dynamic result of the downstream computer vision task. According to the method, the image reconstruction complexity and the calculation cost are remarkably reduced, the excellent performance can still be kept especially in an extremely low illumination scene, and the privacy protection characteristic is achieved.

The invention relates to a power MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor), in particular to a charge plasma-based double-buried gate power MOSFET structure which sequentially comprises a p-type body region and an n-type drift region from top to bottom, polycrystalline silicon layers are arranged at the left end and the right end of the n-type drift region respectively, the upper surface, the lower surface and the inner surface of each polycrystalline silicon layer are wrapped by oxide layers, and n + charge plasma regions are formed at the left end and the right end of the p-type body region. A p + charge plasma region is formed at the top of the p-type body region; metalizing the substrate to form a drain electrode; metalizing the polysilicon gate layer on the outer side to form a gate; metalizing the outer side of the n + charge plasma region to form a first source electrode, and metalizing the p + charge plasma region to form a second source electrode; compared with an existing VDMOS structure, the VDMOS structure has the advantages of being smaller in thermal budget, lower in manufacturing complexity, lower in on resistance and charge, larger in power density and better in high-frequency performance index.

The utility model discloses a novel balance disc multistage pump body which comprises a main shaft and a pump body outer shell body, the pump body outer shell body is arranged outside the main shaft, a final-stage impeller, a novel balance disc and a tail cover are sequentially installed outside the main shaft in the axial direction, the final-stage impeller and the novel balance disc are arranged between the main shaft and the pump body outer shell body, and the tail cover is arranged on the main shaft. The tail cover is installed on one side of the pump body outer shell, a guide vane chamber is formed in the side, away from the tail cover, of the pump body outer shell, a middle section shell installation straight opening is formed in the outer portion of the side, away from the tail cover, of the pump body outer shell, a pump body flow channel outlet is formed in the outer portion of the pump body outer shell, and a pump body water outlet flange is installed at the end of the pump body flow channel outlet. A pull rod cover is installed outside the pump body outer shell, and a shaft seal chamber is arranged between the tail cover and the main shaft. The structure of the pump body is redesigned, a last-stage guide vane in a traditional multi-stage pump is omitted, the last-stage impeller is directly installed on the pump body, the structure is simplified, and manufacturing cost and maintenance complexity are reduced.

The application relates to the technical field of medical devices, in particular to an anchor assembly and an anchor implantation system. The anchor assembly comprises a plurality of first anchor units. Each first anchor unit comprises a first anchor and a first suture segment wound around the first anchor. One end of the first suture segment is a first pulling end used for connecting with an adjacent first anchor unit. When the first pulling end is pulled, the first suture segment is wound into a locking knot, and the first suture segment is bound to the first anchor. The application aims to solve at least one technical problem in the background art and provides an anchor assembly and an anchor implantation system.

This utility model discloses a high-speed slitting machine, relating to the field of production machinery, which solves the problem of high cost in existing bag-making machines. The key technical points are: it includes a cutting device; the cutting device is used to cut valve bags; the cutting device includes a cutting mechanism, a bag-pressing mechanism, and a driving mechanism; the cutting mechanism includes a reciprocating assembly and a cutting blade; the cutting blade is mounted on the reciprocating assembly; the reciprocating assembly drives the cutting blade to reciprocate vertically; the bag-pressing mechanism includes a pressing assembly and a pressing blade; the pressing blade is mounted on the pressing assembly; the pressing assembly drives the pressing blade to reciprocate vertically; the driving mechanism is connected to the reciprocating assembly and the pressing assembly, driving them to move synchronously; when the cutting blade is at the lowest point of its reciprocating stroke, the pressing blade is also at the lowest point of its reciprocating stroke; when the cutting blade is at the highest point of its reciprocating stroke, the pressing blade is at the highest point of its reciprocating stroke. This achieves the goal of reducing costs.

This utility model relates to the field of dual dynamic driver headphone technology, aiming to solve the problems of existing push-pull dual dynamic driver headphones where a single dynamic driver unit is the main source of sound, resulting in limited dynamic range and output efficiency, and parallel dual dynamic driver headphones where the multi-cavity design leads to increased size and weight, and discomfort when worn. The present invention provides a rear-mounted dual dynamic driver headphone, including a housing, within which a first dynamic driver unit and a second dynamic driver unit are installed, arranged back-to-back. The space formed between the diaphragm side of the first dynamic driver unit and the housing is the front cavity of the first dynamic driver unit, and the space formed between the diaphragm side of the second dynamic driver unit and the housing is the front cavity of the second dynamic driver unit. The space between the two dynamic driver units is a shared rear cavity. The front cavities of the first and second dynamic driver units are connected by an acoustic channel. A sound outlet is provided on the housing, and the front cavity of the second dynamic driver unit is connected to the sound outlet. This utility model has significant improvements in sound quality, wearing comfort, and production efficiency.

This invention discloses a siphon heat pipe radiator for an outdoor unit of an air conditioner, relating to the field of energy-saving air conditioning. It includes an evaporator and a condenser connected together. The evaporator is mounted on the outdoor unit of the air conditioner. The condenser includes a manifold connected to the outlet of the condenser. A first partition plate is arranged inside the manifold along a first direction and is connected to the evaporator. The first partition plate divides the manifold into an upper chamber and a lower chamber, which are sequentially distributed along a second direction. A connecting area is formed between the side of the first partition plate away from the evaporator and the side wall of the manifold, connecting the upper and lower chambers. Through holes are formed on the first partition plate. A proximal region, a middle region, and a distal region are formed on the first partition plate along the first direction, with the density of through holes corresponding to the proximal, middle, and distal regions increasing sequentially. This invention solves the problems of gas-liquid entrainment and uneven vapor distribution.

The utility model provides a simulation nose landing gear turning device. The simulation nose landing gear turning device comprises a steering column, a steering driving mechanism and a combined shell assembly. The steering driving mechanism achieves the function of driving the steering column to rotate through transmission of an air cylinder, a linear guide rail and a gear rack, the structure is simplified, and the machining precision requirement is lowered. The combined shell is composed of the left shell, the right shell and the end cover, and installation, maintenance and teaching are convenient. According to the invention, the manufacturing and maintenance cost can be obviously reduced, the hydraulic oil leakage problem is avoided, and the teaching and maintenance convenience is improved.

The utility model provides a kind of bag body leakproofness detection equipment, it is related to leakproofness detection technical field, the bag body leakproofness detection equipment provided by the utility model includes first support frame, driving device, pressing plate and detection device;First support frame has supporting surface;Pressing plate is located above first support frame along vertical direction, and the first avoiding gap of avoiding product surface upper convex structure is opened in pressing plate, driving device is connected with pressing plate and drives pressing plate to move along vertical direction;Detection device is connected with driving device and is configured to fill in test medium into product and block the test medium outlet of product.The bag body leakproofness detection equipment provided by the utility model is favorable to guarantee the accuracy of test result, and convenient for product's taking and placing material operation.

The invention belongs to the technical field of aero-engine ground test equipment, and particularly discloses an integrated device with multi-type positioning and environment simulation functions. The tool comprises a supporting structure, a positioning structure and a box body structure. The supporting structure is a rigid framework formed by longitudinally and transversely welded rib plates, and an outer partition plate integrated with a multifunctional connector is fixed to one side of the supporting structure. The positioning structure is installed on the rib plate in a modularized mode through the replaceable installation sleeve and comprises at least two horizontally-adjustable positioning assemblies and one vertically-adjustable positioning assembly, the positioning requirements of aviation products of different models can be rapidly met by replacing the installation sleeve, and the positioning pin can freely move in the axial direction to compensate thermal expansion. The box body structure comprises side plates and a top plate and can be rapidly disassembled and assembled with the supporting structure, when an environment test is needed, the box body structure and the supporting structure jointly define a heat-preservation and sealed simulation environment cavity, and lubrication, sensing and temperature control gas conveying is conducted through reserved connectors in the outer partition plate. The universal positioning function and the integrated environment simulation function are highly integrated, the technical problems that an existing tool is single in function, inconvenient to switch and complex in simulation environment construction are solved, the test efficiency is remarkably improved, and the table building cost is reduced.

The present disclosure provides an in-slot cooling channel for an electric machine. A cooling manifold (112, 800) for an electric machine (14, 100) is presented that utilizes a hollow bolt (110) feed solution that utilizes an existing bolt structure and an interface with a housing (201) of the electric machine to form a fluid passage for directing coolant to an interior portion of a stator of the electric machine (14, 100). The hollow bolt (110) forms a sealed fluid interface without the need to add additional seals, thereby reducing the manufacturing complexity of the motor (14, 100). In-slot cooling with a manifold (112, 800) or with a plurality of said manifolds can eliminate the dependence on slot liners and varnishes for limiting relative movement of end windings of the stator and providing electrical isolation while also cooling the hottest portion of the electric machine (14, 100), significantly affecting the thermal confinement capability of the electric machine.

The application provides a housing assembly, which comprises a housing plate and a sensor. The housing plate has an inner side and an outer side opposite to each other. The sensor is integrally arranged on the inner side and sealed into the inner side of the housing assembly. In the present disclosure, the sensor can be directly integrated inside the housing assembly without additional arrangement space. The sensor is integrally designed with the housing plate and can directly sense the vibration of the housing plate. The sensor is integrally formed with the housing plate and is not easy to enter impurities such as water, so that additional sealing treatment is not needed, and the reliability is improved. Finally, the integration of the sensor and the housing plate is completed at one time through a process such as injection molding, so that the manufacturing cost and assembly complexity are reduced.

This utility model relates to the field of battery pack technology, and discloses a front panel assembly and a battery pack. The front panel assembly includes: a panel body, on which at least one mounting cavity and a connecting post are provided, the connecting post extending away from the panel body and forming a bearing surface; a baffle, which can be opened and closed to cover the mounting cavity and has a locking hole aligned with the connecting post, the locking hole penetrating the baffle, and having a limiting surface flush with the bearing surface within the locking hole; and a locking member, which is detachably inserted into the locking hole and connected to the connecting post, and the head of the locking member simultaneously abutting against both the bearing surface and the limiting surface. The advantages of this utility model are that it is easy to maintain, structurally stable, and provides good protection.

The invention relates to the technical field of antennas, in particular to a marginal inductive loading-based radio frequency identification miniaturized narrow-beam antenna, which comprises a top dielectric substrate and a bottom dielectric substrate, the lower surface of the bottom dielectric plate is provided with a reflection copper-clad grounding plate, and the upper surface is provided with a feed network. The upper surface of the top layer dielectric substrate is provided with a rhombus metal patch with two feeding points, and four corners of the rhombus metal patch are respectively located at the midpoint positions of four edges of the top layer dielectric substrate; the four corners of the top layer dielectric substrate are respectively provided with a triangular parasitic patch, and each triangular parasitic patch is connected with the reflection copper-clad grounding plate on the lower surface of the bottom layer dielectric substrate through a short circuit screw. The top layer dielectric substrate and the bottom layer dielectric substrate are kept at an interval of a specific height through the short circuit screws, so that an air layer is formed; and two feed points of the rhombic metal patch are respectively connected with a feed network on the upper surface of the bottom dielectric substrate through a metal probe which vertically penetrates through the air layer.