54 results about "Microwave cavity" patented technology

The invention discloses a microwave cavity heating structure based on acoustic vibration and a microwave heating homogenization method. Comprising a microwave heating cavity, an acoustic vibration device, a dynamic metal structure, a microwave generator and a temperature sensor, the microwave heating cavity is internally provided with an inner cavity, and the bottom surface of the inner cavity is connected with a plurality of dynamic metal structures which are distributed at equal intervals in an array manner; the acoustic vibration device is arranged on the side wall of the inner cavity and used for generating acoustic vibration to the inner cavity, the microwave generator is arranged on the side wall of the inner cavity and used for injecting microwave energy into the inner cavity to form an electromagnetic field, and the dynamic metal structure generates mechanical vibration under the influence of the acoustic vibration so as to dynamically change the distribution of the electromagnetic field of the inner cavity; and the temperature sensor is arranged at the top of the microwave heating cavity. The problems of hot spots and non-uniform heating in the microwave heating process can be effectively solved, the heating efficiency and quality are improved, and the microwave heating device is suitable for the fields of food processing, material treatment, chemical reaction and the like.

The techniques described herein relate to systems, apparatus, articles of manufacture, and methods for light generation. An example apparatus for ultraviolet (UV) radiation generation includes a microwave cavity comprising an electrodeless UV bulb, the electrodeless UV bulb comprising a bulb fill capable of emitting UV light, a synthesizer configured to generate a microwave signal, and a solid-state amplifier configured to amplify the microwave signal to generate an amplified microwave signal for igniting the bulb fill to emit UV light.

The invention relates to a lunar soil microwave heating effect evaluation method. The method comprises the following steps: establishing a microwave cavity model enclosed by a metal boundary; calculating electric field distribution of the lunar soil according to the magnetic conductivity and the complex dielectric constant of the lunar soil; a plurality of sampling bodies are arranged in the target area, and microwave energy absorbed by each sampling body is calculated according to electric field distribution of lunar soil; determining the specific heat capacity of the lunar soil along with the temperature change, and calculating the temperature change rate in each sampling body according to the microwave energy; calculating the standard deviation and the average value of the temperature change rates of all the sampling bodies, and obtaining a variable coefficient along with the temperature change; and when the temperature of the lunar soil is balanced, judging the microwave heating uniformity of the lunar soil according to the variable coefficient. In the process of analyzing the lunar soil microwave heating effect, starting from the first principle, the characteristic that the specific heat capacity of the lunar soil changes along with the temperature is considered, the physical reality that the lunar soil absorption energy changes along with the temperature in the process of converting the lunar soil absorption energy into the temperature is fitted, and the accuracy of lunar soil microwave heating effect analysis is improved.

The invention relates to a microwave apparatus (1) for continuous treatment of a flowing fluid medium. It comprises an enclosure (2) made of a microwave-reflective material and internally defining a microwave cavity (3) in which the fluid medium flows along a flow axis (A1); an input waveguide (4) extending along a propagation axis (A2) orthogonal to the flow axis and coupled to an input window (41) provided in the enclosure for propagation of microwaves entering the microwave cavity. The invention is characterised in that it comprises a measurement system for determining a symmetry indicator representing a symmetry of an electric field relative to the flow axis inside the microwave cavity, thus representing a centring of the electric field in the fluid medium. Knowledge of this symmetry indicator advantageously allows the symmetry of the electric field in the fluid medium to be controlled.

The invention provides a microwave phase measurement system based on magneton-photon coupling characteristics. According to the system, an integrated electrode support / GGG / YIG / Pt multilayer structure is embedded in a microwave cavity, and magnetons carry microwave phase information through coupling of the magnetons and photons in the YIG. Magneton precession of the YIG layer causes spin current to be generated in the Pt layer, the spin current is converted into measurable voltage signals through inverse spin Hall effect, and high-resolution phase measurement is realized by means of frequency mixing, coherent detection and the like. The method is high in anti-interference capability, can realize high-sensitivity and low-cost microwave phase measurement, and is expected to be used in the fields of spintronics, microwave measurement, quantum information reading and the like.

The invention belongs to the technical field of glass processing, relates to processing of an atomic clock microwave cavity, and relates to a tool and a method for high-precision processing of a large-size thin-wall glass cavity. The two ends of the glass crystal ingot are cut to be flat, and the parallelism of the two end faces after cutting is smaller than or equal to 0.05 mm; a first blank of a barrel-shaped structure is manufactured in the flatly-cut end face through drilling; milling and grinding the first blank to obtain a second blank; and the second blank is polished through the tool, and then the workpiece is obtained. The tool comprises a polishing main shaft, a top roller and a driving mechanism. According to the method provided by the invention, high-precision, high-efficiency and high-reliability processing can be carried out on the large-size thin-wall glass microwave cavity, so that the processing quality of the cavity and the performance of an atomic clock are improved, and the method plays an important role in the aspects of a satellite navigation system, deep space exploration and spacecraft orbit determination, information network synchronization, a national time frequency system and the like.

This invention discloses a linked structure cavity for improving the SPL (Surface Placement) of musical glass, comprising an active device, a microwave cavity, a linked nano-cushion, and a metasurface crystal layer. The active device is disposed on the original glass, and a metasurface crystal layer is horizontally disposed on its end face away from the original glass. A ring-shaped microwave cavity is disposed between the metasurface crystal layer and the original glass, relative to the outside of the active device. The microwave cavity is spaced around the active device and forms a circular region with the metasurface crystal layer and the original glass. A linked nano-cushion is disposed between the metasurface crystal layer and the active device, and the linked nano-cushion and the microwave cavity are configured to not interfere with each other. This multi-dimensional combination of the linked nano-cushion, the microwave cavity, and the metasurface crystal layer forms a strong coupled planar sound field, improving the SPL value of the musical glass. This invention improves the SPL value of musical glass through the multi-dimensional combination of the microwave cavity, the linked nano-cushion, and the metasurface crystal layer.

The present application relates to the technical field of small magnetron microwave cavity, and discloses a passive hydrogen atom frequency standard small magnetron microwave cavity.The passive hydrogen atom frequency standard small magnetron microwave cavity comprises a cavity tube and four pole pieces, a sealed microwave resonant cavity is formed in the cavity tube, one coupling ring is arranged on each side of the side surface of the cavity tube, the two coupling rings are respectively used for input and output of microwave signals, the outer diameter of the cavity tube is 111mm, the inner diameter of the cavity tube is 105mm, and the height is 188.5mm; the pole piece is in an arc structure, four pole pieces are arranged in a ring in the sealed microwave resonant cavity, a connecting column is protrudingly arranged on the side of each pole piece away from the center of the plurality of pole pieces, the connecting column is connected to the side wall of the cavity tube, the annular inner diameter surrounded by the four pole pieces is 61.6mm, the annular outer diameter is 67.4mm, the height of the pole piece is 145mm, and the spacing between each adjacent two pole pieces is 3.8mm.The passive hydrogen atom frequency standard small magnetron microwave cavity is light in mass, small in size, and meets the magnetic field environment requirement of hydrogen atom transition of the passive hydrogen atom frequency standard.

The embodiment of the invention discloses a double-loop sapphire oscillation system, and the system comprises a sapphire microwave cavity which is used for carrying out the oscillation of a first microwave signal to obtain a second microwave signal, and carrying out the oscillation of a third microwave signal to obtain a fourth microwave signal; the temperature device is used for providing a working environment for the sapphire microwave cavity; the coupling module is used for coupling the second microwave signal to the first oscillation circuit, coupling the fourth microwave signal to the second oscillation circuit and feeding the first microwave signal and the second microwave signal into the sapphire microwave cavity; the first oscillation circuit is used for obtaining a first microwave signal according to the first input signal and working in a first working mode after oscillation starting according to the first control signal; the second oscillation circuit is used for obtaining a second microwave signal according to a second input signal and working in a second working mode after oscillation starting according to a second control signal; and the frequency mixing module is used for mixing the third microwave signal and the fourth microwave signal to obtain a target microwave signal.

The invention relates to the technical field of interconnection structures, in particular to an ultra-high-frequency ultra-low-loss chip and transmission line interconnection structure which comprises a transmission line substrate and a microwave structure cavity, a high-frequency chip is bonded to the side edge of the transmission line substrate, and the transmission line substrate and the high-frequency chip which are bonded and consolidated are bonded to the bottom of the microwave structure cavity. The middle position of the bottom surface of the transmission line substrate is provided with a transmission line, the high-frequency chip is communicated with the transmission line through an interconnection structure, the microwave cavity design and the micro-assembly assembling technology are combined, the assembling difficulty is reduced to the maximum extent, the impedance matching of interconnection is improved, in the frequency band of 220-330 GHz, the return loss is smaller than-22 dB, the minimum return loss can reach-28 dB, and the frequency band of 220-330 GHz can reach-28 dB. The insertion loss is less than 0.5 dB, and the minimum insertion loss can reach 0.3 dB.

The invention discloses a cavity structure of MPCVD equipment for producing diamond semiconductors, and the cavity structure comprises a microwave cavity assembly, a main cavity assembly, a lower cavity assembly and a corrugated pipe assembly which are sequentially connected from top to bottom, and the microwave cavity assembly comprises a first water cooling assembly and an air cooling assembly; an objective table assembly is arranged in the main cavity assembly, the lower cavity assembly and the corrugated pipe assembly in a lifting mode and comprises a sample table and a cavity plate, and the sample table is connected with the cavity plate in a sliding mode. According to the invention, an air cooling structure is added, a water and air combined cooling method is used, and the first water cooling assembly and the air cooling assembly arranged in the microwave connection cavity are used for reducing the temperature of the vacuum sealing quartz glass, so that the vacuum sealing quartz glass is prevented from being burnt out by high temperature.

This invention discloses a method for controlling multiple transparent windows based on a coupled-cavity opto-magnetic-mechanical system, comprising the following steps: Step 1: Building a physical model of the coupled-cavity opto-magnetic-mechanical system, including a YIG crystal with a microbridge structure, a microwave cavity, and coupled dual optical cavities; Step 2: The coupled optical cavity and microwave cavity are driven by a strong red detuned optical field and a microwave field, respectively; Step 3: Introducing two weak detection fields at two frequencies to detect the output responses of the two cavity modes; Step 4: Solving for the output spectra of the microwave cavity and optical cavity using the Langevin equations of motion; Step 5: Changing the system coupling parameters to achieve the fabrication of multiple transparent windows, fast and slow light, and Fano resonance phenomena. This invention solves the technical challenge of multiple transparent window coexistence by implementing multiple coupling mechanisms in one system, and utilizes multi-band transparent windows to achieve discrete signal processing, supporting multi-band quantum storage and multi-channel photonic information processing, thereby improving the efficiency and capacity of quantum information processing.

A system for determining shale rock maturity includes a dual mode microwave cavity configured to receive a shale sample, a heating system configured to heat the shale sample to a range of different temperatures using microwave emissions of a first frequency, and a measuring system configured to measure a complex permittivity of the shale sample using a microwave signal of a second frequency.

A method and systems for enhancing the performance of vacuum ultra-violet lamps. The method includes providing a gas to a microwave cavity chamber. The microwave cavity chamber has a length along a central axis of the microwave cavity chamber, a first end along the central axis, and a second end opposite the first end along the central axis. The method further includes providing excitation energy to the microwave cavity chamber and generating a plasma in the microwave cavity chamber. A compensator magnet is disposed toward the first end of the microwave cavity chamber to provide a compensation magnetic field at the first end of the microwave cavity chamber.

The present application relates to a kind of microwave cavities for cold atom microwave clock, belong to cold atom clock field, comprising: main cavity, rectangular waveguide, upper end cover, lower end cover and frequency tuning component;The end cover of main cavity is fixed and sealed with main cavity, the end cover of rectangular waveguide is fixed and sealed with rectangular waveguide itself using laser welding, fundamentally avoid the unreliability problem caused by indium wire sealing, no need to carry out aging test again, shorten the development time of microwave cavity again.The frequency tuning of main cavity is realized using tuning component, the frequency tuning of rectangular waveguide is realized using tuning screw, through double tuning mode and laser welding synergistic effect, no longer need to repeatedly disassemble and grind debugging, further shorten the development time of microwave cavity, simplify assembly and tuning process, be conducive to realization standardization, realize industrialization development.The present application solves the tuning problem of the frequency of cold atom clock microwave cavity, also effectively solves the low reliability, tuning process complex problem caused by using indium wire sealing.

The application provides a quantum space-time reference integrated measurement device, method and system, wherein the device comprises a detection device and a control terminal, the detection device comprises a magnetic shielding cylinder, a magneto-optical trap cavity is arranged in the magnetic shielding cylinder, and different functional areas are integrated in the magneto-optical trap cavity; the functional areas comprise: a cooling cavity, wherein a cooling light and a pumping light are arranged; a microwave cavity, which is used for performing Ramsey first-order interference on a cold atom group after initial state preparation to obtain a frequency error signal between a local oscillator output frequency and a standard frequency; a second-order interference area, which is arranged vertically below an atom free-fall outlet of the microwave cavity and is used for performing M-Z second-order interference; a detection area, which is arranged at the end of the detection device and is connected with the second-order interference area; and the control terminal is in communication connection with the detection device. The application can realize synchronous measurement of time and space references, reduce reference transmission error and equipment cost of the device, and improve the test efficiency of space-time reference information.

According to the angular velocity measuring device and method provided by the invention, the sapphire microwave cavity with high symmetry and low loss characteristics is configured, two microwaves in a degenerate echo wall mode with completely symmetrical propagation characteristics can be excited, and meanwhile, due to the high Q value characteristic of sapphire, the energy loss is low and the frequency stability is high in the signal propagation process; in the rotation process, microwaves in two degenerate modes are propagated in the rotation direction, the forward direction and the reverse direction of the cavity respectively, the linear speed brought by rotation of the cavity enables the effective propagation speed of the forward mode to be synchronously increased, the effective propagation speed of the reverse mode to be synchronously reduced, and the difference between the propagation speeds can be determined through the frequency difference. Therefore, the angular velocity of the rotation of the cavity can be measured with high precision.

The techniques described herein relate to systems, apparatus, articles of manufacture, and methods for light generation. An example apparatus for ultraviolet (UV) radiation generation includes a microwave cavity comprising an electrodeless UV bulb, the electrodeless UV bulb comprising a bulb fill capable of emitting UV light, a synthesizer configured to generate a microwave signal, and a solid-state amplifier configured to amplify the microwave signal to generate an amplified microwave signal for igniting the bulb fill to emit UV light.

The invention relates to a quantum computing device comprising: - a microwave cavity (MC) having a separate or coincident input port (IP) and output port (OP); - a superconducting electronic device (SD) capacitively coupled to the microwave cavity and configured to support a chain of 2N Majorana modes (MM1 – MM4, MM2', MM3'), where N is a positive integer; and - coupling means for applying microwave excitations between each pair of adjacent Majorana modes in the chain. It also relates to a method for realizing a braiding quantum gate on a qubit using a quantum computing device. Figure for the abstract: Fig. 4

The invention provides a vertical graphene array and a preparation method thereof, and the preparation method comprises the steps: placing a reactor in a microwave irradiation region of a microwave generation device, and forming a plasma generation core region in a fixed region of the reactor; placing the substrate in a plasma generation core area of a reactor, fixedly supporting the substrate by a supporting sheet, vacuumizing the reactor, and introducing argon; wherein the supporting sheet is formed by pressing a molecular sieve; and starting the microwave generation device, introducing a carbon source after plasma is generated in the reactor, and carrying out vapor deposition reaction to obtain the vertical graphene array. By designing the sizes of the microwave cavity and the quartz tube and using the molecular sieve tablet as the substrate supporting piece, the growth rate of the vertical graphene is improved.

In one embodiment, systems and methods include an electrospray device for atomizing fluids comprising a body defining a resonant microwave cavity, wherein the body comprises a radio frequency inlet configured to inject a radio frequency signal received from a power source into the resonant microwave cavity, wherein the resonant microwave cavity is configured to to amplify a voltage of the radio frequency signal. The device further comprises a field concentrating pole disposed within the resonant microwave cavity configured to concentrate the amplified voltage at a first end of the field concentrating pole to form an electric field. The device further comprises a nozzle disposed at the first end of the field concentrating pole and a fluid supply line configured to provide a fluid disposed within the field concentrating pole and fluidly connected to the nozzle, wherein the fluid supply line is fluidly connected to a fluid source.

An apparatus for spheroidizing a powder, the apparatus comprising a microwave chamber (20), a plasma chamber (35) having an inner wall and located in the microwave chamber, a confinement tube (3) connected to the plasma chamber, a container for a mixture of a process gas and a powder precursor, and a diverter (110) for diverting the powder precursor to the confinement tube (3), and a container (110) connected to the confinement tube to feed the mixture as an incoming gas stream to the plasma chamber so as to create a plasma torch in the plasma chamber by coupling the gas stream with microwave radiation, the diverter (110) being located within the confinement tube at the inlet of the plasma chamber, the diverter providing a wide channel (118) and a narrow channel (113), and separates the incoming airflow into a central airflow passing through the wide channel and a peripheral airflow passing through the narrow channel.

This invention discloses a true triaxial oil shale thermal recovery simulation test device under disturbance, comprising: a stress loading structure, including a pressure-bearing frame, a loading plate, hydraulic pipelines, a hydraulic pump station, and a loading control system; a microwave heating structure, including a microwave cavity, a microwave source, and a constant temperature chamber; a fracturing pump injection structure, including a water injection pipeline and a water injection pump station; a product extraction structure, including an oil and gas extraction pipe, an oil and gas separation device, and a collection device; a monitoring structure, including an infrared thermometer, strain gauges, and a strain acquisition box; and a disturbance structure, including a disturbance disk and a disturbance control system. This invention is applicable to the technical field of indoor simulation test devices for oil shale. By setting up a stress loading structure, it can more accurately simulate the real triaxial geostress environment, thereby providing an experimental environment closer to the actual situation. The use of microwave heating technology can not only effectively improve heat transfer efficiency but also ensure uniform temperature in all parts of the core.

The invention discloses a miniature annular-gap double-ridge-ripple integrated cavity, which comprises an annular-gap double-ridge-ripple microwave cavity, an MEMS atomic air chamber, a magnetic excitation, a medium matching layer and a tuning structure, and is characterized in that the annular-gap double-ridge-ripple microwave cavity is formed by combining an inner-ring annular-gap structure and an outer-ring cavity through a connecting rod; the inner ring annular space structure is used for forming equivalent inductance and equivalent capacitance of resonant frequency, the outer ring cavity is used for forming an electromagnetic loop and electromagnetic shielding on the inner ring annular space structure, and periodic ridge ripple structures are arranged on the inner walls of the inner ring annular space structure and the outer ring cavity; the MEMS atomic gas chamber is integrated in the annular space double-ridge ripple microwave cavity; the magnetic excitation is used for exciting a microwave magnetic field to the annular space double-ridge ripple microwave cavity; the medium matching layer is used for improving edge axial magnetic field distribution of the micro cavity. According to the invention, the size of the pure metal annular space cavity can be greatly reduced to a millimeter level (less than 1 cm), which reaches the same magnitude as that of the existing printing type annular space cavity technology.

The invention relates to a K-band full-bandwidth high-power magic T synthesizer, which comprises a main substrate, a microwave cavity is arranged in the main substrate, a slot is arranged in the microwave cavity, a diamond load is fixed in the slot, a microstrip is fixed on the bottom surface of the slot, one end of the microstrip is mounted close to the diamond load, and the other end of the microstrip is mounted close to the diamond load. And the other end extends into the microwave cavity. The structure designed in a targeted manner not only effectively solves the problems of large processing difficulty and miniaturization of the waveguide magic T and installation of matching elements, but also ensures high isolation of the waveguide magic T, and provides a novel idea for multi-stage power synthesis and power distribution devices.

The invention provides a bamboo high-frequency microwave anti-cracking pretreatment device, and relates to the field of bamboo processing, the bamboo high-frequency microwave anti-cracking pretreatment device comprises a bottom plate, the upper surface of the bottom plate is provided with a protection box, the protection box is internally provided with a supporting mechanism, the supporting mechanism comprises symmetrical sliding grooves, the interiors of the two sliding grooves are jointly connected with a supporting plate in a sliding mode, and the supporting plate is arranged in the sliding grooves. And through holes arranged at equal intervals are formed in the upper surface of the supporting plate, limiting frames arranged at equal intervals are installed on the upper surface of the supporting plate, a humidifying assembly is installed on the upper surface of the protection box, and an exhaust assembly is arranged on the upper surface of the protection box. Through cooperation of the high-frequency microwave generator, the microwave cavity and the reflecting plate, microwaves can be evenly emitted into the protection box, the uniformity of moisture distribution on the surface of bamboo wood is improved, through cooperation of the steam generator and the water storage tank, steam can be sprayed into the protection box to humidify the protection box, and the bamboo wood is prevented from cracking.

The utility model discloses a device for leaching manganese, iron and aluminum in microwave enhanced manganese oxide slag, which comprises a rotating device, a microwave feed inlet, a microwave cavity, a temperature control system and a leaching container, the rotating device is connected with the microwave cavity through a bearing, the microwave feed inlet is connected with the microwave cavity through a microwave feed-in deformer and a waveguide tube, and the temperature control system is connected with the leaching container. A sensor and a controller of the temperature control system are connected with the microwave cavity and the direct current motor; and the leaching container is fixed on a container jacket in the cavity. Through cooperation of microwaves and rotary stirring, energy is focused through the deformer, infrared temperature control and corrosion resistance design are combined, efficient leaching is achieved, the reaction time is shortened, the leaching rate is increased, and the device is energy-saving, environment-friendly, easy and convenient to operate and suitable for resource utilization of various solid wastes.

This invention belongs to the field of superconducting quantum computing technology and relates to a method for realizing a mixed-dimensional quantum phase gate in a superconducting quantum system. The system includes: a microwave cavity as a quantum resonator for carrying photons and encoding target qubits; a superconducting flux three-level qubit as a three-level quantum system used as control bits, coupled to the microwave cavity via a capacitor; and a classical microwave pulse source for applying a controllable microwave driving field to the superconducting flux three-level qubit. The method utilizes the dispersive coupling between the superconducting flux three-level qubit and the microwave cavity in the superconducting quantum system, combined with the controllable microwave driving field applied to the superconducting flux three-level qubit, to deterministically control the phase of the cavity field by the quantum state of the superconducting flux three-level qubit through a one-step evolution process. This invention has a 100% success rate and its operational reliability is far superior to probabilistic optical solutions.

This invention relates to the interdisciplinary field of cavity magnetomechanics and quantum optics, proposing a composite cavity magnetic system and its control method based on YIG sphere-silica sphere coupling. The composite cavity magnetic system includes a microwave cavity, YIG and silica spheres of the same diameter in direct physical contact, an optical fiber coupling device, a bias magnetic field generator, a strong control field generation module, and a weak detection field module, driven synergistically by the strong control field and the weak microwave detection field. The physical contact between the YIG and silica spheres achieves direct coupling of phonon modes, constructing a composite multimode coupling system of microwave cavity photon mode—magnon mode—YIG sphere phonon mode—silica sphere phonon mode—optical whispering gallery mode. This invention utilizes the synergistic effect of magnetostrictive nonlinearity and photomechanical nonlinearity to form two independent coherent nonlinear scattering paths, resulting in more thorough destructive interference of multipath signals and significantly improving the induced transparent absorption effect.