171 results about "Microwave frequency" patented technology

The invention relates to the technical field of defect detection, in particular to a defect detection method and system based on a microwave frequency crystal resonator, and the method comprises the steps: forming a microwave probe through a microwave frequency crystal resonator array, placing a to-be-detected material below the microwave probe, and setting a scanning area and scanning step lengths in two directions on the surface of the material; controlling the probe to perform point-by-point scanning according to step length, and collecting a plurality of reflection coefficients of each sampling point to form an echo signal matrix; performing singular value decomposition on the matrix, applying an adjustable coefficient to a first singular value and a second singular value, and adaptively selecting an optimal coefficient according to imaging quality to reconstruct an echo signal; performing two-dimensional Fourier transform on the reconstructed matrix, constructing a spatial filter in combination with probe spacing and defect depth to perform phase compensation, performing two-dimensional Fourier transform to obtain a defect image, and performing threshold segmentation on the defect image to obtain a binary image only containing defects; and analyzing the connected regions to obtain the gravity center position of each defect and the defect area determined by the pixel number and the single pixel area. The problems of serious clutter interference, insufficient defect imaging contrast ratio, difficulty in quantitative evaluation of defect size and the like in the existing microwave detection can be solved.

A diamond magneto-optical sensor includes: a diamond that includes a color center with an electronic spin and is irradiated with excitation light, and an irradiation unit that irradiates the diamond with the excitation light of the color center and electromagnetic waves for magnetic resonance, wherein the irradiation unit receives modulated light having been subjected to amplitude modulation, and a modulation frequency of the modulated light is included in a microwave frequency band.

The invention provides a high-sensitivity magnetic field measurement method based on a quantum measurement principle and a related device, and belongs to the technical field of magnetic field measurement. The method comprises the following steps: correcting a zero field splitting parameter by using an initial magnetic field to enhance the stability of compression strength, and driving an NV cluster to generate a spinning compression state through microwaves to obtain a compression state probe; taking the compressed-state probe as an initial state of the quantum probe, and performing space-time polarization modulation decoupling on the target magnetic field and the environment magnetic field to obtain a decoupling signal; performing quantum phase-locked interference processing on the decoupling signal and a given reference microwave frequency to obtain a frequency shift signal; and performing magnetic field integral reconstruction and sensitivity calibration by using the frequency shift signal and combining the compression parameter of the compressed probe to obtain a final target magnetic field at the detection moment. Based on the quantum measurement principle, in combination with quantum coherent regulation, space-time modulation decoupling and the like, accurate extraction of the target magnetic field can be realized in a high electromagnetic interference environment, and the measurement sensitivity and accuracy are improved.

A current measurement method based on a quantum technology judges the range of formant appearance after current change of a measured wire through a frequency sweep result based on feature points, adaptively locks microwave frequency for frequency sweep, reduces the time cost of the frequency sweep process, greatly compresses the microwave frequency sweep time, and improves the measurement accuracy. The quantum state signal extraction speed can be remarkably improved while the relative high sensitivity is kept, non-contact real-time current measurement is achieved, and the method is characterized by comprising the steps that an atom source is close to a measured wire to couple a magnetic field signal generated by current in the measured wire; the atomic quantum state control system of the atomic source is connected with an upper computer through an electrical integration module, based on the optical detection magnetic resonance technology, in the measurement process, feature points are selected near formants of optical detection magnetic resonance for frequency sweeping, the positions of the feature points are updated in a self-adaptive mode based on the frequency sweeping result of the feature points, and the measurement accuracy is improved. A microwave signal frequency band is adaptively matched with a formant, a current measurement value is obtained, global frequency sweeping is replaced by feature point frequency sweeping, and the measurement speed is increased.

The application provides a modified fluorogypsum-based steel structure fireproof coating and a preparation method thereof, and comprises the following steps: 1) mixing and treating carbide slag and fluorogypsum raw materials to obtain a first intermediate; 2) microwave heating treatment of the first intermediate, wherein the microwave heating treatment process comprises primary heating treatment and secondary heating treatment, and a second intermediate is obtained; 3) secondary mixing treatment of the second intermediate and an excitation agent to obtain modified fluorogypsum; wherein the microwave power of the microwave heating treatment is 300W-500W, and the microwave frequency is 2450MHz-2500MHz; the excitation agent comprises at least two of a sulfate, a silicate and a water-soluble aluminum salt. The method eliminates fluorine ions and acidic impurities in fluorogypsum waste residues which are harmful to the human body and the environment, excites the hydration activity of the fluorine ions and the acidic impurities, improves the high-temperature resistance of the fluorine ions and the acidic impurities, and further makes the fluorine ions and the acidic impurities meet the performance requirements of the modified fluorogypsum-based steel structure fireproof coating, and increases the fluorogypsum waste residue consumption path.

This disclosure provides an electronic control readout system and method for quantum diamond atomic force microscopy. The system includes: a system control readout module, a magnetic measurement algorithm module, and a magnetic measurement control and readout module. The magnetic measurement control and readout module is used to respond to the control signal of the system control readout module by emitting a laser pulse sequence and a microwave pulse sequence of a preset frequency to the quantum diamond probe located at the i-th pixel position of the sample to be tested, and then acquiring the analog fluorescence signal of the quantum diamond probe at the i-th pixel position and outputting the digital fluorescence signal of the i-th pixel. The magnetic measurement algorithm module is used to respond to the control signal of the system control readout module by obtaining the resonance frequency at the i-th pixel position and the preset frequency at the i+1-th pixel position according to the fluorescence photon number of the i-th pixel corresponding to the digital fluorescence signal of the i-th pixel, the resonance frequency at the (i-1)-th pixel position, and a microwave frequency lookup table.

The invention relates to a core temperature sensor (CTS) for use with a microwave cooking appliance that generates microwaves within a specific microwave frequency band for cooking food, wherein the core temperature sensor (CTS) comprises: at least one temperature sensor (TS), an antenna (ANT), a high-frequency oscillator (1) whose output signal can be fed into the antenna (ANT) and whose signal frequency lies outside the microwave frequency of the microwave cooking appliance, a modulation device (OOK) configured to generate a pulse train from the output signal of the high-frequency oscillator (1) by means of amplitude modulation, which corresponds to digital temperature data generated by means of the at least one temperature sensor (TS), and an electrical energy storage device (BAT) for supplying electrically operated components (MCU, TS, OSZ-AMP) of the core temperature sensor (CTS).The invention also relates to a system comprising a core temperature sensor and a cooking device, comprising a receiver for receiving electromagnetic waves emitted by the core temperature sensor and a control device configured to operate the cooking device based on information contained in the received electromagnetic waves.

The invention provides a metal patch loaded miniaturized dielectric resonator antenna for a base station, and relates to the technical field of wireless communication, a specific parasitic metal patch is introduced at the bottom of a dielectric resonator, the limitation that the traditional design only depends on geometric dimension to adjust the frequency is broken through, the TM12 high-order mode frequency is obviously pulled down to be close to a fundamental mode TM10 and fusion is realized, and the antenna has the advantages of being simple in structure and convenient to use. On the premise that the size of the antenna is not increased, the working bandwidth is expanded to 3.4-4.0 GHz. Through the structural design, a cross-shaped groove structure is loaded in the central area of the dielectric resonator, a current path of a TM20 parasitic mode is cut off accurately, directional diagram distortion and cross polarization interference caused by the mode are effectively suppressed, and it is ensured that the antenna has stable radiation performance. Therefore, the antenna has excellent broadband and radiation characteristics, can still keep compact physical size, low profile structure and simple processing technology, and meets the urgent demand of a microwave frequency band wireless communication terminal on high performance and miniaturization antennas.

The invention discloses a radio frequency microwave frequency multiplier which comprises an input resonance filter network, an oscillation amplification network and an output resonance filter network, the oscillation amplification network is adopted as a core architecture, and high power and high gain in a microwave frequency band can be achieved. And meanwhile, the self-adaptive linearization feedback network is used for adjusting the linearity component of the stacked field effect transistors at the bottom layer of the self-bias negative feedback amplification network, so that the whole radio frequency microwave frequency multiplier obtains good high gain, high linearity and high power output capability.

The application discloses a preparation method of high-purity silicon carbide powder, which comprises the following steps: mixing carbon source raw materials and silicon source raw materials, then directly synthesizing the silicon carbide powder by microwave heating solid-phase reaction, cooling the silicon carbide powder, crushing the powder, purifying the powder, and then treating the high-purity silicon carbide powder; a step of continuously rotating the mixed raw materials is arranged in the microwave heating process; the molar ratio of the carbon source raw materials to the silicon source raw materials is 0.8:1-1.1:1; the microwave heating process is that a 300kW tunnel microwave oven is used to microwave heat the mixed carbon source raw materials and silicon source raw materials; the microwave frequency is 915MHz, and an argon protective atmosphere is used during the microwave heating. The application dynamically changes the field distribution, ensures uniform microwave field distribution, ensures that the reaction materials are uniformly heated, and provides a good balanced thermal field for the sample.

The application provides an electromagnetic transmittance enhancer, and belongs to the technical field of microwave frequency electromagnetic wave regulation and control, comprising a plurality of super units arranged in a rectangular shape. Each super unit comprises a dielectric base, a dielectric substrate and a metal patch, the dielectric substrate is vertically arranged at the middle position on the top of the dielectric base; the metal patch is in an inverted L shape and is arranged on one side of the dielectric substrate; when the electromagnetic wave in the air is incident on the upper surface of the electromagnetic transmittance enhancer, the plurality of super units will simultaneously resonate, the electric field component of the transmitted electromagnetic wave will excite electric dipoles of different lengths in the horizontal and vertical directions of the metal patch, and the electric dipoles will interfere with the incident electromagnetic wave to cancel each other out, so that the resonance zero point of the synthesized dipoles points to the direction of the reflected wave, and the electromagnetic wave is transmitted forward from the gap channel between adjacent units. The electromagnetic transmittance enhancer provided by the application can improve the transmittance of electromagnetic wave transmission to the medium under a large incident angle.

The application discloses an electron cyclotron resonance ion source, which comprises a plurality of microwave transmission modules, a plurality of microwave resonance cavities, a plasma generation chamber and a magnetic field module, the microwave transmission module comprises a microwave source, an impedance matcher and a waveguide, the microwave source is used for generating and emitting microwaves, the microwave sources generate microwaves with the same or different frequencies, the inlet of the waveguide is connected with the microwave source, and the outlet is connected with the microwave resonance cavity, each waveguide is connected with one microwave resonance cavity, the impedance matcher is used for adjusting the frequency and standing wave of the microwaves and realizing impedance matching of microwave feeding, the inlet of the plasma generation chamber is connected with the outlets of the plurality of microwave resonance cavities, free electrons are formed at the boundary of the plasma generation chamber and the plurality of microwave resonance cavities, and the magnetic field module is used for generating a magnetic field, so that the free electrons make spiral motion in the plasma generation chamber and collide with background gas introduced into the plasma generation chamber to generate plasma. The electron cyclotron resonance ion source can realize multi-frequency microwave feeding and improve the uniformity of plasma.

The invention discloses a method for constructing a high-conductivity / heat-conductivity carbon material based on microwave induction, and belongs to the technical field of nano carbon material synthesis. According to the method, methane and auxiliary gas are introduced into a variable-frequency microwave vapor deposition system, and the microwave frequency is dynamically regulated and controlled within the range of 2.43-7.5 GHz, so that the methane cracking rate, plasma energy distribution and deposition kinetics are regulated; controllable deposition of multi-scale and multi-morphology composite carbon structures (carbon nanotubes, graphene-like and amorphous carbon) on the surface of a single substrate under the constant temperature condition is achieved, and therefore the microstructure and the electromagnetic response performance are optimized. According to the method, the frequency conversion microwave technology is introduced into a methane cracking deposition system for the first time, atomic-scale controllable deposition of the carbon material is achieved, complex temperature gradient control is avoided, and the obtained carbon-based material has high electric conductivity / heat conductivity, wide-frequency-band shielding effectiveness and excellent structural stability.

The utility model discloses a combined heating microwave oven structure, which comprises a box body, a microwave oven body and a microwave oven body, the electric control board is connected to one side of the inner container and used for supplying power; the microwave frequency conversion board is used for adjusting power supply frequency; the magnetron is used for generating microwaves for heating; the door body is connected to the front side of the refrigerator body and controls opening and closing of the inner container; the heat dissipation assembly is arranged between the box body and the inner container and is used for dissipating heat of the microwave frequency conversion plate and the magnetron; the heat dissipation assembly comprises a first fan, an air duct and an air guide assembly, the first fan is fixedly connected to the inner container, an air inlet of the first fan is matched with the ventilation opening of the box body, one end of the air duct is communicated with the first fan, the microwave frequency conversion plate and the magnetron are both arranged in the air duct, and the air guide assembly is arranged at the other end of the air duct and communicated with the inner container. According to the microwave oven, the microwave frequency conversion plate and the magnetron are cooled through the fan I, meanwhile, heat is blown into the inner container of the microwave oven, and a preheating effect is also provided for the microwave oven.

The application relates to the technical field of frequency reducers, and discloses a microwave frequency reducer with replaceable joints, which comprises a fixing ring, a rotating rod coaxially arranged above the fixing ring, a rotating shaft rotationally connected between the front and rear inner side walls of the top end of the rotating rod, and a pitching rod fixedly connected to the outer surface of the rotating shaft and perpendicular to the axis of the rotating shaft. The microwave frequency reducer with replaceable joints is characterized in that the plug-in structure of the sliding protrusion and the sliding groove is used to realize the quick mounting and dismounting of the high-frequency head, and the elastic locking mechanism composed of the locking rod and the spring is used to ensure the reliable fixing of the high-frequency head, greatly simplify the dismounting process during replacement or maintenance, and reduce the operation difficulty and maintenance cost.

The invention relates to the field of food processing, and particularly discloses an anti-cracking baking process for yolk mooncakes based on microwave targeted preheating, which comprises the following steps: carrying out targeted preheating on mooncake green bodies by using microwaves, selectively acting microwave energy on yolk areas according to the difference of microwave absorption capacities of yolk, stuffing and mooncake crust, preheating the yolk areas to 45-60 DEG C, and carrying out microwave targeted preheating on the mooncake green bodies; meanwhile, the outer layer temperature rise is controlled not to exceed 10 DEG C; then overall hot air baking is performed, and preferential curing and overall uniform heating of the egg yolk are achieved through cooperative regulation and control of microwave frequency, power and time in combination with infrared real-time temperature measurement feedback. According to the method, the yolk in the yolk mooncake is pre-heated in a targeted manner, so that the thermal stress of internal and external components of the mooncake in the baking process is balanced, the problem of cracking of the mooncake crust caused by asynchronous curing is fundamentally solved, and the yield and the product quality are remarkably improved.

Autonomous stabilization of a GKP code by parametric comb modulation of microwave frequencies A microwave-range quantum superconducting circuit includes an energy-tunable Josephson junction element (8) connected to a portion of a linear passive circuit (6) exhibiting several resonant modes, the first-form Foster decomposition of which across the Josephson junction element (8) includes a target resonant mode having an impedance Z greater than 13 kOhms and a pulsation w.The energy of said Josephson junction element (8) is adjustable and modulated by at least two respective pulse trains in which the pulses are separated by a duration of 2π / w and have a width less than one-tenth of this duration, the amplitude of the pulses within each respective pulse train being modulated by a respective sinusoidal carrier and the pulse trains are shifted in pairs respectively by a duration Δt such that |sin(w*Δt)| is 13 kOhms / Z, so that the resonant mode of pulsation w stabilizes in one of two GKP states encoding a qubit. Fig.2.

The embodiment of the utility model discloses an anti-vibration device of a microwave frequency source and a microwave transceiver. The anti-vibration device of the microwave frequency source comprises a PCB (Printed Circuit Board), a shell, a shielding cover, first damping flexible glue and second damping flexible glue, the PCB comprises a vibration reduction area, a connection area and a non-vibration reduction area, the non-vibration reduction area surrounds the connection area, the connection area surrounds the vibration reduction area, the connection area is partially hollowed out, and the vibration reduction area is provided with at least one circuit element forming a frequency source circuit; the PCB is installed between the shell and the shielding cover, the shell is provided with a first groove area and a second groove area corresponding to the connecting area and the vibration reduction area respectively, and the shielding cover is provided with a third groove area and a fourth groove area corresponding to the connecting area and the vibration reduction area respectively; the two ends of the first damping soft rubber abut against the bottom of the first groove area and one side of the connecting area respectively, and the two ends of the second damping soft rubber abut against the bottom of the third groove area and the other side of the connecting area respectively.

The invention discloses a radar beacon device with power measurement feedback adjustment and a power measurement feedback adjustment method. The radar beacon device comprises a data processing unit used for receiving parameters and control instructions, processing uploaded measurement power information and controlling an attenuation value; the signal processing unit is used for outputting a synchronous trigger signal to the power measuring unit; the microwave frequency conversion unit is used for realizing receiving, modulation and frequency synthesis of radio frequency signals; the power measurement unit is used for collecting observation signals, performing synchronous detection by combining with the synchronous trigger signals, and outputting measurement data to the data processing unit; and the display control unit is used for setting equipment working parameters and displaying the current state and power information of the equipment. According to the invention, the power measuring device is additionally arranged to monitor a transmitting signal, and a monitoring result is fed back to the control unit to control the transmitting link attenuator to set a corresponding attenuation value, so that the actual output power is consistent with the set power value, the problem of outputting absolute power is solved, and the requirement of high power precision is met.

The invention discloses a three-dimensional weaving manufacturing method for a wave-absorbing member based on wave-absorbing hybrid polymer fibers, which comprises the following steps: selecting wave-absorbing hybrid polymer fiber bundling tows containing a wave-absorbing agent, and weaving by adopting a three-dimensional weaving method to prepare a wave-absorbing fiber three-dimensional fabric containing a base layer and a pyramid basic unit array wave-absorbing structure, and then filling and shaping the wave-absorbing fiber three-dimensional fabric by using a light material so as to obtain the wave-absorbing component with the specific expected electromagnetic wave absorbing performance. According to the three-dimensional woven wave-absorbing component based on the wave-absorbing hybrid polymer fibers, multi-layer sleeving weaving can be selected according to design performance requirements, a multi-frequency-band compatible wave-absorbing function for strengthening wave absorption of multiple microwave frequency bands is formed, and therefore the three-dimensional woven wave-absorbing component based on the wave-absorbing hybrid polymer fibers has higher application adaptability.

The invention provides an immunochromatography detection result reading method and device based on solid quantum enhancement, and relates to the technical field of immunochromatography detection. The immunochromatography detection result reading method comprises the following steps: emitting exciting light to a standard substance to excite the standard substance to generate a fluorescence signal for detection; microwaves are output to a standard substance, so that the standard substance generates spin resonance, and the intensity change of a fluorescence signal is caused; collecting the fluorescence signal after intensity change to obtain an optical detection magnetic resonance ODMR reference spectral line; determining a corresponding microwave calibration frequency according to the optical detection magnetic resonance ODMR reference spectral line; exciting light and microwaves which are calibrated according to the microwave calibration frequency and are subjected to amplitude or frequency modulation are emitted to a tested sample; and respectively detecting the fluorescence intensity variation of the quality control line and the detection line to obtain an immunochromatography detection result of the detected sample. The microwave frequency is calibrated by using the standard substance, the interference of background fluorescence is effectively shielded, and the detection sensitivity and accuracy are improved.

A magnetic property measurement device for a soft magnetic material includes a measurement sample magnetic field application mechanism, a diamond NVC sensor, a laser light irradiation mechanism, a microwave irradiation mechanism, an optically detected magnetic resonance spectrum measurement mechanism, and a control and data analysis mechanism, the control and data analysis mechanism is configured to execute a measurement condition input step, a magnetic property measurement step, and a data analysis step, the measurement condition includes a range of an external magnetic field H0, a magnetic permeability μsmp of a measurement sample, and a predetermined frequency sweep width Δω in a microwave, and the predetermined frequency range of the microwave in the magnetic property measurement step is a region of “ωd±Δω” based on a microwave frequency ωd of the dip obtained from a relational expression of “ωd=2.87±28×μsmp×H0”.

The invention belongs to the technical field of microwave electric field measurement, and relates to a microwave electric field measurement sensitivity improving method and system based on an optical array, and the method comprises the steps: 1, respectively constructing a detection optical field and a coupling optical field to interact with a sample cell, and generating a four-channel Rydberg EIT array; 2, after the introduced intrinsic microwave field and the signal microwave field interfere with each other, intermediate-frequency signals are generated on spectrums, and four beams of intermediate-frequency signal spectrums with mutually independent spaces and phases are generated; 3, the four beams of detection signals are synchronously input into a four-channel photoelectric detector for parallel acquisition and superposition processing, and the microwave frequency band electric field detection sensitivity is improved; the system comprises a laser, an atomic gas chamber, a microwave signal radiation unit, an SAS frequency locking system and a reference EIT frequency locking system. According to the invention, incoherent noise of each channel is suppressed through a noise cancellation mechanism, the signal-to-noise ratio of the system is greatly reduced, and finally, the sensitivity is improved by 6 dB in electric field detection of a microwave frequency band.

Various embodiments provide a coaxial signal combiner. The signal combiner includes a coaxial output branch having an output port for outputting a combined signal. The coaxial output branch includes: a first inner conductor; a first outer conductor formed coaxially around the first inner conductor; and a first dielectric material separating the first inner conductor and the first outer conductor. The signal combiner also includes a coaxial radio frequency (RF) branch having an RF input port for receiving RF signals. The coaxial RF branch is electrically connected to the coaxial output branch to transmit RF signals to the coaxial output branch. The coaxial RF branch includes: a second inner conductor connected to the first inner conductor; a second outer conductor connected to the first outer conductor and formed coaxially around the second inner conductor; and a second dielectric material separating the second inner conductor and the second outer conductor. The signal combiner includes a coaxial microwave branch having a microwave input port for receiving a microwave frequency signal. The coaxial microwave branch is electrically connected to the coaxial output branch to transmit the microwave frequency signal to the coaxial output branch. The coaxial microwave branch includes: a third inner conductor; a third outer conductor formed coaxially around the third inner conductor; and a third dielectric material separating the third inner conductor and the third outer conductor. The coaxial microwave branch is connected to the coaxial output branch via a first capacitor structure formed by the first inner conductor and the third inner conductor, and the second capacitor structure formed by the first outer conductor and the third outer conductor.

The invention discloses a microwave multi-channel signal source which comprises a frequency source module, a signal distribution module, a multi-channel amplitude-phase control module, a power amplification module and an integrated control module. The frequency source module is used for generating or accessing a frequency reference signal and generating a microwave frequency signal covering 18GHz to 26.5 GHz; the power amplification module comprises four paths of power amplifiers which are connected with the four paths of outputs of the multi-path amplitude-phase control module in a one-to-one correspondence manner; and the integrated control module comprises a single chip microcomputer control unit and upper computer software. The number of output channels is increased to four, independent switch control and parameter adjustment of each channel of signals can be achieved, and the requirements for simultaneous output and accurate regulation and control of multiple channels of microwave signals are met; meanwhile, the working frequency covers 18-26.5 GHz, high-precision frequency, attenuation and phase shift adjusting capacity is achieved, internal and external excitation signal switching is supported, a visual software operation interface is matched, and the practicability and regulation and control efficiency of a signal source are improved.

The application discloses a kind of based on double-ridge substrate integrated waveguide and microstrip monopole antenna feed structure multiplexing co-boresight antenna, including double-ridge substrate integrated waveguide, surface plasmon polariton structure, Vivaldi radiator, metal grid array and integrated coaxial feed port, antenna uses multilayer stacking structure, surface plasmon polariton structure works as monopole in microwave frequency band, and high frequency and metal grid array jointly constitute metasurface lens;Vivaldi radiator is fed by double-ridge substrate integrated waveguide, for high-frequency end emission radiation;Two frequency bands are excited in orthogonal mode by integrated coaxial port and waveguide port respectively.The application is suitable for 5G / 6G base station, satellite communication and the like system, and has the characteristics of wide bandwidth, high isolation and structure multiplexing under compact profile.

The utility model discloses a synthesizer based on microwave frequency, comprising a synthesizer main body, the synthesizer main body is composed of a core circuit assembly and an outer shell, two sides of the outer shell are provided with basic heat dissipation pore plates, and the outer shell is internally provided with a mesh aperture adjusting mechanism; the mesh hole diameter adjusting mechanism comprises a transverse movement driving rod arranged in a lower cavity of the outer shell, and the right side part of the transverse movement driving rod extends out of the lower cavity and is connected with the output end of a telescopic air cylinder installed on a side frame on one side of the lower cavity. The telescopic air cylinder can drive the transverse moving driving rod to do transverse translational motion in the lower cavity, the ventilation adjusting plate with the adjustable hole diameter is tightly matched with the basic heat dissipation hole plate, the telescopic air cylinder drives the transverse moving driving rod, the bent linkage block drives the jacking column, the position of the ventilation adjusting plate is flexibly adjusted, the ventilation hole diameter is changed, and efficient heat dissipation is achieved. Stable operation of equipment is ensured, and performance reduction and frequency drift caused by overheating are avoided.

This application discloses a high-precision microwave frequency measurement method and system based on continuous-time crystal phase transitions, belonging to the field of quantum sensing technology. This method utilizes the characteristic of the Rydberg atom system at the critical point of a continuous-time crystal phase transition where the response slope of the detected light transmission signal to the microwave frequency is significantly enhanced, breaking through the resolution limit of traditional linear responses. The system includes a quantum sensing unit, an optical excitation and detection module, a microwave modulation and scanning module, an auxiliary radio frequency field module, and a signal processing and control center. By precisely adjusting the parameters, the system is driven to the vicinity of the critical point, the critical frequency is identified, and its high response slope is used to achieve precise frequency measurement. This invention employs a two-stage measurement process, balancing wide dynamic range and high precision, and can be flexibly tuned to adapt to different frequency bands, possessing broad application prospects, especially in microwave communication, frequency metrology, and other fields with significant technical value.

A microwave circulator including an integrated circuit and having a number of ports, a respective superconducting ring segment coupled to each port to allow microwave frequency signals to be transferred between the port and the respective ring segment, a superconducting tunnel junction interconnecting each pair of adjacent ring segments to form a circulator ring, wherein the tunnel junctions are configured so that when a bias is applied to the tunnel junctions, signals undergo a phase shift as they traverse the tunnel junctions between ring segments, thereby propagating signals to an adjacent port in a propagation direction and at least one feature to at least partially suppress quasiparticles within the circulator.

The application discloses a kind of based on optical chirp chain and gas absorption ultrafast microwave frequency measurement method and device, it is related to microwave frequency measurement technical field.The technical points of the present application include: light source is as carrier wave and is formed optical chirp chain after frequency modulation;Extract the lower sideband of optical chirp chain;The lower sideband of optical chirp chain is loaded to be measured microwave signal, after gas absorption, conversion obtains the time-domain electric signal of to-be-measured microwave;To-be-measured microwave time-domain electric signal is demodulated, including obtaining the absorption peak position of time-domain electric signal, the absorption peak position can be demodulated to obtain the microwave frequency to be measured in each sampling period.The present application utilizes optical chirp chain to realize the continuous measurement of microwave frequency, and the gas absorption signal produced is connected head to tail in time domain, and direct collection time-domain signal can complete the real-time monitoring of microwave frequency measurement;Further, introduce reference microwave frequency to compensate the wavelength fluctuation of light source.The present application has strong measurement stability, and can realize ultrafast microwave frequency measurement.