23 results about "Coupling strength" patented technology

This invention discloses a noise reduction method for electromagnetic measurements of Rydberg atoms. This method constructs a 509nm coupled optical closed-loop circulation system comprising a polarization beam splitter, a half-wave plate, and a high-reflection mirror. This enables multiple reciprocating propagations of the laser within the atomic gas chamber. Utilizing the optical path circulation mechanism, the coupling strength between light and atoms is significantly improved without increasing the laser source power, thus greatly enhancing the excitation efficiency of Rydberg states. Simultaneously, this structure allows the intermediate frequency carrier signal to linearly and coherently superimpose with the number of cycles, while the laser background noise accumulates incoherently only according to a square root law, thereby significantly improving the measurement signal-to-noise ratio. This invention solves the problems of low excitation efficiency and difficulty in eliminating laser background noise in existing single-path optical systems, providing a new solution with high excitation efficiency and high signal-to-noise ratio for high-sensitivity microwave electric field measurements.

The invention relates to the technical field of high-frequency transformers, in particular to a design method and system for reducing distributed capacitance of a high-frequency drive transformer, and the method comprises the following steps: collecting instantaneous voltage and current of a winding, fitting an energy density curve, analyzing the coupling strength of a capacitance region, extracting voltage response, smoothly correcting deviation, and positioning capacitance space distribution; detecting a current phase difference and an energy path, judging a capacitance concentration ratio and adjusting a layout coordinate, calculating a phase deviation and energy ratio comparison, optimizing a capacity and spacing ratio, and correcting an error to generate an optimization result. According to the invention, accurate optimization is realized by acquiring voltage and current and fitting an energy density curve, analyzing coupling strength and capacitance distribution, iteratively correcting deviation, adjusting the proportion of capacitance to spacing, balancing an electromagnetic coupling state, improving energy transfer efficiency, reducing parasitic effect, and enhancing system stability and anti-interference capability; and the energy conversion quality and the structural reliability are improved.

The invention discloses an active eliminating type filtering method for cross interference of a charging module and a related device, which are used for improving the electromagnetic compatibility and the stability of a charging system and reducing the influence of the cross interference. The method comprises the following steps: monitoring a charging module output frequency spectrum, and decoupling the frequency spectrum to obtain interference frequency and interference intensity; constructing a digital twinborn model based on the interference frequency and the interference intensity; extracting working state characteristics of the target module, and analyzing by combining the working state characteristics and the expected coupling path to obtain a coupling strength coefficient; according to the digital twin model, generating an expected coupling interference signal generated by the target module; generating an anti-vector signal according to the expected coupling interference signal; injecting the anti-vector signal into a pulse width modulation carrier of the target module to generate an actual driving signal; monitoring a residual interference spectrum output by the target module, and calculating a deviation value between the residual interference spectrum and a preset threshold value; and according to the deviation value, parasitic parameters and anti-vector signals of the digital twin model are updated.

This invention discloses a magnetic field-excited electromagnetically induced transparency-like device and method. The device includes two opposing FR-4 dielectric substrates and a metal-etched resonant structure fixed to the surface of the FR-4 substrates. The metal resonant structure includes a copper double U-shaped ring resonant structure and a double circular ring resonant structure. Both the double U-shaped ring resonator and the double circular ring resonator are excited by incident electromagnetic waves. The incident electric field direction is symmetrical to the structure, and the incident magnetic field direction is perpendicular to the surface of the dielectric substrate. Both the double U-shaped ring structure and the double circular ring structure are excited by the incident magnetic field, but with different coupling strengths, forming a bright-mode-bright-mode coupling. This invention features a bright-mode-bright-mode channel coupling method with simultaneous magnetic field excitation. By using two resonant structures with different coupling strengths to the electromagnetic field, a two-layer electromagnetically induced transparency-like device with large group time delay and high sensitivity is obtained.

The application discloses a kind of ferrite gyromagnetic nonlinear loss transient response theoretical model and parameter simulation method under vertical pumping configuration, belong to microwave technical field, including the following steps: obtaining ferrite material parameters and target excitation microwave signal parameters, signal parameter at least includes microwave signal frequency, pulse width tau;Pulse width dependent function for representing consistent precession magnetic moment and the coupling strength of non-consistent precession magnetic moment (spin wave) is constructed.In view of this, the application first establishes the quantitative relationship model between the excitation microwave pulse width tau and the nonlinear loss excitation threshold (tau) in the theoretical framework of vertical pumping configuration, establishes the quantitative relationship model between the excitation microwave pulse width tau and the nonlinear loss excitation threshold (tau).The model can accurately describe the nonlinear effect of ferrite under nanosecond transient pulse excitation, and the dynamic law of the excitation condition and the change of pulse width.For the design of ferrite limiter device facing high-power microwave electromagnetic environment, important theory and design basis are provided.

The invention discloses a symmetric quasi-optical cavity design method for dielectric constant measurement, which belongs to the technical field of quasi-optical cavity design and comprises a mirror design method and a coupling design method. The design method of the mirror is as follows: the quasi-optical cavity is composed of a transmission-type spherical mirror with a symmetrical structure, and parameters needing to be designed mainly comprise the curvature radius of the spherical mirror, the aperture radius of the spherical mirror, the distance between the two spherical mirrors and the material of the spherical mirror; factors considered during design comprise intrinsic spectral line purity, stability of an open cavity, an open cavity Q value and a girdling radius; the coupling design method comprises the following step of feeding a signal into and out of the symmetrical quasi-optical cavity by adopting a coupling ring mode. According to the design method of the symmetric quasi-optical cavity, the coupling ring is innovatively placed between the two spherical mirrors for signal feed-in / feed-out, a traditional fixed small hole coupling mode is replaced, the coupling strength of the coupling ring is flexibly adjusted through parameters such as the ring diameter, the wire diameter and the position, and the problems that after small hole coupling machining, adjustment cannot be conducted, and flexibility is poor are solved.

It is an objective to provide an arrangement for resetting at least one qubit. According to an embodiment, an arrangement for resetting at least one qubit comprises at least one qubit; an energy dissipation structure selectively couplable to the at least one qubit; and a control unit, configured to reset the at least one qubit by performing: couple the at least one qubit to the energy dissipation structure for a reset period using a control signal, wherein the control signal controls a coupling strength between the at least one qubit and the energy dissipation structure; and after the reset period, decouple the at least one qubit from the energy dissipation structure during a decoupling period using the control signal, wherein the coupling strength comprises, during the decoupling period, at least a temporally linearly decreasing component and at least one temporally sinusoidal component.

The invention relates to the technical field of radar detection, in particular to a multi-atmospheric-parameter adaptive compensation ozone radar high-precision detection method, and the method comprises the steps: constructing a three-layer design of a dynamic coupling factor, an atmospheric parameter-radar signal coupling resonance factor and an ozone inversion stability boundary index, and precisely quantifying a multi-parameter coupling relation; quantifying a linkage effect of atmospheric parameter change-radar signal fluctuation-inversion error; a full-process adaptive system driven by a coupling feature vector is further constructed, an inherent error covariance matrix of the observation system is dynamically adjusted through a second component of the coupling feature vector, the observation weight is improved when coupling is strong, the observation weight is reduced when coupling is weak, a compensation strategy is dynamically selected through a third component of the coupling feature vector, and the compensation accuracy is improved. Accurate adaptation of enhancing compensation when the stability is poor and weakening compensation when the stability is good is realized; and high-precision detection under a complex atmospheric condition is realized.

There is described a method of making a monocrystalline germanium (Ge) membrane. The method generally has: depositing a non-porous layer of monocrystalline Ge onto a porous layer of a monocrystalline Ge substrate, the porous layer mechanically coupled to the monocrystalline Ge substrate by a first coupling strength value and breaking under duress of a mechanical stress exceeding a critical mechanical stress value; depositing a stressor layer of a given material onto the non-porous layer of monocrystalline Ge, the stressor layer mechanically coupled to the non-porous layer by a second coupling strength value greater than the first coupling strength value, the given material of the stressor layer loading the monocrystalline Ge substrate with a given mechanical stress value below the critical mechanical stress value; and moving the stressor layer away from the monocrystalline Ge substrate, said moving freeing the stressor layer, together with the non-porous layer, from the monocrystalline Ge substrate.

This invention discloses a terahertz biosensing metasurface based on the Jones singularity, belonging to the field of terahertz metasurface technology. The metasurface comprises two orthogonally oriented metal open-loop resonator arrays and a dielectric spacer layer between the two layers. By making the upper layer's opening width L1 different from the lower layer's characteristic dimension L3, the two orthogonal polarization modes have different ohmic loss rates. Simultaneously, the interlayer near-field coupling strength is controlled by an in-plane displacement L2. When the combination of these two factors causes a cross-polarized transmission component of the Jones transmission matrix under circularly polarized basis vectors to drop to zero at the target frequency, the system is locked at the Jones singularity. This invention utilizes the square root topological enhancement of the second-order branch point, and the device exhibits highly sensitive intrinsic transmission amplitude splitting at the singularity to weak dielectric perturbations, making it suitable for label-free, ultrasensitive biosensing.

This application discloses an active filtering method and related apparatus for eliminating cross-interference in charging modules, which improves the electromagnetic compatibility and stability of charging systems and reduces the impact of cross-interference. The application includes: monitoring the output spectrum of the charging module and decoupling the spectrum to obtain the interference frequency and intensity; constructing a digital twin model based on the interference frequency and intensity; extracting the operating state characteristics of the target module and combining these characteristics with the expected coupling path analysis to obtain the coupling strength coefficient; generating the expected coupling interference signal generated by the target module according to the digital twin model; generating an anti-vector signal based on the expected coupling interference signal; injecting the anti-vector signal into the pulse width modulation carrier of the target module to generate the actual driving signal; monitoring the residual interference spectrum output by the target module and calculating the deviation between the residual interference spectrum and a preset threshold; and updating the parasitic parameters of the digital twin model and the anti-vector signal based on the deviation.

This provides a coupling mechanism with high coupling strength in the torsional direction. [Solution] The first coupling portion 3A of one robot module 2A is equipped with multiple engaging portions 7 arranged in an annular pattern at the end of the base portion 4 and a drive unit 9 that operates each of the engaging portions 7, and the second coupling portion 3B of the other robot module 2B is equipped with multiple engaging portions 7' arranged in an annular pattern at the end of the base portion 4, and the engaging portions 7 of the first coupling portion 3A and the engaging portions 7' of the second coupling portion 3B are butted together so as to be adjacent to each other in an alternating manner in the circumferential direction, and the engaging portions 7 of the first coupling portion 3A are moved radially by the drive unit 9 and pressed between the two adjacent engaging portions 7 of the second coupling portions 3B.

This application provides a method and system for separating overlapping peaks in spectral confocal thin film thickness measurement signals, relating to the field of thin film thickness measurement technology. Gaussian curve fitting is performed on the left and right peak signals respectively. Then, the wavelength sequence of the target peak signal is substituted into the Gaussian curve function obtained by fitting the other peak signal to calculate the coupling strength value generated by the spillover of a single peak to the other side region. Furthermore, the original measured intensity sequence of the double-peak signal is used as the minuend to subtract the calculated coupling strength value, ensuring that each subtraction process includes the initial optical observation data and avoiding additional systematic numerical deviations introduced during iteration due to changes in intermediate data. This overcomes the single-peak separation distortion problem caused by the inherent asymmetry of the actual signal, thereby achieving decoupling and separation of overlapping double-peak signals and improving the reliability of solving the physical thickness of the measured thin film.

The present application relates to the technical field of fatigue detection, in particular to a hybrid tractor fatigue spectrum mutation detection method for multi-dimensional channel synchronous positioning, comprising the following steps: synchronously collecting and aligning three-channel vibration signals of the hybrid tractor to generate a synchronous multi-dimensional signal; extracting a dominant coupling strength characteristic quantity of a coupling relationship matrix in a preset characteristic frequency band in real time from the synchronous multi-dimensional signal to form a dominant coupling strength time sequence; determining a spectrum characteristic mutation point representing the fatigue state evolution of a key component and outputting an alarm signal. The present application can not only reflect the strongest mode of global coupling relationship, but also be highly sensitive to instantaneous energy concentration and mode enhancement. Compared with traditional amplitude correlation coefficient methods, the present application retains phase coupling information and can capture the global system coupling mode mutation caused by fatigue cracks, gear tooth breakage, bearing jamming and the like to realize rapid identification of potential faults of key components in an early stage.

The application relates to a method and system for defining an effective analysis frequency band of an engineering structure, important parameters of statistical energy analysis of a target system are selected and ranges are defined, including a modal number, a modal overlap factor, a normalized attenuation factor and coupling strength; dimension analysis is carried out in combination with vibration characteristics and boundary conditions of the target system, dimensionless parameters corresponding to the important parameters are obtained, including a dimensionless wave number, a shape parameter, a damping loss factor and a Poisson ratio, according to a corresponding relationship between the dimensionless parameters and the important parameters, an effective diagram of statistical energy analysis of each subsystem is constructed to describe the distribution of the important parameters in the dimensionless parameter space; the effective diagram of statistical energy analysis is analyzed to obtain a dimensionless wave number value range of each subsystem, and then the effective frequency band of the target system is obtained in combination with a coupling relationship. The application has the advantages of rapidness, directness, accuracy and the like, and is helpful to improving the prediction accuracy of high-frequency dynamic response of an engineering structure.

The invention discloses a dynamic double-field coupling compensation control method and system based on a magnetostrictive effect, and the method comprises the steps: configuring a magnetic field detection unit and a signal collection unit in an electronic cabin of a magnetostrictive displacement sensor, the axial magnetic field intensity of the permanent magnet, the circumferential magnetic field intensity of the excitation pulse and the amplitude and propagation time of the strain pulse generated by coupling are collected in real time, and a double-field-strain signal real-time mapping relation is constructed; according to the double-field coupling state, the pulse width and the current amplitude of the excitation pulse are dynamically adjusted through the pulse adjusting unit, parameters are corrected by combining the real-time temperature of the waveguide wire, and the coupling strength is kept stable; and correcting the sound velocity of the waveguide wire based on a temperature-sound velocity model, introducing an amplitude-coupling coefficient compensation item to calculate a target position measurement value, and controlling the power consumption of a related unit to accord with preset current and voltage limits. And the measurement precision and the environmental adaptability of the sensor are improved.

This invention discloses a device and method for measuring the thickness of oil pipe couplings, as well as a method for analyzing the connection strength of oil pipe couplings, belonging to the field of oil-specific thread testing technology. The oil pipe coupling thickness measuring device includes a mounting bracket, a digital display, a movable probe with a displacement sensor, and a fixed measuring shoe. The fixed measuring shoe includes a movable frame and a measuring shoe head mounted on the movable frame. The movable frame is telescopically connected to the mounting bracket, and the measuring shoe head is used to position the thread of the coupling to be measured. The movable probe with the displacement sensor is used to radially abut against the outer diameter of the coupling during thickness measurement. The displacement sensor on the movable side measures the coupling thickness based on the displacement change of the movable probe. This invention solves the problem in the prior art that there is no device for directly measuring coupling thickness and that coupling connection strength can be analyzed through coupling thickness measurement, achieving efficient and accurate measurement of oil pipe coupling thickness and reasonable analysis of coupling connection strength.

The invention discloses a near-field thermal radiation shunting device and method, relates to the technical field of micro-nano scale heat transmission, and aims to solve the problems that an existing near-field thermal management scheme depends on external excitation and is complex in structure, narrow in shunting regulation and control range and low in precision. The device comprises at least three nano-particles with intervals in a near-field range, at least one nano-particle is of a non-spherical structure and can be rotationally adjusted, and continuous adjustment and control of a heat flow split ratio are realized by utilizing optical anisotropy of the non-spherical nano-particles and rotationally adjusting and controlling heat flow coupling strength among the particles. External excitation is not needed, the structure is simple, the split ratio can be continuously and reversibly adjusted in a wide range from 0% to 99% or above, robustness is high, manufacturing cost is low, and the device is suitable for micro-nano-scale thermal management scenes such as high-density integrated circuits and all-optical computing chips.

The technology described herein is directed towards a wide-bandwidth, high-frequency (e.g., millimeter wave) crossover coupler. One implementation of the crossover coupler is passive, designed with a single top metallization layer and single bottom metallization layer, and does not require any interconnecting layer. The design of the top layer can include cross-shaped microstrip lines, and four inner partial couplers surrounded by four radial segments, which effectively direct the electromagnetic fields to the crossover circuit's ports. The bottom layer can include cross-shaped slot openings that can be sized to mitigate RF mismatch. Straightforward design tweaks can change the radio frequency (RF) characteristics of the crossover coupler, including, for example, selecting various design dimensions that determine the center frequency, bandwidth, coupling strength, and / or characteristic impedance of the crossover coupler, and can account for substrate permittivity and the height of the substrate.

This invention discloses a method for improving the thermoelectric performance of an AB ring through lateral coupling and optical field irradiation. The method includes: first, coupling two quantum dots QD1 and QD2 into a dual-quantum-dot structure via a tunnel junction; spatially confining the dual-quantum-dot structure; coupling the dual quantum dots into the AB ring via the tunnel junction; placing left and right electrodes on opposite sides of the AB ring structure; applying thermal radiation to create a temperature gradient between the left and right electrodes; injecting electrons into the AB ring electrodes, causing electron transport under the influence of the lateral coupling of the dual quantum dots and the temperature gradient; and applying an adjustable optical field to the dual-quantum-dot structure. By optimizing the tunneling coupling strength between the quantum dots and adjusting the optical field frequency, the thermoelectric transport characteristics of the system are synergistically controlled, thereby obtaining enhanced spin thermoelectric potential and spin ZT coefficient. This invention optimizes thermoelectric performance by increasing the tunneling coupling strength between quantum dots and improving the optical field frequency, providing a foundation for designing fast-response, high-efficiency, and low-energy-consumption thermoelectric devices.

The invention relates to the technical field of construction project quality detection, in particular to a construction project quality detection method, which comprises the following steps of: constructing a project twinborn model corresponding to a target project structure, and endowing each structural component with a unique ID (Identity) when the project twinborn model is constructed; carrying out a simulation experiment on each structural component in the engineering twinborn model by adopting an iterative positioning method; acquiring a plurality of detection items corresponding to each structural component and initial parameters; judging whether strong coupling correlation exists between the two detection items or not; in the real-time detection process, when it is detected that actual measurement parameters of a certain detection item are gradient parameters obtained through simulation, a reminding signal is output, and an engineering detector is guided to synchronously detect other detection items in strong coupling association with the engineering detector; and calculating the coupling strength, judging whether the detection item needs to be detected or not through the coupling strength, and if not, rejecting the unique ID of the structural component corresponding to the detection item.

This application relates to the field of communications and provides a multimode resonator and filter. The multimode resonator includes a resonator housing, a dielectric resonator, and a first coupling structure. The first coupling structure is disposed on one end of the dielectric resonator and includes a first coupling portion and a second coupling portion. The first coupling portion extends along a first radial direction, and one end of the second coupling portion is connected to the end of the first coupling portion away from the central axis of the dielectric resonator. The second coupling portion extends circumferentially along the dielectric resonator. Two first coupling structures are provided, and the second coupling portions of the two first coupling structures are both disposed on the same side of the first coupling portion. Thus, the coupling between the HE mode and the TE mode along the first radial direction of the electric field polarization direction can be enhanced through the two first coupling structures, optimizing the coupling strength and coupling effect, and reducing or even eliminating the additional parasitic coupling generated when there is only one first coupling structure, thereby optimizing the performance indicators of the multimode resonator.

The invention belongs to the technical field of displacement in oil exploitation, and relates to a quantitative characterization method and system for complex chemical flooding multi-field coupling intensity and a readable medium, and the method comprises the following steps: determining characterization parameters of chemical flooding composite field intensity according to hot water chemical flooding composite field distribution; determining a main control factor parameter matrix of characterization parameters; according to the main control factor parameter matrix, comprehensive factors of different positions in the oil reservoir are obtained in combination with the weights of the characterization parameters; the intensity of the composite field is quantitatively represented according to the comprehensive factor, the composite field area of the oil field is divided according to the intensity of the composite field, multi-field coupling can be fused, quantitative indexes are unified, and the coupling intensity of the composite field in dynamic response is reflected.