56 results about "Coupling strength" patented technology

The invention discloses a ferroelectric field effect transistor-based continuous time physical Isin machine and a solving method thereof, and belongs to the technical field of novel circuit design and calculation. A sigma circuit of the Isin machine is of a latch structure formed by connecting two phase inverters through two switches in a cross coupling mode, each phase inverter is composed of an n-type FeFET and a p-type FeFET, a J circuit of the Isin machine is composed of four FeFETs and used for programming the coupling relation and strength between sigma 1 and sigma 2, continuous time solution is achieved by programming the FeFETs of the J circuit, and therefore the coupling relation between sigma 1 and sigma 2 is obtained. And by continuously modulating the threshold voltage of the FeFET, the continuous modulation of the coupling strength can be realized, and a plurality of coupling coefficient circuits are not needed. Compared with a traditional continuous time physical Isin machine, the method has the advantages that the hardware overhead is greatly reduced, and the solving power consumption is reduced.

A system and method for modeling one or more characteristics of a molecule using a quantum device implemented on quantum hardware is disclosed. Through control, via modulation, of coupling strengths between qubits on the quantum device and a comparison to an experimentally-measured nuclear magnetic resonance spectrum, J-coupling values may be deduced. These J-coupling values may then be used to recover the molecular structure of the given molecule. The control of coupling strengths may take place through an iterative process until convergence to the one or more characteristics is reached. In some embodiments, such a process may be implemented as part of a quantum computing service. In such cases, the quantum hardware may be local to the quantum computing service, or may be outsourced to a quantum hardware provider.

The invention provides an ultrasonic detection device capable of controlling coupling strength and a method thereof, and belongs to the technical field of nondestructive testing, and the method comprises the following steps: device state and adjustment, ultrasonic sensor installation and position setting, a motor driving a screw rod to stretch out, pressure closed-loop control starting, and motor rotation control through a PID algorithm. And performing signal acquisition operation and device resetting. In the aspect of precision, the force can be accurately controlled in a specific range, the coupling strength is flexibly adjusted according to material characteristics, good acoustic coupling is formed, coupling layer interference is avoided, and the detection precision and the signal quality are greatly improved. The cost advantage is prominent, the hardware cost is greatly reduced, force is accurately controlled, probe abrasion is reduced, and the maintenance and replacement cost is reduced.

The invention discloses an automatic tuning and calibration method and system for a crystal resonator, and relates to the technical field of automatic control. Comprising the following steps: S1, generating a multi-physics field coupling matrix: constructing three-dimensional space distribution of an electromagnetic-mechanical-thermal coupling field through a quantum dot sensor array, and generating the multi-physics field coupling matrix; s2, determining a compensation amount: determining time-varying characteristic parameters in the magnetic component, the mechanical component and the thermal component, constructing a nonlinear multi-body coupling state equation, and determining the corresponding compensation amount; and S3, multi-dimensional cooperative compensation: respectively carrying out mechanical compensation, capacitance compensation and light-operated tuning, and carrying out cooperative compensation through multiple actuators. According to the method, modeling is performed through high-precision three-dimensional space distribution of multiple physical fields, and the interaction of electromagnetic coupling, mechanical coupling and thermal coupling is quantified through the obtained total coupling strength among the resonators, so that the defect that the multi-body effect is ignored in a traditional method is overcome.

The invention provides a quantum device and a preparation method thereof, and the quantum device comprises a superconducting ferromagnet structure which comprises a superconducting layer and a ferromagnet layer disposed on the superconducting layer; and the detector comprises a coplanar waveguide resonator, the coplanar waveguide resonator is in alternating current coupling with the superconducting ferromagnet structure, and the coplanar waveguide resonator is configured to detect the superconducting ferromagnet structure. According to the invention, the circuit quantum electrodynamics is introduced into the research of the superconducting ferromagnet structure, the coupling strength between the superconducting ferromagnet structure and the coplanar waveguide resonator is improved, and the accurate detection of the superconducting ferromagnet structure in the microwave range is realized; the efficiency and speed of quantum information processing are improved by realizing high-efficiency conversion and transmission between the magnetic vibrator and the photons.

A resonating structure and a dielectric filter having the same are disclosed. The resonating structure comprises a body, at least one set of negative coupling holes, and a conductive material layer. The body is made of a solid dielectric material and comprises at least two resonators. The negative coupling holes are formed at a connection between two adjacent resonators. Each set of negative coupling holes comprises a first blind hole and a second blind hole disposed on two opposite surfaces of the body respectively. The first blind hole and the second blind hole are offset from each other in a plane perpendicular to a direction along which the first or second blind hole is dug. The conductive material layer covers surfaces of the body and surfaces of the first blind hole and the second blind hole.

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 utility model discloses a coupling filter, which is provided with a cavity, a cover plate, a first resonant rod and a second resonant rod, the cover plate covers the cavity and forms a first resonant cavity, a second resonant cavity and a coupling window with the cavity, and the first resonant rod and the second resonant rod are respectively arranged in the first resonant cavity and the second resonant cavity. The coupling filter is further provided with a step and a coupling piece, the step is located between the first resonance rod and the second resonance rod, and the coupling piece is fixedly connected to the step. The coupling piece between the first resonance rod and the second resonance rod can remarkably enhance low-frequency-band strong magnetic coupling of the first resonance rod and the second resonance rod, and the coupling strength between the first resonance rod and the second resonance rod can be adjusted through deformation of the coupling piece along the steps. Therefore, the coupling strength of the first resonance rod and the second resonance rod can meet the actual use requirement.

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.

A probe coupling adjusting device relates to the field of dielectric property testing of dielectric materials, and relates to microwave testing methods such as a resonant cavity method, a quasi-optical cavity method and a strip line method which need to adjust probe coupling, and comprises a probe fixing block (1), an indexing ring (2) and a fixing bottom block (3), the probe fixing block (1) is movably connected with the indexing ring (2) through an external thread (8) and an internal thread (9), and the position of the probe fixing block (1) is adjusted by rotating the indexing ring (2), so that the coupling amount is controlled; the indexing ring (2) is movably connected with the fixed bottom block (3), and the indexing ring (2) can rotate relative to the fixed bottom block (3); by rotating the indexing ring (2), the probe fixing block (1) can drive the probe to move back and forth along the X axis so as to adjust the coupling strength. The device is small in size, easy to install and high in adjusting precision.

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.

The invention discloses an optimization method of a low-threshold laser generator based on accurate solution of light-substance coupling intensity, and belongs to the field of laser generator simulation. The method comprises the following steps: giving an initial optical cavity geometric parameter, and setting a Maxwell-Schrodinger equation form, a potential energy item, a boundary condition and an initial value condition; determining specifications according to requirements, obtaining an equation form under the specifications, and decomposing the Schrodinger equation into a spin-free part and a dispersion-free part by using Helmholtz decomposition, the two parts being 0 at the same time; splitting the Schrodinger equation, substituting the Schrodinger equation into an original system, performing full discretization on the obtained new equation, performing solution by using a P1 coordination element, and calculating the convergence order of each variable under different norms; and solving the obtained full discrete format, calculating the light-substance coupling strength, and stopping iteration through iterative optimization when the dipole moment converges and the coupling strength converges, thereby realizing the maximum coupling strength and obtaining the optimized laser generator. The optimization accuracy of the laser generator is improved.

The application discloses a photosensitive neuron driving electromechanical coupling system, a synchronous control method and application thereof, and electromechanical coupling bionic control technology field, and relates to the technical field of establishing a new type of neural circuit for interacting with external light energy; the neural circuit is used as a driving mechanical arm device of an electrical system to establish an electromechanical coupling circuit system; the response dynamics of the electromechanical coupling system is explored, and it is found that there are periodic bifurcations similar to "arc-shaped curves" and "folding shapes" in a multi-parameter space; capacitor is used as a carrier to study the Hamilton energy balance and complete synchronization of the electromechanical system under the electric field coupling; and resistance is used as a carrier to study the energy evolution of the mechanical arm coupling array when the functional parameters such as light intensity and coupling strength change.

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 application discloses a dynamic double-field coupling compensation control method and system based on magnetostrictive effect, and the method comprises the following steps: configuring a magnetic field detection unit and a signal acquisition unit in an electronic bin of a magnetostrictive displacement sensor, collecting the axial magnetic field intensity of a permanent magnet, the circumferential magnetic field intensity of an excitation pulse, and the strain pulse amplitude and propagation time generated by coupling in real time, and constructing a real-time mapping relationship between double fields and strain signals; according to the double-field coupling state, dynamically adjusting the pulse width and current amplitude of the excitation pulse through a pulse adjusting unit, combining the real-time temperature correction parameters of the waveguide wire, and maintaining the coupling strength stable; based on the temperature-sound velocity model, correcting the sound velocity of the waveguide wire, introducing an amplitude-coupling coefficient compensation term to calculate the measurement value of the target position, and simultaneously controlling the power consumption of related units to meet the preset current and voltage limits. The measurement accuracy and environmental adaptability of the sensor are improved.

The invention relates to an ultra-low profile antenna module and electronic equipment. The ultra-low profile antenna module comprises a dielectric plate; the radiation assembly comprises a plurality of radiation units, each radiation unit comprises a plurality of radiation bodies, corresponding coupling paths are arranged between the radiation bodies, and the radiation assembly is provided with a first main coupling path comprising K cascaded magnetic coupling paths and a second main coupling path comprising K cascaded electric coupling paths, the coupling strength difference between the first main coupling path and the second main coupling path is smaller than a preset value; the metal floor and the plurality of short-circuit metal columns are used for realizing electric connection between the radiation assembly and the metal floor; and the plurality of feed metal columns are electrically connected to the corresponding radiation units of the radiation assembly and penetrate through the dielectric plate and the insulation isolation holes formed in the metal floor. According to the embodiment of the invention, the isolation between the radiation units in the radiation assembly can be improved, the antenna efficiency is improved, and the ultra-low-profile antenna module has the characteristic of compact structure.

The present invention discloses a magnetic resonance wireless charging system that suppresses system radiation and stray. It improves the problem that the input impedance and coupling strength of the transmitting antenna vary greatly under different coupling distances, and do not match the output impedance of the power amplifier output, resulting in large reflection at the power amplifier end and low efficiency. Under different coupling conditions, due to the different coupling coefficients and coupling strengths between the transmitting antenna and the receiving antenna, the input impedance of the transmitting antenna at the transmitting end varies greatly at different distances, while the output impedance of the power amplifier varies very little within a certain power range, resulting in a serious mismatch between the input impedance of the transmitting antenna and the output impedance of the power amplifier at some coupling distances, which aggravates spatial stray. The present invention matches the input impedance of the antenna to the output impedance variation range of the power amplifier through impedance matching based on the different input impedances of the antenna at different coupling distances, thereby improving overall efficiency and improving spatial stray.

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.

The invention discloses a multi-field coupling strength analysis method suitable for a cross-medium projectile under a high-speed water entry condition, which comprises the following steps: establishing a flow field model with water entry angle correction, and completing pressure field solution; an improved JC constitutive equation is used for material setting, and the yield behavior of the material under the high strain rate is accurately represented; transferring the flow field pressure from the fluid grid to the structural grid by adopting an inverse distance weighting method, and performing dynamic response analysis to obtain a projectile stress condition; and a crystal plasticity finite element sub-model is embedded in a high-stress area of the projectile, and the damage condition of a projectile body material is further accurately analyzed. According to the multi-field coupling strength analysis method provided by the invention, high-speed water entry of the cross-medium projectile can be more accurately represented, and the simulation precision is improved.

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.

The filter coupling structure comprises a filter shell and two mounting plates, the two mounting plates are arranged at the two ends of the bottom of the filter shell and used for mounting and fixing a filter, a positioning block is further arranged at the bottom of the inner side of the filter shell, and a partition plate is vertically mounted in the filter shell; according to the invention, the coupling plate I, the coupling plate II and the coupling plate III are arranged, the sizes of the coupling plates are not limited to those of the coupling plate I, the coupling plate II and the coupling plate III, and any size of the coupling plate can be selected as required; the higher the height of the coupling plate is, the stronger the coupling strength between the two resonant columns is, accurate adjustment of the coupling strength is achieved, the effective electrical length and fringing field distribution of the resonant columns can be changed through the different lengths of the tuning screws inserted into the resonant columns, and therefore the resonant frequency is finely adjusted, and errors generated by the machining technology are compensated.

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.

The invention provides an electromagnetic hybrid coupling structure, which is arranged in a filter and comprises a dielectric plate, an electric coupling plate, a first coupling screw rod, a first metal arc-shaped plate, a second metal arc-shaped plate and two resonators, the metal layer surface of the dielectric plate is provided with a coupling gap; the electric coupling plate is fixedly arranged in the coupling gap, and two ends of the electric coupling plate are respectively connected with the first metal arc-shaped plate and the second metal arc-shaped plate; the first metal arc-shaped plate and the second metal arc-shaped plate are symmetrically distributed relative to the first coupling screw rod; each resonator and the first metal arc-shaped plate or the second metal arc-shaped plate are coaxially arranged in the filter, and the resonators are connected through coupling connecting ribs to form a magnetic coupling structure. The electric coupling structure and the magnetic coupling structure are independently arranged, and in the debugging process, the electric coupling strength and the magnetic coupling strength can be correspondingly debugged by adjusting the size and the position of the first coupling screw rod and the coupling rib.

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 dielectric filter provided by the embodiment of the utility model comprises a dielectric body, the dielectric body at least comprises two resonators, each resonator is provided with a debugging hole, and the debugging hole is a blind hole with an opening at one end; the dielectric body is also provided with a negative coupling hole, the negative coupling hole is a through hole penetrating through the upper surface and the lower surface of the dielectric body, the axis of the through hole and the bottom surface of the dielectric body form an inclination angle alpha, and the inclination angle alpha is greater than or equal to 40 degrees and less than or equal to 50 degrees; an open slot is formed between the two resonators, and the open slot is located at a position, corresponding to the side surface of the negative coupling hole, between the two debugging holes; the open slot is a three-surface open slot penetrating through the upper and lower surfaces and the side surfaces of the medium body. According to the invention, by adjusting the structure of the dielectric filter, the positive coupling is suppressed while the negative coupling is adjusted, accurate control of the coupling strength is realized, and the performance stability of the dielectric filter is improved.