139 results about "Radiation properties" patented technology

Embodiments of the present invention provide a therapeutic device. The therapeutic device includes an inner layer including a plurality of sensing locations and a plurality of stimulating locations constructed therewithin. Furthermore, the therapeutic device includes a plurality of stimulation elements located within the plurality of stimulating locations. The therapeutic device further includes a plurality of optical fibers including a plurality of respective first optical endpoints and a plurality of respective second optical endpoints, the plurality of first optical endpoints located within the plurality of sensing locations. Furthermore, the therapeutic device includes an optical sensor configured to receive electromagnetic radiation from the plurality of second optical endpoints. The therapeutic device also includes a control module configured to determine radiation characteristics of the electromagnetic radiation received by the optical sensor and activate one or more of the plurality of stimulation elements in correlation with the determined radiation characteristics.

The invention relates to a non-Lambert surface emissivity inversion method, belongs to the technical field of infrared optical measurement and radiation modeling, solves the technical problems of low precision and poor model stability of non-Lambert surface emissivity inversion, and comprises the following steps: measuring original radiation intensity of a non-Lambert surface of a to-be-tested material in different emergent directions; converting the original radiation intensity into directional reflectivity; on the basis of the generalized Lorentz function, diffuse reflection background items are superposed, and a physical prior model is constructed; physical constraint is carried out on the physical prior model parameters; the parameter residual network generates a parameter field, and the parameter field is input into the optimized physical prior model; and carrying out hemispherical integration, and converting the directional reflectivity into directional-hemispherical emissivity. The device and the method are used for infrared thermal imaging measurement, material radiation characteristic characterization and engineering detection in a complex environment.

The invention relates to a microstrip patch antenna based on an antipodal double-helix groove, which comprises the antipodal double-helix groove, a patch, a substrate, a grounding plate and a coaxial probe, and is characterized in that the substrate is mounted on the grounding plate, the patch is mounted on the substrate, the antipodal double-helix groove is formed in the patch, and the coaxial probe sequentially penetrates through the grounding plate, the substrate and the patch; the coaxial probe is used for feeding the patch, and a radio frequency electromagnetic field is generated between the patch and the grounding plate. According to the microstrip patch antenna, the antipodal double-spiral grooves are formed, the path length of current flowing through the patch is increased, the resonant frequency of the antenna is reduced to a large extent, meanwhile, the good radiation characteristic is kept, the antenna radiation efficiency is high, the directional diagram is regular, and the electrical size of the microstrip patch antenna is reduced while the high radiation efficiency is kept.

The invention discloses an electromagnetic environment-friendly radiation protection assessment method and system, and the method comprises the steps: obtaining electromagnetic field data containing power frequency and high-frequency components through a data collection device, generating a multi-dimensional index data set and a radiation characteristic distribution diagram through the combination of exposure time and a crowd sensitivity index through a computational simulation method, and accurate quantitative analysis of the complex electromagnetic environment is realized. On the basis, a weight analysis method is adopted to fuse effect parameters to calculate a risk quantitative score, when the score exceeds a safety threshold value, radiation limit value data is automatically extracted to generate a visual risk map, and a processing module is linked to output a grading protection instruction. By activating protection configuration in the sensor network, decision unit parameters are dynamically adjusted according to real-time electromagnetic field data, and an optimized protection scheme including a dynamic strategy is formed. According to the invention, the conversion from passive protection to active early warning is realized, and the intelligent level and protection effect of electromagnetic radiation protection are significantly improved.

The invention provides an electronic device. The electronic device comprises an antenna, an electromagnetic energy detector and a controller. The electromagnetic energy detector is located near the radiator of the antenna. The controller can adjust the current distribution on the radiator through being coupled with the electromagnetic energy detector, so that the antenna still has good radiation characteristics in a state of being held by a user.

This invention provides a method for rapid planar near-field measurement of large-aperture antennas, relating to the field of antenna technology. The method obtains sparse field amplitude and phase information of several sampling surfaces in the near-field radiation region of the antenna under test through large-step uniform sampling. Simultaneously, it samples a finite number of precise field amplitude and phase information points for each sampling surface and obtains the field distribution characteristics by calculating the fluctuation of the amplitude at the sampling points. Based on the sparse field amplitude and phase information and field distribution characteristics of the sampling surfaces, it uses partitioned interpolation and field distribution calibration methods to obtain the initial electric field of each sampling surface. Based on planar wave spectrum theory, iterative numerical calculations are performed on the initial electric field to recover the near-field distribution of each sampling surface. Finally, the far-field radiation characteristics of the antenna are obtained through near-field-to-far-field transformation. This invention can significantly shorten the testing time while obtaining key indicators of the antenna's far-field characteristics, including the normalized radiation pattern main lobe and first sidelobe, 3dB beamwidth, sidelobe level, and axial ratio.

The invention discloses a method for designing and evaluating a spectral range of a surveying and mapping load wave band, which comprises the following steps of: firstly, transmitting configuration parameters based on radiation under an imaging condition; the entrance pupil radiation characteristic result, the load imaging performance, the image texture characteristic and the spectrum distortion characteristic of the detection wave band designed based on different spectral range parameters at the surveying and mapping load entrance pupil after atmospheric radiation transmission are calculated; and secondly, according to the obtained entrance pupil radiation characteristic result, the imaging performance parameter calculation result, the image texture characteristic parameter calculation result and the spectral distortion characteristic calculation result, evaluating the comprehensive influence of different spectral range parameters on load imaging. According to the invention, the imaging quality and the image information amount of the surveying and mapping load can be evaluated by different spectrum broadening, and the optimal configuration of the spectrum range of the load detection wave band is realized.

The embodiment of the application provides a geological exploration method and device based on the radiation characteristics of the intrinsic subatomic wave of a substance, which comprises the following steps: obtaining remote sensing satellite data by setting the specific range of a target mining area, a scale, a shooting angle, a time period and a wave band, and determining the original negative of the remote sensing satellite corresponding to the exploration area; performing radiation operation on the original negative according to a preset subatomic field generator, performing image enhancement processing on the target substance radiation image according to a nonlinear algorithm, and determining the corresponding target substance digital map; determining the corresponding three directions according to the digital map, determining the corresponding three digital images according to the three directions respectively, performing target substance inversion calculation and target substance model establishment operation according to the three digital images, and determining the corresponding target substance mathematical model to realize the visualization of the target substance. The application can capture the subatomic radiation of the crust mineral elements based on the satellite, detect and visualize the minerals by using the subatomic characteristics, and improve the efficiency and accuracy of geological exploration.

The application discloses a high-temperature and high-pressure combustion chamber spectrum characteristic transmission device based on a special optical fiber probe head, which comprises an optical fiber probe head, a light guide optical fiber, a light emitting characteristic analysis device and a cooling liquid pump; the optical fiber probe head comprises high-transmittance optical glass, a metal cooling sleeve and an optical flange; the high-transmittance optical glass can transmit ultraviolet-visible light with a wavelength of 100-760 nm; the metal cooling sleeve comprises a cylindrical sleeve and a connecting cap; the cylindrical sleeve is coaxially arranged on the outer periphery of the high-transmittance optical glass and is sealingly arranged in a probe head mounting hole; the light guide optical fiber can collect the ultraviolet-visible light transmitted through the high-transmittance optical glass and is connected with the light emitting characteristic analysis device; and the cylindrical sleeve and the connecting cap are both provided with cooling channels connected with the cooling liquid pump. The application can analyze the chemical reaction light emitting characteristics in the high-temperature and high-pressure combustion chamber in real time, is especially suitable for monitoring the spontaneous radiation characteristics of OH*, CH* and C2* groups generated in the combustion process, and thus can determine the reaction region and the reaction heat release.

To provide an antenna device capable of obtaining sufficient radiation characteristics even when arranged in a state of being close to a metal member, and a detection device.SOLUTION: The antenna device includes an annular substrate including a first surface, a second surface, and an opening penetrating between the first surface and the second surface, an annular antenna element provided on the first surface and surrounding the opening, a first feed line provided on the first surface and including a feed terminal connected to the antenna element, a second feed line provided on the second surface and including a connection terminal connected to a communication unit, the second feed line including an overlapping portion that overlaps a first portion of the first feed line in plan view, and a through hole that penetrates the substrate and connects the first feed line and the overlapping portion of the second feed line.SELECTED DRAWING: Figure 4

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 provides a novel radiation boundary structure for a multi-band antenna and the antenna. The novel radiation boundary structure comprises a metal reflection bottom plate, a first radiation layer and a second radiation layer, the PCB side wall is vertically arranged on the front surface of the metal reflection bottom plate; and a plurality of periodic pattern units made of conductive materials are formed on the surface of the PCB side wall and are used for regulating and controlling the radiation characteristics of the antenna radiation oscillator. According to the invention, the PCB-based side wall with the periodic conductive pattern is adopted, so that the lobe width of a directional diagram is effectively improved, and interference between oscillators of different frequency bands is reduced, thereby remarkably reducing directional diagram distortion caused by mutual coupling.

The invention discloses a cold background point target application-oriented infrared detector test evaluation method, which comprises the following steps of: according to radiation characteristics of an actual background and a target, camera parameters and infrared detector test system parameters, enabling a cold background and a cold background superposition point target to be equivalent to a surface source black body temperature tested by an infrared detector; and the performance of the infrared detector is tested and evaluated in the cold background infrared detector test cold cabin. The cold cabin is connected with the focal plane refrigeration and temperature measurement and control module, the black body refrigeration and temperature measurement and control module, the acquisition module and the vacuum pump, and can provide high-vacuum low-background test conditions for extremely low dark current and various photoelectric properties of the high-sensitivity infrared detector. The infrared detector performance parameters obtained by the method can provide test data support for actual performance evaluation of the cold background point target detection camera.

The invention provides an orbital parameter rapid design method and system capable of realizing intersection local time regular traversal, and the method comprises the steps: designing orbital parameters capable of realizing intersection local time regular traversal based on a satellite orbital motion theory according to local time traversal duration, an orbital height target interval and an eccentricity rate set value in combination with regression condition constraints; comprising the following steps: step 1, defining expected traversal time of intersection local time, an expected orbit height interval and eccentricity; 2, estimating an initial value of an inclination angle by taking a mid-value of an expected interval of the orbit height as an initial value and combining traversal time and eccentricity; 3, determining a regression period and the number of flying turns of the satellite around the ground in the regression period by combining regression conditions; and 4, carrying out iterative calculation by utilizing a nonlinear function solving algorithm to determine a final orbit height and a final inclination angle, and completing orbit parameter design. According to the invention, intersection point local time traversal within a specified duration can be realized, and a satellite can be ensured to periodically complete an observation task of acquiring radiation characteristics of different places on the same earth surface.

This invention belongs to the field of computational electromagnetics numerical simulation and provides a simulation method for electromagnetic scattering of thin-coated targets based on Schur complement preconditions. First, for the IBC scattering target to be solved, equivalent surface current and equivalent surface magnetic current are introduced as independent unknowns. The electromagnetic scattering solution equation is established using SDIE and then discretized. Next, the impedance matrix is ​​decomposed into near-field and far-field matrices using an octree structure. For the near-field matrix, key operator sub-blocks are explicitly assembled and extracted. Then, approximate operators in block diagonal form and Schur complement operators are constructed and approximately inverted. Simultaneously, the diagonal product of intermediate blocks is pre-calculated and stored based on the approximate operators. Finally, the constructed preconditions are applied to the GMRES iterative solver. When the iteration error reaches the preset convergence criterion, the current and magnetic current distributions on the target surface are output. Further calculations of radiation characteristic parameters such as the target's radar cross section are then performed, achieving low-cost, high-efficiency, and easily parallelizable electromagnetic simulation solutions.

Systems and methods for illuminating a plurality of plants (11) are disclosed. The system (1) comprises an illumination system (3) configured to illuminate a plurality of plants (11) with radiation having one or more controllable radiation properties, and a data processing system (100) communicatively connected to the illumination system (3). A data processing system (100) comprises an input interface for receiving a signal indicative of a status of a plant canopy, an output interface for sending a control signal to an illumination system, and a processor. The processor is configured to: receive a signal indicative of a status of a plant canopy formed by a plurality of plants (11); determining whether the plant canopy is closed based on the received signal indicative of the status of the plant canopy; and sending a control signal to the illumination system (3), the control signal being based on the determined canopy closure. The illumination system (3) is configured to switch from illuminating the plurality of plants (11) according to a first radiation recipe to illuminating the plurality of plants (11) according to a second radiation recipe different from the first radiation recipe based on the received control signal.

An antenna structure disposed in a case includes a blocking part, a cooling module, an antenna module, and a ground component. The cooling module is disposed on a side of the blocking part. The antenna module is disposed on the side of the blocking part and has an interval space between the antenna module and the cooling module along a first direction. The ground component is disposed in the interval space, and is electrically connected to the antenna module and the cooling module. The ground component, the antenna module and the cooling module jointly define a slot in the interval space. The antenna module has a resonant frequency, and the antenna module couples and excites the slot to generate another resonant frequency. Thus, the antenna structure of the present disclosure can provide multiple frequency bands and great radiation characteristics in an environment with multiple metals.

This invention relates to the field of microwave antenna technology, and discloses an all-metal balanced anti-apod exponentially graded antenna to improve the antenna's impedance matching and radiation characteristics, achieving tuning and pattern optimization effects. The antenna of this invention includes: a metal ground plane; a main radiating arm with a graded direction located in the positive X-axis direction; two balanced anti-apod radiating arms fixed to the metal ground plane with graded directions parallel to the negative X-axis direction and arranged anti-apodally with the main radiating arm; the centers of the three intersecting regions formed by the main radiating arm and the two anti-apod radiating arms with the plane of the metal ground plane are all distributed in the Y-axis direction; a first balancing column, integrally located in the positive X-axis direction, connects the main radiating arm to the metal ground plane; a second balancing column, integrally located in the negative X-axis direction, connects each of the two balanced anti-apod radiating arms to the metal ground plane; and the components of the all-metal balanced anti-apod exponentially graded antenna are arranged symmetrically based on the horizontal planes of the X and Z axes, forming a non-uniform feed.

The invention relates to a rocket takeoff jet flow noise prediction method and system containing multistage water spraying, and belongs to the technical field of aerospace transportation systems.The takeoff jet flow is dispersed into a series of independent point sound sources, sound power and sound radiation characteristics of the point sound sources are established respectively, meanwhile, a control volume is delimited in a jet flow water spraying area, and the control volume is calculated; the jet flow parameter ratio before and after water spraying is calculated, the sound power and radiation characteristics of the point sound source after water spraying are obtained through calculation, and then takeoff jet flow noise after water spraying is obtained; according to the method, takeoff jet noise prediction under different water spraying parameters can be realized, and reference is provided for noise environment design and water spraying scheme design; according to the rocket takeoff jet flow sound source distribution and the rocket takeoff water spraying position, the deflection jet flow noise radiation characteristic and the effective water spraying rate are obtained, the total sound pressure level precision at the takeoff noise peak moment is predicted to be superior to 3dB, the prediction precision of the peak frequency band of the 1 / 3 octave spectrum at the peak moment is predicted to be superior to 3dB, and the method has important engineering application and popularization value.

A horn antenna device is disclosed that comprises: a plastic body comprising a top face, a bottom face opposing the top face and lateral faces adjoining the top face and the bottom face; and a cavity formed in the plastic body, wherein the cavity comprises a cavity opening formed at the top face of the plastic body, wherein the cavity is at least partially coated with a metal layer to form a horn antenna for radiating microwaves through the cavity opening, wherein the plastic body is partially coated with the metal layer, and wherein the metal layer being configured to define a radiation characteristic of the horn antenna.

The invention relates to the technical field of high-energy ion irradiation, and provides a device for observing the interaction radiation characteristics of high-energy ions and substances in a Bragg peak region, which comprises a transparent box body, a beam shaping mechanism, a beam collimating mechanism, an online adjusting mechanism and an X-ray detector, the beam shaping mechanism and the beam collimating mechanism are oppositely arranged on the outer wall of the transparent box body; an objective table is arranged on the online adjusting mechanism and is used for adjusting the position of the objective table; the X-ray detector is used for collecting X-ray spectrum information generated by interaction of high-energy ions and substances in real time. According to the device for observing the interaction radiation characteristics of the high-energy ions and the substances in the Bragg peak region, the to-be-measured substances are placed at different positions on the ion beam transmission path, so that the interaction radiation characteristics of the ion beam and the target substance under different energies are obtained, and assistance is provided for accurate positioning and heavy ion treatment of the Bragg peak region.

The application discloses an antenna with digital regulation of radiation characteristics, uses a medium resonator loaded with an electromagnetic super surface as a radiator, introduces a double-slot feed structure and a half-wavelength phase delay microstrip line to complete polarization and phase reconfiguration, and further realizes digital discretization of polarization and phase. The application can flexibly control the radiation state of electromagnetic waves by selecting different coding sequences. Meanwhile, the radiation characteristic digital regulation array antenna formed based on the antenna structure arrangement of the application has the advantages of small volume, low cost, wide bandwidth, multiple functions, multi-beam dynamic scanning and high design freedom, and can realize flexible beam and polarization conversion, and can also perform digital modulation on the radiation wave by controlling the coding sequence of each element, and is suitable for future beam-controllable intelligent communication or direct signal modulation communication application.

The invention provides a performance optimization method of a rectangular horn antenna and the rectangular horn antenna, and the performance optimization method comprises the steps: firstly adding a matching section, designing the matching end of the horn antenna into a multi-step structure, achieving the effect of reducing the side lobe of an E surface, then adjusting the length of a third step to change the phase difference between a TM12 mode and a TM10 mode, and achieving the effect of reducing the side lobe of the E surface. The side lobe is further reduced, and the ridge of the inner circumferential wall of the field angle radiation section is chamfered to suppress cross polarization. On the premise of keeping the inherent advantages of simple structure, convenience in processing, broadband operation and the like to the greatest extent, the radiation characteristics of the antenna are optimized in a collaborative manner fundamentally, and particularly, troubling D-plane cross polarization is effectively inhibited, and the side lobe level is reduced; therefore, the extreme requirements of a next-generation high-performance communication system on antenna polarization purity and directional diagram quality are met.

The application relates to a single-layer multi-frequency GNSS antenna, which comprises a patch antenna body, the patch antenna body comprises a dielectric substrate and a ground plane, the center of the upper surface of the dielectric substrate is provided with a clover-shaped high-frequency radiation metal plate, the periphery of the high-frequency radiation metal plate is provided with a low-frequency radiation metal plate, a first non-metal gap is arranged between the high-frequency radiation metal plate and the low-frequency radiation metal plate, four edges of the low-frequency radiation metal plate are provided with accommodation grooves, long-strip-shaped radiation metal patches are arranged in the accommodation grooves, and rectifier radiation parts are arranged between four corners of the low-frequency radiation metal plate and adjacent two accommodation grooves, and the four rectifier radiation parts correspond to four sharp corners of the clover-shaped high-frequency radiation metal plate. The application belongs to the technical field of antennas, the radiation performance of the antenna is optimized through a special geometric layout, the foundation of antenna miniaturization and low cost is laid, and the dual-band coverage and good radiation characteristics are preliminarily ensured.

The application provides a method for calculating the infrared radiation characteristics of the plume of a solid rocket engine. The method comprises: obtaining the outlet parameters and the external flow field parameters of the solid rocket engine; calculating the solid particle density and temperature of a plurality of spatial points in the external flow field along the outlet axis of the engine according to the outlet parameters and the external flow field parameters; interpolating the solid particle density and temperature of the plurality of spatial points in the external flow field by using a cubic spline function to obtain the density and temperature distribution of all solid particles in the external flow field; and calculating the radiation characteristics of all solid particles in the full spatial region of the external flow field based on the density and temperature distribution of all solid particles in the external flow field to determine the infrared radiation characteristic distribution of the plume of the solid rocket engine. The method can significantly improve the calculation efficiency of the infrared radiation characteristics of the plume of the solid rocket engine.

The circularly polarized antenna for unmanned aerial vehicle countering comprises a substrate which comprises a grounding layer and a dielectric layer which are arranged in a stacked mode; the patch layer is arranged on the side, opposite to the grounding layer, of the dielectric layer, the patch layer comprises a plurality of patch units in central symmetry, and each patch unit comprises a plurality of annularly connected single patches and a feed space defined by the single patches; the feed structure comprises a plurality of feed lines, the plurality of feed lines and the plurality of patch units are arranged in a one-to-one correspondence manner, each feed line comprises a grounding connection part and a feed connection part which are connected in a bending manner, the feed connection part extends towards the central symmetry point of the plurality of patch units, and the feed connection part is spaced from the patch layer in the stacking direction of the substrate; and the grounding connection part passes through the dielectric layer and is connected with the grounding layer, and the grounding connection part is arranged in the corresponding feed space. According to the circularly polarized antenna for unmanned aerial vehicle countering, a multi-band coverage function can be realized, the antenna has relatively good radiation characteristics, and the countering effect on the unmanned aerial vehicle is ensured.

The invention discloses a phase-free electromagnetic source inversion positioning method and device based on adaptive sparse sampling, and the method comprises the steps: determining the position of an adaptive sparse sampling point for a to-be-measured electromagnetic source on a near-field scanning plane, so as to obtain the near-field distribution data of the corresponding sparse sampling point; recovering the near-field distribution data into uniform distribution data through an interpolation method, and extracting amplitude information to obtain phase-free data; establishing a forward radiation model of the equivalent electromagnetic source according to the electromagnetic field integral equation model and the mirror image effect, and constructing a corresponding error minimization objective function based on the phase-free data and the forward radiation model; performing iterative optimization on the phase-error-free minimization objective function by using an LM algorithm so as to perform inversion on the electromagnetic source to be measured to obtain equivalent magnetic current source distribution; and reconstructing a magnetic field according to equivalent magnetic current source distribution obtained by electromagnetic source inversion. According to the scheme, efficient reconstruction of the near-field radiation characteristics of the radio frequency circuit can be realized while the number of sampling points is reduced and the inversion precision is ensured.

The present invention relates to a technique for associating changes in surface curvature with radiation characteristics and measuring hardness by using pneumatic pressure in a non-contact manner on the surface of agricultural products such as fruits. A hardness measurement system according to one embodiment may comprise: a conveyor control unit, which controls a conveyor to transport an object in one direction; a non-contact pressing unit, which presses, in a non-contact manner, the object being transported in the one direction so as to induce a change in curvature on the surface of the object; a curvature change measurement unit for measuring physical quantity changes or image changes due to the changed curvature; and a hardness calculation unit for calculating the hardness of the object on the basis of the measured changes in physical quantity or image.

The invention relates to the technical field of in-pump flow field testing and noise analysis, and aims to solve the problem that an existing method is difficult to directly and accurately obtain an in-pump flow noise source and radiation characteristics. The technical scheme comprises a measurement method and a device for realizing the method. The method comprises the following steps: acquiring a transient velocity field of a flow field through a PIV technology, and identifying a key sounding vortex structure through vorticity calculation; based on a low Mach number vortex sound equation, vortex field and velocity field action information is substituted into a source item, and the equation is solved to reconstruct a radiation sound field. The device is composed of an experimental model, an optical illumination system, an image acquisition system and a synchronous control system, adopts a transparent visual pump body, acquires particle images through synchronous work of a high-speed camera and a laser, and can be linked with an impeller encoder to realize phase locking measurement. Quantitative and high-precision measurement of the flow noise in the pump is achieved, and key technical support is provided for low-noise design and optimization of the pump.

The utility model discloses a millimeter wave antenna coupling slot structure with wide impedance bandwidth, which comprises a coupling slot arranged on the surface of a radiation patch, telescopic pieces used for changing the effective area of the coupling slot are arranged on the inner walls of the two sides of the coupling slot, and an antenna base is connected below the radiation patch through an adjustable assembly. Through the arrangement of the adjustable assembly and the telescopic pieces, the adjustable assembly can flexibly adjust the height of the radiation patch, so that the performance parameters of the antenna can be optimized, different working environments and application requirements can be met, meanwhile, the effective area of the coupling gap can be changed through the coupling gap and the telescopic pieces on the inner walls of the two sides, and the antenna is more compact. Therefore, the impedance matching and radiation characteristics of the antenna are adjusted, and the working efficiency and bandwidth of the antenna are improved.