139 results about "Electromagnetic metasurface" patented technology

The invention relates to the technical field of electromagnetics, in particular to an ultra-wideband full-polarization large-angle beam scanning theory based on an electromagnetic metasurface, which comprises the following steps of: S1, regulating and controlling a beam far-field phase based on an array global reference phase; s2, adjusting and controlling far-field orthogonal polarization vector field superposition based on array factors to realize full-polarization beam control; and S3, theoretical calculation verification of full-polarization beam regulation and full-wave simulation verification of the full-polarization beam. According to the invention, a novel full-polarization wave beam regulation and control theory based on array factor regulation and control orthogonal polarization vector field superposition is provided, and theoretical calculation and full-wave simulation are carried out on the provided full-polarization wave beam regulation and control theory; according to the theory, the effectiveness and universality of realizing ultra-wideband and large-angle full-polarization beam regulation and control by only using one-bit phase resolution are verified.

The invention belongs to the technical field of antenna engineering, and particularly relates to an ultra-wide-band low-profile phased-array antenna, which realizes broadband impedance matching characteristics and effectively expands the working bandwidth of the antenna by optimizing a dipole arm structure and introducing a matching branch knot and linear tapered slot composite structure on a radiation unit layer; on the array architecture level, an electromagnetic metasurface technology is adopted, array current distribution is improved through a periodic artificial electromagnetic structure, the active standing-wave ratio is remarkably reduced, the scanning angle of an array is widened, and meanwhile high compression of a system profile is achieved; on the structural design level, a three-dimensional composite structure of a transverse metal floor, a longitudinal radiation layer and a transverse metasurface layer is innovatively constructed, and the overall section height is reduced to 0.137 lambda Low (lambda Low is the lowest working frequency wavelength) through electromagnetic coupling and space folding technologies; in conclusion, the ultra wide band (the relative bandwidth is greater than or equal to 90%) and the low profile (lt; and the method is suitable for a new generation of broadband phased array radar system.

The invention belongs to the technical field of multifunctional radomes, and particularly relates to a frequency-agile absorption and transmission integrated electromagnetic metasurface and radome, the frequency-agile absorption and transmission integrated electromagnetic metasurface comprises a plurality of basic units in periodic array distribution, and each basic unit comprises a wave transmission layer and a wave absorption layer which are oppositely arranged; the wave-transparent layer comprises a wave-transparent dielectric substrate, a wave-transparent metal foil layer I and a wave-transparent metal foil layer II, wherein the wave-transparent metal foil layer I and the wave-transparent metal foil layer II are arranged on the two sides of the wave-transparent dielectric substrate. The wave-transparent metal foil layer I comprises a plurality of metal spiral lines, the wave-transparent metal foil layer II comprises a metal foil, and the metal foil is provided with an annular gap and rectangular gaps distributed around the annular gap; the wave-absorbing layer comprises a wave-absorbing dielectric substrate, and a wave-absorbing metal foil layer I and a wave-absorbing metal foil layer II which are arranged on two sides of the wave-absorbing dielectric substrate; according to the invention, the wave-transparent communication and wave-absorbing isolation functions are realized at the same time, the wave-absorbing frequency band agility function is realized, and the wave-absorbing effect is better.

The invention discloses an ultra-large octave wave absorber based on a photoconductive material, and belongs to the field of electromagnetic metasurfaces and metamaterials. Comprising a light response wave-absorbing metasurface and a light driving module capable of projecting different patterns on the surface of the light response wave-absorbing metasurface, array wave-absorbing units of different sizes are obtained on the light response wave-absorbing metasurface by switching the projected patterns, and impedance of a target frequency band is matched by changing equivalent capacitance / inductance of a wave-absorbing unit structure; the light driving module can project a preset light pattern on the light response wave-absorbing metasurface, so that the equivalent impedance distribution of the light response wave-absorbing metasurface is changed; according to the light response wave-absorbing metasurface, the conductivity distribution of the metasurface units is changed through light control, and the wave-absorbing frequency band is adjusted in real time, that is, dynamic adjustment of the wave-absorbing performance is achieved through non-contact light control. According to the invention, the limitation of narrow bandwidth and passive fixation of a traditional wave absorber is broken through, and electromagnetic wave control with ultra-large octave, high absorptivity and real-time reconfigurability is realized.

The invention discloses an intelligent metasurface design method fusing neural architecture search and multi-physics field coupling optimization. According to the method, a systematic process from high-dimensional parameter definition, coupling finite element simulation to multi-level agent model and multi-target genetic optimization is constructed: on one hand, complex coupling response of electromagnetic, mechanical and thermal fields is accurately described by means of a high-fidelity finite element means; and on the other hand, multi-layer neural network fast approximation and physical perception architecture search (Physics-Informed NAS) are combined, so that the dependence on expensive simulation during large-scale optimization is greatly reduced. Through multi-scale decomposition and a multi-target genetic algorithm (in combination with Pareto frontier analysis), balance is found between a global range and local details, and finally an efficient and flexible global optimization scheme is provided for multi-physics field collaborative design of the electromagnetic metasurface.

The invention discloses an electromagnetic metasurface sparse signal modeling method and device. The method comprises the steps that S1, sparse electromagnetic signals of an electromagnetic metasurface are acquired; s2, solving through signal sparse prior knowledge under the constraint of an electromagnetic constitutive equation to obtain a sparse signal distribution function; s3, according to the sparse signal distribution function, obtaining the coordinate system representation of the sparse signal in the Riemannian manifold space; and S4, according to the coordinate system representation of the sparse signal in the Riemannian manifold space, establishing a signal electromagnetic field manifold embedding model of the sparse signal mapped in the Riemannian space based on the electromagnetic metasurface. By the adoption of the technical scheme, the problems of an existing electromagnetic metasurface sparse signal modeling method in the aspects of algorithm efficiency, model adaptability and hardware collaboration are solved.

The invention discloses an electromagnetic metasurface unit for realizing high-efficiency generation and focusing of vortex beams, which comprises a dielectric layer in the middle, an upper conductive metal layer and a lower conductive metal layer, the upper conductive metal layer and the lower conductive metal layer are arranged on the upper surface and the lower surface of the dielectric layer, and the thicknesses of the two conductive metal layers are both greater than the skin depth. The line width of the arc is equal to the line width t of the rectangle, the left end of the rectangle is connected with the inner wall of the arc, the arc is vertically symmetrical relative to the rectangle, and the lower conductive metal layer and the upper conductive metal layer have the same structure and parameter and are symmetrical relative to the y axis; meanwhile, the invention also discloses an electromagnetic metasurface for realizing high-efficiency generation and focusing of vortex beams and a generation method of the electromagnetic metasurface. The laser has the advantages of being simple in structure, low in manufacturing cost, small in metal loss, high in transmissivity and good in focusing effect.

The invention relates to the technical field of dual circularly polarized antennas, and discloses a dual circularly polarized antenna, a sub-array, a one-dimensional phased array and a planar phased array. The antenna comprises a direct dual-circularly-polarized radiation structure layer, a circularly-polarized electromagnetic metasurface coupling layer and a circularly-polarized electromagnetic metasurface parasitic layer which are sequentially stacked from bottom to top. The broadband wide-angle scanning dual-circularly polarized phased array provided by the invention has the advantages of low cost, low profile, high radiation efficiency, broadband, dual-circularly polarized wide-angle beam scanning and the like, and is suitable for advanced satellite internet communication and navigation application.

The invention relates to the technical field of electromagnetic metasurfaces and bionic computing, and discloses a bionic information processing method and system based on an electromagnetic metasurface. The method comprises the following steps: S1, mapping DNA sequence information into a multi-dimensional coding state of the bionic metasurface information processing unit in an electromagnetic adjustable parameter space; s2, realizing co-evolution of the multi-dimensional coding state in space, frequency, phase and amplitude dimensions by dynamically regulating and controlling electromagnetic response parameters of the bionic metasurface information processing unit; and S3, using propagation and interference of electromagnetic waves in the diffraction neural network and a near-field coupling effect between the bionic metasurface information processing units to complete copying, logical operation and information read-write operation of the DNA sequence information. The functions of DNA coding, copying, logic calculation, information reading and writing and the like are uniformly mapped into the programmable electromagnetic metasurface platform, and cooperative processing of information in the aspects of space, electromagnetism and algorithm is achieved.

The invention discloses an electromagnetic metasurface unit structure optimization method based on constraint space mapping, and belongs to the technical field of electromagnetic metamaterial design. In order to solve the problems that in the prior art, constraint conditions are difficult to process in the metasurface unit structure optimization process, and optimization efficiency is low, the method mainly adopts the mode that multi-dimensional structure variables are mapped to a convex constraint space formed by inequality constraint conditions, and efficient optimization is carried out in combination with a multi-objective optimization algorithm. A structural variable vector is represented by using a direction vector and a proportionality coefficient, so that an initial solution generation process meeting complex constraints is simplified, and meanwhile, the global search capability of the algorithm and the convergence speed in a constraint space are improved. According to the method, the local optimal solution can be quickly converged under the complex constraint condition, and the Pareto optimal solution is effectively found, so that an efficient and accurate solution is provided for multi-objective optimization of the electromagnetic metasurface unit structure.

The invention discloses a radar detection method for an active electromagnetic regulation and control target. The method comprises the following steps: modeling a radar receiving echo signal after a radar transmitting signal is reflected by an electromagnetic metasurface arranged on a to-be-detected target; carrying out carrier frequency removal and frequency modulation preprocessing on the echo signal, and then carrying out phase unwrapping processing to obtain an absolute phase; performing windowing segmentation processing on the absolute phase, estimating the slope of each segmented phase, and taking the slope average value of the segmented phases as the slope estimation result of the absolute phase; constructing a phase distribution linear function by using the slope estimation result of the absolute phase, and subtracting the absolute phase from the phase distribution linear function to obtain a jump phase item estimation value of the electromagnetic metasurface; constructing a time domain phase compensation function according to the hopping phase item estimation value, and multiplying the time domain phase compensation function by the radar receiving echo signal to obtain a reconstruction signal; and performing matched filtering processing on the reconstructed signal to obtain an output signal.

The invention relates to an active electromagnetic metasurface for realizing a programmable topological polariton waveguide. The metasurface is formed by periodically extending basic function units and variable capacitance diodes in a two-dimensional plane; the basic function unit comprises two layers of media, four layers of metal and metalized via holes; by changing the applied bias voltage, reconfigurable topology transmission of the magnetic polarization excimer dispersion topology from an ellipse to a straight line and a hyperbolic curve can be realized; by means of wavefront characteristics under different dispersion topologies, adjustable field channelization and reconfigurable plate focusing functions and programmable topology polariton waveguide design can be realized. The device supports flexible propagation and guide control of surface waves, has the advantages of low dimensionality, real-time response, continuous controllability and high stability, provides an effective platform for active optoelectronic integrated circuit research, facilitates design of a plane integrated high-speed communication assembly, high-resolution imaging and a high-sensitivity sensing positioning system, and has wide application prospects. The method has wide application prospects in the fields of near-field information processing, energy collection and the like.

The invention discloses an amplitude-phase decoupling type metasurface, and relates to the technical field of electromagnetic metasurfaces. The invention aims to solve the problem that there is no amplitude-phase decoupling metasurface at present. The graphene composite board sequentially comprises a graphene adjustable structure, a foam board layer, a first metal patch, a second metal patch, a first substrate layer, a metal ground, a bonding layer and a second substrate layer from top to bottom, the graphene adjustable structure sequentially comprises a first lining plate layer, a first graphene layer, an ionic liquid layer, a second graphene layer and a second lining plate layer; the first metal patch and the second metal patch are arranged on the upper surface of the first substrate layer and are connected through the diode; a third square patch is further arranged on the upper surface of the first substrate layer, and the third square patch is connected with the second metal patch through an inductor; one end of the second metal conductive column is connected with the lower surface of the second substrate; the other end of the first metal conductive column is connected with the lower surface of the first metal patch. The invention is used for controlling electromagnetic waves.

The invention particularly relates to a two-dimensional wide-angle scanning phased array based on an electromagnetic metasurface, which comprises a radiation antenna and an electromagnetic band gap structure, the radiation antenna and the electromagnetic band gap structure are in coplanar design, the radiation antenna is positioned in the middle of the electromagnetic band gap structure, the upper layer of the electromagnetic band gap structure is metal with a hexagon and a rectangular branch, and the lower layer of the electromagnetic band gap structure is metal. The lower layer is the bottom of the dielectric substrate and is also made of metal, and the middle is a metalized via hole penetrating through the upper and lower layer metal. Wide beams are realized by utilizing leaky wave characteristics of an electromagnetic band gap structure and a left-right hand mode regulation and control line antenna beam in dispersion analysis, the whole antenna is of a planar structure and is only composed of a layer of dielectric substrate, the antenna array is arranged in a rectangular shape to form a two-dimensional antenna array surface, and the antenna has the characteristics of low profile, wide beam, wide angle scanning and low cost, and is suitable for large-scale popularization and application. And the structure is simple and the debugging difficulty is low.

The invention relates to the vehicle diagnosis technology, and discloses a vehicle chassis diagnosis method, device and system and a storage medium, and the method comprises the steps: obtaining vehicle working condition data and fault code data through a diagnosis connector; wherein the vehicle working condition data comprises the engine rotating speed; based on the rotating speed of the engine, the electromagnetic metasurface sensor is controlled to be switched to the corresponding electromagnetic scanning frequency band so as to conduct electromagnetic scanning on the vehicle chassis; receiving electromagnetic scanning data sent by the electromagnetic metasurface sensor, and positioning an abnormal area based on the electromagnetic scanning data; matching the electromagnetic characteristics of the abnormal region with a preset defect information template to determine defect information; and determining fault information of the vehicle chassis based on the vehicle working condition data, the fault code data and the defect information. According to the invention, non-contact high-precision detection of chassis structure abnormity can be realized.

The invention provides a curved surface polarization torsion reflecting surface and an antenna using the same, and belongs to the technical field of antennas. The curved surface polarization torsion reflection surface comprises a curved surface dielectric plate, and a metal bottom plate and an electromagnetic metasurface which are respectively arranged on the outer side and the inner side of the curved surface dielectric plate; the electromagnetic metasurface is formed by periodically arranging a plurality of single-layer electromagnetic metasurface units. The single-layer metasurface unit with the polarization torsion function is conformal on the curved surface, so that the technical problems that a traditional multi-layer planar polarization torsion structure is complex to process, curved surface conformal is difficult, and the performance is deteriorated after conformal are solved. The reflecting surface is preferably a paraboloid, so that the incident wave polarization torsion is realized, and the spherical wave can be converted into the plane wave to improve the antenna gain. The metasurface unit keeps good cross polarization reflection performance within the wide incidence angle range of 0-40 degrees, is suitable for curved surface conformal design, can be integrally formed through 3D printing, and is easy and convenient to machine and stable in performance.

The invention discloses a transparent transmission type metasurface array antenna which comprises a feed source oscillator and a transparent metasurface structure. The feed source oscillator is arranged below the transparent metasurface structure and is used for transmitting or receiving electromagnetic waves; the transparent metasurface structure comprises six layers of artificial electromagnetic metasurfaces stacked in parallel, each artificial electromagnetic metasurface comprises a transparent medium substrate and a metasurface array arranged on the upper surface of the transparent medium substrate, and the metasurface array comprises a plurality of conductive pattern units arranged periodically and is used for regulating and controlling the phase of transmission electromagnetic waves. According to the embodiment of the invention, phase regulation and control alignment can be carried out on electromagnetic waves without shielding light, and the method has efficient regulation and control capability on the wavefront of the electromagnetic waves, so that the indoor wireless signal intensity is enhanced, the cost and power consumption of large-scale antenna configuration are reduced, and the economical efficiency and practicability of an antenna system are improved.

Disclosed in the present application are a Huygens-metasurface-based transparent transmission unit and a manufacturing method therefor, and a Huygens-metasurface-based transparent transmission array. The unit comprises intermediate dielectric layers, a first metal layer, and a second metal layer. The array comprises a plurality of Huygens-metasurface-based transparent transmission units that are arranged in a rectangular layout. The method comprises: on the basis of the generalized Snell's Law, determining the phase distribution of a Huygens metasurface unit, and adjusting parameters of a double-arc structure, so as to obtain double-arc structure parameters; on the basis of the structure parameters, manufacturing metal layers and performing etching to make the metal layers form on surfaces of PET layers; and positioning a target on each PET layer, and by means of an optically clear adhesive, bonding onto glass the PET layers with the metal layers, so as to manufacture a transparent transmission unit. The embodiments of the present application can achieve high transmittance of electromagnetic waves and achieve easy deployment on existing windows, and extend the wireless-signal reception range in specific areas. The Huygens-metasurface-based transparent transmission unit and the manufacturing method therefor, and the Huygens-metasurface-based transparent transmission array, as provided in the present application, can be widely applied in the technical field of electromagnetic metasurfaces.

The application discloses a kind of phase electromagnetic metasurface design methods based on two-phase method, mainly solve the problem of electromagnetic metasurface structure complexity when existing technology electromagnetic metasurface is simultaneously regulated in amplitude phase.It is implementation scheme: initialization electromagnetic metasurface parameter;Electromagnetic metasurface unit required by two-phase method is calculated phase matrix;Design the electromagnetic metasurface unit including metal grating layer, two layers of dielectric layer and metal patch, and draw the phase table of the electromagnetic metasurface unit;According to the required phase of each unit of electromagnetic metasurface and the phase table of electromagnetic metasurface unit, the state of each unit of electromagnetic metasurface is adjusted to obtain adjusted electromagnetic metasurface;Feed horn is placed above adjusted electromagnetic metasurface, and radio frequency signal is added to feed horn, to generate required beam, complete phase electromagnetic metasurface design.The application can reduce the complexity of electromagnetic metasurface structure, improve the beam design capability of electromagnetic metasurface, and can be used for wireless transmission, communication system.

The application discloses a kind of reflection type mechanical drive intelligent electromagnetic super surface.The intelligent surface combines electromagnetic super surface and mechanical drive structure, breaks the limitation that traditional passive super surface is not reconfigurable and cannot be real-time regulated, compared with active super surface, no loss is introduced, with higher reflection efficiency.Based on the above advantages, the intelligent surface can realize beamforming and coverage enhancement of two orthogonal linearly polarized electromagnetic waves when electromagnetic wave is incident in free space.The intelligent surface responds to electromagnetic wave of specified frequency band through optimized square patch structure, and its dynamic adjustable property is realized by real-time control of three step motors driven adjustable metal backboard bidirectional movement through computer and control board output pulse signal.This polarization multiplexing reflection type mechanical drive intelligent surface has the characteristics of high efficiency, easy to process, real-time dynamic continuous adjustment, etc., and has application prospect in widening channel capacity and improving communication efficiency.

The application relates to an active electromagnetic metasurface for realizing programmable topology polariton waveguide, which is composed of basic functional units combined with varactor diodes and periodically extended in a two-dimensional plane; the basic functional unit comprises two layers of dielectric, four layers of metal and a metallized via; by changing the applied bias voltage, reconfigurable topology transmission of magnetic polariton dispersion topology from ellipse to straight line and hyperbola can be realized; by means of wavefront characteristics under different dispersion topologies, adjustable field channeling and reconfigurable flat panel focusing functions and programmable topology polariton waveguide design can be realized. The application supports flexible propagation and guiding manipulation of surface waves, has the advantages of low dimension, real-time response, continuous controllability and high stability, provides an effective platform for active optoelectronic integrated circuit research, is beneficial to the design of planar integrated high-speed communication components, high-resolution imaging and high-sensitivity sensing and positioning systems, and has wide application prospects in the fields of near-field information processing and energy collection.

The invention relates to the technical field of electromagnetic metasurface polarization, in particular to a wide-incidence-angle metasurface polarization converter with stable bandwidth, which is formed by periodically arranging a plurality of units, each unit comprises two dielectric plate layers and three metal layers, and the two dielectric plate layers are arranged among the three metal layers at intervals. The two metal via holes are formed in the two ends of the central axis of the top-layer metasurface, and each metal via hole penetrates through the upper-layer dielectric plate to be connected with the top-layer metasurface and the middle metasurface; according to the invention, the method of loading the metal via holes is utilized, the unit structure size of the device is greatly reduced, and the problem of poor performance stability of the device under the condition of a large incident angle is solved. Simulation results show that the linear polarization wave can be converted into the orthogonal polarization wave within the broadband range of 7.03-10.91 GHz, the polarization conversion rate (PCR) is larger than 90%, the device can keep high polarization conversion performance within the wide incidence angle of 48 degrees, and the bandwidth compression ratio when the PCR is larger than 90% is controlled within 6%.

The invention discloses a task target-based generative electromagnetic metasurface structure design method and system, relates to the technical field of electromagnetic metasurfaces, establishes a task target, and deduces characteristic frequency response amplitude and phase characteristics required by a metasurface according to different functions of the metasurface. And a conditional variation generation network model KAE network improved by a Kolmogorov-Arnold network is designed by guiding the task to serve as a structure generation network. And using the improved deep neural network model as a forward prediction network to predict frequency response amplitude and phase characteristics. The metasurface structure closest to the task feature is retrieved by quantitatively calculating the distance difference between the target frequency response amplitude and the target phase. The precision of the encoder and decoder network is improved, and the problem of edge oscillation caused by the Fourier low-frequency subspace is relieved. The problem that one-to-many mapping in a traditional neural network is difficult to train accurately is solved, and the method has the advantages of high precision, high design efficiency and the like.

The present invention discloses a method for designing a compact element for generating circular dichroism metasurface, which relates to the field of electromagnetic metasurface design, including: firstly, designing and determining the meta-atom unit structure according to the electromagnetic response characteristics of two kinds of handedness circularly polarized waves after passing through the unit structure, and the meta-atom phase compensation requirements; then ensuring the narrow distribution of the spectrum line in space, thereby determining the phase compensation distribution requirements of the left-handed circularly polarized wave and the right-handed circularly polarized wave; finally determining the combined distribution of the meta-atom unit, thereby designing a compact element for generating circular dichroism metasurface. The present invention can realize polarization testing and spectrum testing at the same time, and utilizes the arrangement of the meta-atoms to realize the narrow distribution of the spectrum line in space.

The application provides a device and method of fusing radar radio frequency induction and heterogeneous interface coupling technology, through an electromagnetic super surface pattern array antenna with metal characteristics on the inner surface of the heterogeneous interface, a fixed module is bonded around the electromagnetic super surface pattern array antenna, the fixed module and the electromagnetic super surface pattern array antenna jointly form a closed electromagnetic wave resonance cavity region, a high polymer medium material for radiating and conducting electromagnetic waves is built-in, and a radar radio frequency induction control system; electromagnetic waves emitted by a radar microstrip antenna are repeatedly reflected, superimposed and enhanced in the electromagnetic wave resonance cavity region through the high polymer medium material, and then radiated to an external space induction area of the heterogeneous interface through the electromagnetic super surface pattern array antenna, so that activities or micro-motion targets in the induction area range are detected, and a double threshold control logic output control instruction is adopted to improve the induction and control precision of the radar induction system.

The invention belongs to the technical field of microwave antennas, and particularly provides a tight coupling phased-array antenna based on a broadband efficient electromagnetic structure. The antenna comprises a broadband matching structure (I) which is an electromagnetic metasurface structure loaded on a broadband efficient electromagnetic structure; the radiation structure (II) is a broadband efficient electromagnetic structure; the feed structure (III) comprises a coaxial line, a gradient microstrip feeder line and a double-Y balun; and a floor (III). According to the invention, the broadband efficient electromagnetic structure is applied to the tightly-coupled antenna, which is equivalent to introduction of three currents in one unit aperture, so that the defect electromagnetic environment that only one current exists in one aperture when a traditional dipole antenna is cut off as an array element is made up, an infinite continuous current sheet model can be better simulated, and the antenna performance is improved. And therefore, a larger bandwidth and a lower profile can be realized. And meanwhile, the wide-angle scanning capability of the array is further improved by introducing the metasurface wide-angle matching.

The invention discloses a radiation and reflection integrated electromagnetic metasurface unit and an array thereof. The metasurface unit comprises a first dielectric substrate, a second dielectric substrate and a base structure formed by a PP layer located between the first dielectric substrate and the second dielectric substrate. A first metal layer is arranged on the upper surface of the first dielectric substrate, a metal floor layer is arranged between the first dielectric substrate and the PP layer, a second metal layer is arranged between the PP layer and the second dielectric substrate, and a third metal layer is arranged on the lower surface of the second dielectric substrate; by controlling the level of the direct-current bias line, the on-off state of the third PIN diode is further controlled to change the impedance matching state of the microstrip line and the gap, switching of the radiation reflection mode of the unit is achieved, and 2-bit reflection phase control is achieved in the reflection mode. The array comprises radiation and reflection integrated electromagnetic metasurface units which are arranged in an array mode, and each electromagnetic metasurface unit in the array can perform radiation and reflection mode switching by controlling the level of a corresponding direct current bias line so as to realize flexible regulation and control of electromagnetic waves; and the electromagnetic wave control capability can be well realized at 3.5 GHz, and the reflection efficiency is high.

The application relates to the field of electromagnetic super technology, in particular to a metasurface structure design method based on a joint discriminant generative adversarial network, a periodic arrangement of a metasurface unit structure and related parameters is designed, and is input into electromagnetic simulation software to obtain electromagnetic response, a forward prediction data set and a reverse design data set are constructed; the forward prediction data set and the reverse design data set are respectively divided into a training set and a test set; a forward prediction network model is constructed, the forward prediction data set is sent into a simulator network Simulator used for forward prediction to perform training, and the forward prediction network model parameters are fixed after the training is completed. The application adds a pre-trained forward prediction network and a discriminator network for discriminating spectral similarity into a reverse design network, so that the network can well understand the relationship between structure design and overall optical response, more attention is paid to the absorption spectrum of the generated structure, new design can be generated, and the application can be extended to analyze other metasurface structures.

The invention discloses a rectification antenna module and electronic equipment, and belongs to the technical field of communication. The rectification antenna module comprises a communication antenna array, a rectification module, a first dielectric plate, a second dielectric plate, a grounding layer, a feed module and a DC filtering module. The communication antenna array and the rectifier module are arranged on two opposite sides of the first dielectric plate, and the second dielectric plate is clamped between the rectifier module and the grounding layer; the communication antenna array comprises n antenna units, and each antenna unit is electrically connected with the feed module; the rectifier module comprises m first electromagnetic metasurface units, p second electromagnetic metasurface units and x rectifier diodes; the first electromagnetic metasurface units and the second electromagnetic metasurface units are arranged alternately, and any two adjacent first electromagnetic metasurface units and second electromagnetic metasurface units are electrically connected through a rectifier diode; a grounding point on the first electromagnetic metasurface unit is electrically connected with the grounding layer; the DC filtering module is electrically connected with the rectification module.

The present invention provides an absorbing metamaterial, comprising an electromagnetic metasurface material and a first electromagnetic absorbing material and an impedance matching material superimposed on the front and back surfaces of the electromagnetic metasurface material. The electromagnetic metasurface material is a series connection of a capacitor and an inductor in the equivalent circuit of the absorbing metamaterial, and the first electromagnetic absorbing material and the impedance matching material are both resistors in the equivalent circuit of the absorbing metamaterial. One or more metal microstructures are respectively provided in one or more regions of the electromagnetic metasurface material. In addition, the present invention also provides an absorbing structural part and a mobile carrier. The technical solution provided by the present invention can adapt to complex external electromagnetic environments. By combining the electromagnetic metasurface material with a functional absorbing substrate, the present invention changes the absorption frequency of the absorbing functional structure in response to dynamic changes in the electromagnetic interference frequency, thereby effectively improving the electromagnetic compatibility and anti-interference performance in complex electromagnetic environments.