34 results about "Microwave band" patented technology

The invention provides an all-dielectric film system structure with visible near-infrared low transmission vegetation simulation, intermediate infrared high reflection and microwave high transmission. The device sequentially comprises, from top to bottom, a visible near-infrared simulated vegetation layer which is composed of first to fourth dielectric layers and is configured to simulate vegetation reflection spectrum characteristics in a wave band of 380-2500 nm and has a low transmission characteristic; the intermediate infrared high-reflection layer is formed by alternately stacking a first dielectric layer and a third dielectric layer, and is configured to form high reflection in a wave band of 3-14 microns; and a substrate layer; the thickness of the whole film layer is far smaller than the microwave wavelength, so that the film system keeps high transmission in the microwave band. According to the invention, the amorphous InSb material with high loss characteristic in visible near-infrared light is introduced, so that the average transmissivity of 1500-2500 nm is reduced to 0.095 while high-precision simulation of the vegetation reflectivity spectrum is realized, thereby realizing simulation of low transmissivity of the wave band vegetation.

The application relates to the technical field of infrared stealth, precise thermal control and electromagnetic compatibility, and particularly discloses a film system structure with visible ultra-high reflectivity, middle-infrared and far-infrared low emissivity and microwave high permeability; the medium stack layer has high reflectivity to visible light; the metal microstructure layer has low emissivity to middle-infrared and far-infrared light and high permeability to microwaves; the film system structure has visible light reflectivity greater than 60%, middle-infrared and far-infrared light emissivity lower than 30% and microwave permeability higher than 60%. The application realizes perfect compatibility of infrared stealth and microwave absorption, keeps infrared low emissivity (epsilon < 0.1) and realizes high permeability (greater than 95%) to 1-18GHz microwave bands. The application solves the thermal failure problem of the composite stealth structure, realizes average visible light reflectivity (greater than 95%) through the medium stack layer, greatly reduces the solar heat load and improves the overall optical performance.

This invention discloses a visible transparent, ultra-wideband microwave absorption structure, comprising, from top to bottom, a visible transparent spatial shielding layer, an impedance-gradient absorption layer, and a total reflection bottom layer. The spatial shielding layer is highly transparent to the microwave band. The impedance-gradient absorption layer is composed of multiple layers of low-dielectric-constant transparent dielectric substrates and an array of transparent conductive patterns disposed thereon, stacked alternately. The total reflection bottom layer is totally reflective to the microwave band. By precisely designing the gradient period and equivalent resistance of the multilayer transparent conductive pattern array, and utilizing the electromagnetic coupling and multi-point resonance mechanism of the upper and lower layers, this invention achieves ultra-wideband microwave strong absorption of more than 90% in the 1-40 GHz frequency band at the subwavelength scale, breaking through the bandwidth limitation bottleneck of traditional microwave absorbing structures; and it also possesses excellent visible light transparency characteristics.

The application discloses a visible light-infrared-microwave compatible imaging metasurface, and relates to the technical field of electromagnetic compatibility, which comprises a surface infrared emission layer, an intermediate microwave functional layer and a reflective backboard; the surface infrared emission layer is attached to the lower surface of the intermediate microwave functional layer, and the reflective backboard is attached to the lower surface of the intermediate microwave functional layer; the surface infrared emission layer comprises two kinds of frequency selection surface structures with different duty cycles; the microwave functional layer is in a circular arc structure; a picture is attached to the bottom of the reflective backboard; by combining the surface infrared emission layer, the intermediate microwave functional layer and the reflective backboard, the false image effect can be generated in the visible light, infrared and microwave bands simultaneously, and the problem that the conventional metasurface is difficult to realize multi-spectrum compatibility is solved.

This invention relates to the field of optical imaging technology, specifically providing an optical radar co-aperture off-axis imaging system, comprising: an off-axis mirror assembly, a frequency-splitting device, a radar transceiver system, and an optical imaging system. The frequency-splitting device is disposed in the rear optical path of the secondary mirror and is used to reflect light waves and transmit microwaves. The frequency-splitting device includes a frequency-selective surface, which comprises an FSS pattern layer and a bias line layer. The FSS pattern layer includes periodically arranged FSS units. Nonlinear capacitors are electrically connected to the FSS units. The bias line layer applies a voltage to the nonlinear capacitors according to the received microwave band. By changing the voltage applied to the nonlinear capacitors, the resonant frequency of the FSS units is tuned, thereby changing the microwave passband frequency of the frequency-splitting device. This invention not only achieves a reflective wave-transmitting microwave design but also solves the problem that transmitting only a single band of microwaves in microwave-transmitting and light-reflecting methods is difficult to adapt to different task requirements.

The invention discloses a cereal crushing impurity detection method and device based on a spectral imaging and deep learning hybrid network, belongs to the technical field of spectral analysis, and realizes accurate sparse selection of spectral features by constructing a feature wavelength extraction method with microwave band gating and physical prior constraint. By combining importance sorting and grouping fusion of the multi-dimensional characteristic wave bands, the effectiveness of the spectral characteristic image is improved; a detection model is constructed by taking lightweight GrainCINet as an encoder and layer-by-layer up-sampling fusion as a decoder, a multi-target parameter optimization strategy combining grid search preliminary screening with Bayesian iterative optimization is adopted, detection result comprehensive identification is carried out through category voting, on the basis, the crushing and impurity-containing condition of a sample is calculated through category pixel density and proportion, and the detection accuracy is improved. Finally, efficient, accurate and robust detection of the crushed grains and impurities of the grains is achieved, and the actual application requirements of grain quality detection are met.

The invention provides a flexible cross-band compatible electromagnetic camouflage metasurface and a preparation method thereof, and the metasurface achieves high-absorptivity electromagnetic camouflage of visible-infrared bands through a micro-nano feature structure formed by a metal-dielectric material, and achieves high transmittance in a microwave band through the design of gaps of periodic patterns. The preparation method comprises the following steps: preparing the cross-band compatible electromagnetic camouflage structure on a hard substrate, and transferring the cross-band compatible electromagnetic camouflage structure to a flexible substrate through wet stripping or laser stripping and other processes. According to the invention, a visible-infrared wave-absorbing structure and a microwave transmission structure are organically integrated to form a cross-band compatible electromagnetic camouflage function layer, and the cross-band compatible electromagnetic camouflage function layer can be transferred to a flexible substrate to realize conformal fitting of complex curved surfaces such as a radome.

The application is a high degree of freedom far-field customized compact circularly polarized planar lens antenna. The application relates to the technical field of radiative metasurface antennas. Due to the limitation of space feed, it is difficult for metasurfaces in the microwave band to be applied to integrated systems. Here, the application realizes precise far-field radiation mode manipulation. Two E-shaped unit superimpositions constitute a geometric phase-based metasurface unit, realizing 2pi range transmission phase coverage and high transmittance. The application method realizes highly customized far-field mode control. Several proof-of-concept RTM prototypes are designed and manufactured, realizing energy-controllable multi-beam, wide-angle deflection and customized beamforming. Simulation and experimental results verify that the proposed method and RTM structure can provide a compact wavefront modulation platform and realize highly accurate and customized far-field beamforming.

The application is suitable for the field of silicon-based radio frequency and millimeter wave integrated circuit technology, and provides a satellite distributed configuration numerical control unit, a micro single sheet and an antenna unit, which comprises a decoupling capacitor module, a main control module and a distributed satellite module; the positive electrode of the decoupling capacitor module and the power supply pin of the main control module are connected with the power supply pin of the numerical control unit, and the negative electrode of the decoupling capacitor module and the ground pin of the main control module are connected with the ground pin of the numerical control unit; the distributed satellite module comprises a first satellite sub-module, a second satellite sub-module, a third satellite sub-module and a fourth satellite sub-module, and the connection mode of the first satellite sub-module with the main control module, the connection mode of the second satellite sub-module with the main control module, the connection mode of the third satellite sub-module with the main control module and the connection mode of the fourth satellite sub-module with the main control module are the same. The numerical control unit has the bandwidth universality suitable for various microwave bands and the universality suitable for various semiconductor manufacturing processes.

The invention belongs to the technical field of microwave frequency selective surface and infrared reflection focusing composite metasurface structures and design. A unit of a microwave band adopts a layered structure of metal pattern-ceramic dielectric-air gap-silicon substrate. The metal pattern is a miniaturized design of a three-order nested square patch, and the unit period is only 0.164 times of the working wavelength. According to the invention, a passive factor of a silicon substrate of an infrared band and an air gap generated by actual processing are creatively converted into an active design degree of freedom, and through collaborative optimization, a transmission coefficient higher than 0.99 at a center frequency of 15GHz, a-1dB bandwidth greater than 30%, and excellent angle stability under oblique incidence of 0-45 degrees are realized. The unit reflectivity of the infrared band is higher than 99% and close to 1, phase modulation can be achieved, and the infrared metasurface has a convergence function. The device is simple in structure and easy to integrate, and a new scheme is provided for realizing a function integrated device of microwave and infrared bands.

One embodiment of the present invention provides a method for manufacturing an electromagnetic wave absorbing material, the method comprising: a step of mixing a powder containing at least one selected from the group consisting of a Ca precursor, a Ba precursor, a Sr precursor, an Re precursor, an Me precursor, a Co precursor, and an Fe precursor; a step for performing a first heat treatment on the mixed powder; a step of ball-milling the powder after the heat treatment; and a step of performing a second heat treatment on the powder after the ball milling, thereby manufacturing an electromagnetic wave absorbing material including W-type hexagonal ferrite represented by the chemical formula 1. The present invention is a research result of a development subject of a microwave absorber for 5G communication (28GHz), which is supported by the Chang star (strain) and is executed by a first university production and study association group.

The application discloses a full dielectric film system structure of visible near-infrared low-transmission simulated vegetation, mid-infrared and microwave high-transmission, which comprises, from top to bottom, visible near-infrared simulated vegetation and a mid-infrared high-transmission layer and a substrate layer. The visible near-infrared simulated vegetation and the mid-infrared high-transmission layer are obtained by alternately stacking a first dielectric layer, a second dielectric layer, a third dielectric layer and a fourth dielectric layer, and the film layer close to the substrate layer is the fourth dielectric layer. The structure not only realizes high-spectrum simulation for vegetation in the 380-2500 nm wave band, but also maintains high transmission in the 3-5 mu m and 8-14 mu m wave bands, and has high transmission in the microwave wave band. The full dielectric film system structure of the application can also be compatible with other infrared regulation layers due to the infrared high-transmission characteristics, and the potential application extension of the film system is improved.

The present application relates to the technical field of electronic information functional ceramic materials and electronic devices, and particularly relates to a method for forming dielectric ceramic by microwave rapid annealing treatment, which comprises the following steps: (1) sample pretreatment, (2) microwave annealing, (3) cooling and discharging. The present application breaks through the limitation of heat damage caused by traditional process, and realizes the repair of non-intrinsic defects and intrinsic defects in the ceramic body by high-power microwave second-level transient annealing under the premise of completely maintaining the original grain size, crystal structure and phase composition of the ceramic, thereby fundamentally avoiding the problems of abnormal grain growth and volatilization of low-melting-point components, and realizing the lossless and rapid repair of defects of the formed dielectric ceramic. The processing period of traditional annealing lasting for several hours is shortened to 1-10 s, the process time is greatly shortened, and the quality factor Qxf of the dielectric ceramic after treatment is improved by 30%-100% in the terahertz band, and the quality factor Qxf is improved by 30%-60% in the microwave band.

The invention belongs to the field of wave-absorbing materials and electromagnetic protection materials, and particularly relates to a perovskite material with microwave absorption and radiation heat dissipation functions and a preparation method and application thereof. The perovskite material provided by the invention has a chemical formula shown as the following: Sr < x > Co < y > M < z > On, m is one or more of La, Ce, Sm, Gd, Er and Lu; 0.2 < = x < = 1.2; 0.2 < = y < = 1.0; z is 0 < = z < = 0.2; 1 < = n < = 3. The perovskite material disclosed by the invention has an adjustable strong absorption characteristic in a microwave frequency band of 1-18GHz, the spectral emissivity of the perovskite material in an infrared band of 1.5-25mu m at room temperature is greater than 90%, the perovskite material shows the characteristics of high infrared emissivity and low microwave reflection loss, and the perovskite material can still keep stable performance at high temperature; the material has wide application prospects in thermal management and electromagnetic protection materials of mobile communication base stations and wave-absorbing materials of aerospace crafts.

To obtain a radio wave absorber that exhibits excellent radio wave absorption performance in the microwave band and can suppress the shedding of metal particles constituting the radio wave absorber compared to conventional materials. [Solution] The radio wave absorber 1 comprises a glass matrix 2 that maintains its shape and soft magnetic metal particles 3 that have radio wave absorption performance in the microwave band due to magnetic loss, and is made of a composite material in which the soft magnetic metal particles 3 are dispersed in the glass matrix 2. The average particle size of the soft magnetic metal particles 3 is 1 μm or more and less than 10 μm. The ratio of the volume of the soft magnetic metal particles 3 to the sum of the volumes of the soft magnetic metal particles 3 and the glass matrix 2 is 0.3 or more and 0.45 or less.

The application discloses a SiBOC ceramic-based wave-absorbing metamaterial and a preparation method thereof. The SiBOC ceramic-based wave-absorbing metamaterial is composed of a plurality of unit structures arranged in parallel, the unit structure is a hollow spherical polyhedron with vertical holes on the upper and lower surfaces, and the preparation method comprises the following steps: drawing a model of the SiBOC ceramic-based wave-absorbing metamaterial, preparing a SiBOC ceramic-based wave-absorbing metamaterial blank through 3D printing, and then high-temperature cracking after solidification. The application uses a photosensitive ceramic precursor as a raw material, realizes high-precision preparation of the SiBOC ceramic-based wave-absorbing metamaterial with a full-dense complex structure through a DLP 3D printing process, has the advantages of rapidness, high efficiency and low cost, and the prepared wave-absorbing metamaterial has obvious wide-frequency wave-absorbing performance in a microwave band, the wave-absorbing performance is insensitive to polarization, and stable wave absorption can be realized within a wide range of incident angles, and the wave-absorbing performance has high stability.

The invention discloses a multispectral all-dielectric common-caliber metasurface and a design method thereof, the metasurface comprises a dielectric structure functional layer and an infrared transparent substrate layer which are sequentially stacked from top to bottom, and the dielectric structure functional layer comprises a substrate formed based on a dielectric material and a plurality of sub-wavelength unit structures. Impedance matching of a microwave band is realized by optimizing the thickness combination of the infrared transparent substrate layer and the substrate, and high transmittance is obtained; and meanwhile, focusing phase modulation of an infrared band is realized by designing geometric parameter distribution of the sub-wavelength unit structure array. According to the invention, an all-dielectric structure is adopted, the microwave transmission performance and the infrared focusing performance are respectively optimized by using an equivalent circuit model and an angular spectrum method, the integration problem caused by microwave and infrared wavelength difference is solved, and a microwave-infrared common-aperture sensing architecture is realized. The metasurface has the advantages of ultra-thin plane, easy integration and batch preparation, and can be used for automatic driving, target detection and other multispectral fusion sensing systems.

The invention belongs to the technical field of semiconductor photoelectric integration, and discloses a preparation method of a three-dimensional graphene film photoelectric detector, a three-dimensional graphene film keeps the characteristics of zero band gap and high light absorption of graphene, has the characteristic of wide spectrum absorption, and can realize effective absorption from ultraviolet to infrared to microwave bands. The three-dimensional graphene thin film has a rough surface and a three-dimensional porous internal structure, the utilization rate of light can be greatly improved, efficient migration of carriers can be achieved through construction of a three-dimensional network, oxygen defects existing in a system can promote separation of photo-generated electron hole pairs and limit photo-generated holes, and therefore the obvious optical gain effect is generated, and the photoelectric conversion efficiency is improved. The photoconductive effect is enhanced, and larger photocurrent is obtained.

The application provides a bridge structure remote deformation and vibration measurement method and system based on microwave sensing, comprising the following steps: S1, estimating the position of the measured target by using imaging information; S2, phase-modulating the transmission signal of the transmission antenna according to the position of the measured target; S3, mixing the signal reflected by the target with a local oscillation signal and performing low-pass filtering to obtain a multi-channel baseband signal, and obtaining the deformation displacement information of the measured target through demodulation processing; and S4, extracting the deformation displacement information of the measured target through cyclic measurement. The application provides a high-integration, convenient-to-operate, and large-field-of-view monitoring method and system suitable for bad environments such as rainy and foggy days for bridge monitoring. The application arranges multiple transmitter antennas to synchronously transmit radio frequency signals, which are used for beam synthesis and scanning, so as to improve the energy and signal-to-noise ratio of the target reflected signal and realize long-distance measurement of the bridge based on the microwave band.

The invention discloses an omnidirectional cascaded SIW edge-emitting MIMO antenna, which comprises a basic omnidirectional antenna structure formed by a metal ground, a dielectric substrate, a circular metal patch and a dielectric resonator, a circular metal patch concentric with the circular metal patch is also arranged on the dielectric substrate, and the circular metal patch and the circular metal patch are matched with the metal ground to form an annular substrate integrated waveguide structure; the annular substrate integrated waveguide structure is divided into a plurality of SIW cavity units through long metallization notches, each SIW cavity unit is divided into a plurality of small SIW cavities through short metallization notches, short-circuit metal through holes are formed in the SIW cavity units, and SIW feed ports are configured on the small SIW cavities. The cascaded SIW cavity units and the microwave-band horizontal omnidirectional antenna share the ground, high integration level and high isolation are achieved, cascaded series paths and parallel branches form an in-phase superposition-anti-phase counteracting controllable mechanism, the bandwidth can be effectively widened through short-circuit through holes, and frequency band expansion can be achieved on the basis of the omnidirectional antenna.

This invention provides a NiSiAlGd microwave absorbing material and its preparation method, relating to the field of microwave absorbing materials technology. The molecular formula of the NiSiAlGd microwave absorbing material is Ni... x Si 49.6 Al 5.4 Gd y The composition of the absorbing material is 37 < x ≤ 45 and 0 ≤ y ≤ 8. This absorbing material can absorb electromagnetic waves in the 2~18 GHz microwave band, with a wide effective absorption bandwidth and high absorption efficiency (>90%). The absorbing material has excellent thermal stability. At the same time, this invention provides a method for preparing the NiSiAlGd absorbing material mentioned above. The absorbing material can be obtained by arc melting, heat treatment and ball milling. The synthesis process is simple and suitable for large-scale industrial production.

The present application provides a kind of sea surface foam thickness remote sensing inversion method and system, for the L-Ka dual-band of sea surface foam coverage, foam thickness is cooperatively inverted, from the multi-band microwave radiation transmission characteristics, utilize the radiation characteristic difference of foam layer under different frequencies, establish the foam brightness temperature prediction model based on microwave band, the model considers the emission and scattering characteristics of the medium in foam layer, the emissivity of different thickness foam layer is calculated using radiation transfer equation.Then, the quantitative relationship between foam thickness and sea surface wind speed is established, by coupling sea surface foam model and wave spectrum model, sea surface foam coverage, thickness inversion is realized.The method and system provided by the present application can break through the limitation of traditional hydrodynamic model, realize large-scale, high spatio-temporal resolution observation of sea surface foam thickness, provide a new observation method for in-depth understanding of sea-air interface dynamics process.

The invention relates to the technical field of non-contact humidity sensors, and discloses a non-contact microwave humidity sensor based on a dielectric material echo wall mode, the non-contact microwave humidity sensor comprises a resonant cavity base and a top cover connected with the top of the resonant cavity base, and the resonant cavity base and the top cover jointly define an electromagnetic shielding cavity; the ring resonator is made of a low-loss dielectric material; the support frame is supported in the ring resonator and is connected with the bottom wall of the resonant cavity base; according to the sensor, a mature high-Q-value WGM principle of an optical wave band is combined with sensing application of a microwave wave band, intrinsic advantages of a low-loss dielectric material and an evanescent field sensing mechanism are creatively utilized, millisecond-level ultrafast response is achieved, the risk of performance degradation or failure of a sensitive coating is eliminated, and the application range of the sensor is widened. Tiny loss disturbance can be effectively identified, and the detection precision is improved.

The application provides a FeSiAlGd wave-absorbing material and a preparation method thereof, and relates to the technical field of microwave absorbing materials. x Si 29.6 Al 5.4 Gd y , wherein 57 < x < 65 and 0 < y < 8; the wave-absorbing material of the composition can absorb electromagnetic waves in a 2-18GHz microwave band, has a wide effective absorption band, high absorption efficiency (more than 90%), and excellent thermal stability; meanwhile, the application provides a preparation method of the FeSiAlGd wave-absorbing material, which can obtain the wave-absorbing material through arc melting, heat treatment and ball milling, and the synthesis process is simple and suitable for large-scale industrial production.

The application provides a non-Hermite super surface and a construction method thereof, the non-Hermite super surface comprising a composite layer and a complementary layer coupled with the composite layer, a medium layer being arranged between the composite layer and the complementary layer; the composite layer is hollowed out to be provided with a plurality of hollow cylinders; the complementary layer is hollow at positions corresponding to solid portions of the plurality of hollow cylinders. By adjusting the structural parameters and selecting the material types, the composite layer and the complementary layer are coupled, so that the device realizes the influence on the reflection of the incident electromagnetic wave in the microwave band, and by changing the conductivity of the cited vanadium dioxide in the composite layer, the non-Hermite super surface appears singular points at two different frequency points, realizes the regulation and control of the non-Hermite super surface, effectively widens the application range of the non-Hermite super surface, and is more conducive to realizing the functionalization, device integration and application of the non-Hermite super surface.

The application relates to the technical field of non-contact humidity sensors, and discloses a non-contact microwave humidity sensor based on a dielectric material whispering gallery mode, which comprises a resonant cavity base and a top cover connected to the top of the resonant cavity base, and the resonant cavity base and the top cover jointly form an electromagnetic shielding chamber; further comprising a ring resonator made of low-loss dielectric material, a support frame supported in the ring resonator and connected to the bottom wall of the resonant cavity base; the sensor combines the mature high-Q value WGM principle of the optical wave band with the sensing application of the microwave wave band, creatively utilizes the intrinsic advantages and evanescent field sensing mechanism of the low-loss dielectric material, realizes millisecond-level ultrafast response, eliminates the risk of performance attenuation or failure of the sensitive coating, can effectively identify slight loss disturbance, and improves the detection precision.

The invention discloses a visible and infrared compatible MXene-based microwave band frequency selective surface, the frequency selective surface comprises an array formed by a plurality of units with the same structure, each unit is formed by a conducting layer and a dielectric layer, the units are in a regular hexagon shape, the array is formed by closely arranging regular hexagons at certain intervals, and the number of the regular hexagons is two. The conducting layer is made of MXene, and the proportion of the area occupied by the conducting layer to the overall size of the unit is 80.2%-92.6%. The visible and infrared compatible MXene-based microwave band frequency selective surface provided by the invention has the advantages of low infrared emissivity, low visible light reflectivity, high microwave transmittance, angle stability and the like, is light and thin, and has relatively high cost benefits.

This invention discloses a patterned reflective film and its fabrication process, belonging to the field of optical functional thin film technology. The reflective film includes a substrate layer and a reflective layer. The reflective layer is patterned to form a discontinuous reflective pattern, which includes reflective units separated by light-transmitting regions. The linewidth of the light-transmitting regions is 3-10 micrometers, and the reflective pattern can be a random grid or a gradient pixel array. This invention, by precisely designing the geometric distribution of reflective units and light-transmitting regions at the micrometer scale, utilizes the significant difference between microwave and visible light wavelengths to achieve high reflectivity in the visible light band and high transmittance in the microwave band. This fundamentally solves the contradiction between metallic decorative finishes and wireless signal transmission. The random or gradient pattern design effectively avoids moiré patterns with display pixels. The blackening process on the copper reflective layer surface can achieve various decorative colors such as blue, red, and black. This reflective film has a high yield and wide application.

The invention discloses a visible near-infrared low-transmission simulated vegetation and mid-infrared and microwave high-transmission all-dielectric film system structure. The all-dielectric film system structure sequentially comprises visible near-infrared simulated vegetation, a mid-infrared high-transmission layer and a substrate layer from top to bottom. The visible near-infrared simulation vegetation and the intermediate infrared high-transmittance layer are obtained by alternately stacking a first dielectric layer, a second dielectric layer, a third dielectric layer and a fourth dielectric layer, and the film layer close to the substrate layer is the fourth dielectric layer. The structure disclosed by the invention not only realizes hyperspectral simulation aiming at vegetation in a 380-2500nm wave band, but also keeps high transmission in wave bands of 3-5m and 8-14m, and has high transmissivity in a microwave wave band. The all-dielectric film system structure can be compatible with other infrared regulation and control layers due to the infrared high-transmittance characteristic, so that the potential application expansibility of the film system is improved.

The invention discloses a radar and infrared compatible stealth composite material with an infrared camouflage function, and belongs to the technical field of multi-spectrum compatible stealth. The radar infrared compatible stealth composite material sequentially comprises a top coding layer, a first dielectric layer, a second dielectric layer, a conductive reflecting layer and a third dielectric layer from top to bottom in the electromagnetic wave propagation direction. The top coding layer comprises a plurality of zero patch large units and one patch large unit; the zero patch large unit and the first patch large unit from top to bottom respectively form a zero coding unit and a first coding unit together with the dielectric layer and the reflecting layer below the zero patch large unit and the first patch large unit from top to bottom along the electromagnetic wave propagation direction; and array structures are formed according to coding patterns generated by a multi-objective optimization algorithm. The zero coding unit and the one coding unit are arranged, an infrared camouflage pattern matched with complex background thermal radiation characteristics is constructed in an infrared band, and the reflection phase difference between the two coding units is utilized in a microwave band, so that the radar cross section is reduced, and radar infrared compatible stealth is completed.