76 results about "Radiation zone" patented technology

The invention provides a cloud atmosphere high-fidelity vector radiation simulation method based on physical constraints. The method comprises the following steps: A1, generating cloud layer micro-physical parameters by a WRF model; a2, integrating simulation parameters generated in the step A1, and inputting the simulation parameters into an MYSTIC model for three-dimensional radiation transfer simulation; a3, constructing a PC-GAN (U-Net + + + differentiable radiation layer + double-branch discriminator) physical constraint generative adversarial correction network, and defining adversarial loss, physical loss and KL divergence loss; a4, simulation data are input into PC-GAN, CALIPSO, PLODER3 and other actual measurement data are compared with the simulation data to calculate loss, physical loss is fed back, and cloud micro physical parameters are iteratively optimized until RMSElt is radiated; 5%; a5, backfilling the cloud layer micro-physical parameters corrected in the step A4, carrying out MYSTIC model radiation transfer simulation again, and carrying out satellite / foundation verification; and A6, outputting high-fidelity radiation simulation data. The method can be widely applied to meteorological satellite data verification, climate model development, cloud characteristic inversion and remote sensor design, and has the technical advantages of high precision and high efficiency.

The invention relates to the technical field of electrothermal film preparation, in particular to an electrothermal film energy-saving heating method and system based on far infrared radiation, and the method comprises the steps: obtaining a plurality of historical electrothermal films and a current slurry feature group according to a current slurry component set and a storage electrothermal film set, and obtaining an original solid content data set of the historical electrothermal film set, obtaining a training feature data set based on the current feature parameter set and the original solid content data set, training a neural network by using the training feature data set to obtain a solid content selection model, and inputting the current feature parameter set into the solid content selection model to obtain an optimal solid content. And preparing current coating slurry based on the optimal solid content and the current slurry component set, preparing a coating base material according to the current coating slurry, and heating and drying the coating base material by using a multi-section temperature zone drying furnace to obtain the radiation layer film material. The coating efficiency in the electrothermal film preparation process can be improved, and the energy consumption in the drying process can be reduced.

The present disclosure provides a holographic antenna, a beam control method thereof, a storage medium and an electronic device, and belongs to the technical field of antennas. The present disclosure can solve the problem that the existing antenna structure is complex and the polarization direction is not variable. The holographic antenna comprises a dielectric substrate, a radiation layer and a plurality of switch units. The radiation layer is provided with a plurality of slit openings. The switch units are arranged correspondingly to the slit openings. The holographic antenna further comprises an acquisition unit configured to acquire a target wave and a polarity of the target wave; a construction unit configured to construct a reference wave based on the polarity of the target wave; a calculation unit configured to calculate an interference wave based on the reference wave and the target wave; a sampling unit configured to obtain an excitation sampling value of each slit opening; and a control unit configured to control the switch units to control the switching state of the slit openings. The present disclosure can realize dynamic reconfiguration of different polarizations by using the holographic principle combined with a slot antenna.

The utility model discloses a waveguide antenna and a radar, and the waveguide antenna comprises a radiation layer which is provided with a first surface, a solder resist part is formed at a preset position of the first surface, and a welding area is formed in the solder resist part; the signal transmission layer and the radiation layer are arranged in a stacked mode in the first direction, the signal transmission layer is provided with a second surface, and a gap space is formed between the second surface and the first surface; the soldering tin layer is arranged in the gap space and provided with a first end and a second end in the first direction, the first end of the soldering tin layer is connected to the welding area, and the second end of the soldering tin layer is connected to the second surface. According to the utility model, the solder resist part is arranged on the radiation layer and is used as a reference mark, and the alignment between the radiation layer and the signal transmission layer can be ensured to be more accurate by accurately controlling the position and the shape of the solder resist part, so that the high-precision positioning requirement of the radiation layer and the signal transmission layer of the waveguide antenna is met.

The invention discloses a wave-absorbing metasurface low-profile wide-angle RCS (radar cross section) reduction tight coupling dipole antenna. The array is composed of a radiation layer, a middle layer, a wave-absorbing metasurface layer and a metal ground layer. The top layer of the radiation layer is a dipole antenna, and the tail ends of radiation arms of the dipole antenna are loaded with coupling patches through metal through holes; the middle layer is a dielectric substrate; the top layer of the wave-absorbing metasurface layer is a pair of symmetrical trident-shaped resistive films loaded with metal through holes, and the bottom layer of the wave-absorbing metasurface layer is a dielectric substrate; the metal ground layer is located at the lowermost layer. According to the invention, the wave-absorbing metasurface is embedded in the tight coupling dipole array antenna to replace a traditional metal ground, so that a low-profile structure is realized. According to the antenna, within the frequency band of 7-14 GHz, the wave absorbing efficiency is higher than 75% when electromagnetic waves are incident at the wide angle of 0-60 degrees, meanwhile, good radiation performance and wide-angle scanning capacity are kept, and the radar cross section is remarkably reduced. The method can be popularized to the low radar cross section design of a traditional antenna, and is suitable for radar and wireless communication systems.

The application discloses a kind of vehicle-mounted UWB-AOA circular polarization high-precision positioning antenna, it is related to vehicle antenna positioning technical field.The vehicle-mounted UWB-AOA circular polarization high-precision positioning antenna includes: dielectric substrate and radiation layer, and the feed layer below radiation layer, and radiation layer is installed at substrate bottom, it is characterized in that, still include: the one end array of feed layer is close to radiation layer is installed with circular polarization antenna, and vehicle positioning is carried out based on circular polarization antenna, metal shielding layer for isolating external interference is arranged below feed layer, UWB transceiver module is installed below shielding layer, time stamp controller is installed in UWB transceiver module, the present application is positioned based on circular polarization antenna vehicle, to ensure the receiving stability of signal in complex environment, in turn, still can obtain stable and reliable three-dimensional positioning result under complex environment, and then guarantee the high-precision positioning demand of vehicle under dynamic operation condition.

The utility model provides a circularly polarized antenna structure, a wireless communication module and a millimeter wave isolation communication module. The antenna structure comprises a radiation layer, a grounding layer and a microstrip line feed layer which are sequentially stacked from top to bottom. The radiation layer comprises a central circular patch and a parasitic unit; two linear grooves which do not pass through the circle center are formed in the central circular patch along the diameter of the central circular patch; the parasitic unit is an arc-shaped patch and is arranged on the periphery of the central circular patch, and the circle center of the arc-shaped patch coincides with the circle center of the central circular patch; the extension of the linear groove does not touch the arc-shaped patch; and a feed copper column of the microstrip line feed layer penetrates through each layer and then is connected to the vicinity of the circle center of the radiation layer. According to the utility model, the problem of polarization loss can be overcome, the bandwidth of circular polarization is increased, and the wireless communication transmission quality is significantly improved.

The present disclosure belongs to the technical field of antennas. Provided are a panel antenna and an electronic device, which can solve the problems of existing panel antennas, such as low aperture efficiency, uneven radiation amplitude, difficulty in achieving multi-frequency coverage. The panel antenna in the present disclosure comprises a waveguide structure, a first dielectric substrate, a radiation layer and a plurality of switch units, wherein the radiation layer has a plurality of slit openings; the switch units are arranged so as to correspond to the slit openings on a one-to-one basis, and are configured to control whether the slit openings corresponding thereto are open / closed; the radiation layer is divided into a middle region and a peripheral region; and the slit openings located in the middle region among the plurality of slit openings are divided into a plurality of groups, each group of said slit openings comprises at least a plurality of first slit openings, at least some of the first slit openings located in different groups have different sizes, and the closer a group of slit openings to the centre of the middle region, the larger the size of the first slit openings in said group of slit openings. The panel antenna in the present disclosure has the advantages of high aperture efficiency, multi-frequency coverage and even radiation amplitude.

The application belongs to the technical field of antennas and relates to a cross-dipole antenna which comprises a metasurface layer, a radiation layer and a ground layer; the metasurface layer is connected with the ground layer and forms a containing space between the metasurface layer and the ground layer; the radiation layer is arranged in the containing space, is connected with the ground layer and is arranged in a spaced mode with the metasurface layer; the radiation layer comprises two pairs of cross-dipoles; two feeding structures are arranged on the ground layer and are connected with the two pairs of cross-dipoles respectively; the radiation layer comprises a dielectric plate and four radiation patches which are arranged in a spaced center-symmetrical mode about the center of the dielectric plate; the dielectric plate and the radiation patches are square structures, one side of the radiation patch is parallel to one side of the dielectric plate; two radiation patches are adjacently arranged on the top surface of the dielectric plate, and the other two radiation patches are adjacently arranged on the bottom surface of the dielectric plate; two opposite radiation patches are connected to serve as a dipole. The application can reduce the profile of the antenna.

The invention provides an antenna unit and antenna equipment, belongs to the technical field of antennas, and aims to enable a transparent antenna to have a filtering effect. The radiation layer is located on one side of the feed structure and comprises a first substrate layer and a radiation patch located on the side, away from the feed structure, of the first substrate layer; wherein the first substrate layer is a transparent substrate layer; the filtering structure and the radiation patch are arranged in the thickness direction of the radiation layer, and a gap is formed between the filtering structure and the radiation patch in the thickness direction of the radiation layer; wherein the filtering structure comprises at least one annular electrode pattern, and the orthographic projection of the annular electrode pattern on the first substrate layer is at least partially overlapped with the orthographic projection of the radiation patch on the first substrate layer.

The invention discloses an array antenna which comprises a radiation layer, and a plurality of radiation slots are formed in the radiation layer. The cavity layer is arranged below the radiation layer, and the cavity layer comprises at least one coupling slot; and the feed layer is arranged below the cavity layer, a feed network is arranged on the feed layer, and the feed network comprises at least one ridge gap waveguide. According to the array antenna, the gap waveguide transmission line which is low in loss and does not need electric contact is used as the feed network of the antenna, the high-order mode resonant cavity can provide higher flexibility, a more compact structure and lower loss, the top layer is the loaded radiation gap of the rectangular groove, and the antenna is more compact in structure. The design of the groove can reduce the loss of energy at the gap and the leakage of non-radiation energy, and realizes the performance improvement of high gain, low loss and wide band of the miniaturized plane millimeter wave array antenna.

The invention discloses an MEMS infrared light source based on in-situ confinement growth processing and a preparation method thereof, and the preparation method comprises the steps: cleaning a silicon substrate, and carrying out the deposition of a supporting layer and a back supporting layer on the upper surface and the lower surface of the silicon substrate respectively; processing a heating electrode, a heating plane electrode, a growth electrode and a growth plane electrode on the supporting layer on the upper surface of the silicon substrate; etching the upper surface or the lower surface of the silicon substrate to form a substrate cavity; and growing a metal black radiation layer on the surface of the growth electrode through in-situ confinement growth processing. According to the preparation method, the metal black radiation layer is obtained based on in-situ confinement growth processing, so that the metal black radiation layer and the growth electrode are reliably combined; the surface emissivity and radiation efficiency of the MEMS light source are improved, the processing flow of the light source chip is simplified, and the processing cost of integrated processing of the infrared light source device and the black-body-like coating is greatly reduced.

The invention provides an antenna, an antenna array, a base station antenna, an antenna module, an antenna system and a base station, a radiation layer of the antenna is provided with a radiation cavity, the radiation cavity comprises a first cavity, a second cavity and a third cavity which are sequentially arranged and communicated, and the second cavity and the first cavity are partially or completely stacked and communicated. And the second cavity and the third cavity are partially or completely stacked and communicated. Moreover, the length directions of the first cavity and the third cavity are perpendicular to the thickness direction of the radiation layer, and the length direction of the third cavity inclines by a first angle relative to the length direction of the first cavity. Wherein the opening of one side of the third cavity far away from the second cavity is located on the second surface of the radiation layer, and the opening of one side of the first cavity far away from the second cavity is located on the first surface of the radiation layer and is used for being coupled with a feed structure so as to excite the radiation cavity to radiate electromagnetic waves through the feed structure. The antenna provided by the embodiment of the invention has the functions of low loss, broadband, efficient transmission, horizontal scanning, vertical beam forming, dual polarization and the like.

The invention provides a vehicle-mounted antenna, an antenna array, SLP equipment and a vehicle. The vehicle-mounted antenna comprises a first grounding structure, a second grounding structure, a feeding point, a grounding layer and a radiation layer, the radiation layer comprises a first radiation part and a second radiation part, and a first insulation gap is arranged between the first radiation part and the second radiation part. The first grounding structure and the second grounding structure are electrically connected between the first radiation part and the grounding layer, and the feeding point is arranged on the second radiation part to form a 2.5 D antenna form, so that the electrical connection of the grounding layer and the radiation layer is realized, and the size of the overall structure of the antenna is reduced. According to the scheme, the first insulation gap, the first grounding structure and the second grounding structure are arranged in the radiation layer, so that the first radiation part and the second radiation part can be excited to generate different frequency bands, the antenna can support signal transmission of multiple frequency bands at the same time, the multi-frequency-band requirement of the star flash technology is met, the bandwidth of the antenna is widened, and the antenna performance is improved. And the flexibility of the antenna is improved.

An array antenna (10), the array antenna (10) comprising a first radiation layer (11), a first ground layer (12), a power division layer (13), and a coupling layer (14). The first radiation layer (11) comprises first radiation units (111); the power division layer (13) comprises a power division network (131) comprising a power division main port (132) and power division ports (133); and the coupling layer (14) comprises coupling units (141), and each coupling unit comprises a first transmission line (142) and a second transmission line (143) which are coupled. In embodiments of the present disclosure, the coupling units (141) and the power division network (131) are arranged in layers, and the structure of the coupling units (141) is simplified, so as to reduce the mutual influence of the coupling units (141) and the power division network (131). Moreover, the size of the array antenna (10) is reduced to achieve miniaturization, high integration level, and simple structure of the array antenna (10).

This invention relates to the field of glass curtain wall film technology, specifically to a glass curtain wall radiation cooling film and its preparation process. The cooling film has a layered structure, comprising, from the side closest to the glass substrate outwards: a self-healing adhesion layer for forming a high-strength, self-healing interface with the glass substrate; a photothermal response radiation modulation layer disposed on the self-healing adhesion layer for passively adjusting the emissivity of its infrared band according to ambient temperature; a gradient porous radiation layer disposed on the photothermal response radiation modulation layer for efficiently emitting infrared radiation in the 8-13μm band; and an environmentally friendly interface reinforcement layer disposed on the gradient porous radiation layer. This invention, through its self-healing adhesion layer, achieves, for the first time in the field of radiation cooling films, autonomous repair of interface damage, fundamentally solving the problem of debonding failure caused by stress fatigue in curtain wall applications and greatly extending its service life.

The utility model discloses an artificial magnetic conductor and wearable equipment. The artificial magnetic conductor comprises a plurality of sub artificial magnetic conductors; each sub artificial magnetic conductor comprises a substrate, a radiation layer located on one side of the substrate and a grounding layer located on the side, away from the radiation layer, of the substrate. The radiation layer comprises a first branch part, a second branch part and a plurality of third branch parts; the second branch part surrounds the first branch part, and a gap exists between the first branch part and the second branch part; and the third branch part is distributed in the gap and is respectively connected with the first branch part and the second branch part. According to the utility model, by adopting the artificial magnetic conductor, the backward radiation of the antenna loaded with the artificial magnetic conductor can be reduced.

The application discloses a method for improving the bandwidth and efficiency of a 1bit circularly polarized transmission array antenna, which comprises the following steps: rotating the radiation patch of a 1bit circularly polarized phase encoding transmission unit by 90 degrees to form a type of unit which is orthogonally arranged with the radiation layer of the original transmission unit; cross-distributing the original transmission unit and the orthogonal unit to form a 2*2 structure block; exchanging the positions of the original unit and the orthogonal unit in the 2*2 structure block to form a 2*2 permutation structure block; cross-distributing the original structure block and the permutation structure block to form a 4*4 unit supercell; the radiation layer distribution pattern of the 4*4 unit supercell is approximately the order rotation of 4 2*2 structure blocks at 0 degrees, 90 degrees, 180 degrees and 270 degrees; and the 4*4 unit supercell is used to construct a 1bit circularly polarized transmission array antenna. The application solves the strong correlation of the main polarization and cross-polarization phase control in the uniform array, and improves the axial ratio bandwidth of the circularly polarized beam and the aperture efficiency of the array antenna.

The application discloses a high-gain directional broadband antenna, which comprises a metal grounding plate, a radiation layer, a feeding patch and an air medium layer; the radiation layer comprises first and second asymmetric radiation metal patches; and the feeding patch is located between the first and second radiation metal patches. The application adopts two asymmetric first and second radiation metal patches, so that the resonant frequencies of the two patch antennas have a certain difference; the metal radiation antenna is connected with the metal grounding plate through a certain number of metal short-circuit columns, so that the radiation of the radiation antenna close to the middle feeding patch is enhanced; the difference between the resonant frequencies of the two antennas is controlled by changing the position of the middle feeding patch; meanwhile, the introduction of the gap between the feeding patch and the radiation metal patch can introduce capacitance to improve the impedance characteristics of the antenna, so that the total bandwidth of the antenna is widened.

The embodiment of the utility model relates to the technical field of antennas, and particularly discloses an antenna and medical equipment, and the antenna comprises a dielectric layer, a radiation layer and a grounding layer. The dielectric layer is provided with a mounting surface; the radiation layer is arranged on the mounting surface, the radiation layer is arranged in a winding manner, and the radiation layer is provided with a first feed part; and the grounding layer is arranged on the mounting surface, the grounding layer is arranged in a winding manner, the radiation layer and the grounding layer are arranged at an interval, the grounding layer is provided with a second feed part, and the second feed part is coupled with the first feed part. Through the above mode, the radiation layer and the grounding layer are in a winding shape, and the overall size of the radiation layer and the grounding layer can be reduced, so that the overall size of the antenna is reduced, and miniaturization of the antenna is facilitated.

The application discloses a miniaturized metasurface antenna, which comprises three layers, namely a radiation layer, an air layer and a feed layer from top to bottom, wherein the radiation layer is provided with a metasurface radiation structure, and the feed layer is a microstrip line slot coupling feed structure; the metasurface radiation structure is composed of 16 square patches arranged in a 4*4 array, wherein a rectangular slot is loaded at the center of each square patch, and a branch is loaded at four corners; the metasurface radiation structure adjusts the equivalent capacitance of the metasurface antenna by changing the length and width of the loaded branch extending into the square patch; and the length of the current of the metasurface antenna is adjusted by changing the length and width of the rectangular slot. Compared with the existing conventional metasurface antenna, the metasurface antenna has the advantages of ensuring a wide impedance bandwidth and high gain of the metasurface antenna in the process of miniaturization.

The present invention relates to a heat transfer expansion plate processing and extraction system, and more specifically, by removing and extracting a heat transfer expansion plate installed inside the piping of the Reactor Coolant System (RCS) on the primary side of a nuclear power plant, the heat transfer expansion plate can be removed by remotely operating an electrical discharge machining (EDM) device and a gripper device installed on the equipment after installing equipment inside the reactor; by processing the heat transfer expansion plate remotely in a high-radiation zone, radiation exposure to workers can be reduced; by precisely processing the heat transfer expansion plate using an EDM device, damage inside the reactor can be prevented; by processing cutting grooves and cutting holes using an EDM device, processing time can be shortened and foreign materials generated during cutting can be minimized; by processing a gripper hole inside the heat transfer expansion plate and inserting a gripper, the heat transfer expansion plate can be stably grasped and pulled; and by processing the position of the gripper hole in the heat transfer expansion plate at a desired location, It has the effect of being able to adjust the gripper shape and overall size of the extraction device.

The invention provides an antenna and electronic equipment, belongs to the technical field of communication, and can solve the problem that an existing circularly polarized antenna is complex in structure. The antenna disclosed by the invention comprises a dielectric substrate; the radiation layer is arranged on the dielectric substrate; the radiation layer comprises a plurality of radiation units and a plurality of sub-feeders in one-to-one correspondence with the radiation units; the plurality of radiation units are arranged clockwise around the radiation center of the radiation layer, and any two adjacent radiation units are rotationally symmetrical about the radiation center; the first end of each sub feeder line is connected to the feeding point, and the second end of each sub feeder line is connected with the corresponding radiation unit; for the sub-feeder lines corresponding to any two adjacent radiation units, the lengths of the two sub-feeder lines have a first difference value, and the sub-feeder lines are configured to control excitation signals of the two radiation units correspondingly connected with the sub-feeder lines to have a first phase difference; and the reference electrode layer is arranged on one side, deviating from the radiation layer, of the dielectric substrate.

The invention discloses a fault diagnosis method, device and equipment, and relates to the technical field of fault detection. The method is applied to a nuclear power plant primary loop coolant ion on-line monitor, and comprises the following steps: under the condition that a test result of a target on-line monitor indicates abnormity, determining a fault alarm monitoring result, the fault alarm monitoring result being used for indicating whether a fault alarm exists; and determining a target fault type of the target online monitor according to the fault alarm monitoring result. According to the embodiment of the invention, on one hand, requirements of manual intervention and manual access to a radiation area can be reduced, personnel safety is guaranteed, and fault diagnosis efficiency is improved; and on the other hand, faults can be accurately positioned, namely, the accuracy of fault diagnosis can be improved, and on-site blind troubleshooting is avoided.

The application belongs to the technical field of antennas and relates to a protective Cassegrain antenna with a field-induced transmission sub-reflector, which comprises a support, a feed source, a main reflector and a protective array. The protective array comprises a plurality of protective units, each of which comprises a dielectric layer and a radiation layer. The radiation layer comprises four first radiation patches and four second radiation patches. The first radiation patches are triangular in structure and are rotationally symmetrical about the center of the dielectric layer. The second radiation patches are strip-shaped in structure, one corresponding end of each of which is arranged at the center of the dielectric layer, and the other corresponding end of each of which is arranged at a corner of the dielectric layer to form a cross-shaped structure, and the symmetry axis of the strip-shaped structure coincides with the diagonal of the dielectric layer. The first radiation patches and the second radiation patches are arranged at intervals, and a diode is arranged on each of the second radiation patches to achieve electromagnetic protection by changing the states of different diodes. The protective array is used as a sub-reflector to form the Cassegrain antenna. The application can achieve electromagnetic protection of the Cassegrain antenna.

The utility model relates to the technical field of PCB (printed circuit board) labels, and discloses a UHF (ultra high frequency) band anti-disassembly PCB label for a bank bag lock, which comprises a lock body used for locking a bank bag. The barb structure body is arranged on the lock body; the barb groove is formed in the lock body and is matched with the barb structure body; the PCB tag structure comprises a radiation layer which is used as a main radiation body of a tag antenna; and the anti-tamper inner loop antenna layer is nested on the inner side of the radiation layer, when the bank bag is illegally opened, the tag can be broken due to the design of a reverse anti-tamper V-shaped secant line, so that the anti-tamper inner loop antenna layer is broken, and the tag loses the read-write function, and due to the characteristic, the anti-tamper effect is effectively enhanced, and the illegal opening behavior can be found in time.

The invention discloses a dual-band double-sided ridge waveguide antenna array based on SIW feed. The dual-band double-sided ridge waveguide antenna array comprises a ridge waveguide horn radiation layer, a waveguide transmission layer, a low-frequency feed layer and a high-frequency feed layer. The antenna array is composed of 8 * 8 sub-arrays, and 64 radiation units are designed in total. The 8 * 8 sub-array structure is formed by connecting 64 waveguide transmission units in parallel with feed power division structures through waveguides, high-frequency and low-frequency feed power division structures are designed respectively, the high-frequency feed power division structure is a waveguide structure, the low-frequency feed power division structure is an SIW structure, metal strips between adjacent radiation units are used for reducing the side lobe level of a radiation pattern, and the metal strips are used for reducing the side lobe level of the radiation pattern. And a current path is prolonged by adopting a double-sided ridge waveguide structure, the overall weight of the antenna is reduced, and dual-frequency application of typical satellite communication frequency bands is realized. The antenna has the characteristics of compact structure, light weight, wide impedance bandwidth and the like, and is suitable for potential application requirements of Ku / Ka frequency band satellite communication.

The application discloses a broadband high-gain filter-backed cavity antenna applied to 5G millimeter waves, comprising a metal cavity, the metal cavity comprising a radiation layer, a support layer and a floor layer, one side of the radiation layer away from the floor layer being provided with a slit, the inside of the metal cavity being a first sub-cavity and a second sub-cavity stacked, a first metal column being arranged in the first sub-cavity, and the radiation layer and the floor layer being connected through a probe.The application integrates an antenna with linear polarization normal radiation characteristics and an antenna with broadband filtering characteristics together, adopts a back cavity slot antenna structure, and realizes the characteristics of antenna broadband, filtering, high gain, normal radiation and suppression of backward radiation.

The application belongs to the field of navigation positioning, and aims to solve the problems that the current method based on stacking increases the bandwidth, which leads to the increase of the height of the antenna, and in the case of sharp change of high and low temperature, the gap between the antenna stacks changes, which produces frequency offset, and causes the rapid reduction of the antenna gain. A microstrip antenna device, a navigation device and a manufacturing method are provided. The microstrip antenna device comprises a base, a feed network and a radiation sheet. The feed network and the radiation sheet are stacked, and the feed network is connected with the radiation sheet. The radiation sheet is fixed to the base. The radiation sheet has a first surface away from the feed network. The first surface is provided with a radiation layer. The radiation layer comprises a plurality of radiation sub-layers. At least part of the radiation sub-layers are distributed around the center of the first surface. At least one radiation sub-layer is electrically connected with the feed network. The application can ensure the bandwidth of the antenna, reduce the height of the antenna, and improve the performance of the antenna.