35 results about "Ka band" patented technology

The invention provides a multi-band composite high-integration TR assembly. The multi-band composite high-integration TR assembly comprises a shell, a front multi-layer board, a back multi-layer board, a C / X / Ku band receiving and transmitting circuit, a C / X / Ku band single receiving circuit and a Ka band receiving and transmitting circuit, wherein the front multi-layer board and the back multi-layer board are connected in the shell, the C / X / Ku band receiving and transmitting circuit is connected with the front multi-layer board, and the Ka band receiving and transmitting circuit is connected with the back multi-layer board. The low-cost scheme design of an all-solid-state microwave multilayer board suitable for batch production and testing is adopted, ports and transmission line layout are reasonably designed, multi-band composite mode transmission is achieved in the form of the front face and the back face, a C / X / Ku-band transmitting circuit and an H-polarization receiving circuit are integrated on the front face, and the transmission efficiency is improved. A C / X / Ku frequency band V polarization receiving circuit and a Ka frequency band receiving and transmitting circuit are integrated on the reverse side, different functional circuits are respectively transmitted through a microstrip line and a strip line through an interface circuit structure covering 1-40 GHz and an in-board vertical transition structure, the isolation degree of different circuits is improved, mutual crosstalk between different signals is avoided, and the transmission efficiency is improved. And the functions of high integration, high consistency, ultra wide band, numerical control phase shift, numerical control attenuation and the like of the assembly are realized.

The application belongs to the technical field of antennas, and discloses an S / Ka-band common-aperture antenna and communication equipment, which comprises a first dielectric plate and a second dielectric plate stacked from top to bottom; the top surface, the middle and the bottom surface of the first dielectric plate are respectively provided with a rectangular patch array, a first metal through hole and a first metal layer; wherein the rectangular patch array, the first metal through hole and the first metal layer form a magneto-electric dipole antenna array; the magneto-electric dipole antenna array works in the Ka-band and is used for realizing satellite communication; the top surface, the middle and the bottom surface of the second dielectric plate are respectively provided with a second metal layer, a second metal through hole and a third metal layer; wherein the second metal layer, the second metal through hole and the third metal layer form a low-profile monopole antenna; the low-profile monopole antenna works in the S-band and is used for realizing ground equipment communication; the application has a simple structure, can realize different beams and polarization characteristics, effectively improves the space utilization rate of the antenna and has high integration.

This invention discloses a broadband circularly polarized integrated feed transmission array antenna covering the entire Ka-band, comprising an array surface and an integrated feed. The phase center of the integrated feed coincides with the focal point of the array surface, illuminating the array surface perpendicularly and forming a 45-degree angle with the array surface in the horizontal direction. The array surface comprises multiple array elements of different sizes arranged linearly. Each array element includes two orthogonally arranged first and second dielectric substrates, which have the same height but different thicknesses. The integrated feed comprises a stacked first and second PCB board. A substrate integrated waveguide is disposed on the first PCB board with coupling slots, and a substrate integrated waveguide cavity and annular metal patches surrounding the substrate integrated waveguide cavity are disposed on the second PCB board. This invention achieves a wide axial ratio bandwidth and gain bandwidth, and has the advantages of low profile, light weight, easy fabrication, and low cost.

This invention discloses a user-end beam control system for a KuKa dual-band multi-beam antenna, comprising: an FPGA module for receiving instruction information from a payload integrated electronics system, generating various control signals and sending them to the KuKa dual-band multi-beam antenna, and also for receiving telemetry information from the KuKa dual-band multi-beam antenna, integrating it into a telemetry data packet and sending it to the payload integrated electronics system; a clock management module for receiving a reference clock signal from an external frequency source and generating the operating clock required by the FPGA module; an interface module for providing a serial communication interface and serial driver, an LVDS control interface and driver, and a debugging interface; and a debugging module for debugging the software running within the FPGA chip. This invention can quickly and independently adjust the beam pointing of the Ku and Ka bands of the KuKa dual-band multi-beam antenna and acquire telemetry data from the KuKa dual-band multi-beam antenna in real time.

The application discloses a kind of low-orbit satellite ultra-wideband navigation signal acquisition method and system, to solve the existing low-orbit satellite ultra-wideband navigation signal acquisition method, signal can not be locked, finally lead to the technical problem of low acquisition success rate.It is to obtain the low-orbit satellite pseudo-random noise code corresponding to ka band low-orbit satellite signal and multiple low-orbit satellite ultra-wideband navigation signals;According to preset sampling rate, preset skip time, ka band low-orbit satellite signal, generate complex signal and original intermediate frequency signal;Based on each low-orbit satellite pseudo-random noise code, pseudo-code spectrum library construction is carried out, and the pseudo-code spectrum library is output;Based on the known intermediate frequency parameter of original intermediate frequency signal, determine the discrete frequency search sequence, and combine the complex signal, pseudo-code spectrum library to construct matrix, and output three-dimensional result matrix;Using three-dimensional result matrix, each low-orbit satellite ultra-wideband navigation signal is acquired and determined, and multiple acquisition successful low-orbit satellite ultra-wideband navigation signals are determined.

The application discloses a Ka-band eight-way power combiner, which comprises a shielding box body, wherein a straight-through input port, an input waveguide cavity, an input coplanar magic T, a secondary waveguide power division module, a waveguide-microstrip double-probe conversion structure, a secondary waveguide power synthesis module, an output waveguide cavity, an output coplanar magic T and a straight-through output port are sequentially arranged in the shielding box body along a signal transmission direction; the secondary waveguide power division module and the secondary waveguide power synthesis module both adopt an E-T junction structure and are integrated with a three-stage waveguide E-plane stepped structure, so as to realize impedance matching from an input end to an output end; the Ka-band eight-way power combiner has high synthesis efficiency, extremely low amplitude imbalance and phase imbalance in the Ka band through multi-stage waveguide impedance matching, optimized double-probe conversion and symmetrical layout design. The combiner has the advantages of compact structure, large power capacity, simple machining and assembly and good stability.

The invention relates to the technical field of microwave ferrite devices, and discloses a K-to-Ka waveband miniaturized broadband microstrip isolator, which comprises a permanent magnet, a ceramic chip, a soldering lug, a circuit layer, a resistive film and a single ferrite which are sequentially laminated from top to bottom, a single ferrite substrate is made of a gyromagnetic material, and the isolator realizes a gyromagnetic function through the single ferrite substrate. The K-to-Ka wave band miniaturized broadband microstrip isolator assists the single ferrite substrate in stably playing a gyromagnetic function, the soldering lug, the ceramic chip and the permanent magnet are stacked to assist in improving the overall performance of the isolator, and the ceramic chip can play a role in insulation and protection to avoid electrical interference between the permanent magnet and the soldering lug, so that the service life of the isolator is prolonged. The use reliability and safety of the isolator are improved, the installation space occupation in radar communication and satellite communication equipment can be reduced through the miniaturization design of the overall structure, the overall size and weight of auxiliary equipment are reduced, and the portability and space compatibility of the equipment are improved.

The invention belongs to the technical field of microwaves, and particularly relates to a slot line-half-mode SIW composite transmission line for microwave / millimeter wave transmission, which is characterized in that a half-mode SIW structure is arranged in a sandwich structure, and a first metal layer synchronously loads a conical microstrip feeder line and a horn-shaped microstrip feeder line structure; the second metal layer is used as a metal structure with a floor function, and the design mode of additionally loading a slot line and an interdigital capacitor enables the device to realize transmission of an S wave band and a Ka wave band at the same time. Wherein in the S wave band, the horn-shaped micro-strip structure of the first metal layer is used for carrying out coupled feeding on the slot line, and in the Ka wave band, the conical micro-strip structure of the first metal layer is used for directly feeding the half-mode SIW; meanwhile, the second metal layer loads an interdigital capacitor at the tail end of the half-mode SIW to complete filtering, and finally the composite transmission line feed structure supporting synchronous transmission of the half-mode SIW and the slot line is constructed. The machining process is simplified, and the machining cost is reduced.

The application discloses an interferometric SAR synchronization method of radar inter-satellite link combined with Ka-band link cross correction, and aims at the problems of interrupting normal SAR imaging or existing initial phase winding in the existing synchronization link method, and proposes a cross correction scheme of X-band radar inter-satellite link combined with Ka-band high-precision synchronization link. The system adopts a common reference source to ensure the phase correlation, and different synchronization time sequences are designed, that is, the X-band link is synchronized at a low frequency to eliminate the initial phase winding, and the Ka-band link is synchronized at a high frequency same as the SAR pulse repetition frequency (PRF) to realize high-precision phase measurement. During ground processing, the initial phase error of the Ka-band compensation function is corrected by using the X-band synchronization data, so that a high-precision phase synchronization compensation function is obtained, and the echo of the secondary satellite is compensated. The application solves the problem of initial phase winding under the premise of not interrupting the normal SAR imaging time sequence, and significantly improves the phase synchronization precision, image quality and absolute height measurement reliability of the dual-satellite interferometric SAR system.

The invention belongs to the technical field of millimeter wave phased-array antennas, and particularly discloses a circularly polarized spherical phased-array antenna for Ka-band operation, which comprises a hemispherical antenna base and a plurality of radiation units, the plurality of radiation units are arranged on the hemispherical surface of the hemispherical antenna base in an array form; the circularly polarized spherical phased-array antenna is configured in a frequency range from 27GHz to 29GHz, so that + / -90-degree beam scanning of any azimuth tangent plane is realized. The scanning angle limitation of a planar array is broken through, and + / -90-degree continuous scanning of any tangent plane is realized; meanwhile, the array element spacing and the arrangement density are optimized in combination with the short wavelength characteristic of the Ka wave band, the mutual coupling effect of the high frequency band is reduced, and the problem that the actual use effect is poor due to the fact that the large-angle scanning radiation capacity of an existing Ka wave band planar phased array antenna is limited and the polarization purity is reduced is solved.

The invention relates to a Ka frequency band broadband multi-beam communication system based on a 5GNTN system, which can work under the 5GNTN system through the cooperative work of a 4T4R radio frequency transceiver chip, a signal processing FPGA, a monitoring FPGA, a clock PLL, an optical module and a power supply module, and the Ka frequency band broadband multi-beam communication system can work under the 5GNTN system through the cooperation of the 4T4R radio frequency transceiver chip, the signal processing FPGA and the optical module. And the maximum support bandwidth of the system is greatly improved while the number of supported beams is greatly improved, so that the uplink and downlink rates reach the level of 5Gbps.

The invention provides a full-band three-dimensional wave-absorbing metamaterial, which comprises a plurality of basic structure units arranged in a periodic array, and is characterized in that each basic structure unit comprises a first electromagnetic loss three-dimensional superstructure to a sixth electromagnetic loss three-dimensional superstructure and a metal backboard which are sequentially arranged from top to bottom; the first electromagnetic loss three-dimensional superstructure to the sixth electromagnetic loss three-dimensional superstructure are loaded with resistive frequency selective surfaces. The invention has the following beneficial effects: the resistive frequency surface, the pure metal patch and the electromagnetic loss three-dimensional superstructure are combined to carry out multi-dimensional coupling absorption design, so that the full-band absorption performance is realized in the current L, S, C, X, Ku, K and Ka bands with relatively high utilization rate, and certain electromagnetic loss performance is still shown in the V and W bands; the thickness is small, and the maximum oblique incidence angle is not smaller than 70 degrees, so that the requirements of thin-layer and low-surface-density electromagnetic wave-absorbing materials working in the current full-frequency-band range are met.

The application discloses a K / Ka-band circularly polarized transceiving common-aperture phased array antenna and phased array, comprising: a multilayer stacked substrate structure, the substrate comprising a metal layer, a dielectric layer and an adhesive layer; a K-band array element comprising a K-band radiation patch arranged on part of the metal layer, a K-band feeding structure and a K-band filtering structure, the K-band filtering structure comprising a first filtering structure, a second filtering structure and a third filtering structure; a Ka-band array element comprising a Ka-band parasitic patch arranged on part of the metal layer, a Ka-band radiation patch and a Ka-band filtering structure; each common-aperture phased array antenna comprises one K-band array element and five Ka-band array elements. The common-aperture antenna provided by the application can meet the requirement of realizing a conical surface wide-angle scanning in the K / Ka-band, and meanwhile, the problems of poor common-aperture antenna same-frequency and different-frequency isolation and poor circularly polarized array scanning axial ratio performance are overcome.

An improved antenna system is provided for controlling satellite communications in a satellite communication network. Antennas are disposed beneath a concave interior of a transmission surface. The transmission surface has a substantially similar shape or curvature of a radome top, and may be affixed to or integrated with the radome top to provide a phase compensated radome. The antennas may be mechanically moved, such as laterally translated, tilted, and / or rotated. The antennas may be electrically actuated via a switch. The transmission surface includes an array or patch of cells such as dual-band dual-polarized cells and / or quad-band dual-polarized cells. The improved antenna system enables high gain beam steering and Ku band, K band, and Ka band transmission and reception.

The invention discloses a Ka-frequency-band rain-attenuation-resistant uplink power rapid compensation method based on AGC, and relates to the field of communication and measurement and control. The system is composed of a satellite, a ground station receiving link, a ground station transmitting link, baseband equipment and a ground station monitor. According to the invention, a relation model of downlink signal rain attenuation and uplink signal power compensation is created by using the change of the satellite downlink signal receiving AGC level, and when the downlink signal changes due to the influence of the rain and snow antenna, the ground station can monitor the change condition in real time, measure and calculate the uplink power compensation parameter in real time and adjust the uplink power, so that the power compensation accuracy is improved. And the uplink of the satellite is always in a good working state. According to the invention, the problem that the uplink of the Ka frequency band of the ground station is influenced or interrupted in rainy and snowy days can be solved. According to the invention, rapid compensation adjustment of uplink power can be realized, the adjustment precision is high, the adjustment time is controlled below the second level, and the method also has the characteristics of practical and concise design scheme, strong universality, reliable control mode, high timeliness and the like.

This invention proposes a 2W-level Ka-band high-power amplifier. The amplifier employs a two-stage drive and eight-channel power combining architecture, combining a bandpass parallel power combining network with an optimized matching network. This achieves 2W-level saturated output power while maintaining high efficiency, linearity, and stability. The invention mainly consists of a power distribution input matching network, an input amplification stage, a drive amplification stage, an output amplification stage, and a power combining output matching network. Two-stage drive pushes the final stage output power to saturation, and an eight-channel tree-shaped power combining network achieves efficient power superposition, effectively solving the technical challenges of limited single-tube power, high high-frequency loss, and low combining efficiency in the Ka-band.

The application provides a full-band three-dimensional wave-absorbing metamaterial, comprising a plurality of basic structure units arranged in a periodic array, wherein the basic structure unit comprises a first electromagnetic loss three-dimensional superstructure, a second electromagnetic loss three-dimensional superstructure, a third electromagnetic loss three-dimensional superstructure, a fourth electromagnetic loss three-dimensional superstructure, a fifth electromagnetic loss three-dimensional superstructure, a sixth electromagnetic loss three-dimensional superstructure and a metal back plate arranged in sequence from top to bottom; and a resistive frequency selective surface is loaded on each of the first electromagnetic loss three-dimensional superstructure, the second electromagnetic loss three-dimensional superstructure, the third electromagnetic loss three-dimensional superstructure, the fourth electromagnetic loss three-dimensional superstructure, the fifth electromagnetic loss three-dimensional superstructure and the sixth electromagnetic loss three-dimensional superstructure; the application has the following beneficial effects: the resistive frequency surface, the pure metal patch and the electromagnetic loss three-dimensional superstructure are combined for multi-dimensional coupling absorption design, so that the full-band absorption performance is realized in the L, S, C, X, Ku, K and Ka bands which have a high utilization rate at present, and a certain electromagnetic loss performance is still exhibited in the V and W bands; the thickness is relatively thin, the maximum oblique incidence angle is not less than 70 DEG, so that the demand of a thin-layer, low-area-density electromagnetic wave-absorbing material working in a full-band range at present is met.

The invention provides a beam selection method and device suitable for a Ka frequency band based on Thompson sampling, and belongs to the technical field of beam selection, and the method comprises the steps: determining a plurality of to-be-analyzed beams from a plurality of candidate beams; for each to-be-analyzed beam in the plurality of to-be-analyzed beams, sampling values are obtained by random sampling from Beta distribution corresponding to the to-be-analyzed beams, and parameters of the Beta distribution are determined based on the number of successful transmission times and the number of failed transmission times of the to-be-analyzed beams; and taking the to-be-analyzed wave beam corresponding to the maximum sampling value in the sampling values of the to-be-analyzed wave beams as the target wave beam, so that the wave beams can be efficiently selected in real time.

This invention discloses a millimeter-wave one-to-many dual-polarized dual-band antenna assembly and its manufacturing method, relating to the field of radar electronic antenna feed subsystem manufacturing technology. The method includes the following steps: Step 1: Manufacturing an integrated antenna microstrip board; Step 2: Welding and fixing elastic connectors in the grooves of the housing using a solder paste application process; Step 3: Laying conductive adhesive film and installing positioning pins on the antenna microstrip board; Step 4: Installing four sets of antenna microstrip boards onto the housing with welded connectors using positioning pins to form an antenna unit; Step 5: Curing the conductive adhesive film using vacuum bag pressing. This invention's dual-band dual-polarized assembly achieves dual polarization, high integration, and high reliability of the antenna assembly through elastic vertical interconnection between the integrated antenna microstrip board and connectors on multiple housings. The resulting dual-polarized microstrip antenna assembly can be used in the Ka band and above, achieving a standing wave ratio of ≤2.0, and exhibiting excellent electrical performance within the millimeter-wave range.

A dual-band satellite antenna having a frequency switching function is described. One aspect of an embodiment relates to a dual-band satellite antenna having a frequency switching function, where the satellite antenna includes: an antenna unit for receiving a satellite signal; a first frequency processing unit configured to process a Ka band frequency for the satellite signal; a second frequency processing unit configured to process a Ku band frequency for the satellite signal; and a switching unit configured to select either the first frequency processing unit or the second frequency processing unit.

The invention discloses a K / Ka wave band single-layer common-aperture phased array antenna. The antenna comprises a dielectric substrate; each dual-frequency common-caliber unit comprises a K-band radiation unit and a Ka-band radiation unit, the K-band radiation unit is a rectangular ring patch with a hollow part, two first rectangular grooves and four second rectangular grooves are formed in the outer side of the rectangular ring patch, the Ka-band radiation unit is a first rectangular patch, and the Ka-band radiation unit is a second rectangular patch. The first rectangular patch is provided with two third rectangular grooves; the plurality of Ka-band single-frequency units are second rectangular patches, and each second rectangular patch is provided with two fourth rectangular grooves; and the plurality of double-frequency common-caliber units and the plurality of Ka-band single-frequency units in adjacent rows or columns are arranged in a staggered manner. According to the technical scheme, the dual-band receiving and transmitting function can be achieved on the single dielectric substrate, the antenna has the advantages of being wide in scanning range and high in isolation degree, the overall performance of the antenna can be improved, the overall structure of the antenna is simplified, and large-scale integration and miniaturization design of the antenna structure are facilitated.

The present application relates to meteorological radar detection technical field, especially a kind of Ka / C dual-band full phase Doppler double linear polarization radar detection method and system.The method is integrated Ka band and C band on the same radar platform, uses shared frequency source, antenna and servo system, realizes the coaxial, synchronization, full phase transmission and reception of double-band signal.System is based on GNSS timing module to generate reference clock, drive double-band transmitter to generate synchronous radio frequency pulse, coaxial radiation to cloud target by double-band common aperture antenna.After receiving echo by the same antenna, after processing, the Doppler parameter and double polarization parameter of double-band are extracted.Ka band is corrected by path integral attenuation using C band data with less attenuation, and combined with double-wavelength ratio algorithm and double polarization parameter, collaboratively retrieve cloud particle spectrum distribution, phase state information and vertical motion, such as microphysical and dynamic parameters, realize the high-precision, integrated synchronous detection of cloud precipitation process from micro-particle to macro-dynamic field.

The invention discloses a multi-polarization Ku / Ka frequency band common-caliber phased-array antenna, relates to the technical field of wireless communication, and is suitable for radar and communication systems such as microwave radar and millimeter wave radar. The common-caliber phased-array antenna provided by the invention comprises a dual-polarized slot antenna of a Ku frequency band and a dual-polarized microstrip antenna of a Ka frequency band, in order to realize the common-caliber design of the Ku frequency band antenna and the Ka frequency band antenna, the dual-polarized microstrip antenna of the Ka frequency band in the common-caliber antenna unit is rotationally symmetrical about the geometric center of the common-caliber antenna unit; in addition, the slot of the dual-polarized slot antenna of the Ku frequency band is a rectangular slot, and the rectangular slot is designed in the edge area of the common-caliber antenna unit. The antenna has the advantages of being low in profile, compact in structure, dual in frequency band, multi-polarized, easy to integrate and the like, and can be used in a wireless communication system and a radar system working in a Ku / Ka frequency band.

The application discloses a low-profile high-integration broadband dual-circularly-polarized transmit-receive co-aperture phased array antenna, which adopts a multilayer PCB laminated structure and comprises, from top to bottom, a radiation patch layer, a quasi-rectangular patch layer, a metal reflecting ground layer and a feeding layer, and combines a metallized blind hole with a buried hole to form a complete coupling passage. By integrating a U-shaped groove, a U-shaped metal strip and a C-shaped groove in the metal reflecting ground and loading staggered grooves in the quasi-rectangular patch, a K / Ka dual-band separated double-coupling feeding structure is realized, so that dual-circularly-polarized radiation is obtained under the same aperture. The antenna further designs a metalized hole array of an outer ring and an inner ring, the former is used for building an isolation area to improve band isolation, and the latter introduces a horizontal electric field component to improve circular polarization purity and expand the axial ratio bandwidth. The application realizes wide impedance bandwidth and wide axial ratio bandwidth in the K band and the Ka band, has high isolation, low profile and compact structure, and is suitable for broadband phased array systems such as satellite communication terminals and mobile platforms.

The application provides a Ka-band inter-satellite link pointing angle calculation and verification method, comprising: calculating a pointing vector in a low-orbit satellite antenna coordinate system through conversion from a body coordinate system to an antenna coordinate system; calculating a pointing angle (off-axis angle, azimuth angle) in the low-orbit satellite antenna coordinate system; implementing the foregoing pointing angle algorithm in a DSP hardware; simultaneously, simulating and calculating the off-axis angle and the azimuth angle of a low-orbit satellite pointing a medium-orbit satellite by using STK; and finally comparing the simulation result of STK with the implementation result of the DSP hardware to draw a conclusion. The application adopts a simplified position and velocity recursive algorithm to solve the Ka-band inter-satellite link pointing angle in real time, and completes the inter-satellite link space beam pointing of a low-orbit satellite to a medium-orbit satellite. Through the DSP hardware implementation and the STK software simulation, it is verified that the Ka-band inter-satellite pointing angle algorithm has low hardware implementation complexity and small hardware resource consumption under the premise of ensuring pointing accuracy.

This invention belongs to the field of phased array system-on-a-chip (SoC) technology, specifically a 256-beam phased array chip integrating a transceiver unit (TR) and a digital beamforming (DBF) unit. The invention employs a 3D heterogeneous integration packaging process, comprising a radio frequency (RF) layer, a conversion layer, a digital layer, and an interconnect layer. Vertical interconnection between these layers is achieved through through-silicon vias (TSVs) and micro-bumps, integrating the RF transceiver front-end (TR component) and the digital beamforming (DBF) processing unit into a single package. The chip's RF layer integrates 64 Ku / Ka band RF transceiver channels, expandable to support 256 beams in parallel formation. The conversion layer performs RF-to-digital signal conversion, and the digital layer completes the 256-beam combining process. This invention achieves tight coupling between the RF and digital modules, featuring high integration, small size, and low power consumption. It is suitable for spaceborne and airborne phased array communication systems, significantly improving system communication performance and space utilization.

This invention discloses a wide-bandwidth and wide-beam single-fed circularly polarized antenna element for the Ka band, relating to the field of satellite communication antenna technology. The antenna element comprises a multilayer dielectric substrate, a circular radiating patch, a metal ground layer, cross-shaped slots, arc-shaped slots, metal short-circuit posts, a microstrip feeding structure, and peripheral metal short-circuit vias. The cross-shaped slots consist of two intersecting slots of unequal length and four arc-shaped slots of unequal length, used to excite two orthogonal resonant modes; the four arc-shaped slots are located at the ends of the two intersecting slots to achieve miniaturization of the slot structure and improve the purity of circular polarization at low elevation angles; the metal short-circuit posts are used to improve the isolation between slots; the microstrip feeding structure achieves circularly polarized radiation through single-port coupling feeding. This antenna element can cover the Ka band from 27.5 GHz to 31 GHz and has advantages such as wide impedance bandwidth, wide axial ratio bandwidth and wide axial ratio beam, miniaturization, and ease of integration with active chips and feeding networks, making it suitable for satellite communication terminals and phased array antennas.

The invention relates to the technical field of marine remote sensing, in particular to a physical information coupling network model and a marine atmosphere multi-parameter collaborative inversion method, and aims to solve the problems of insufficient spectrum information utilization, poor modeling parameter coupling effect and multi-task imbalance in the prior art. The method specifically comprises the following steps: constructing a data set by fusing measured data and ERA5 reanalysis data; cross sensitivity among sea surface temperature, wind speed and water vapor is quantitatively analyzed based on a radiation transmission model, and physical constraints are provided for network structure design; constructing a PIC-NN model containing bidirectional physical coupling connection, and explicitly embedding physical constraints among parameters; training a PIC-NN model by using the preprocessed data set, and balancing each parameter inversion task by using a multi-task loss function with an adaptive scaling factor; and inputting measured data to be inverted into the trained PIC-NN model, and synchronously outputting inversion results of the SST, the SSW and the WV. According to the method, SST, SSW and WV can be synchronously inverted only by using the K / Ka wave band, and the inversion precision and the physical consistency are remarkably improved.

The invention provides an arbitrary polarization packaging antenna based on a ka frequency band, which is formed by at least one circular polarization array element with a complete function through a two-dimensional plane array, each circular polarization array element comprises four sub-antenna units arranged in an array, a mushroom-shaped electromagnetic band gap structure is arranged between the adjacent circular polarization array elements, and the antenna units are arranged in the array. The mushroom type electromagnetic band gap structure comprises a first copper foil layer, a first dielectric layer, a second copper foil layer, a prepreg, a second dielectric layer, a third copper foil layer and a formed metal via hole which are sequentially arranged from top to bottom, and risks caused by complex processes such as cross blind burying and the like are avoided while beam scanning gain reduction is not affected.

The application discloses a flexible packaging shell structure capable of covering C-Ka frequency bands, which comprises a shell structure main body, an input cavity and an output cavity are arranged on the front surface of the shell structure main body, and a radio frequency airtight packaging cavity is arranged on the back surface of the shell structure main body. The input cavity is connected to the radio frequency airtight packaging cavity through a first vertical transition channel, and the radio frequency airtight packaging cavity is connected to the output cavity through a second vertical transition channel, so that signals can only be transmitted through the vertical transition structure, electromagnetic radiation isolation is realized, the independence of the two regions is ensured, the packaging of the C-Ka frequency band LCAMP radio frequency part is realized, the types of components are effectively reduced, the process is simplified, the cost is reduced, and the system cost performance is improved.