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1018 results about "Phase array antenna" patented technology

Auxiliary method and device for phased-array antenna to track low-orbit satellite

The invention provides an auxiliary method and device for a phased-array antenna to track a low-orbit satellite. The method provided by the invention comprises the steps of predicting a movement track of a satellite based on an initial parameter, and determining an initial direction of a phased-array antenna based on the movement track; analyzing the power density change of a first satellite signal received by the phased-array antenna, predicting the relative position change of the phased-array antenna and the satellite based on the power density change, and adjusting the direction of the phased-array antenna based on the relative position change; when the difference between the direction of the phased-array antenna and the direction of a second satellite signal actually received by the phased-array antenna is larger than a preset value, the direction of the phased-array antenna is corrected based on the actual strength and the receiving direction of the second satellite signal, and the corrected phased-array antenna points to the satellite. The method and the device provided by the invention are used for solving the problems of insufficient precision, strong interference sensitivity, weak recapture capability and the like of a traditional tracking system, and reliable support is provided for efficient and stable communication of low-orbit satellites.
Owner:SHANGHAI JUZHIXING NETWORK TECHNOLOGY CO LTD

Ultra-wideband low-profile phased-array antenna

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

Dynamic phased array resonator systems and methods for determining a material substance

Embodiments described relate to a system for material detection and identification, The system may include a transmitter unit configured to transmit an RF signal at a resonance frequency for a material. The system may also include a phased array antenna assembly, the phased array antenna assembly configured to receive a response signal. The system may also include a receiver unit configured to analyze the response signal and to identify the material to a user if the presence of the material is indicated by the resonance characteristics. The techniques described herein relate to a method for material detection and identification. The method may include configuring a transmit signal for parameters to detect a material; sending the transmit signal to a phase shifter; transmitting, using a phased array antenna assembly, an RF signal at a resonance frequency for the material; processing the response signal; and outputting an identification of the material.
Owner:QUANTUM IP LLC

Circularly-polarized quasi-absorption filtering phased-array antenna

The invention relates to a circularly polarized quasi-absorption filtering phased-array antenna. A unit of the antenna comprises a multi-layer dielectric substrate, a semi-cured layer, a metal floor, a stacked patch and an orthogonal H-shaped gap, the first dielectric substrate is provided with a parasitic square loop, the second dielectric substrate is provided with a cross-shaped strip, and radiation zero points are introduced to the upper and lower edges of a passband respectively; the 3dB orthogonal directional coupler and the L-shaped feeder form a feed network, circularly polarized radiation is realized through slot coupling, and an isolation port of the 3dB orthogonal directional coupler is connected with a 50-ohm resistor, so that the energy of a lower stop band is absorbed, the energy of an upper stop band is reflected, and a quasi-absorption filtering characteristic is presented; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good filtering performance, and when array scanning is 0-45 degrees, the overlapping impedance bandwidth is 12%, the axial ratio bandwidth is 15.8%, and the maximum scanning loss is 2.3 dB; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good quasi-absorption filtering performance, and has huge potential in millimeter wave satellite communication application.
Owner:XIDIAN UNIV

Low-profile and high-integration broadband dual-circularly-polarized transmit-receive common-aperture phased-array antenna

The invention discloses a low-profile and high-integration broadband dual-circularly-polarized transceiving common-aperture phased-array antenna, which adopts a multi-layer PCB (Printed Circuit Board) laminated structure, comprises a radiation patch layer, a quasi-rectangular patch layer, a metal reflection ground layer and a feed layer from top to bottom, and is combined with a metalized blind hole and a buried hole to form a complete coupling path. A U-shaped groove, a U-shaped metal strip and a C-shaped groove are integrated on a metal reflection ground, and a staggered groove is loaded on a quasi-rectangular patch, so that a K / Ka dual-band separated dual-coupled feed structure is realized, and dual circularly polarized radiation is obtained under the same aperture. The antenna is further provided with outer ring and inner ring plated-through hole arrays, the outer ring plated-through hole arrays are used for constructing an isolation area to improve the isolation degree between wavebands, and the inner ring plated-through hole arrays introduce a horizontal electric field component to improve the circular polarization purity and expand the axial ratio bandwidth. Wide impedance bandwidth and wide axial ratio bandwidth are realized in the K wave band and the Ka wave band, the isolation degree is high, the profile is low, the structure is compact, and the broadband phased array antenna is suitable for broadband phased array systems such as satellite communication terminals and mobile platforms.
Owner:SUZHOU TIANLIDA ADHESIVE PROD CO LTD

Antenna unit radiator, circularly polarized phased-array antenna unit and antenna array

The invention discloses an antenna unit radiator, a circularly polarized phased-array antenna unit and an antenna array, and belongs to the technical field of antennas. The circularly polarized phased-array antenna unit comprises an antenna unit radiator, a first dielectric layer, a metal patch, a second dielectric layer, a third dielectric layer and a metal ground layer which are arranged in sequence; two L-shaped microstrip probes which are orthogonally arranged are laid on the top of the third dielectric layer; the third dielectric layer is internally provided with feed metal columns in one-to-one correspondence with the L-shaped microstrip probes, the top ends of the feed metal columns are connected with the corresponding L-shaped microstrip probes, and the bottom ends of the feed metal columns are provided with feed ports. The antenna array is formed by the antenna unit array. The working bandwidth of the antenna can be expanded, the defect of the narrow-band characteristic of the microstrip antenna is overcome, the degree of freedom of design of the phased-array antenna is improved, impedance matching is facilitated, and the circular polarization performance of the phased-array antenna array is greatly improved.
Owner:CHINA STARWIN SCI & TECH CO LTD

Glass phased-array antenna control module and manufacturing method thereof

According to the glass phased-array antenna control module and the manufacturing method thereof, a control circuit is manufactured on a glass substrate through a TFT manufacturing process, high-precision control over a phased-array antenna is achieved, the accuracy of beam pointing of the phased-array antenna and the quality of signal processing are guaranteed, and the manufacturing cost of the phased-array antenna is reduced. Through the combination of a TFT manufacturing process and a TGV technology, the layout space of a control circuit is saved, the installation space of an antenna chip is saved through a COB packaging mode, the high integration level of the phased-array antenna is achieved, the requirements for miniaturization and multi-functionalization of the phased-array antenna are met, and the application range of the phased-array antenna is widened. According to the phased-array antenna, the grounding isolation holes are formed in the periphery of the antenna chip, so that good crosstalk resistance is achieved, the stability and reliability of the phased-array antenna are improved, the performance of the phased-array antenna is comprehensively improved, the phased-array antenna has higher competitiveness in the fields of satellite communication, vehicle-mounted radars, military radars and the like, and the application prospect is wide. And the requirements of various fields on high-performance phased-array antennas can be better met.
Owner:RAINBOW (HEFEI) LIQUID CRYSTAL GLASS CO LTD

Low-profile ultra-wideband wide-angle scanning phased-array antenna based on tight coupling structure

A low-profile ultra-wideband wide-angle scanning phased-array antenna based on a tight coupling structure is composed of a metal floor and a plurality of antenna units, the antenna units extend in the X polarization direction and the Y polarization direction respectively to form a plane of any size, and an antenna array is formed; the antenna unit sequentially comprises an upper substrate, a dipole antenna and a lower substrate from top to bottom, the dipole antenna is vertically and crossly placed and comprises two layers of dielectric substrates and a layer of prepreg between the two layers of dielectric substrates, and a resistor-coated pattern is printed on the upper surface of the lower substrate.
Owner:NANJING RES INST OF ELECTRONICS TECH

Unmanned aerial vehicle countering method and countering device based on radio detection

The invention discloses an unmanned aerial vehicle countering method and countering device for radio detection, and relates to the field of signal processing, and the method comprises the steps: scanning and capturing a transient radio frequency pulse signal through a radio frequency receiving array, carrying out the time-frequency domain conjoint analysis, constructing a signal intensity space distribution matrix, and extracting a parameter set; matching with a protocol feature library, identifying an unmanned aerial vehicle remote control link protocol type, and calculating an unmanned aerial vehicle position and a threat level in combination with a signal time difference of arrival and a frequency difference; generating adaptive interference signal parameters according to the protocol type and the threat level; the method comprises the following steps: generating a directional beam through a two-dimensional phased-array antenna, focusing the position of an unmanned aerial vehicle to transmit an interference signal, monitoring signal intensity change and protocol response delay in real time, calculating a communication suppression ratio, and iteratively optimizing an interference strategy until a suppression threshold is reached. The method has the advantages that efficient and accurate signal capture and interference are realized through multi-channel radio frequency detection, accurate positioning and adaptive interference technologies, and the countering efficiency and adaptability are remarkably improved.
Owner:BEIJING BOHONG KEYUAN INFORMATION TECH CO LTD

Substrate-loaded frequency-scaled ultra-wide spectrum element

A phased array antenna that includes a base plate; first and second spaced apart radiating elements formed by at least one conductive layer disposed on at least one dielectric layer that projects from the base plate; and a pillar disposed between the first and second spaced apart radiating elements, wherein the pillar is electrically connected to the base plate, and the first and second spaced apart radiating elements are configured to capacitively couple to the pillar.
Owner:THE MITRE CORPORATION

Broadband wide-angle scanning array antenna based on metasurface lens

The invention discloses a broadband wide-angle scanning array antenna based on a metasurface lens, belongs to the technical field of phased-array antennas, solves the problem of how to improve the scanning range and gain of the phased-array antennae, and is characterized in that the metasurface lens with phase gradient is loaded above the phased-array antenna on the basis of not changing the structure of the original phased-array antenna. The beam scanning range of the phased-array antenna is expanded, and the performance such as gain is improved; according to the invention, an original phased-array antenna does not need to be modified and redesigned, additional active devices do not need to be added, new components do not need to be introduced into an original system, the system cost is effectively reduced, the system size is reduced, and the antenna is suitable for scenes, such as unmanned aerial vehicles and low-altitude aircrafts, which have strict requirements on the size and the weight.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST

Vehicle-mounted satellite phased-array antenna and beam forming method thereof

The invention relates to the technical field of wireless communication, and provides a vehicle-mounted satellite phased-array antenna and a beam forming method thereof, and the phased-array antenna comprises a plurality of antenna units and T / R assemblies which are correspondingly connected. The feed network is used for distributing signals from the beam forming network to each T / R component; and the beam forming network is used for calculating and distributing a phase to each T / R component, and adopting an adaptive beam forming algorithm to control the direction of a beam by adjusting the phase, so that the beam points to a required satellite or other targets. The phased-array antenna can form a plurality of transmitting wave beams and receiving wave beams with different directions through wave beam conversion in a repetition period, has rapid scanning agility capability, can change an antenna pattern function or an antenna wave beam shape through adjusting signal amplitude and phase in each unit channel in the phased-array array, and improves the antenna performance. The reliability is improved by omitting a mechanical driving system, and even if some nodes are damaged, the use of the whole function is not affected.
Owner:BEIJING HONGSHAN INFORMATION TECH RES CO LTD

Liquid crystal phased array dynamic star finding control method based on holographic phase coding

The invention relates to a liquid crystal phased array dynamic star finding control method based on holographic phase coding. The method comprises the following steps: acquiring an expected beam pointing angle of a target satellite relative to an antenna array; generating a two-dimensional phase matrix suitable for a liquid crystal phased array based on the expected beam directional angle; performing temperature compensation on the two-dimensional phase matrix, converting the two-dimensional phase matrix into a digital driving level, and loading the digital driving level to a liquid crystal driving circuit; a radio frequency beam pointing to the expected beam pointing angle is formed through radiation of the liquid crystal phased array antenna panel; and beam pointing errors are detected in real time according to downlink signal characteristics and are compensated. The liquid crystal phased array dynamic star finding control method based on holographic phase coding shows remarkable technical progress and practical advantages in multiple aspects; according to the method, a high-performance and high-reliability dynamic beam pointing system is constructed through key technologies such as holographic phase coding, real-time temperature compensation, high-speed calculation and closed-loop feedback, and the method is particularly suitable for high-dynamic scenes such as high-speed mobile carriers and low-orbit satellite communication.
Owner:NANJING CHINA SPACENET SATELLITE TELECOM CO LTD

High-orbit communication satellite phased array compact range test method

The invention provides a method for testing a phased array compact range of a high-orbit communication satellite. The method comprises the following steps: unfolding and fixing a whole satellite antenna on the ground; confirming that a test coupler is installed and a cable is connected normally; uploading software to a phased array antenna and confirming that the function is normal; setting a phased array transponder path, switching on the change-over switch, and opening the active single machine and the phased array on the path; after the phased array is preheated through telemetering, system-level testing is carried out, wherein at least one performance parameter such as noise spectrum and equivalent omnidirectional radiation power and functions such as program control pointing and beam hopping are tested; program control pointing function verification is performed according to wave beam program control preset pointing, and the DUT turntable is matched to verify the precision; hopping beam function verification jumps according to a preset time slot, and a Zero Span mode of a frequency spectrograph analyzes a time domain characteristic verification time sequence; and switching the phased array to standby after verification, shutting down after telemetering is normal, and recovering the on-satellite state. In this way, it can be ensured that the integration performance of the phased-array antenna and the transponder system meets the design requirement through quantitative analysis.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY

Low-orbit communication satellite two-dimensional switching system

The invention discloses a low-orbit communication satellite two-dimensional switching system, and belongs to the technical field of low-orbit satellite communication. According to the system, a load monitoring unit, a route switching unit, an inter-satellite processing unit, an access network processing unit and a feed processing unit work cooperatively. The load monitoring unit calculates the relative position of the satellite and the gateway station, generates an antenna pointing angle and stores a gateway station position table; the route exchange unit completes information forwarding, route detection and flow statistics; the inter-satellite processing unit realizes signal processing and mode conversion, and adopts a phased-array antenna to support fast beam pointing; the access network processing unit processes a user signal and supports a multi-mode antenna; the feed processing unit adopts a right-handed circularly polarized antenna and is isolated from left-handed polarization of an inter-satellite link, so that same-frequency parallel transmission is realized. Through a two-dimensional cooperative control mechanism, an intelligent judgment algorithm and a ground-satellite cooperative transmission architecture, the reliability and the resource utilization rate of a satellite communication network are remarkably improved.
Owner:THE 54TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION

Multi-frequency-point multi-polarization parallel sampling phased-array antenna automatic calibration platform

The invention discloses a multi-frequency-point multi-polarization parallel sampling phased-array antenna automatic calibration platform, and relates to the technical field of antennas, and the platform comprises a control center which is used for parameter modeling and test task configuration, parallel sampling strategy generation, and data storage and tracing; the FPGA hardware controller is used for generating synchronous trigger pulses and synchronously triggering the radio frequency switch matrix, the multi-path signal source, the six-axis mechanical arm, the multi-probe array module, the double-axis rotary table and the vector network analyzer VNA array; the radio frequency switch matrix is used for quickly switching multi-frequency-point multi-polarization signals; the multi-path signal source, the six-axis mechanical arm, the multi-probe array module, the double-axis rotary table and the vector network analyzer VNA array are used for synchronously collecting test data; the data processing module is used for receiving the sampling data, calculating a test index and carrying out closed-loop compensation and result verification; the test efficiency, the equipment utilization rate and the measurement precision are remarkably improved, and full-process automatic calibration and multi-dimensional data tracing are achieved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Self-adaptive multi-unit very-low-frequency phased-array antenna system and control method thereof

The invention discloses a self-adaptive multi-unit very-low-frequency phased-array antenna system and a control method thereof, and the system comprises an antenna unit which comprises a vertical radiator and a top loading capacitor network erected on the vertical radiator; the central signal processing and distributing unit comprises parallel signal channels with the same number as the antenna units, and the signal channels are integrated with signal adjusting devices; the input end of the feed network is connected to the central signal processing and distributing unit, and the output end is connected to the vertical radiator to transmit a radio frequency excitation signal; the plurality of feedback sensors are arranged in the feed network and are used for monitoring electrical state parameters of signals flowing to the antenna units; the central control unit is connected with the feedback sensor and the central signal processing and distributing unit, monitors electrical state parameters based on the feedback sensor, and controls the signal adjusting device to adjust the amplitude and phase of the excitation signal. According to the invention, the beam forming and directional communication capabilities of the very-low-frequency antenna are realized, and the flexibility of an antenna system is expanded.
Owner:WUHAN SHIP COMM RES INST (NO 722 RES INST OF CHINA STATE SHIPBUILDING CORP)

Broadband dual-circular-polarization low-cost phased-array antenna array element

The invention discloses a broadband dual-circularly-polarized low-cost phased-array antenna array element, which comprises an antenna radiation structure and a slot feed structure which are arranged independently from each other, and is characterized in that the antenna radiation structure comprises a parasitic radiation layer, a first dielectric substrate, an excitation radiation layer and a second dielectric substrate which are arranged in a laminated manner; the slot feed structure comprises a slot layer, a third dielectric substrate, a strip-shaped transmission line and a fourth dielectric substrate; the antenna layer structure and the slot feed structure realize electromagnetic coupling transmission through the slot layer; a hollow symmetrical structure is arranged in the middle of the first dielectric substrate, and the hollow part is used as an air medium to reduce dielectric loss; the gap layer is provided with a multidirectional coupling gap structure; the strip-shaped transmission line is provided with at least two feed ports, and dual circularly polarized radiation is formed in the antenna layer structure through excitation of different feed ports. The antenna radiation layer has no metal through hole or blind hole, can be processed in a layered manner, has the advantages of low processing cost and high yield, and ensures impedance bandwidth while realizing dual circular polarization.
Owner:WUHAN ZHONGYUAN COMM CO LTD

Method and system for monitoring high-frequency interference of 5G millimeter wave equipment

The invention is suitable for the field of communication interference monitoring, and provides a 5G millimeter wave equipment high-frequency interference monitoring method and system, and the method comprises the steps: collecting a target monitoring frequency band, dividing the target monitoring frequency band into a plurality of sub-frequency bands with the bandwidth of 20MHz, collecting the signal power spectrum density of each sub-frequency band, and calculating the signal power spectrum density of each sub-frequency band; extracting interference intensity, an interference range and a service volume parameter of a corresponding frequency band; constructing a priority ranking model and grading the interference of each sub-band; the spatial position of an interference source is positioned through multi-TRP cooperation; adjusting time slot allocation and power resources of the space-air-ground network according to an interference priority sorting result; based on an interference source positioning result and a resource allocation scheme, dynamically adjusting beam forming parameters of the phased-array antenna or switching a working frequency band; through multi-dimensional parameter acquisition and priority modeling, the influence of interference on different services is accurately quantified, so that interference processing better meets actual requirements; the space-air-ground cooperation and multi-TRP positioning technology provides a reliable basis for interference treatment.
Owner:KUNSHAN HAOXING ELECTRONIC TECH CO LTD

Multi-node software online upgrading method for airborne radar phased-array antenna wave control system

The invention belongs to the technical field of airborne radar phased-array antenna wave control system design, and particularly relates to an airborne radar phased-array antenna wave control system multi-node software online upgrading method, which comprises the following steps of: 1, synthesizing upgrading files of software needing to be upgraded into a total upgrading file; step 2, extracting a total upgrading file from the software configuration library, sending the total upgrading file to a main node of a system to be upgraded by an upper computer, and performing file verification; step 3, extracting frame header information of the total upgrade file by the master node of the system to be upgraded, comparing the information of each upgrade file with the information of each slave node software collected in real time, and judging whether to upgrade each slave node software; 4, the master node of the to-be-upgraded system disassembles the upgrade file needing software upgrade according to the upgrade file information in the total upgrade file frame header, and issues the upgrade file to the corresponding slave node; and step 5, upgrading the software by the slave nodes needing to be subjected to software upgrading according to the upgrading file.
Owner:LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA

Shipborne weather radar integration platform and installation method

The invention relates to a shipborne weather radar integrated platform and an installation method, and belongs to the technical field of shipborne radars. A radar system is disassembled into a platform unit, a power cabinet unit and a display control terminal unit through a separated layout; wherein the platform unit adopts a heightened cylinder structure to support a ball cover and an internal phased array antenna, and is combined with a two-degree-of-freedom stable platform to compensate the shaking of a ship body in real time; the power cabinet sinks to a middle-layer deck cabin; the display control terminal is arranged in front of a forecastle deck central control room; in addition, aiming at a closed ball cover environment, an air conditioner internal unit is arranged in a direct blowing device in the cover, an external unit is moved to a lower deck, and accurate temperature and humidity control is realized by matching with a dehumidifier and double-path condensate water discharge. According to the invention, while the radar performance is satisfied, the light weight of the upper part, the system reliability and the maintenance convenience are realized.
Owner:AEROSPACE NEWSKY TECHNOLOGY CO LTD

Three-dimensional antenna array system

A three-dimensional (3D) antenna array system in the form of a phased array antenna having a first antenna array and a second antenna array, a calibration circuit including an external signal generator, and a hinged power transformer is described. The external signal generator is electrically connected to the first antenna array, and the first antenna array is electrically coupled to the second antenna array via the hinged power transformer. The hinged power transformer mechanically joins the first antenna array to the second antenna array in one of a first position and a second position, with the first antenna array being disposed at an angle in relation to the second antenna array when the hinged power transformer is disposed in the first position.
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC

Flexible phased-array antenna sensing regulation and control method and system based on array element mutual coupling

The invention discloses a flexible phased-array antenna sensing regulation and control method and system based on array element mutual coupling, and mainly solves the problem of electrical performance deterioration caused by structural deformation of a phased-array antenna. Comprising the following steps: 1) acquiring strain information of a phased-array antenna in real time by using a fiber grating strain sensor; 2) constructing an electromagnetic calculation model considering mutual coupling, and calculating radiation characteristics of an antenna array through an array superposition principle; 3) building a neural network framework KAN, setting an input layer as a strain, and setting an output layer as an amplitude and phase adjustment amount; 4) constructing a physical information neural network by using the neural network output layer and the electromagnetic calculation model, and training the physical information neural network; 5) inputting the strain into the trained model, calculating the amplitude and the phase adjustment amount of the excitation current of the antenna unit, and sending the amplitude and the phase adjustment amount to a wave control circuit; and 6) adjusting each antenna unit by using the T / R assembly to realize regulation and control. According to the invention, the self-adaptive compensation of the phased-array antenna in service can be realized, and the regulation and control precision is effectively improved.
Owner:XIDIAN UNIV +1

Dual-polarization one-dimensional scanning phased-array antenna and weather radar system

The invention discloses a dual-polarization one-dimensional scanning phased-array antenna and a weather radar system, the antenna comprises a radiation layer, a first feed layer, a first PCB layer, a second feed layer, a second PCB layer and a third feed layer which are stacked from top to bottom, and a horizontal polarization radiation unit and a vertical polarization radiation unit of the radiation layer are arranged in an orthogonally staggered manner; each first feeder is etched on the top surface of the first PCB layer and corresponds to a first metal groove formed in the bottom of the first feed layer and a second metal groove formed in the top of the second feed layer in position; and each second feed line etched on the top surface of the second PCB layer corresponds to the position of a third metal groove formed in the bottom of the second feed layer and the position of a fourth metal groove formed in the top of the third feed layer. According to the invention, high cross polarization isolation is realized, and the antenna has dual polarization beams with low side lobes and consistent beam width and pointing height in the whole working frequency band.
Owner:HUNAN NOVASKY ELECTRONICS TECH CO LTD

High-edge antennas for optimized SAR performance

A method includes transmitting radar signals toward a target area via a phased array antenna of a synthetic aperture radar (SAR) antenna system, receiving reflected radar signals from the target area, performing, via a signal processor, one or more SAR algorithms to convert the reflected radar signals into one or more images, video, and / or measurements of the target area, receiving one or more of ground-based visual data, aerial data, and / or historical or architectural data, integrating the ground-based visual data, the aerial data, and / or the historical or architectural data with the one or more images, video, and / or measurements produced by the SAR antenna system to produce a cohesive visualization, and sending the visualization to a user device for display and interaction therewith.
Owner:INFINITUS HOLDINGS INC

Non-interruption phased array wave beam switching method

The invention discloses an uninterrupted phased array beam switching method, which relates to the field of satellite communication, and comprises the following steps: dividing a phased array antenna array plane into N independent phased array sub-arrays, arranging antenna array elements and transmitting and receiving component modules with the same number in each phased array sub-array, and configuring an independent control interface for each phased array sub-array; the wave control FPGA receives a wave beam pointing updating instruction from a satellite main control computer, analyzes a phase control value required by each phased array sub-array, and initializes a sub-array counter N to be equal to 1; and the wave control FPGA sends a phase control value to the transmitting and receiving assembly module of the Nth phased array sub-array through the Nth SPI interface, so that the Nth phased array sub-array enters a switching state, and a timer is started at the same time. According to the invention, the phased array is divided into a plurality of sub-arrays which are independently controlled, and a time-sharing switching strategy is adopted, so that the technical problem of a traditional overall switching mode in a high-speed transmission scene is effectively solved.
Owner:STAR DIGITAL CHAIN (BEIJING) TECHNOLOGY CO LTD

Flexible phased array antenna systems and methods

A phased array antenna system includes a flexible printed circuit board formed of a flexible material. The flexible printed circuit board includes a component layer, an antenna layer, and a phase matching layer between the component layer and the antenna layer. A control unit is coupled to the component layer. A plurality of antenna elements are coupled to the antenna layer. A plurality of signal paths extend through the component layer, the phase matching layer, and the antenna layer. Each of the plurality of signal paths connects the control unit to a respective one of the plurality of antenna elements. The control unit provides an independent phase controllable source, which allows beams emitted from the antenna elements to be steered.
Owner:THE BOEING CO

Antenna unit, antenna array and communication equipment

The invention provides an antenna unit, an antenna array and communication equipment, and the antenna unit comprises a first patch structure which is provided with a shielding metal through hole; the second patch structure is arranged on the first side of the first patch structure and is attached to the first side of the first patch structure; the probe structure is attached to the side, away from the first patch structure, of the second patch structure; the metal ground structure is attached to the side, away from the second patch structure, of the probe structure; and the wide-angle matching layer is arranged on the side surface, far away from the second patch structure, of the first patch structure. According to the design of the antenna unit, through the synergistic effect of the shielding metal via hole, the double-layer patch structure, the optimized probe structure and the wide-angle matching layer, the problem that a phased-array antenna in the prior art is difficult to give consideration to high bandwidth and wide-angle scanning at the same time is effectively solved.
Owner:CHINA SATELLITE NETWORK INNOVATION CO LTD +1

Aviation dual-frequency satellite communication phased-array antenna composite tracking method

The invention discloses a composite tracking method for an aviation dual-frequency satellite communication phased-array antenna. According to the method, the dual-frequency satellite communication phased-array antenna can be always aligned with high-frequency and low-frequency satellites in the flight process by utilizing navigation data calculated by an autonomous navigation system. The method does not depend on external data, is an independent system, and is easy to maintain and convenient to use. In the implementation process, the high-frequency antenna master control module and the low-frequency antenna drive and control integrated module share navigation data, the working states of opposite ends can be sensed mutually, pointing adjustment can be made in time, high-frequency links and low-frequency links can be backed up mutually, and the reliability of a communication system is improved.
Owner:CHINESE PEOPLES LIBERATION ARMY UNIT 91550

Millimeter wave phased array antenna communication system and method

The invention relates to the technical field of wireless communication, and discloses a millimeter wave phased-array antenna communication system and method, and the system comprises an environment perception and data collection unit, a feature coding and prediction unit, a cognitive beam forming decision unit, a self-adaptive hybrid beam forming control unit, a millimeter wave phased-array antenna unit and a communication interface unit. According to the method, real-time environment data are obtained through fusion of a multi-source sensor, feature extraction and future state prediction are carried out by using a deep learning model, active beam adjustment is carried out based on prediction of user movement, obstacle shielding and channel change, the risks of communication interruption and performance reduction caused by environment sudden change are reduced, and the method is suitable for being applied to the field of communication. The problem that in the prior art, response lags or depends on frequent interaction, so that signaling overhead and time delay are increased is solved.
Owner:XINGSHITONG NANJING COMM TECH CO LTD