580 results about "Phase array antenna" patented technology

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.

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.

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.

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.

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.

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.

The invention provides a millimeter wave tile-type phased-array antenna heat transfer-heat storage system, and the system comprises a heat transfer main body which is provided with a radiating surface, a heat conduction surface, and at least one heat dissipation surface; wherein an electrical function module of the phased-array antenna is arranged on the heat conduction surface to transfer heat generated by operation to the heat conduction surface, a heat conduction path and a phase change heat storage unit are formed in the heat conduction surface, the phase change heat storage unit is used for absorbing and storing part of heat, the heat conduction path is connected with the heat dissipation surface, and the phase change heat storage unit is connected with the heat dissipation surface. At least part of heat generated by the electrical function module is transmitted to the heat dissipation surface through the heat conduction path of the heat conduction surface for heat dissipation. The radiating surface is used as a signal radiating window of the phased-array antenna; and the phase change heat storage module is arranged outside the heat transfer main body, is connected with the heat dissipation surface and is used for absorbing heat dissipated by the heat dissipation surface. The invention provides an efficient heat transfer-heat storage technical scheme, and solves the thermal control problem of high-power work of the phased-array antenna on a platform within limited time.

The invention discloses an implementation method suitable for a high-throughput satellite communication hybrid duplex system. The method comprises the following steps: acquiring dual-network statistical basic data including end station back-and-forth propagation time delay distribution and phased-array antenna receiving and transmitting switching characteristics; constructing a dual coupling time planning mathematical model taking starting and ending moments of time windows of an original network and a mirror image network as optimization variables, and solving an optimal time parameter under the condition of satisfying physical constraints such as time delay accessibility, antenna switching safety and master station receiving zero overlap; and the master station broadcasts a time slot configuration instruction to cooperatively control the end stations of the whole network to execute hybrid duplex transceiving. A closed-loop feedback mechanism based on local observation of an end station is also introduced, and time delay drift is estimated and model input is corrected by using network clock reference information. According to the method, static configuration is converted into dynamic mathematical optimization solution, zero-conflict hybrid duplex communication under complex physical constraints is achieved, and the satellite spectrum resource utilization rate and the system operation stability are improved.

The invention, which relates to the technical field of phased-array antenna testing, discloses an automatic phased-array testing system comprising a vector network analysis module, an antenna horn and servo control module, a phased-array antenna module, a testing tool module and an upper computer control module. The invention also discloses a phased array automatic test method. The method comprises the following steps: preparing before testing; configuring test parameters; executing an automatic test; processing and storing test data; and finishing the test and resetting the equipment. Full-process automatic testing is achieved through the upper computer automation unit, traditional testing time is shortened, large-scale phased array batch testing is adapted, personal errors are eliminated through the testing tool, the vector network module and the servo module, data credibility is improved, operation is simplified, data are automatically stored, a report is generated, modular design is adapted to multiple types of phased arrays, and testing efficiency is improved. And the cost is reduced, the application is wide, and better use prospects are brought.

The invention discloses a millimeter wave dual-polarization phased-array antenna beam forming method and device, and relates to the technical field of high-frequency communication, and the method comprises the following steps: obtaining a complex weight signal of each array element in an antenna array under a horizontal polarization channel and a vertical polarization channel, respectively carrying out amplitude response and phase response acquisition and calibration processing on the complex weight signal; performing dynamic extraction and modeling on amplitude errors and phase errors of each array element in different polarization channels; on the basis of error estimation, constructing a machine learning prediction module comprising a time sequence prediction model; performing joint estimation on a real-time error estimation result and a prediction error result; constructing a hardware-software collaborative calibration structure comprising a dynamic gain control module on the basis of the compensation weight; beam focusing of the target space area is realized; according to the invention, the hidden problems of beam offset, sidelobe lifting, gain loss and the like caused by inconsistency of polarization channels are solved.

The invention discloses a phased-array antenna control method and system based on impedance matching, a medium and a product, and relates to the technical field of antennas. In the method, before the phased-array antenna works, a target impedance matching parameter is calculated for active input impedance under each preset scanning angle point; establishing a target mapping relation table based on the plurality of preset scanning angle points and the corresponding target impedance matching parameters; during the working period of the phased-array antenna, receiving a target scanning angle, and calculating to obtain a corresponding beam pointing phase value for each antenna unit in the antenna array according to the target scanning angle; determining a real-time impedance matching parameter based on the target scanning angle and the target mapping relation table; and loading the beam pointing phase value to a phase shifter in the feed network, and applying a real-time impedance matching parameter to the dynamic impedance matching network, so that the input impedance of the antenna array is matched with the characteristic impedance of the feed network. By implementing the technical scheme provided by the invention, the radio frequency performance of the phased-array antenna is improved.

The invention relates to a multichannel transparent forwarding communication load system and method based on a communication channel. The system comprises a multi-beam receiving phased-array antenna, a multi-beam transmitting phased-array antenna, a servo reflector antenna and a communication processor, and a forward forwarding communication link and a reverse forwarding communication link of the system are respectively provided with a communication channel and a multi-channel transparent forwarding channel; the multi-beam transmitting and receiving phased-array antenna is used for transmitting signals to the terminal and receiving terminal signals in the forward and reverse forwarding communication links respectively; the servo reflector antenna is used for receiving a signal of the gateway station in the forward forwarding communication link and the reverse forwarding communication link and sending the signal to the gateway station; and the communication processor receives and processes communication channel signals of each link to realize full-link communication signal power and carrier-to-noise ratio monitoring, and communication channels are synchronized with multichannel transparent forwarding channels of the same link to transmit signaling, remote control, telemetering and service signals. By adopting the system, the availability of the communication system can be effectively improved.

The invention discloses an automatic test system and method for a phased-array antenna, and belongs to the technical field of phased-array antennas. The system comprises a multifunctional control cabinet used for receiving a cooperation instruction issued by an upper computer, decomposing the cooperation instruction into a control instruction for each component in the test system, and issuing the control instruction to a target component, thereby controlling the cooperative work of each component, and completing the automatic test of the phased-array antenna; the switch matrix case is used for realizing signal cross input and output between the horn antenna and the tested phased-array antenna and carrying out vector data test or spectrum data test according to a control instruction; the variable-frequency switch matrix case is used for completing signal conversion of the horn antenna; the amplification switch matrix case is used for realizing signal conversion of the tested phased-array antenna; all parts in the case adopt a universal modular design, and the phased-array antenna testing device has the characteristics of high reliability, good maintainability, low system building cost and the like, can automatically test, improves the testing efficiency of the phased-array antenna, and reduces manual intervention.

The invention provides an automatic driving formation hardware-in-the-loop simulation platform based on a satellite position simulation platform and a medium, and relates to the technical field of automatic driving and car networking simulation. The platform comprises a satellite position simulation module, a traffic simulation platform, a hardware verification platform, a simulation bus and a clock synchronization module. The satellite position simulation module generates satellite data with a timestamp; the traffic simulation platform constructs a formation driving scene and operates a formation control algorithm; the hardware verification platform comprises a real phased-array antenna module and a PC5 communication device. The modules exchange data through a simulation bus, and the clock synchronization module unifies the time reference to form a closed-loop verification environment of simulation hardware simulation. The problems that space-based data and ground simulation are separated and real communication characteristics are difficult to quantitatively evaluate in the prior art are solved, the satellite-ground cooperation and formation control strategy can be efficiently and reliably verified in a laboratory environment, and the real vehicle test cost and risk are remarkably reduced.

The application discloses an implementation method suitable for a high-throughput satellite communication hybrid duplex system, which acquires double-network statistical basic data containing end station round-trip propagation delay distribution and phased array antenna transmission-reception switching characteristics; constructs a dual-coupling time planning mathematical model with original network and mirror network time window start and end time as optimization variables, and solves optimal time parameters under the conditions of satisfying physical constraints such as delay reachability, antenna switching safety and main station reception zero overlap; and the main station broadcasts time slot configuration instructions to cooperatively control all network end stations to perform hybrid duplex transmission-reception. The application also introduces a closed-loop feedback mechanism based on end station local observation, estimates delay drift by using network clock reference information, and corrects model input. The application realizes zero conflict hybrid duplex communication under complex physical constraints by converting static configuration into dynamic mathematical optimization solution, and improves satellite spectrum resource utilization rate and system operation stability.

According to the phased-array antenna liquid cooling and heat storage integrated support and the manufacturing method thereof, the support is of a plate-shaped structure, a plurality of parallel conduction ribs are arranged at the top of the support at intervals, installation grooves are formed between the adjacent conduction ribs and used for installing heat source modules, the surfaces of the heat source modules are attached to the surfaces of the conduction ribs, and the heat source modules are arranged in the installation grooves. An annular closed liquid flow channel is formed in the antenna, the liquid flow channel penetrates through the interior of each conduction rib in the length direction, and a liquid inlet and a liquid outlet which are communicated with the liquid flow channel are formed in the outer side of the support; a heat storage cavity is formed in the bottom of the support and used for being filled with a phase change material, grid ribs are arranged in the heat storage cavity, and the heat storage cavity, the mounting groove and the liquid flow channel are mutually spaced. The phased-array antenna liquid cooling and heat storage integrated support is manufactured in a 3D printing mode. According to the scheme, the integrated structural design is adopted, the product size is smaller, and the liquid cooling and heat storage capacity of the product can be effectively improved.

A system includes a phased array antenna, a signal processing module configured to detect wireless signals received from one or more target devices, a conversion module configured to determine 3D spatial data for the one or more target devices based on the wireless signals, an integration module configured to receive visual data from at least one camera, perform object detection and classification on the visual data to detect and classify one or more objects, and tag the one or more objects with 3D coordinates based on the 3D spatial data for the one or more target devices; and a correlation module configured to synchronize the 3D spatial data from the conversion module with the visual data from the integration module including object detection and classification information for use in a cloud-based augmented reality (AR) content to augment social networking and targeted advertising.

The invention relates to a high and low orbit satellite tracking method based on geomagnetic correction. The method comprises the following steps: constructing a geomagnetic model, calculating an azimuth angle and carrying out magnetic field interference analysis; carrying out factory calibration by utilizing a three-dimensional geometric calibration mode, including horizontal correction and vertical correction; the current azimuth angle and pitch angle are continuously corrected based on the carrier coordinate system by using the signal intensity, and the deviation is obtained so as to continuously approach the real angle; utilizing the known coordinates of the three-dimensional space to inversely calculate the current position; and the current data is corrected by using the big data, so that the current data meets the use requirements. The current attitude angle and the satellite signal receiver are used for tracking the target satellite, and then the known azimuth angle is used for correcting the geomagnetic data, so that the azimuth angle precision is improved, the cost of a phased-array antenna or a mechanical antenna is reduced, the tracking precision is improved, and the tracking speed is improved.

The application relates to the field of phased array antennas, and discloses a subarray-level anti-interference implementation method based on a planar phased array, which can quickly and accurately perform null processing on multiple interference signals at the subarray level when the planar phased array performs digital beam forming, thereby effectively receiving the expected signals while suppressing the interference. The implementation scheme is as follows: the planar phased array is arranged, and the center position coordinates of each subarray and the array element position coordinates are stored; the target information features are extracted by using a fast capture technology to determine the spatial target positions of the expected signals and the interference signals; a subarray-level constraint matrix C and a constraint vector f required for anti-interference are constructed; the optimal weight values are solved in the unit of the subarray; and a directional diagram is scanned. The anti-interference implementation method based on the planar phased array can be implemented at the subarray level, does not need to know the expected signals and calculate the covariance matrix of the received signals, saves the calculation resources, and can conveniently and quickly perform null processing on the positions of all the interference signals in the directional diagram.

The application provides a high-isolation dual-polarized phased array TR assembly based on front and back layouts, and relates to the technical fields of microwave and phased array radar. The assembly comprises a multilayer printed board structure cavity, a first surface of the multilayer printed board structure cavity is provided with a radio frequency link of a first polarization channel, and a second surface is mirror-imaged with a radio frequency link of a second polarization channel; the first surface is opposite to the second surface; the first polarization channel and the second polarization channel are orthogonal polarization channels. The application fundamentally solves the polarization crosstalk problem caused by the traditional side-by-side layout, can improve the dual-polarization isolation to more than 80 dB, optimizes the space utilization and the heat dissipation path, and is particularly suitable for high-density and high-performance dual-polarized phased array antenna systems.

The invention relates to an electronic fence monitoring method based on phased-array antenna adaptive adjustment, and the method comprises the steps: taking a protection target as a center, and constructing a risk field which continuously changes along with the distance between an unmanned plane and the protection target; obtaining a motion track of the unmanned aerial vehicle through a radar, and determining whether the unmanned aerial vehicle flies around a point based on the motion track; if it is judged that the flight is around the point, the speed sensitivity level is reduced, and the behavior attention level is improved; if not, the speed sensitivity level and the behavior attention level are kept or adjusted according to the specific movement track type; the speed sensitive level is used for controlling the amplification effect of the risk field on the speed, and the behavior attention level is used for determining the resource allocation priority of the phased-array antenna, so that the system can dynamically adjust the speed sensitive level and the behavior attention level according to different flight path types; therefore, refined assessment of unmanned aerial vehicle risks and adaptive allocation of phased-array antenna resources are realized.

The application provides a kind of satellite-borne GNSS phased array antenna gain stability on-orbit monitoring method, system, the method comprises: obtaining the real-time position information of detection equipment and the beacon position information of beacon source;According to real-time position information and beacon position information, it is judged whether beacon source enters the gain monitoring range of detection equipment;If yes, then the beacon signal sent by the beacon source is tracked by GNSS phased array antenna, and the tracking result is obtained, and GNSS phased array antenna is installed on detection equipment;Based on tracking result, real-time monitoring is carried out on GNSS phased array antenna.The problem that GNSS phased array antenna cannot be monitored in subsequent orbit after being installed on detection equipment and put into operation in the prior art is solved, and because the entire antenna gain monitoring process is carried out in the actual application environment, the gap between the ground darkroom environment and the actual application environment can be reduced, and the influence of the performance change of the receiving antenna on the measurement result is reduced, to ensure the reliability and accuracy of the measurement result.

In an embodiment, a receiver included in a communications system is configured to receive a radio frequency (RF) signal from a phased array antenna, the RF signal comprising at least a portion of a plurality of data beams included in a single channel, generate a plurality of channel signals based on the RF signal. Generating the plurality of channel signals includes separating the RF signal into a plurality of channels in which each channel of the plurality of channels includes at least a portion of a respective subset of the plurality of data beams. The receiver is further configured to decode each data beam of the plurality of channel signals with a respective phase and a respective time delay. The receiver is further configured to output the plurality of data beams of the plurality of channels.

The present invention relates to a modular architecture for transmitting and / or receiving radio frequency (RF) signals using a phased antenna array. A first portion of the RF signal is transmitted / received by a master IC (21) and a second portion of the RF signal is transmitted / received by a plurality of satellite ICs (22). RF distribution between the master IC (21) and the satellite ICs (22) occur over a low-RF-loss interposer (51). The master IC (21) performs upconversion / downconversion between RF signal and a baseband or intermediate frequency signal.

The application provides an AI algorithm-based big data system operation monitoring method and device, and relates to the technical field of communication monitoring. The method comprises the following steps: firstly, collecting real-time position data and performance data of a fixed command center and a plurality of mobile terminals; then, controlling a phased array antenna to scan and receive a return signal based on the real-time position data, so as to generate electromagnetic environment information; next, inputting the information into a generative adversarial network to generate abnormal area information; then, inputting the abnormal area information and the performance data into a graph neural network based on an AI algorithm to construct a correlation graph and calculate the correlation degree between the abnormal area information and the performance data; finally, determining a target area and a correlation node affecting communication according to the correlation degree, and generating an operation monitoring result of the system. The application improves the positioning accuracy and prediction ability of the problem of regional communication performance degradation caused by specific electromagnetic interference in the emergency command big data system.

The invention relates to the technical field of antennas, and discloses a phased-array antenna large-current feed structure, which comprises a frame and at least one connecting copper bar, the frame comprises a first frame body, a second frame body and at least one insulating cover plate, the first frame body is provided with at least one first through hole, the antenna sub-array is provided with at least one group of antenna connecting terminals, and the second frame body is provided with at least one group of second through holes. The second frame body is provided with at least one first through hole and extends into one first through hole, the second frame body is provided with at least one second through hole, the power supply module is embedded in the second frame body, the power supply module is provided with at least one group of power supply connecting terminals which are located in one second through hole, and each insulating cover plate detachably covers one second through hole. Each connecting copper bar comprises a middle section, and a first connecting end piece and a second connecting end piece which are positioned at two ends of the middle section, are parallel to each other and are detachably connected with a group of antenna connecting terminals and a group of power supply connecting terminals respectively. And stable and reliable feeding from the power supply module to the phased-array antenna sub-array in a small space is realized.

The invention provides a rocket phased-array antenna beam control method and device, and relates to the technical field of spaceflight measurement and control, and the method comprises the steps: obtaining the flight pose data of a rocket at the current moment and the working state data of a phased-array antenna at the current moment; determining a beam pointing target value of the phased-array antenna at the current moment based on the flight pose data at the current moment and the spatial position data of the relay satellite; determining a radiation power target value of the phased-array antenna at the current moment based on the flight pose data at the current moment; and generating a beam control instruction of the phased-array antenna based on the beam pointing target value and the radiation power target value at the current moment and the working state data at the current moment, and driving the phased-array antenna to complete beam pointing. According to the method and the device provided by the invention, the rapid, accurate and reliable control of the antenna beam in a complex dynamic environment is realized; the method improves the completion quality and efficiency of a spaceflight measurement and control task, and guarantees the measurement and control demands of the key stage of the spaceflight task.

An antenna unit includes an antenna radiation element and a polarization selection circuit. The polarization selection circuit is configured to selectively convert an input signal to a first output signal and / or a second output signal. The first output signal and / or the second output signal is fed to the antenna radiation element so as to generate linearly polarized electromagnetic waves or circularly polarized electromagnetic waves which are radiated out by the antenna radiation element. The first output signal and the second output signal have a first phase difference therebetween that is fixed at a specific value between 0-180°.

A phased-array optoelectronic emitter includes a laser chip containing a flared laser source and a photonic chip containing phase shifters and elementary transmitters placed in N arms. The photonic chip includes a coupler that ensures optical coupling between the flared laser source and the arms, the coupler having a collection input placed facing the emission surface of the flared laser source and a transmission output comprising N rectilinear waveguides that are coupled to the N arms of the optoelectronic emitter and that are oriented so that their longitudinal axes are secant at a position located in a flared section of the laser source on an optical axis of the laser source.

The invention belongs to the technical field of common-caliber antennas, and discloses a broadband low-profile dual-frequency common-caliber phased array antenna based on metasurface multiplexing, and the phased array comprises a metasurface array and a feed structure located below the metasurface array. According to the common-caliber phased array, the metasurface array is multiplexed, and a * b * e * f (c * d * g * h) metasurface units are utilized to form a radiation structure of a * b low-frequency units and c * d high-frequency units. The array structure is compact, and the frequency ratio can be flexibly adjusted by changing the proportion of the metasurface units. The array feed structure is arranged below the metasurface unit, and high isolation and various polarizations can be realized by changing the feed structure and arrangement of the a * b low-frequency antenna units and the c * d high-frequency antenna units. According to the invention, by multiplexing a set of metasurface array, the common-aperture design of the compact low-profile broadband is realized, and the aperture utilization rate and the scanning range of the array beam are improved.