213 results about "Mimo antenna" patented technology

The invention relates to the technical field of antennas, and particularly discloses a dual-band self-decoupling MIMO antenna based on a mode cancellation method, which comprises a horizontal dielectric substrate, and a first vertical dielectric substrate and a second vertical dielectric substrate which are arranged on the two sides of the horizontal dielectric substrate, an antenna unit is arranged in the middle of the outer side of the first vertical dielectric substrate, and the second vertical dielectric substrate is arranged in the middle of the outer side of the second vertical dielectric substrate. A metal floor is printed on the lower surface of the horizontal dielectric substrate; a first U-shaped gap, a second U-shaped gap and a third U-shaped gap are etched in the middle of one side, close to the first vertical dielectric substrate, of the metal floor, and the first U-shaped gap and the third U-shaped gap are symmetrically arranged relative to the second U-shaped gap; the first U-shaped gap and the third U-shaped gap are the same in size, and the size of the first U-shaped gap is smaller than that of the second U-shaped gap; the two sides, close to the first vertical dielectric substrate and the second vertical dielectric substrate, of the metal floor are provided with clearance areas. According to the invention, low coupling can be realized in two working frequency bands, the occupied space of the antenna is reduced, and the miniaturization of the antenna is realized.

The invention discloses a DDGS feed detection method and system based on wireless transmission, relates to the technical field of intelligent Internet of Things monitoring devices, and aims to solve the problems of incomplete data acquisition, unstable communication link, large sensor data error and inaccurate abnormality positioning in existing DDGS storage yard monitoring. According to the method, channel attenuation is predicted through RSSI and bit error rate data, and signal transmission is optimized in combination with self-adaptive frequency hopping and an MIMO antenna; a blind source separation algorithm is used for inhibiting a multipath effect, and the data accuracy is improved; inertial navigation and UWB distance measurement are fused to realize high-precision positioning, and a thermodynamic diagram is generated to mark an abnormal region; meanwhile, the edge gateway adopts a BP neural network to correct sensor errors, so that the measurement reliability is improved; according to the invention, the monitoring precision, the stability and the real-time performance are obviously improved, and the safety management level of the DDGS storage yard is improved.

The present invention discloses a method for modeling a large-scale MIMO wireless channel in the short-wave band. The specific steps are as follows: 1) Calculate the distance ranges of three short-wave communication propagation modes, and determine the short-wave communication propagation mode in the current environment; 2) Conduct frequency prediction to obtain the current optimal operating frequency; 3) Conduct large-scale channel parameter modeling; 4) Conduct small-scale channel parameter modeling; 5) Conduct space-time-frequency non-stationarity modeling; 6) Analyze the channel statistical characteristics and verify the model. Due to the limited short-wave communication spectrum resources and the severe ionospheric channel conditions, the system rate is relatively low. Most of the existing short-wave channel models are point-to-point small-scale MIMO, and the system rate gain is not obvious. The present invention establishes a method for modeling a large-scale MIMO wireless channel in the short-wave band, which can support communication scenarios with large-scale MIMO antenna configurations and is compatible with three short-wave communication propagation modes. The wireless channel model based on the present invention has guiding significance for the construction and performance analysis of short-wave large-scale MIMO wireless communication systems.

The invention provides a design optimization method and device of an MIMO antenna, equipment and a medium, and belongs to the field of antenna design, and the method comprises the steps: obtaining historical design parameters and corresponding performance indexes of the MIMO antenna; preprocessing the historical design parameters and the performance indexes, constructing a mapping relation between the input data and the output data, and training based on the mapping relation to obtain a forward prediction model and a generation model; and receiving target performance index input, generating a candidate design parameter set by utilizing the trained generation model, performing iterative optimization by taking the candidate design parameter set as an initial population and combining a forward prediction model as an agent model and adopting a multi-objective evolutionary algorithm, and outputting a Pareto optimal solution set as a target design parameter set. Therefore, the performance evaluation link is greatly accelerated by means of the agent model, diversified non-inferior solution selection is provided through Pareto frontier analysis, and different design targets can be flexibly balanced according to actual requirements.

A low-altitude unmanned aerial vehicle cooperative sensing system based on 5G-A communication and sensing integration comprises a plurality of 5G-A communication and sensing integration base stations deployed on the ground, a plurality of low-altitude flight unmanned aerial vehicle nodes and a cooperative sensing dispatching center located on the core network side, and the 5G-A communication and sensing integration base stations are provided with millimeter wave large-scale MIMO antenna arrays integrating communication and radar sensing functions. The unmanned aerial vehicle node is used for transmitting communication signals and sensing detection beams to the air at the same time, the unmanned aerial vehicle node carries a communication sensing fusion terminal supporting a 5G-A air interface protocol, and the terminal comprises a radio frequency receiving and transmitting module, a beam forming processor and a local sensing data caching unit. According to the invention, the millimeter wave large-scale MIMO antenna array of the 5G-A communication and sensing integrated base station is utilized and is divided into the communication sub-array and the sensing sub-array which are independent and controllable, so that the extreme multiplexing of a frequency spectrum and hardware resources is realized, and the communication and the sensing can run in parallel on the same frequency band and the same equipment without interfering with each other.

A cellular base station antenna is provided with a plurality of radiating elements arranged among a plurality of columns disposed over a reflector. In accordance with one embodiment, the first array of antenna elements and second array of antenna elements are arranged across three vertically arranged columns. At least a first array of antenna elements includes at least some of said plurality of radiating elements on each one of the columns operating together to produce a first antenna beam. At least a second array of antenna elements includes at least some other of the plurality of radiating elements on each one of the columns so as to operate together to produce a second antenna beam. As such, each of the three vertically arranged columns include at least some elements from both the first array and the second array.

The invention provides an MIMO (Multiple Input Multiple Output) antenna system of a vehicle-mounted radar, the vehicle-mounted radar and a related layout method. The MIMO antenna system comprises a plurality of transmitting array elements, and the coordinates of the plurality of transmitting array elements in the azimuth dimension are different; a plurality of receiving array elements, wherein the coordinates of the plurality of receiving array elements in the pitching dimension are different; and a plurality of cascaded radio frequency chips, wherein the radio frequency chips are used for respectively providing a transmitting channel and a receiving channel for the transmitting array element and the receiving array element. According to the MIMO antenna system provided by the invention, the azimuth angle resolution and the pitch angle resolution of the vehicle-mounted radar can be improved, the perception capability of the space angle of the vehicle-mounted millimeter wave radar is enhanced, and meanwhile, a relatively long detection distance can be achieved.

A wireless communication device includes a MIMO antenna array with dual-polarized antennas to receive RF signals in vertical and horizontal polarizations across a plurality of frequency bands. The received RF signals are filtered to isolate signals-of-interest, down-converted and digitized to obtain digitized down-converted signals. The wireless communication device includes a processor to concurrently process the digitized down-converted signals based on configuration of multi-link operation (MLO) parameters in the wireless communication device. The processor performs cross-band correlation between the processed digitized down-converted signals of the first intermediate frequency band and second intermediate frequency band to identify related signal patterns. The processor classifies detected signals based on the cross-band correlation, null steering, and an angle-of-arrival information and controls the wireless communication device to trigger an operational response based on the classified signals and the cross-band correlation.

The invention relates to a MIMO antenna system for IEEE 802.11 WiFi communications. The invention also relates to a wireless device, such as a wireless access point (AP), a router, a gateway, and / or a bridge, comprising at least one antenna system according to the invention. The invention further relates to a wireless communication system, comprising a plurality of antenna systems according to the invention, and, preferably, a plurality of wireless devices according to the invention.

A method performed by a Radio Access Network (RAN) node. The method is for assisting a network node in locating a position of a User Equipment (UE) in a wireless communications network. The RAN node comprises a Multiple-Input Multiple-Output (MIMO) antenna system capable of performing beamforming. The RAN node receives (502), on the MIMO antenna system, one or more uplink signals from the UE. The one or more uplink signals comprises one or more out of: a Line of Sight (LoS) signal and one or more non LoS (nLoS) multipath reflections. The RAN node determines (503) an Angles- of-Arrival (AoA) and a Time-of-Arrival (ToA) related to the received LoS signal and each of the nLoS multipath reflections. The RAN node extracts (504), based on a temporal beamforming algorithm the LoS signal and the one or more nLoS multipath reflections, from the one or more received uplink signals. Additionally, the RAN node sends (505) information to the network node. The information comprises one or more out of one or more: determined AoA, determined ToA, extracted LoS signal and extracted nLoS multipath reflections.

Embodiments herein disclose an antenna system comprising a plurality of panel comprising at least one Multiple Input Multiple Output (MIMO) antenna array, including a plurality of microstrip patch antenna elements and stacked patch antenna elements. The microstrip patch antenna elements, configured in a linear array, facilitate a lower operating frequency, while the stacked patch antenna elements, placed atop the microstrip patch antenna elements, achieve a higher operating frequency. The stacked patch antenna elements are connected in series and oriented at a predefined angle of 90° relative to the microstrip patch antenna elements. A panel from the plurality of panels is arranged at a pre-defined angle of 90° relative to an adjacent panel from the plurality of panels for polarization diversity to obtain the multifunctional shared aperture 8N-port MIMO antenna system.

The application belongs to the technical field of antennas, and discloses a coupled resonator decoupling network system applied to MIMO antenna array double-frequency coupling suppression, which comprises a radiating antenna array, a metal floor, a transmission line structure, a single-branch matching network, a three-port double-frequency CRDN structure and a dielectric substrate; the radiating antenna array, the transmission line structure, the single-branch matching network and the three-port double-frequency CRDN structure are printed on the upper layer of the dielectric substrate, and the metal floor is printed on the lower layer of the dielectric substrate; the application has clear principles, mature technology, stable structure, low cost, simple processing technology and is suitable for large-scale production; the application realizes the suppression of mutual coupling of the antenna array in two frequency bands at the same time in a limited space, is suitable for the double-frequency decoupling demand of a compact space multi-antenna system, does not occupy too much additional volume, has low profile and scalability, and can be popularized to different antenna types and other working frequency bands.

The utility model relates to the technical field of antenna discloses a kind of vehicle-mounted stable multipath transmission MIMO antenna, including communication box, the inside fixed connection of communication box has motor, the drive end fixed connection of motor has rotating arm, the one end fixed connection of rotating arm has rotating shaft, the both sides of communication box are fixedly connected with support arm, the one end fixed connection of support arm has rotating column one, the outside fixed connection of multiple rotating column one has same rotating frame, the outside fixed connection of rotating frame has multiple rotating column two, the top fixed connection of rotating shaft has multiple communication lines, the bottom fixed connection of communication box has support plate, the bottom fixed connection of support plate has pasting plate.In the utility model, motor drives rotating arm, rotating shaft, linkage rotating frame adjusts posture, communication line borrows MIMO adaptive signal source.Support arm keeps stable, support plate, pasting plate are used for fixed, and connecting port satisfies multipath transmission.

The invention discloses a vehicle-mounted integrated antenna box, which comprises a shell consisting of a lower shell and an upper shell, and is characterized by further comprising an antenna group arranged in the shell, the antenna group comprises a GNSS antenna, a Main antenna, an Aux antenna, a first MIMO antenna, a second MIMO antenna, a WIFI6e antenna, a V2X antenna and a BT antenna. The GNSS antenna is arranged at one corner of the lower shell, the Main antenna and the Aux antenna are vertically arranged along one side of the GNSS antenna, the BT antenna is arranged at a vertical point, a first MIMO antenna and a second MIMO antenna are respectively arranged above the Main antenna and the Aux antenna, and the Main antenna and the Aux antenna are sequentially provided with two groups of WIFI6e antennas and V2X antennas along two vertical sides. The overall structural design is reasonable, the structure is compact, the four 5G antennas, the two Wi-Fi 6e antennas, the two V2X antennas, the one BT antenna and the one GNSS antenna are integrated in one antenna box, the cost is saved, arrangement of the overall vehicle-mounted antenna system is facilitated, and the antenna is economical, convenient, attractive and high in signal receiving capacity.

The utility model discloses an airborne full frequency band MIMO antenna, including base, cover, first oscillator, second oscillator, third oscillator, fourth oscillator and feed component, first oscillator and second oscillator set up on the base and divide in the front side and the back side of antenna length direction, the working frequency band of first oscillator is 617MHz 960MHz, and the working frequency band of second oscillator is 1452MHz 6000MHz, third oscillator and fourth oscillator set up on the base and divide in the left side and the right side of antenna width direction, and the working frequency band of third oscillator and fourth oscillator is 1452MHz 6000MHz, first, second, third, fourth oscillator passes through feed component and is electrically connected with output connector, and the cover is covered first, second, third, fourth oscillator and is connected with the base, through the layout position and the structure shape of reasonable adjustment each oscillator, guarantee each oscillator to satisfy corresponding working frequency band at the same time, make full frequency band MIMO antenna realize low wind resistance fluid type appearance, satisfy specific use scene requirement.

An apparatus, comprising: a MIMO antenna for transmitting beamformed signals on multiple beams using physical channel resources limited by a common frequency and time; a component for calculating the beamforming gain of each beam in each sub-sector in the coverage area of the multiple beams; a component for determining the beam dominant area of each beam within the coverage area of the multiple beams; a component for determining, within the dominant area of each beam, the average value of the beamforming gains of each other beam that is at least partially co-located within the beam dominant area; a component for determining the inter-beam interference estimate as the average interference of each beam from each of the other beams; and a component for scheduling the transmission of beams by the MIMO antenna on the physical channel resources limited by the common frequency and time based on the inter-beam interference estimate.

The present invention provides a dual-band MIMO antenna assembly and a mobile terminal, including a rectangular ground plane and a dielectric frame disposed around the edge of the ground plane; MIMO antenna units are disposed on the outer sides of both ends of each of the four sides of the dielectric frame, and the MIMO antenna units on both sides of each of the four corners of the dielectric frame are symmetrically distributed along the intersection line of the two sides forming the corner. Through the symmetric arrangement of the 8 MIMO antenna units at the four corners of the dielectric frame, the dual-band MIMO antenna assembly not only has good radiation performance but also has high isolation in the Sub-6G frequency band range, solving the problem of how to make the Sub-6G antenna perform dual-band radiation and ensure its isolation.

The present disclosure provides a method for testing the signal vector error magnitude (EVM) of a multi-channel antenna device, comprising obtaining a test data source comprising multiple streams through preset orthogonal coding; dividing the test data source into multiple channels of the multi-channel antenna device for transmission; wherein the data transmitted by each channel comprises a portion of data from each stream, and the data transmitted by all channels comprises all data from all streams; receiving a composite signal; wherein the preset orthogonal coding enables the composite signal to satisfy the following conditions: after demodulation, the composite signal only obtains data from a specified stream in the test data source; and demodulating the composite signal based on the data from the specified stream to determine the signal vector error magnitude (EVM) of the multi-channel antenna device. The present disclosure also provides a device and medium for testing the EVM of signals of a multi-channel antenna device.

The application discloses a kind of millimeter wave MIMO antennas based on current cancellation model E / H plane decoupling, including metal floor, dielectric substrate, microstrip antenna unit, drainage metal branch, parasitic metal branch and coaxial feed port group composition.Metal floor is printed in the lower surface of dielectric substrate;Multiple microstrip antenna units are printed on the upper surface of dielectric substrate, and are connected with multiple coaxial feed ports respectively;E-plane microstrip antenna unit is respectively loaded with drainage metal branch to realize E-plane decoupling;H-plane microstrip antenna unit is respectively loaded with parasitic metal branch to realize H-plane decoupling.The application can realize MIMO antenna E / H plane simultaneous decoupling, and structure is simple and easy to process, can be applied to millimeter wave MIMO antenna system needing high isolation, and asymmetric millimeter wave MIMO antenna array.

The invention discloses a broadband MIMO (Multiple Input Multiple Output) antenna array for a closed space, which comprises a plurality of antenna plate main bodies, and the antenna plate main bodies are arranged in an annular array along a side ridge; the antenna plate main body comprises a dielectric substrate and an antenna assembly, and the antenna assembly comprises a metamaterial assembly, a director, an excitation arm, a reflector and a balun module; in the direction from the upper end to the lower end of the dielectric substrate, the metamaterial assembly, the director, the excitation arm and the balun module are sequentially distributed in the middle on the front surface of the dielectric substrate, and the reflector is arranged on the back surface of the lower end part of the dielectric substrate; the metamaterial component, the director and the excitation arm are sequentially arranged at intervals, and the excitation arm is connected with the balun module through a microstrip line. The combination of the linear excitation arm and the bent excitation arm is designed, arc induction current is excited on the director to resonate with the rectangular split-ring resonator, and the Yagi antenna has the advantages of widening the bandwidth of the Yagi antenna and improving the gain of the antenna.

This invention belongs to the field of radar technology, and particularly relates to a MIMO antenna array for highway maintenance. It includes antenna modules with transmit / receive channels, two sets of antenna modules scanning simultaneously, and a pair of transmit / receive channels scanning sequentially to form a spatial grid; and a programming module for editing the operating parameters of the antenna elements. The simultaneous scanning of the antenna modules and the sequential scanning of the transmit / receive channels improve scanning efficiency. The programming module, used to edit the operating parameters of the antenna elements, provides more scanning modes suitable for various working scenarios.

The embodiment of the invention relates to the technical field of radio, and discloses a target detection method and device, an integrated circuit, a radio device and a sensor. According to the method, target detection signals are transmitted through transmitting antennas of an MIMO antenna array, and the transmitting sequence of the transmitting antennas is random; receiving an echo signal through each receiving antenna of the MIMO antenna array, and recovering missing data in the received echo signal relative to a signal transmission mode of a single antenna by adopting a compressed sensing algorithm; and subsequently, target detection is carried out based on the recovered signals, and for a transmitting side, due to the fact that the transmitting sequence of each transmitting antenna is random, Doppler and angle coupling disappears; and for a receiving side, the maximum unambiguous velocity cannot be reduced due to a TDM mode, and finally, a target can be accurately estimated by the radar.

The invention, which relates to the technical field of the antenna, discloses a high-frequency MIMO microstrip dielectric phase shifter comprising a printed circuit board, a power divider and a dielectric slide block. The power divider is arranged on the printed circuit board and comprises an input port and two output branches connected with the input port, and the two output branches extend in opposite directions; the medium sliding block is arranged on the printed circuit board in a sliding mode in the extending direction of the two output branches, and the two sides of the medium sliding block in the sliding direction are connected with the two output branches respectively. Based on the technical scheme disclosed by the invention, not only can the phase change continuity of the MIMI phase shifter be ensured and the consistency of each phase of the MIMO antenna be improved, but also the structure is simple, the assembly is easy, the assembly efficiency can be greatly improved, the time cost is saved, the size and weight of the phase shifter can be reduced, and the adaptability is strong.

An embodiment of the present invention provides a test device, a test method and a storage medium for a multi-channel antenna. The test device includes: a radio frequency switch matrix and an amplitude / phase weight switching system; the amplitude / phase weight switching system includes: an amplitude / phase weight control module, a control terminal that sends weight configuration instructions to the amplitude / phase weight control module, and a power supply for supplying power to the amplitude / phase weight control module; the amplitude / phase weight control module is provided with a first radio frequency port and a second radio frequency port; the radio frequency switch matrix is ​​provided with a third radio frequency port and a fourth radio frequency port; the first radio frequency port is correspondingly connected to the third radio frequency port; during testing, the second radio frequency port is correspondingly connected to the radio frequency port of the multi-channel antenna under test; the fourth radio frequency port is used to connect to a vector network analyzer or a directional pattern test system.

The present invention discloses a multi-frequency microstrip MIMO antenna for WiFi / UWB frequency bands, wherein a rectangular metal floor is provided at the bottom of the rectangular parallelepiped dielectric substrate; an improved metal radiator and a microstrip line are provided at the top of the rectangular parallelepiped dielectric substrate. The improved metal radiator is evolved from the following process: an OK-shaped metal radiator is provided at the upper right of the microstrip feeder, and an "L"-shaped metal patch is provided below it. A "T"-shaped metal patch and a rectangular patch are added to the right sides of the bottom and top of the microstrip feeder, respectively; an L-shaped branch is provided on the left side of the microstrip feeder, and a rectangular groove is etched on the top thereof. Finally, the entire radiator is rotated 180° around the center of the dielectric substrate to obtain another part of the metal radiator, and a "Z"-shaped metal patch is added to the middle part of the dielectric substrate; the microstrip feeder is made of metal material, and the microstrip feeder structure is provided with a feeding point. The present invention can cover the 2.40-2.51 GHz and 3.65-9.76 GHz frequency bands, the maximum peak gain of the antenna is 3.62 dBi, the antenna has a simple structure and a small size, and has good practical value in mobile terminal communications.

The invention discloses a multilayer FSS MIMO antenna integrating line circular polarization conversion and decoupling functions, which comprises two layers of dielectric plates and three layers of metal patch layers, the two layers of dielectric plates and the three layers of metal patch layers are formed by mixed pressing, the three layers of metal patch layers and the two layers of dielectric plates are arranged in a staggered manner, and the metal patch layers are in close contact with the dielectric plates; the antenna further comprises a lower dielectric plate, the bottom plate of the lower dielectric plate is provided with a metal ground layer, the surface of the lower dielectric plate is provided with a patch antenna, the metal ground layer is provided with a feed port, and the feed port is communicated with the bottom surface of the lower dielectric plate. The antenna is applied to the sub-6 GHz frequency band, the functions of linear circular polarization conversion and decoupling are achieved at the same time, high isolation can be kept between 3 * 3 patch array antenna units through metasurface loading, directional diagram distortion is improved, efficiency and gain loss are improved, and energy waste is reduced. After linear circular polarization conversion, the polarization mismatch sensitivity of the MIMO antenna can be reduced, the multipath suppression capability of the MIMO antenna is improved, and the channel capacity of the MIMO antenna is expanded.

The utility model discloses a 5G antenna module. The 5G antenna module comprises a housing and an antenna end installed in the housing. The shell comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected, and the antenna end is located in a space formed by the upper shell and the lower shell; the antenna end comprises a circuit board and four groups of antennas mounted on the circuit board and used for receiving / transmitting 5G signals, the four groups of antennas are arranged in a staggered manner, the four groups of antennas are respectively a Main antenna, an Aux antenna, a first Mimo antenna and a second Mimo antenna, the Main antenna and the first Mimo antenna are arranged on one side of the circuit board, and the Aux antenna and the second Mimo antenna are arranged on the other side of the circuit board. And the Aux antenna and the second branch Mimo antenna are arranged on the other side of the circuit board and are parallel to each other. The 360-degree omnidirectional antenna is simple in structure, convenient to install and use, capable of achieving 360-degree omnidirectional signal receiving, good in receiving effect and high in sensitivity, covers the V2X frequency, does not need to add a V2X antenna, and saves cost and antenna space.

A system, method, and apparatus for adaptive signal equalization in an unmanned aerial vehicle (UAV) operating in a dusty environment. The system comprises a first and a second multiple-input multiple-output (MIMO) antenna channel, each orthogonally polarized, for transmitting data over a carrier frequency from the UAV to a target device on the ground. The system includes a dust level sensor configured to measure dust concentration in real time and a signal equalizer device that compensates for dust-induced distortions. The signal equalizer device estimates the impact of dust on the communication link based on the measured dust level, UAV height, and elevation angle, and dynamically adjusts the transmitted signals to eliminate crosstalk between the MIMO antenna channels. The adaptive equalization ensures robust and interference-free communication, maintaining signal integrity despite environmental challenges posed by dust storms or airborne particles.

This invention discloses a method for detecting multi-channel constant-mode signals without prior electromagnetic interference, belonging to the field of radar signal processing technology. The method includes modeling multi-shot data received by a multi-channel antenna array to obtain high-dimensional multi-channel data; introducing weight vectors to project the high-dimensional multi-channel data onto a single channel for dimensionality reduction, resulting in single-channel weighted data; constructing a generalized likelihood ratio test detector without prior spatial electromagnetic interference information based on the probability density functions under two assumptions: the presence and absence of multi-channel constant-mode signals; and building an optimization model based on the generalized likelihood ratio test detector without prior spatial electromagnetic interference information. A hybrid optimization framework combining alternating optimization and alternating direction multiplier methods is used to solve the optimization model, obtaining the detection parameters and completing the multi-channel constant-mode detection.