278 results about "Mimo antenna" patented technology

The invention discloses a microstrip MIMO antenna with a wide working frequency band and a wide decoupling frequency band, particularly relates to the technical field of microwave and millimeter wave communication, and solves the problems that most of the microstrip MIMO antenna mutual decoupling technologies in the prior art cannot be suitable for multimode broadband MIMO antennas; the technical problems that effective multi-mode mutual coupling suppression can be achieved only by additionally introducing a large-size metal structure or a stacked patch structure in a mutual coupling removal technology suitable for a multi-mode broadband MIMO antenna, and a high-integration-level planar broadband compact low-mutual-coupling MIMO antenna design scheme is lacked are solved. According to the technical scheme, on the basis of a single-layer planar microstrip antenna, a parasitic structure is loaded between two antenna units, and an antenna unit self-decoupling scheme is combined for design; the microstrip MIMO antenna is high in integration level and has a wide working frequency band and a wide decoupling frequency band at the same time.

An apparatus includes a substrate, a first antenna panel, a second antenna panel, and an antenna isolator. The first antenna panel is coupled on the substrate and includes an array of first antenna elements. The second antenna panel is coupled on the substrate and includes an array of second antenna elements. The antenna isolator is coupled on the substrate and including a plurality of walls extending outwardly from the substrate along a length of the substrate between the first antenna panel and the second antenna panel. The antenna isolator reduces reduce wave propagation between the array of first antenna elements and the array of second antenna elements.

Devices and systems for increasing the gain and / or offering multiple antenna frequencies while conserving space on the antenna are provided. According to various aspects of the technology, panels with antenna elements are stacked to create a MIMO antenna array with more antenna elements while conserving space. In some aspects, the antenna elements are the same size and produce the same frequency while their physical configuration increases the gain of the antenna. In alternative aspects, the antenna elements are different sizes and produces different frequencies such that the antenna offers a greater variety or bandwidth of frequencies while conserving physical space on the antenna (i.e., maximizing a total quantity of antenna elements associated with the antenna). Using an antenna system and device with an increased quantity of antenna elements increases one or more of the system capacity, data rates, reliability, gain, coverage range, and the like.

A dual-band, tri-band, or higher-order multi-band array of antenna elements, with each element, or subsets of elements, connected to multiple radios at each antenna port. In one embodiment, an array comprises a 128 element Massive MIMO array having 64 horizontally-polarized (H-pol) and 64 vertically-polarized (V-pol) elements configured to provide dual polarization capability over multiple bands to accommodate highly-configurable simultaneous 4G and 5G operation.

Devices and systems for increasing the gain and / or offering multiple antenna frequencies while conserving space on the antenna are provided. According to various aspects of the technology, panels with antenna elements are stacked to create a MIMO antenna array with more antenna elements while conserving space. In some aspects, the antenna elements are the same size and produce the same frequency while their physical configuration increases the gain of the antenna. In alternative aspects, the antenna elements are different sizes and produces different frequencies such that the antenna offers a greater variety or bandwidth of frequencies while conserving physical space on the antenna (i.e., maximizing a total quantity of antenna elements associated with the antenna). Using an antenna system and device with an increased quantity of antenna elements increases one or more of the system capacity, data rates, reliability, gain, coverage range, and the like.

A MIMO antenna comprises: a substrate; a first feed line and a second feed line formed on the front side of the substrate and spaced apart from each other; a first radiator receiving a feed signal from the first feed line; a second radiator spaced apart from the first radiator by a predetermined distance and receiving a feed signal from the second feed line; a first ground pattern surrounding the first feed line, electrically connected to the ground, and extending in the longitudinal direction of the substrate; a second ground pattern spaced apart from the first ground pattern by a predetermined distance, surrounding the second feed line, electrically connected to the ground, and extending in the longitudinal direction of the substrate; a first connection line connecting the first ground pattern and the second ground pattern in an area adjacent to the first longitudinal ends of the first ground pattern and the second ground pattern.

The invention discloses a multi-frequency transparent MIMO antenna for vehicle-mounted communication, which belongs to the field of vehicle-mounted communication and comprises a dielectric substrate, a first antenna radiation unit and a second antenna radiation unit are symmetrically mounted on the dielectric substrate, and a decoupling structure is arranged between the first antenna radiation unit and the second antenna radiation unit. The first antenna radiation unit, the second antenna radiation unit and the decoupling structure are all located on the same plane of the upper surface of the dielectric substrate. According to the multi-frequency transparent MIMO antenna for vehicle-mounted communication, the transparent material and the MIMO technology are combined, the decoupling effect is good, and the multi-frequency transparent MIMO antenna aims at providing a solution which can meet the requirement for efficient wireless communication and can be seamlessly fused with the surrounding environment, covering of multiple frequency bands can be achieved, and the requirement for multifunctional vehicle-mounted communication is met.

A four element folded slot-based multiple-input-multiple-output (MIMO) antenna for use with CubeSats is described. The MIMO antenna includes a dielectric circuit board, and a metallic layer that covers a top side of the dielectric circuit board and covers a first portion and a second portion of a bottom side. A first meandering slot wraps from the top side, over the first edge and into the first portion on the bottom side. A second meandering slot wraps from the top side, over the second edge and into the second portion of the bottom side. A first feed horn is directed towards the first meandering slot. A second feed horn is directed towards the second meandering slot. A first capacitor is connected to the metallic layer across a slot section of the first meandering slot. A second capacitor connected to the metallic layer across a slot section of the second meandering slot.

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.

This application provides an antenna decoupling structure, a MIMO antenna, and a terminal. The antenna decoupling structure includes a grounding stub and a capacitor structure, where a first end of the grounding stub is connected to an antenna floor, to form an equivalent inductor; and a first end of the capacitor structure is connected to the antenna floor, and a second end of the capacitor structure is connected to a second end of the grounding stub, so that the equivalent inductor and the capacitor structure form an LC resonant structure, where a parameter corresponding to the LC resonant structure meets a decoupling requirement for at least one target decoupling frequency band. Because the resonant frequency depends on the inductance and the capacitance that correspond to the LC resonant structure, antenna miniaturization can be realized by reducing a size of each portion of the decoupling structure.

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.

The invention discloses an unmanned aerial vehicle-mounted MIMO-SAR intelligent information processing device, and the device comprises an MIMO antenna array which is used for transmitting and receiving radar signals at different angles; the signal processing unit is used for performing amplification, filtering and analog-to-digital conversion on the received radar signal; the SAR imaging module is used for generating a high-resolution ground image according to the processed signal; the intelligent information processing module is used for automatically identifying and analyzing a target in the SAR image; the aircraft control module is used for adjusting a flight path and radar parameters so as to optimize the imaging quality; and the data transmission module is used for transmitting the processed data to a ground control center in real time. The device can be suitable for various application scenes including military reconnaissance, topographic mapping, disaster assessment, environment monitoring and the like, has wide adaptability and flexibility, and has high market competitiveness in unmanned aerial vehicle application.

The invention provides a large-breadth sea surface detection and non-uniform resolution intelligent imaging system based on a double-star SAR, and the system comprises a large-breadth sea surface detection system which is used for carrying out the large-breadth sea surface detection based on a collected SAR echo signal; the intelligent imaging system performs non-uniform resolution intelligent imaging based on the detection result of the large-width sea surface detection; the SAR emission subsystem adopts a phased-array antenna to carry out high-gain narrow-beam scanning emission in a range-direction large-width area, and covers a large-range sea surface area; the SAR receiving subsystem adopts a multi-channel antenna to carry out wide-range parallel receiving on echo signals; the SAR receiving subsystem is configured with a DBF processing module and a resource management and control processing module; and the SAR emission subsystem carries out signal emission based on the antenna beam parameters and the emission signal parameters fed back by the resource management and control processing module. The invention has the advantage of high echo power density, and can effectively reduce the requirement on the sensitivity of a receiving system.

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.

An apparatus can include a substrate, a first antenna panel, a second antenna panel and a wall isolator. The first antenna panel can be coupled on the substrate and comprising an array of first antenna elements. The second antenna panel can be coupled on the substrate comprising an array of second antenna elements. The wall isolator can be coupled on the substrate. The wall isolator can include a first EBG element and a second EBG element. The first EBG element can be positioned along an edge of the first antenna panel for a length of the substrate and configured to reduce surface wave propagation from the array of first antenna elements. The second EBG element can be positioned along an edge of the second antenna panel for a length of the substrate and configured to reduce surface wave propagation from the array of second antenna elements.

The invention relates to the technical field of radar antennas, and provides a filtering antenna and an antenna system for a vehicle-mounted millimeter wave radar, the filtering antenna comprises a microstrip array antenna structure, a parasitic branch filtering structure and a feed transmission line, and the parasitic branch filtering structure is connected with the microstrip array antenna structure through the feed transmission line; a parasitic stub filtering structure of a short stub is added to a single side of the antenna, and a fan-shaped patch structure is arranged to form an adjusting circuit capacitive element by changing the radius of an open circuit fan-shaped stub structure; an inductive adjusting element is formed by combining a microstrip structure and a ground connection copper-clad hole, high-frequency coupling signal filtering is achieved, the influence on the amplitude and phase performance of the microstrip array antenna structure is small, more MIMO antenna channels are arranged on a low-cost and small-size radar PCB, meanwhile, the problems that coupling is serious and isolation is poor between the antenna channels are solved, and the antenna performance is improved. A miniaturized and high-isolation millimeter wave radar MIMO technology is realized, and the isolation between MIMO antenna channels of the whole board can be improved to 30 db or more.

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.