153 results about "Mimo antenna" patented technology

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 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.

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 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.

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.

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 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 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.

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.

The invention relates to the technical field of antennas, and particularly discloses a high-isolation dual-band MIMO antenna based on a mode cancellation method, which comprises a horizontal dielectric substrate and a vertical dielectric substrate placed on one side of the long edge of the horizontal dielectric substrate, and an antenna unit is printed in the middle of the outer side of the vertical dielectric substrate; a first U-shaped gap, a second U-shaped gap and a third U-shaped gap are etched in one side, close to the 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; a clearance area is arranged on one side, close to the vertical dielectric substrate, of the metal floor. 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 present invention relates to the field of wireless telecommunication and discloses a compact, high-performance, dual-polarized, quasi-omnidirectional Multiple-Input Multiple-Output (MIMO) antenna system for small cell wireless communications. It develops a flexible platform to realize different arrangements of antenna modules for different applications for 3G, 4G, and 5G wireless systems. It includes multi-band dual-polarized antenna arrays operating at 696 MHz-960 MHz, 1695 MHz-2700 MHz, 3300 MHz-4200 MHZ, 5150 MHz-5925 MHz, high gain antenna array modules, feeding networks, power dividers, reflectors, and a radome. The invention adopts a dual-polarized MIMO antenna structure with multiple radiating antenna arrays with high isolation between radiating elements to achieve compact size, good standing wave ratio, high gain, wide operating frequency range, quasi-omnidirectional antenna pattern, and spatial diversity with less interference. In addition, the antenna structure is fully customizable, highly reliable and durable, easy to manufacture, and easy to deploy in the field.

Disclosed herein is a radio frequency (RF) unit and a method of operating the RF unit. The RF unit includes an antenna array, and the antenna array includes a plurality of antenna elements. A first group of the plurality of antenna elements is configured to operate in a first mode, and a second group of the plurality of antenna elements is configured to operate in a second mode. In the first mode, the first group of the plurality of antenna elements is configured to transmit and receive. In the second mode, the second group of the plurality of antenna elements is configured to only receive.

This invention relates to the field of microstrip antenna technology, and more particularly to a tightly spaced MIMO microstrip antenna with adjustable E-plane radiation pattern. The antenna includes main patch elements, a quarter-wavelength impedance transformation line, a feed transmission line, a dielectric substrate, a metal ground plane, a metal ground wall, and a metal strip. Two main patch elements are located on the upper surface of the dielectric substrate with a spacing of 2.58 mm. This invention places a metal strip with etched bends between the two patch elements arranged in the E-plane. The antenna energy is coupled to the metal strip through near-field coupling and excites the gaps, resulting in a combination of gap radiation energy and antenna radiation energy, which modulates the tilted radiation pattern. This achieves side-firing close to the gap antenna elements. Simultaneously, the metal ground wall below the metal strip extends the ground current path, achieving decoupling. This invention improves the isolation between the two tightly spaced patch elements along the E-plane and enables adjustable unilateral radiation patterns, making it suitable for future small MIMO antennas.

The present invention discloses a ray tracing channel modeling method for very large-scale MIMO communication, comprising: setting a simulation scenario and simulation parameters for very large-scale MIMO communication, calculating the coherence distance of the very large-scale MIMO antenna array, determining the selection interval of antenna units in the MIMO antenna array, and selecting antenna units for simulation; performing ray tracing simulation on the selected antenna units according to the reflection and diffraction propagation mechanism to determine the propagation trajectory of the rays, determining the ray path in combination with the receiving end in the simulation scenario, and screening out non-repeating ray paths from the ray paths; mapping the non-repeating ray paths to unselected antenna units in the MIMO antenna array to determine the ray paths of the unselected antenna units; and obtaining the channel characteristics of all antenna units in the MIMO antenna array to realize the construction of a ray tracing channel model for very large-scale MIMO communication.

The invention discloses an on-chip multi-channel antenna with reconfigurable frequency, and belongs to the technical field of microwave and millimeter wave antennas. The antenna is of a single-layer passive structure and comprises a direct feed excitation, a fed parallel coupling line parallel to the direct feed excitation, a gradual change traveling wave line, a uniform traveling wave line and resonance radiation patches arranged at equal intervals. Signals are guided into multiple channels through electromagnetic coupling, crosstalk between the channels is effectively restrained through artificial surface plasmon structure branches, and a local electric field is enhanced. Through wavelength screening of external feed-in signals, the antenna structure can work in different central frequency bands (such as 140 GHz and 220 GHz). The antenna has the advantages of being compact in structure, convenient to feed, high in directional gain, good in process compatibility and the like, and is suitable for radio frequency front-end systems with requirements for multiple frequency bands and high integration level, such as 6G communication and the like.

The invention provides a 6G-oriented unified channel modeling method and device, and relates to the technical field of wireless communication, and the method comprises the steps: constructing a wireless communication scene, configuring a basic parameter and a first parameter of a 6G channel, and obtaining a large-scale parameter and path loss of channel propagation; the first parameters comprise at least one of the stationary region size, the RIS parameter, the target parameter and the sharing parameter of the E-MIMO antenna array, and the sparse K factor in the high frequency band cluster; generating a cluster diameter parameter of the 6G channel or a sub-channel of the 6G channel according to the basic parameter, the large-scale parameter and the channel type; according to the first parameter, generating a second parameter depicting new characteristics of the 6G channel; and according to the second parameter and the cluster diameter parameter, generating a channel coefficient of the 6G channel, the channel coefficient being used for coupling with path loss and shadow fading to obtain a channel impact response of the 6G channel. Therefore, the constructed channel model can describe new 6G characteristics.

A MIMO antenna device includes a front-side dipole antenna and a back-side dipole antenna. Long-side feed parts for hot element are connected respectively to feed points at their long sides. Long-side feed parts for ground element are connected respectively to the feed points at their long sides, and the long sides thereof face the long sides of the long-side feed parts for hot element in parallel with a predetermined interval. Ground elements are respectively arranged point-symmetric to hot elements with respect to the feed points in an offset manner. The front-side dipole antenna and the back-side dipole antenna are arranged such that the front-side feed point and the back-side feed point substantially overlap each other in a top view and that the long-side feed part for front-side is arranged perpendicular to the long-side feed part for back-side.

This invention relates to the field of measurement, control, and training simulation technology, specifically to an interference suppression subsystem, comprising an interference signal feature matching module, a real-time service status monitoring module, an interference signal arrival direction determination module, and an interference suppression execution module. Specifically: the interference signal feature matching module acquires the collected signals from a complex electromagnetic environment simulation and matches the acquired signals with a preset interference feature library to identify the interference signal to be processed; the real-time service status monitoring module queries the current interference to inquire about the service status and triggers an interference suppression request; the interference signal arrival direction determination module uses a multi-channel antenna array to collect the spatial phase difference of the interference signal, obtain the arrival direction parameters of the interference signal, and store this direction information; the interference suppression execution module generates beam weights based on the arrival direction, implements spatial notch filtering, and verifies the effect. Through these methods, the reliability of anti-interference and the accuracy of task simulation are improved.

The invention discloses a clamping antenna enabling low-altitude sensing integration method and a clamping antenna enabling low-altitude sensing integration system. The clamping antenna enabling low-altitude sensing integration method comprises the following steps: determining a system architecture and a system model contained in the system architecture; determining an optimization target; initializing a system model according to the determined optimization target; carrying out antenna clamping position optimization; power and precoding coefficient optimization is carried out; optimizing the power radiation ratio of the clamped antenna; and alternate iteration is carried out to obtain an optimization scheme of the optimal waveguide power and precoding coefficient of the current time slot and the radiation ratio of the clamped antenna power. According to the invention, a low-altitude multi-unmanned-aerial-vehicle communication integrated framework based on a clamping antenna system is constructed, dynamic control of signal radiation and flexible adjustment of near-far field coverage are realized by utilizing the synergistic effect of multiple waveguides and the movable clamping antenna, and the defects that a traditional fixed MIMO antenna array is uneven in coverage and poor in adaptability in a low-altitude complex environment are overcome.

The invention provides a 5G terminal broadband MIMO antenna system adopting a gap and metal through hole loading technology, relates to the technical field of microwave and millimeter wave communication, and solves the problems that in the prior art, multi-mode design still has two main restrictions, in the multi-mode design, the working mode cannot be independently controlled, the design complexity is increased, and in the multi-mode design, the design complexity is increased, and in the multi-mode design, the working mode cannot be independently controlled. The mobile terminal comprises an air layer, so that the technical problem of direct integration with a rear cover of the mobile terminal is solved. According to the technical scheme, four rectangular patches are arranged in a sequential rotation mode. The three modes of TM10, TM01 and TM11 delta are excited by utilizing the gaps and the metalized through holes in the patch. And each patch corresponds to an offset slot and a pair of metalized through holes. The system is high in integration level, simple in structure and low in cost.

Techniques for wireless communication are disclosed. Aspects of the present disclosure relate to PC-FMCW based MIMO sensing operations. In an aspect, an NB phase code scrambling sequence may be associated with different MIMO antenna ports, where the FMCW for each MIMO antenna port is multiplied by the associated NB phase code scrambling sequence for that MIMO antenna port to produce a PC-FMCW. Then, as part of a MIMO sensing operation, each MIMO antenna port may transmit its respective PC-FMCW. Other aspects of the present disclosure relate to the communication of a MIMO sensing capability indication that can be used to determine a sensing configuration for MIMO sensing operations.