91 results about "Mimo antenna" patented technology

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.

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 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.

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.

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 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.

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.

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.

A method of a base station according to one embodiment of the present invention may comprise the operation of determining a VR to be allocated to a terminal in an XL-MIMO antenna panel based on service-related information and an RSRP for each representative antenna such that the terminal is located in a far field or a near field distinguished by a VR size reference value.

This invention discloses a high-isolation, low-profile, miniaturized omnidirectional MIMO antenna based on parasitic stubs, belonging to the field of antennas. The antenna has a centrally symmetric structure, consisting of two irregularly shaped PIFA antenna elements and an "S"-shaped parasitic stub. The irregular radiating surface of the irregularly shaped PIFA antenna elements is obtained by chamfering a rectangular radiating surface, and the chamfer creates a gap between the irregular radiating surfaces of the two irregularly shaped PIFA antenna elements. The "S"-shaped parasitic stub is arranged parallel to the metal ground plane and the irregularly shaped radiating surface, with the oblique stub in the middle parallel to the chamfered edge of the irregularly shaped radiating surface. This invention, by chamfering the radiating surface and loading an "S"-shaped parasitic stub, suppresses the coupling of the binary PIFA array, improves the isolation of the binary PIFA array, and ensures the reliability of the MIMO system.

A low-profile, highly isolated, ultra-wideband multiple-input and multiple-output (MIMO) antenna for use in a distributed antenna system includes: (a) a feeding circuit on a dielectric substrate that includes a coplanar waveguide (CPW) including a signal feed and a return that includes first and second return sections coplanar with and apart from the signal feed; (b) first and second radiator circuits including first and second monopole radiators, respectively, the first and second return sections being coplanar with and spaced apart from the first monopole radiator; (c) a decoupling circuit, disposed on a first side of the dielectric substrate, that includes a conductive strip for reducing mutual coupling between the first and second radiator circuits; and (d) a matching circuit including a plurality of stubs disposed on a second side of the dielectric substrate opposite the first side, the matching circuit being operable to reduce return loss of the MIMO antenna.

The application discloses a three-dimensional implantable MIMO antenna for biological telemetry, which is suitable for capsule endoscopy and leadless pacemaker. The system is composed of four antenna units, each unit including a radiation patch, a ground plane, a feed port and a short circuit structure. The symmetric topology of the radiation patch and the strategic layout of the feed / short circuit needles realize self-decoupling, which can effectively reduce the mutual coupling without external decoupling elements. The antenna can work stably at 1.3975 GHz and 2.45 GHz frequency bands, and keep good reflection coefficient, gain and radiation pattern under different tissue environments and implantation depth changes. SAR evaluation shows that it meets the IEEE C95.1-2019 standard, ensuring safety. The three-dimensional structure provides multi-directional radiation diversity, realizing isotropic coverage and robust communication. High-speed telemetry experiments show that it can support up to 100 Mbps data transmission within 10-15 m, which is suitable for complex environments such as continuous motion, attitude change and deep implantation, realizing robust communication and efficient energy transmission.

The invention specifically relates to a rapid three-dimensional near-field imaging method based on a millimeter wave MIMO antenna array system, and the method comprises the steps: selecting a scene center as a reference point in a first stage, and carrying out the conversion from multiple stations to a single station; then, a coarse imaging result of the whole scene is generated by applying 3D-RMA; in the second stage, the imaging scene is divided into blocks, and fine imaging results of all target positions are obtained by applying a 2D-RMA slicing algorithm with fast calculation for several times. The invention aims to solve the problems that the storage burden of high-dimensional data is reduced, the imaging quality is ensured, the calculation complexity is greatly reduced, the approximate error of a reference point is eliminated, the problem of near-field defocusing caused by far-field hypothesis failure is solved, and the near-field three-dimensional real-time focusing imaging is realized.

The application discloses a beamforming method of a holographic MIMO antenna array based on a steering vector, and under the condition that a user end position is unknown, multiple code words are constructed based on the steering vector through the combination of the pitch angle and the azimuth angle of the user end relative to the antenna array, a code word with the maximum gain of a receiving end is selected from the code words according to the feedback of the user end, and the code word is used as the optimal transmitting or receiving coefficient of the antenna array. The user end only needs to feed back the corresponding information in sequence, the requirement for the feedback time delay is slightly low, the error code of the feedback information has a certain fault tolerance, the time complexity is relatively low compared with the exhaustive search method, the performance is good, the outdoor channel changing rapidly can be well responded, the robustness to the channel fluctuation is higher, and the overall power gain is improved. Moreover, under the condition that the user end position is known, the transmitting or receiving coefficient of the antenna array can be directly determined.

The embodiment of the utility model provides an antenna assembly and terminal equipment. The antenna assembly comprises a first circuit board; the projection of the second circuit board on the first circuit board is located in the first circuit board, and the second circuit board is erected on at least one side face of the first circuit board; the antenna comprises a first circuit board, a second circuit board and at least four first antennas, each first antenna is an MIMO antenna, the working frequency bands of the first antennas are the same, and four first antennas in the at least four first antennas are arranged on the second circuit board. The four first antennas in the at least four first antennas are independently arranged on the smaller second circuit board instead of being all arranged on the main board, namely the first circuit board, so that the number of the MIMO antennas is increased, no extra area is occupied, the isolation between the antennas can be improved, the number of the antennas is increased, and the antenna capacity and the antenna performance are further improved; and the space can be reasonably utilized.

This invention discloses a transmission encryption method and system based on massive MIMO (Multi-Site Array) technology. This invention incorporates the physical transmission process of MIMO into the entire encryption process. By processing the message and using precoding within the MIMO system, the information transmitted through the corresponding physical channel becomes difficult for eavesdroppers to decrypt, while legitimate recipients can obtain the transmitted information normally. The main innovation of this invention is the ingenious integration of the physical transmission process of MIMO and existing MIMO technology into the entire encryption algorithm to ensure the security and correctness of the entire cryptographic algorithm, greatly reducing the complexity of the encryption process.

The invention provides an ultra-wideband multi-port MIMO antenna based on asymmetric coplanar waveguide feed, which relates to the technical field of antennas and comprises a dielectric substrate, a plurality of radiation units and a plurality of grounding planes, the radiation units and the grounding planes are equal in number and are arranged in a one-to-one correspondence manner. Each radiation unit is arranged on the upper surface of the dielectric substrate; each grounding plane is arranged on the lower surface of the dielectric substrate; the radiation units are orthogonally and vertically arranged in sequence; the radiation unit comprises a micro-strip feeder line and a radiator; the radiator comprises a first patch structure, a first semicircular patch and a second semicircular patch; the first patch structure comprises a third semicircular patch and a rectangular patch; the first end of the micro-strip feeder line is connected with the signal input port; and the second end of the microstrip feeder line is connected with the radiator. The problem of balance among miniaturization, broadband and high isolation of an existing antenna is solved, and the antenna has the advantages of being compact in size, wide in bandwidth coverage, excellent in isolation performance and the like.

The invention discloses a mobile phone signal enhancement method based on multi-channel adaptive beam forming, and relates to the field of mobile phone signal processing, and the method comprises the steps: collecting a multi-band signal through a multi-channel antenna array, carrying out the preprocessing of the multi-band signal, recognizing the interference through a deep learning model, and adjusting the beam null; estimating a signal incoming wave direction in real time based on a MUSIC algorithm, optimizing a beam weight through a dynamic subspace beam forming algorithm, and realizing target signal enhancement and interference suppression; a power normalization factor is introduced to fuse a multi-channel signal, and output stability is ensured by combining post-processing and quality evaluation. The mobile phone signal enhancement method based on multi-channel adaptive beam forming solves the problems of weak anti-interference and poor multi-band adaptation of a traditional method, is strong in dynamic anti-interference capability, remarkable in signal gain in a complex environment, multi-band collaborative enhancement, adaptive to full-scene communication requirements, improved in signal gain, improved in comprehensive SNR (Signal to Noise Ratio), and high in robustness. The method is suitable for mobile phone signal enhancement in a complex electromagnetic environment and a mobile scene.

The invention discloses a high-isolation E-plane arrangement MIMO antenna, which comprises a first dielectric substrate and a second dielectric substrate, and is characterized in that the first dielectric substrate is superposed on the second dielectric substrate; the upper surface and the lower surface of the first dielectric substrate are respectively provided with a first copper-clad layer and a second copper-clad layer, the first copper-clad layer is provided with a metasurface radiation structure formed by two same rectangular patch units side by side, two rows of rectangular patches in the middle of the metasurface radiation structure are provided with decoupling probes, the metasurface radiation structure is connected with the second copper-clad layer through the decoupling probes, and the decoupling probes are connected with the second copper-clad layer through the first copper-clad layer and the second copper-clad layer. The second copper-clad layer is provided with a coupling gap and a decoupling gap, the lower surface of the second dielectric substrate is provided with a third copper-clad layer, and the third copper-clad layer is provided with a first feed network and a second feed network. According to the invention, broadband high-isolation decoupling between two metasurface antennas arranged at a zero interval can be realized, the unit directional diagram is stable, the maximum radiation direction does not deflect, the structure is simple, the profile is low, the integration level is high, and the metasurface antenna has a good application prospect.

Methods and apparatuses for channel state information reporting in advanced MIMO antenna systems is provided. The method comprises: receiving information for an analog beam and an R CSI-RS resources; constructing an analog beam codebook; deriving sets of PMIs corresponding to analog beams, wherein each set of R sets of PMIs corresponds to an analog beam of the analog beams associated with the R CSI-RS resources; identifying a set of digital beams corresponding to each of the analog beams; identifying a set of hybrid beams corresponding to each of the R CSI-RS resources, wherein the set of the hybrid beams comprises the set of digital beams and the analog beam, respectively; identifying a subset of the set of hybrid beams using an index to generate a PMI corresponding to the analog beams; and transmitting a CSI report including the PMI and the subset of the set of hybrid beams.

The application provides a radar package antenna layout structure and a millimeter wave radar, comprising: a package antenna substrate; a multiple-input multiple-output (MIMO) antenna array arranged on a top layer of the package antenna substrate, the MIMO antenna array comprising a transmitting antenna array and a receiving antenna array; a metal isolation strip arranged between the transmitting antenna array and the receiving antenna array; and an electromagnetic bandgap structure array group arranged between transmitting antenna units in the transmitting antenna array, each electromagnetic bandgap structure array in the electromagnetic bandgap structure array group comprising a plurality of electromagnetic bandgap structure units, and a short side of each electromagnetic bandgap structure unit being arranged perpendicularly to an electric field radiation plane of the transmitting antenna unit. The application solves the problem of a decrease in isolation caused by a compact layout.