11 results about "Base station antenna array" patented technology

The present application relates to the technical field of communications, and discloses a base station antenna unit, a base station antenna array, and a base station. The base station antenna unit comprises a dielectric plate, a metal ground plate, a first dielectric resonator, a second dielectric resonator, a dielectric coupling path, and a feeding structure; the metal ground plate and the feeding structure are arranged on two sides of the dielectric plate, respectively, and a cross-shaped slot is formed on the metal ground plate; the first dielectric resonator and the second dielectric resonator are of a symmetrical structure, and the first dielectric resonator and the second dielectric resonator are arranged on the dielectric plate; the dielectric coupling path is arranged on the dielectric plate, located between the first dielectric resonator and the second dielectric resonator, coupled to the first dielectric resonator and the second dielectric resonator, and located above the cross-shaped slot; and the feeding structure has two feeding ports, feeding input by means of different feeding ports excites the cross-shaped slot to generate an orthogonal electric field, and electromagnetic waves of the orthogonal electric field reach the first dielectric resonator and the second dielectric resonator by means of the dielectric coupling path.

The application relates to an uplink-based beam weight determination method, which comprises the following steps: obtaining user equipment measurement data of a target cell and a target cell adjacent area, the user equipment measurement data comprising uplink path loss, time advance and spatial orientation information of a user; constructing an equivalent uplink distance model according to the uplink path loss, the time advance and the spatial orientation information; determining target beam weights of base station antennas based on the equivalent uplink distance model and a gradient-aware particle swarm optimization algorithm, and issuing the target beam weights to a base station antenna array. Through the application, the problem that poor uplink quality is caused by inaccurate beam weights is solved, optimization is directly carried out based on uplink original data, and deviation of uplink performance caused by optimization of downlink data is avoided. The equivalent uplink distance model is constructed, and single optimization dimension and incapability of coping with complex uplink requirements are avoided.

The embodiment of the application provides a kind of based on fluid STAR-RIS's NOMA wireless communication beam forming and position optimization method and device, user decoding configuration is determined by channel gain ordering, beam forming, transmission reflection coefficient and element position are alternately iterated joint optimization by combining semi-positive definite relaxation, successive convex approximation and main minimum framework, and the joint optimization result is issued to base station antenna array, intelligent super surface and element driving mechanism in coordination to complete multi-end closed loop deployment, effectively solve the deficiency of traditional technology in user decoding order configuration, multivariate alternately joint optimization and multi-objective cooperative issue execution, for the beam forming and position joint intelligent optimization of fluid STAR-RIS auxiliary NOMA wireless communication system provide technical support.

The application belongs to the electromagnetic field and microwave technology field, and particularly relates to a common-caliber antenna array with three-frequency and ultra-wideband electromagnetic self-compatibility characteristics. The three-frequency electromagnetic self-compatibility base station common-caliber antenna array comprises a double-frequency self-compatibility low-frequency antenna, a medium-frequency antenna array, a high-frequency antenna array and a three-frequency self-compatibility array reflection floor; the ultra-wideband electromagnetic self-compatibility common-caliber base station antenna array comprises a wideband self-compatibility low-frequency antenna, an ultra-wideband antenna array and a wideband self-compatibility array reflection floor. The medium-frequency antenna array is composed of M1xM1 medium-frequency antenna units with the same structure. The high-frequency antenna array (3) is composed of M2xM2 high-frequency antennas (6) with the same structure. The ultra-wideband antenna array is composed of NxN ultra-wideband antenna units with the same structure. In the application, the working frequency band of the three-frequency electromagnetic self-compatibility common-caliber base station antenna array is 0.79-1.0 GHz, 1.7-2.7 GHz and 3.1-4.1 GHz; the working frequency band of the ultra-wideband electromagnetic self-compatibility common-caliber base station antenna array is 0.69-0.96 GHz and 1.6-3.2 GHz.

The invention relates to a beam weight determination method based on an uplink, and the method comprises the steps: obtaining user equipment measurement data of a target cell and a neighbor cell of the target cell, the user equipment measurement data comprising uplink path loss, time advance and spatial orientation information of a user, and constructing an equivalent uplink distance model according to the uplink path loss, the time advance and the spatial azimuth information, determining a target beam weight of a base station antenna based on the equivalent uplink distance model and a gradient sensing particle swarm optimization algorithm by taking optimization of a statistical value of the equivalent uplink distance as a target, and issuing the target beam weight to a base station antenna array. Through application of the method and the device, the problem of poor uplink quality caused by inaccurate beam weight is solved, optimization is performed directly based on uplink native data, and the deviation of optimizing uplink performance by using downlink data is avoided. And an equivalent uplink distance model is constructed, so that the problem that complex uplink requirements cannot be coped with due to single optimization dimension is avoided.

The application provides a kind of unmanned aerial vehicle airborne phased array antenna adaptive adjustment method, airborne terminal, equipment and medium, it is related to unmanned aerial vehicle technical field, wherein the method comprises: airborne terminal real-time acquisition current network reference signal received power and signal-to-noise ratio;In response to the reference signal received power is higher than or equal to preset threshold value, and the signal-to-noise ratio is lower than preset ideal value, through the beam scanning antenna built-in in airborne terminal, ground-to-air base station transmitting end antenna array beam information is automatically scanned;And, based on the ground-to-air base station transmitting end antenna array beam information adjustment airborne receiving end antenna array beam maximum direction, so that it is aligned with ground-to-air base station transmitting end antenna array beam.The technical scheme provided by the application adjusts airborne receiving end antenna array beam maximum direction based on current network signal strength parameter, so that it is aligned with ground-to-air base station antenna array beam, can guarantee the stable, reliable transmission of unmanned aerial vehicle flight data and service data.

The embodiment of the invention discloses an antenna array, a phase center control method and a base station, the antenna array comprises a plurality of antenna sub-arrays, and each antenna sub-array comprises a multi-mode antenna and a bridge. The bridge is used for respectively inputting two paths of signals from the first input end and the second input end, outputting a first feed signal to the first patch through the first output end, and outputting a second feed signal to the second patch through the second output end; the multi-mode antenna is used for exciting the first patch to radiate a first electromagnetic wave according to the first feed signal and exciting the second patch to radiate a second electromagnetic wave according to the second feed signal. The phases of the two paths of signals are used for controlling the power ratio and the phase difference between the second feed signal and the first feed signal, and the power ratio and the phase difference are used for controlling the position of the phase center of the antenna subarray. According to the invention, equivalent antenna array element position movement is realized, the adjustable speed is improved, the control complexity is reduced, and the ELAA spectrum efficiency is improved.

The application relates to the technical field of wireless communication and radar perception, and provides a millimeter wave through-sensing channel modeling method based on a stacked intelligent metasurface, which comprises the following steps: acquiring millimeter wave near-field propagation parameters between a base station antenna array and a first layer of metasurfaces to construct a near-field channel matrix; constructing an overall equivalent transformation matrix of a multilayer metasurface according to the near-field propagation characteristics between adjacent layers and the phase response of each layer; constructing a broadband time-varying communication channel from a last layer of metasurfaces to a communication user and a double-path return echo sensing channel reflected by a multi-unmanned aerial vehicle target and returned to the last layer; concatenating each section of the channel in the order of communication single-path propagation and sensing double-path propagation, respectively; constructing an end-to-end channel model; deducing analytical expressions of spectral efficiency and detection probability; and realizing flexible balance of through-sensing performance based on a metasurface phase configuration strategy with a compromise weight. The application establishes a complete millimeter wave channel modeling framework covering near-field interlayer propagation, far-field communication and multi-target perception, and provides theoretical support for through-sensing system design.

A filtering antenna relates to an antenna. Comprising a first dielectric plate, a dipole antenna radiator, a low-frequency out-of-band radiation suppression metal connection structure, a dipole orthogonal polarization radiator, a first non-metal slot structure, a rectangular slot structure and a second dielectric plate, the antenna comprises a first Balun floor, a first metal feeder line, a third dielectric plate, a second Balun floor, a second metal feeder line, a first non-metal plug structure, a second non-metal plug structure, a fourth dielectric plate, a second non-metal slot structure, a metal floor, a non-metal circular slot structure, a metalized through hole structure, an annular metal structure and a coaxial feeder line. When one polarization of the antenna is excited, the other orthogonal polarization radiator is used as a polarization filtering device, and good filtering performance can be achieved without using an extra parasitic filtering device. And the out-of-band radiation suppression level is less than-10dB, the frequency roll-off performance is good, and the antenna can be applied to a 5G base station antenna array system.

Disclosed in the embodiments of the present application are an antenna array, a phase center control method, and a base station. The antenna array comprises a plurality of antenna subarrays. Each antenna subarray comprises a multi-modal antenna and a hybrid coupler; the hybrid coupler is used for inputting two signals from a first input end and a second input end, outputting a first feed signal to a first patch by means of a first output end, and outputting a second feed signal to a second patch by means of a second output end; the multi-modal antenna is used for exciting, on the basis of the first feed signal, the first patch to radiate a first electromagnetic wave, and exciting, on the basis of the second feed signal, the second patch to radiate a second electromagnetic wave; the phases of the two signals are used for controlling the power ratio and the phase difference between the second feed signal and the first feed signal, the power ratio and the phase difference being used for controlling the position of the phase center of the antenna subarray. The present application implements equivalent antenna array element position displacement, increases the adjustment speed, reduces control complexity, and improves ELAA spectral efficiency.

The present application relates to a kind of wide frequency band co-aperture base station antenna array based on composite wave-transparent structure, belong to mobile communication technology base station array antenna field.It includes low-frequency antenna, high-frequency antenna and metal floor, wherein, low-frequency antenna is located above high-frequency antenna, the orthographic projection of low-frequency antenna and the orthographic projection of high-frequency antenna have partial or complete overlap on metal floor;Low-frequency antenna is composed of three layers of composite wave-transparent structure, when high-frequency electromagnetic wave irradiates to the composite wave-transparent structure of low-frequency antenna, composite wave-transparent structure is excited, and forms mixed wave-transparent structure;Mixed wave-transparent structure can introduce two or more resonance points, and then introduce wideband transmission window, suppress the shielding effect of high-frequency antenna caused by low-frequency antenna.The present application wide frequency band co-aperture base station array antenna can work in two wideband operating frequency bands, and the unit directional diagram of two frequency bands in array keeps stable, with the advantages of simple structure, easy design, convenient to realize array, low interference and the like.