31 results about "Beam tilt" patented technology

The application provides an electrically-controlled beam scanning leaky-wave antenna and a communication device. The leaky-wave antenna comprises a gap waveguide including a strip-shaped ridge, the gap waveguide being used for transmitting electromagnetic waves in the form of a traveling wave, the strip-shaped ridge being arranged in the gap waveguide along a transmission direction of the electromagnetic waves; and a plurality of radiation units arranged on a side wall of the gap waveguide, each of the radiation units comprising a radiation slot and an electrically-controlled switch, the radiation slot being used for leaking electromagnetic waves in the gap waveguide to a free space to form a beam, and the electrically-controlled switch being used for controlling an operating state of the radiation slot to realize beam scanning. The leaky-wave antenna provided by the application can improve the beam tilting characteristics of the antenna and improve the communication quality of the antenna.

The invention discloses a wide-angle scanning phased-array antenna, which comprises a metal floor and a beam splitting lens spaced from the metal floor, a beam inclined array element group is arranged between the metal floor and the beam splitting lens, the beam inclined array element group comprises even number of beam inclined array elements arranged at intervals, and every two beam inclined array elements are arranged in a mirror image manner relative to the center line of the metal floor; the metal floor is connected with a feed mechanism, and the feed mechanism is connected to the beam inclination array element. According to the phased-array antenna, the beam inclined array element of a mirror symmetry structure is adopted, the beam splitting lens is arranged above the beam inclined array element, a beam generated by the beam inclined array element forms a new beam at a low elevation angle through the beam splitting lens, the gain at the low elevation angle is improved during beam scanning, and the beam scanning efficiency is improved. A 3dB scanning range of-83 degrees to + 83 degrees is realized in a working frequency band of 5.7-6.3 GHz, the coverage breadth of a modern communication and radar system is expanded, the beam splitting lens also plays a role of a matching layer, and the maximum gain of the phased-array antenna is improved.

Disclosed is an antenna having a plurality of radiator columns and an integrated phase shifter / calibration board. The radiator columns have radiator clusters that may be differentially phase to provide beam tilt. The input traces of each of the phase shifters is capacitively coupled to a Wilkinson power divider that sums the power of all the input signals, thereby providing a calibration function. The output traces of each of the phase shifters has a designated meander pattern that provides phase alignment for all the output signals to prevent phase mismatches between signals fed to the radiator clusters.

This invention relates to the field of aircraft antenna technology, and discloses a low-tilt, wide-beam, high-gain, low-profile aircraft antenna, comprising a rectangular waveguide body, a radiating aperture, a beam modulation control, and a protective structure. The radiating aperture is the open end of the rectangular waveguide body, the beam modulation control is located at the radiating aperture, and the protective structure covers the rectangular waveguide body and the radiating aperture. The rectangular waveguide body is a highly compressed structure. This invention solves the problems of high beam tilt, narrow beamwidth, and low antenna gain commonly used in microstrip antennas for aircraft, and features low tilt, wide beam, high gain, and low profile, which can greatly improve the widespread use of low-tilt, wide-beam, high-gain, low-profile antennas in various aircraft.

Disclosed is an antenna having a plurality of radiator columns and an integrated phase shifter / calibration board. The radiator columns have radiator clusters that may be differentially phase to provide beam tilt. The input traces of each of the phase shifters is capacitively coupled to a Wilkinson power divider that sums the power of all the input signals, thereby providing a calibration function. The output traces of each of the phase shifters has a designated meander pattern that provides phase alignment for all the output signals to prevent phase mismatches between signals fed to the radiator clusters.

The invention discloses a dual-polarization Fabry-Perot antenna with a partial reflection coating layer. The dual-polarization Fabry-Perot antenna comprises a partial reflection coating layer structure, a switch insertion piece and a feed source antenna structure, the partial reflection coating layer structure comprises a first dielectric substrate, a container and a metal patch, an air cavity is arranged between the first dielectric substrate and the feed source antenna structure, a cut-off position is arranged on the feed source antenna structure, a plurality of water injection channels are arranged on the container array, any water injection channel is connected with a plurality of small units which can be independently controlled, and any small unit is provided with a switch insertion piece. The diode is added at the cut-off position of the metal feeder line, the working polarization of the antenna is switched by adjusting the conduction state of the diode, water is injected into the specific area of the partial reflection coating layer to realize phase distribution adjustment, and non-uniform phase distribution is introduced, so that the beam of the antenna is deflected, and beam inclination is generated; the reconfigurable radiation pattern is achieved, and the current situation that a traditional resonant cavity antenna is single in radiation pattern and few in working scene can be effectively solved.

Coordinated signal processing at at least a first and second transceiver integrated circuit (IC) configured to commonly process aggregated signal-port IQ data packets; and, each transceiver IC having a transmit signal processing circuit configured to process the commonly-processed aggregated signal-port IQ data packets in accordance with frequency-specific beam-tilt information received in control message packets. The frequency-specific electronic beam tilt may be applied to either a designated component carrier, or to a designated subset of subcarriers within a given component carrier.

This invention discloses a high-efficiency dual-polarized array antenna with stable beam tilt angle, belonging to the field of antenna engineering technology. To eliminate the requirement for an additional phase-shifting feed layer, four novel array elements with phase-shifting capabilities are introduced. By combining two different feed baluns (Marchand balun and direct-feed balun) and two different dipoles (traditional and novel dipoles) in pairs, and by rotating the feed balun by 180°, four relative phase states of 0°, -90°, -180°, and -270° are achieved. Good impedance matching and a stable beam of 23 degrees are achieved in the 3.35GHz-3.9GHz range. The in-band reflection coefficient is less than -10dB, the beam tilt angle change is less than 1 degree, and the overall efficiency at the center frequency reaches 94.3%. The proposed array antenna has advantages such as integration, high efficiency, stable beam, and low cost, and can be better applied in various scenarios such as base stations.

The invention discloses an efficient dual-polarization array antenna with a stable beam inclination angle, and belongs to the technical field of antenna engineering. In order to eliminate the requirement on an additional phase shift feed layer, four types of novel array units with a phase shift function are introduced. Two different feed baluns (Marchand baluns and straight feed baluns) and two different dipoles (traditional and novel dipoles) are combined in pairs, and the feed baluns are rotated by 180 degrees, so that four states of relative phases of 0 degree,-90 degrees,-180 degrees and-270 degrees are realized. And good impedance matching and a 23-degree stable wave beam are realized in a range of 3.35 GHz to 3.9 GHz. The in-band reflection coefficient is less than-10dB, the beam inclination angle change is less than 1 degree, and the total efficiency of the center frequency is as high as 94.3%. The array antenna provided by the invention has the advantages of integration, high efficiency, stable wave beam, low cost and the like, and can be better applied to various scenes such as a base station and the like.

This application discloses a multi-base station networking method, positioning method, and apparatus for unmanned aerial vehicles (UAVs), relating to the field of UAV networking and positioning technology. The multi-base station networking method includes: dividing each base station into multiple cooperative sensing groups based on the location of each base station in the area to be networked, and determining multiple sectors of each base station in each cooperative sensing group according to the requirements of airspace layering; acquiring echo signal data of each UAV in the area to be networked based on each cooperative sensing group, determining the first horizontal distance of each UAV, and determining the first horizontal distance and target altitude of the corresponding UAV by combining a fusion network model; calculating the theoretical beam tilt angle of each sector of each base station, and constructing a tilt angle optimization function with the minimum overlap range and blind zone range of the sector coverage as the optimization objective to optimize the theoretical beam tilt angle and obtain the actual execution tilt angle; and constructing a network for each base station and each UAV based on the actual execution tilt angle of each sector of each base station.

Transceiver integrated circuit (IC) subarrays, each transceiver IC subarray comprising at least a first transceiver IC and a second transceiver IC physically arranged in a subarray: the transceiver ICs configured to process series of commonly-processed aggregated signal-port IQ data packets in accordance with (i) beam-tilt information received in control message packets and (ii) the subarray position of the transceiver ICs, using one or more signal processing techniques to achieve electronic beam tilt selected from the group consisting of: (i) applying an incremental phase rotation to each subcarrier frequency-domain IQ data point (via, e.g., an NCO), (ii) applying a constant phase rotation to each subcarrier frequency-domain IQ data point (e.g., via a complex multiplication), (iii) applying a constant phase rotation to each sample of the baseband time domain signal (e.g., via a complex multiplication), and (iv) imposing time delays in the discrete time domain signals of the transmit baseband signals.

Multi-band electronic beam tilt for distributed amplifier antenna array. A first set of phase adjustment circuits within a low-power first-band RF transmit distribution network applies a first-band electronic beam tilt to a first-band RF transmit signal. A second set of phase adjustment circuits within a low-power second-band RF transmit distribution network applies a second-band electronic beam tilt to a second-band RF transmit signal. A first set of phase-adjusted first-band RF transmit signals is received at a set of RF front end modules that are distributed along an antenna array column. A second set of phase-adjusted second-band RF transmit signals is received at the set of RF front end modules. A set of subarrays of at least one radiating element is distributed along the antenna array column. Each subarray is connected to and positioned substantially adjacent to a corresponding RF front end module of the set of RF front end modules.

The application discloses a millimeter wave polarization and pattern reconfigurable antenna and belongs to the field of radio frequency front-end devices. The millimeter wave polarization and pattern reconfigurable antenna is composed of symmetrical rectangular radiation patches, a half-circle defect, a quarter-circle defect and a rectangular branch loading located on the radiation patches, an orthogonal two-way feeding network, a T-shaped power division feeding network, a composite beam ohmic contact type MEMS switch, a direct current bias line, a test patch pad, a coplanar waveguide, a gradual matching structure, a dielectric substrate and a metal ground back plate. When unilateral MEMS switches on the T-shaped power division feeding network are turned on, energy flows to the radiation unit on the side, and the beam tilting effect to the left or the right can be realized. When the MEMS on both sides are turned on, the radiation pattern is directed to the Z positive axis, and there is no beam deflection, and accordingly, the pattern reconfigurable function of three directions, i.e. left, middle and right, can be realized. When the switches on the orthogonal two-way feeding network are turned on, the size of the long line can realize 90° phase delay, two orthogonal degenerate modes are combined to form circularly polarized waves, and complete half-power beam width is covered.

The utility model discloses a vehicle-mounted array antenna, including circuit board, two antenna modules (contain four radiating parts), through the phase difference of 0-180 degrees between two radiating parts, the pointing of electromagnetic field beam can be controlled, thereby realizes the beam angle regulation. Specifically to the vehicle-mounted scene, the beam tilt adjustment of electromagnetic field can be realized, makes the beam slanting downward radiation, covers the area of person close to the vehicle. Through the signal of 160-200 degrees phase difference between two antenna modules, the current flowing to two antenna modules respectively can be made homodromous, avoids the electromagnetic field beam cancellation phenomenon of two antenna modules. The coupler adopts the arrangement and folding design mode, can reduce the space occupation to the circuit board, is favorable to the miniaturization design of circuit board. Through the power division network formed by total power divider, first power divider, second power divider and the array antenna formed by four radiating parts of symmetric or relative symmetric setting, the uniform field shape of electromagnetic field beam tilt and omnidirectional coverage is realized finally.

The application discloses a multi-beam tilting array surface and a two-dimensional direction finding method. The array surface comprises a plurality of elevation sub-arrays and a DBF beam forming and processing network. The elevation is analog synthesized. Each elevation sub-array has independent elevation beam scanning control. After the elevation is synthesized, the elevation sub-array is connected to the rear-end beam forming and processing network. The application can eliminate the azimuth direction finding error caused by the conical effect under the high elevation condition, and solve the problem that the edge beam elevation angle deviates downward due to the array surface tilting, so that when the target enters from the low elevation and the large azimuth angle, the target may fall into the edge beam null depth, and the system direction finding is affected.

The invention provides a micro-nano phase shifter, a manufacturing method thereof and an antenna device, and relates to the technical field of communication. The micro-nano phase shifter comprises a substrate base plate; the driving structure is supported on the substrate body; the at least one group of transmission lines are positioned on the substrate body; the at least one pair of phase shift lines are suspended and are connected with the driving structure; and two end parts of each phase shift line respectively cover at least part of the corresponding first transmission line and at least part of the corresponding second transmission line. According to the invention, the positions of at least one pair of phase shift lines are adjusted through the driving structure, so that the electromagnetic waves output by the second output port connected with the first phase shift line have different phase advance, and the electromagnetic waves output by the second output port connected with the second phase shift line have different phase lag. And on the basis of the arbitrary adjustment of the positions of the at least one pair of phase shift lines, the continuous adjustment of the inclination angle of the electromagnetic beam can be realized, so that the scanning precision is improved.

This invention relates to the field of millimeter-wave broadband wireless communication and is a channel estimation method for broadband millimeter-wave MIMO-OFDM systems based on beam tilt effect. It includes the following steps: (1) constructing a model of the MIMO-OFDM system; (2) modeling the channel estimation cost function, reformulating the system model for each subcarrier as a frequency-dependent sparse signal recovery problem; (3) updating the channel gain and noise variance; (4) updating the signal covariance matrix; (5) updating the angle estimate; and (6) reconstructing the channel for each subcarrier using a low-complexity algorithm to obtain high-precision channel estimation results. Compared to traditional schemes, this method achieves more accurate channel estimation results while maintaining acceptable computational complexity.

Aspects presented herein may enable a network node (e.g., a UE, a TRP / base station) to provide its beam squint information and / or to receive beam squint information of another positioning entity to improve the accuracy and reliability of UE positioning. In one aspect, a network node obtains beam squint information associated with a set of beams of the network node under a plurality of center frequencies. The network node transmits, for a network entity, the beam squint information for at least one beam of the set of beams for a positioning session. The network entity participates, based on the beam squint information via the at least one beam, in the positioning session with the network entity.

The invention relates to the technical field of high-power optical fiber laser, and provides a high-power optical fiber laser array light beam tilt aberration detection and correction system which comprises a main laser, a tilt aberration correction and collimation module, a spectroscope, a probe laser, an optical fiber beam splitter, a (6 + 1) * 1 optical fiber beam combiner, an optical fiber wavelength division multiplexer, a self-adaptive optical fiber collimator and an optical flat plate. The device comprises a photoelectric detector, a control module, a dual-wavelength design of a main laser with a wavelength of lambda1 and a probe laser with a wavelength of lambda2, an internal parallel reference is established and maintained on line by using the probe laser with the wavelength of lambda2, and the inclination deviation of the main laser is detected by using the reference. The system is simple in structure, high in stability and better in operability, and an existing fiber laser array does not need to be modified.

The present application relates to the technical fields of high-power fiber laser, and provides a kind of high-power fiber laser array beam tilt aberration detection and correction system, including main laser, tilt aberration correction and collimation module, beam splitter, probe laser, fiber beam splitter, (6+1) fiber combiner, fiber wavelength division multiplexer, adaptive fiber collimator, optical flat, photoelectric detector, control module, using the dual-wavelength design of main laser with wavelength λ1 and probe laser with wavelength λ2, using probe laser with wavelength λ2 to establish and maintain internal parallel reference online, and using this reference to detect the tilt deviation of main laser.The system has simple structure, strong stability, does not need to modify existing fiber laser array, and is more operable.

The present invention discloses a wide-angle scanning phased array antenna, comprising: a metal floor, a beam-splitting lens spaced apart therefrom, and a beam-tilt array element group disposed between the metal floor and the beam-splitting lens. The group includes an even number of spaced-apart beam-tilt array elements, each mirror-imaged relative to the centerline of the metal floor. The metal floor is connected to a feeding mechanism, which is connected to the beam-tilt array elements. The phased array antenna employs beam-tilt array elements with a mirror-symmetric structure, and a beam-splitting lens is disposed above the beam-tilt array elements. The beam generated by the beam-tilt array elements is transformed into a new beam at a low elevation angle by the beam-splitting lens, thereby improving the gain at low elevation angles during beam scanning. Within the operating frequency band of 5.7-6.3 GHz, a 3dB scanning range of -83° to +83° is achieved, expanding the coverage of modern communications and radar systems. The beam-splitting lens also acts as a matching layer, increasing the maximum gain of the phased array antenna.

The application provides a beam tilting antenna, and relates to the technical field of antennas.The beam tilting antenna comprises a cavity, a cover plate, a radiator and a coaxial line, the top of the cavity is provided with an opening, the cover plate is arranged at the top opening of the cavity and closes the cavity, the radiator is arranged in the cavity and is electrically connected with the cavity, the first hollow area is arranged on the radiator, the first bevel and the second bevel are arranged on the radiator, the first bevel is inclined relative to the second bevel, the second hollow area is formed between the first bevel and the second bevel, the first hollow area and the second hollow area are communicated and form a feed gap, the outer conductor of the coaxial line is connected to one side of the feed gap, and the inner conductor of the coaxial line is connected to the other side of the feed gap, the beam tilting antenna can form an inclined beam, has a simple structure and a large bandwidth.

A base station device according to the present invention comprises: a beam squint estimation unit that estimates a beam squint on the basis of a reference signal for estimating the beam squint or a theoretical formula of an array factor, and that, on the basis of the estimated beam squint, estimates an optimal beam at a frequency other than a specific frequency used for estimating the beam squint; and a data transfer instruction unit that, during data transfer, instructs the data transfer using optimal beams corresponding to the frequencies respectively allocated to terminal devices, on the basis of the optimal beam for each frequency estimated by the beam squint estimation unit.　

This application proposes multi-beam antenna systems using spherical lens with high isolation between antenna ports and compatible to 2×2, 4×4, 8×8 MIMO transceivers. Several compact multi-band multi-beam solutions (with wideband operation, 40%+, in each band) are achieved by creating dual-band radiators movable on the track around spherical lens and by placing of lower band radiators between spherical lenses. By using of secondary lens for high band radiators, coupling between low band and high band radiators is reduced. Beam tilt range and side lobe suppression are improved by special selection of phase shift and rotational angle of radiators. Resultantly, a wide beam tilt range (0-40 degree) is realized in proposed multi-beam antenna systems. Each beam can be individually tilted. Based on proposed single- and multi-lens antenna solutions, cell coverage improvements and stadium tribune coverage optimization are also achieved, together with interference reduction.

An object of the present disclosure is to realize low cost and low power consumption in an antenna system that tilts a radiation beam, and to realize a satellite communication antenna for which low power consumption is particularly desired.SOLUTION: The present disclosure is an antenna system including an antenna including one or a plurality of antenna elements, a plane wave conversion metasurface P including a conductor structure concentrically arranged on a dielectric substrate, the plane wave conversion metasurface P being arranged in front of the antenna and converting a radiation beam of the antenna into a plane wave, and a beam tilting metasurface B including a conductor structure periodically arranged on the dielectric substrate, the beam tilting metasurface B being arranged in front of the antenna, being arranged on a side opposite to the antenna when viewed from the plane wave conversion metasurface P, and tilting the radiation beam of the antenna.SELECTED DRAWING: Figure 4

Multi-band electronic beam tilt for distributed amplifier antenna array. A first set of phase adjustment circuits within a low-power first-band RF transmit distribution network applies a first-band electronic beam tilt to a first-band RF transmit signal. A second set of phase adjustment circuits within a low-power second-band RF transmit distribution network applies a second-band electronic beam tilt to a second-band RF transmit signal. A first set of phase-adjusted first-band RF transmit signals is received at a set of RF front end modules that are distributed along an antenna array column. A second set of phase-adjusted second-band RF transmit signals is received at the set of RF front end modules. A set of subarrays of at least one radiating element is distributed along the antenna array column. Each subarray is connected to and positioned substantially adjacent to a corresponding RF front end module of the set of RF front end modules.

The invention relates to the field of vehicle-mounted millimeter wave radars, in particular to a beam tilt suppression method and application of a series-fed microstrip patch antenna. Comprising the following steps: carrying out unit division based on amplitude and phase on a series-fed microstrip patch antenna with beam inclination to obtain a plurality of different types of array elements; performing equivalent processing on the divided array elements to obtain equivalent array elements; performing amplitude analysis and phase analysis on each array element after equivalence to obtain the amplitude and phase value of each array element; according to the amplitude and the phase value of each array element, the amplitude and phase relation of each array element is analyzed, and structural parameters of each array element are obtained through calculation; and based on the structure parameter of each array element, adjusting each array element structure of the series-fed microstrip patch antenna to realize beam tilt suppression. The antenna structure is divided into an amplitude unit and a phase unit, active suppression of beam tilt is achieved through equivalent processing, simulation analysis and parameter optimization, and the precision and stability of beam tilt suppression are improved.

The application discloses a microwave photon phased array radar detection method and system based on optical domain true delay, and realizes optical domain true delay on different wavelength laser signals through an optical delay module, controls the beam emission angle by combining the wavelength division multiplexing technology and the transmitting / receiving antenna array, modulates the target echo signal to another different wavelength laser signal as a carrier to obtain a receiving optical signal, and again passes through the optical delay module to make different wavelength components reach the coherent receiving module at the same time, realizes coherent fusion with the reference optical signal in the optical domain, and obtains target information through algorithm processing. The application realizes wideband scanning and real-time signal processing of the phased array radar based on the optical domain true delay technology, avoids the problem of beam tilting, has a compact system, low loss, strong anti-interference capability, and can effectively reduce the complexity and manufacturing cost.

The present disclosure is related to an antenna system, a radio frequency (RF) communication device including the same, and a method of operating the same. The antenna system includes an antenna array including one or more sub-arrays of antenna elements in which at least one sub-array being operable in more than one state; a state switching circuit electrically coupled to the at least one sub-array and configured to drive the at least one sub-array to operate in a first state in which an upper side lobe of the antenna array is suppressed for a first beam tilting range or in a second state in which an upper side lobe of the antenna array is suppressed for a second beam tilting range which is different from the first beam tilting range.

The utility model provides a split type fixed cross beam structure which is characterized in that the split type fixed cross beam structure comprises a first cross beam, and a second cross beam is installed on one side of the first cross beam; a user firstly uses the first gasket and the fixing bolt to install and fix the first fixing seat, under the cooperation of the installation hole, the locking bolt and the second gasket can be used for installing and fixing the first cross beam and the first fixing seat, and after the first cross beam and the first fixing seat are connected and fixed, the first cross beam and the first fixing seat are fixed. A user connects and fixes the second fixing seat and the first cross beam together, then connects and fixes the second cross beam and the second fixing seat together, and finally connects and fixes the third fixing seat and the second cross beam together, so that horizontal installation of the first cross beam and the second cross beam is completed. The situation that the cross beam inclines due to the overall size problem of the cross beam is avoided, the horizontal error of the cross beam in the installation process is reduced, and it is guaranteed that the two ends are kept horizontal in the X-axis or the Z-axis.