17 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.

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.

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 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.

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.

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 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

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.