615 results about "Beam steering" patented technology

A device capable of using data from multiple sensors to determine an estimated position / direction of a user with respect to the device. The device may use estimated position data, along with confidence data, that originated from a plurality of sensors to fuse the data to determine the user's estimated position and comprehensive confidence of the estimated position. The system may use the location information to perform beamforming / beam steering and / or other downstream operations using the comprehensive estimated position.

Provided are a reconfigurable intelligent surface, a communication method using the reconfigurable intelligent surface, and a transceiver device including the reconfigurable intelligent surface. The reconfigurable intelligent surface may include a plurality of unit cells arranged in a mesh form, a beam steering module electrically connected to the plurality of unit cells, and at least one sensing module electrically connected to the plurality of unit cells, wherein the plurality of unit cells may include a plurality of reflection unit cells configured to reflect at least one signal incident thereon in a direction set by the beam steering module, and a plurality of sensing unit cells configured to obtain phase information of the at least one signal and transmit the phase information to the at least one sensing module.

The invention discloses a large-scale phased array multi-channel partition beam control method and device based on an FPGA and a storage medium. The method comprises the steps that a control instruction of an antenna control unit is acquired; analyzing the control instruction which is verified to be correct, judging an instruction type according to an analysis result, when the instruction type is a beam switching instruction, determining a beam control parameter in the instruction, and calculating a base code of the phased-array antenna according to the beam control parameter; the array elements of the phased-array antenna are divided into a plurality of areas, according to the base codes and the position coordinates of the array elements, the wave control codes of the array elements are calculated in parallel by adopting a multi-channel partitioning method, and the wave control codes are normalized and then written into a beam forming chip in parallel; and after the operation is completed, a corresponding response instruction is sent to the antenna control unit. The method has the advantages of being high in beam switching speed, small in resource consumption and good in universality, an array can form a sparse array in the mode of sending a control instruction, and therefore side lobes are restrained, and power consumption is reduced.

An aircraft comprising an aircraft transceiver to transfer data to and from the aircraft by free-space-optical communication when parked. The aircraft transceiver comprises a transmitter to generate outgoing light carrying aircraft-to-ground data; a lens to collimate the outgoing light to generate a collimated beam; a beam steering device to transform the collimated beam to generate a steered beam; a control system to operate the beam steering device to adjust an angle of the steered beam; and a receiver to sense incoming light carrying ground-to-aircraft data. The receiver receives the incoming light via the beam steering device and the lens. Also a vehicle with a similar transceiver to transfer data to and from a parked aircraft by free-space-optical communication.

This disclosure relates generally to a composite reconfigurable intelligent surface system for real time beam steering and method thereof. Conventional method for real time beam steering includes bulky systems with several antenna elements and amplifiers to shape and control the beam. The present disclosure provides a composite reconfigurable intelligent surface (CRIS) for real time beam steering. The CRIS is formed from a set of constituent reflecting surfaces which in turn are generated from unit cells. These unit cells are responsible for providing individual phase reflection performance utilizing the installed varactor diode in each unit cell. The CRIS can provide a) multi-beam reflection performance, b) polarization sensitive operation, c) 2D beam steering abilities, d) real-time beam control, e) null point reduction for beam shaping requirements and f) dependable pattern stability over a suitable range of frequencies.

The present invention relates to a compound of formula (A) in which the occurring groups and parameters have the meanings defined in claim 1, to a liquid crystal medium comprising a compound of formula (A) and to high-frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas, e.g. phased array antennas.

The technology described herein is directed towards a transceiver with beam scanning capability based on leaky wave antenna technology and substrate integrated waveguide technology, along with a metallic covering that determines which direction the antenna radiates signals. The leaky wave antenna can include different respective groups of slot pairs having different respective periodicities, corresponding to different respective beam steering directions. One or more metallic covers can be used to cover some of the slot pair sections, such that the sections under cover behave like a conventional substrate integrated waveguide and the exposed section(s) behave like conventional leaky wave antennas. The metallic covers can be moved as desired, such as attached via magnets. The transceiver can thus steer signals to a wearable or portable device that includes a passive metasurface while mitigating null regions. The slot pairs can be asymmetrical reflection-canceling slot pairs, to achieve broadside radiation while avoiding band-stop effects.

Reversible phase-change materials (PCMs) can be added to or incorporated into meta-lenses, wave plates, waveguides, gratings, and other optical components to form active optical devices with controllable and adjustable optical characteristics. Local heating can be used to induce solid-state phase changes and large refractive index changes in the PCMs. The phase and index changes can provide large changes in the device's optical characteristics. Optical devices with PCM can be used for imaging applications, orbital angular momentum control, photonic integrated circuits and optical communication systems, beam steering, and other application.

The technology described herein is directed towards a reconfigurable surface device that reflects an impinging electromagnetic signal, with a phase profile determined by vertical positioning of a flexible metallic ground plane beneath metallic resonating elements of the reconfigurable surface. The vertical positioning forms different gaps between portions of the flexible ground plane and the respective metallic resonating elements above those portions, to determine the direction of the reflected beam. In one implementation, four individually linear actuators (vertical driving motors) are mechanically coupled to the corners of the ground plane of a metasurface (panel). These actuators and motors are independently controlled to establish the phase profile, by determining the amount of vertical positioning of each corner of the flexible ground plane to steer the reflected beam. The low-cost design can operate to steer millimeter wavelength beams in many wireless communication scenarios.

This disclosure relates generally to a composite reconfigurable intelligent surface system for real time beam steering and method thereof. Conventional method for real time beam steering includes bulky systems with several antenna elements and amplifiers to shape and control the beam. The present disclosure provides a composite reconfigurable intelligent surface (CRIS) for real time beam steering. The CRIS is formed from a set of constituent reflecting surfaces which in turn are generated from unit cells. These unit cells are responsible for providing individual phase reflection performance utilizing the installed varactor diode in each unit cell. The CRIS can provide a) multi-beam reflection performance, b) polarization sensitive operation, c) 2D beam steering abilities, d) real-time beam control, e) null point reduction for beam shaping requirements and f) dependable pattern stability over a suitable range of frequencies.

The invention provides a multi-sub-array FD-RIS distance-angle beam regulation and control far field communication method and system, an FD-RIS is uniformly divided into a plurality of sub-arrays, and each sub-array adopts different modulation frequencies to realize diversity of frequency deviation. Besides, in order to control unexpected harmonic signals, a novel time modulation method is utilized to periodically adjust phase shifts of all reflection units of the FD-RIS, and unwanted harmonic signals can be effectively restrained. Different time delays are added in the time modulation process of each component so as to amplify the spatial degree of freedom of the FD-RIS to an expected harmonic signal, and the space control capability of the FD-RIS to the expected harmonic signal is prevented from being limited by a time modulation mode.

The invention discloses a phased array distributed hierarchical control wave control system and a wave beam control method, and relates to the technical field of signal processing, the wave control system comprises a main control FPGA module, a plurality of sub-control FPGA modules and a plurality of T / R wave beam forming modules; the master control FPGA module is used for receiving a user instruction and outputting a phase shift control instruction according to the user instruction; the plurality of sub-control FPGA modules are in interactive connection with the main control FPGA module, and the sub-control FPGA modules are used for receiving the phase shift control instruction and outputting a phase shift code according to the phase shift control instruction; the plurality of T / R beamforming modules are respectively connected with the sub-control FPGA module and the antenna unit, and the T / R beamforming modules are used for receiving the phase shift codes and performing phase adjustment on the antenna unit according to the phase shift codes, so that not only can beam switching be quickly realized, but also the layout and wiring of a wave control board can be simplified, and the cost is reduced. And meanwhile, the requirements on the resources and the performance of the single FPAG and the cost of a wave control system are effectively reduced.

The invention discloses a variable capacitance diode-based element grating leaky-wave antenna adjustable beam control method. The method comprises the following steps of S1, researching and analyzing a super grating beam conversion mechanism; a plane super grating mechanism under anisotropic, uniform and continuous periodic boundary conditions is researched; s2, carrying out the transmission mode and optimization design of the Floquet-Blocch theorem according to the super grating; the FB mode is researched, and a tool used for super grating parameters is designed to eliminate the bad FB mode; s3, analyzing and designing the super grating leaky-wave antenna; the analytic field and current of the synthetic super grating are researched in the leaky-wave antenna frame to customize the performance in the aspects of phase, beam shape and polarization; s4, designing and analyzing the electric tuning wave beam control super grating leaky-wave antenna; according to the variable capacitance diode-based element grating leaky-wave antenna adjustable wave beam control method, a high-efficiency structure platform which is tuned by a tunable material with a simple structure is adopted, and a road is laid for a new generation of high-efficiency special grating.

The invention discloses airborne radar interference equipment of a phased array system in the technical field of radar countermeasure. The airborne radar interference equipment comprises an antenna array; a plurality of transmit-receive assemblies comprising a plurality of transmit-receive channels, wherein each transmit-receive channel comprises a numerical control attenuator and a numerical control phase shifter; the beam control unit controls the numerical control phase shifter and the numerical control attenuator; the power divider / combiner is used for combining or dividing the signals; the circulator is used for realizing one-way transmission of signals; the low-noise amplifier is used for performing low-noise amplification on the signal; the microwave frequency conversion unit is used for performing down-conversion and up-conversion processing on the signal; the digital processing unit is used for processing the intermediate frequency signal to form an interference signal; and the main control unit communicates with the digital processing unit to control an interference pattern, and communicates with the beam control unit to control beam pointing, frequency, attenuation and an enable signal of a transmit-receive assembly. The airborne radar interference equipment can realize interference signals with high power and beam scanning, and has the advantages of high equivalent radiation power and rapid interference scanning.

An optical switch comprising: a set of first input ports. each first input port configured to transport an optical signal having at least one component frequency channel: a set of first output ports. each first output port configured to transport an optical signal having at least one component frequency channel: a first programmable deflection plane configured to deflect beams incident on it to form a first deflected array of beams: a second programmable deflection plane configured to deflect beams incident on it to form a second deflected array of beams: a first demultiplexer configured to separate light from the set of first input ports into its component frequency channels to form the beams incident on the first programmable deflection plane: a first multiplexer configured to combine the second deflected array of beams from the second programmable deflection plane into combined signals incident on the set of first output ports: and a beam steering optical element group configured to transfer the first deflected array of beams from the first programmable deflection plane to the beams incident on the second programmable deflection plane. The incidence normal of the first programmable

In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.

The present invention relates to an indene derivative of formula D as specified in claim 1, to a liquid crystal medium comprising a compound of formula D and to high- frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas, e.g. phased array antennas.

A dual-modulation laser projection system (100) includes a polarizing beamsplitter (110) for splitting laser light (180) into first (182) and second (184) polarized beams having mutually orthogonal polarizations, a phase spatial light modulator (120) for beam steering the second polarized beam (184), a mechanical amplitude spatial light modulator (130) for amplitude modulating a combination of the first polarized beam (182) and the second polarized beam (186) as beam steered by the phase spatial light modulator (120), and a filter (140) for removing, from the combination (190) of the first and second polarized beams, one or more of a plurality of diffraction orders introduced by the mechanical amplitude spatial light modulator (130), to generate filtered, modulated output light (192).

A FMCW LIDAR system for simultaneous beam scanning of the target environment. The system can include a photonics assembly couplable to a beam steering module. The photonics assembly is configured to receive a frequency modulated laser beam and can include an optical splitter and a coherent receiver. The optical splitter can be configured to optically split the frequency modulated laser beam into a local laser beam and a target laser beam, deliver the target laser beam to the beam steering module, and receive the target laser beam reflected by a target from the beam steering module. The coherent receiver can be configured to mix the local laser beam and the target laser beam to produce an output signal.

The technology described herein is directed towards a multiband unit cell that is part of a reflective surface that can reflect different specific frequencies of impinging electromagnetic waves. The unit cells can have different phase profiles to facilitate beam steering and / or beam splitting functionality, independently for each specific frequency. The multiband unit cell can be a dual-band unit cell based on a straightforward unit-cell design, e.g., using diagonally arranged ring resonators as sub-cells of a supercell. Alternative design variations are also described to accommodate multi-frequency (greater than two frequency) applications. In one example implementation, the metasurface is constructed as a low-profile dual-band reflective surface with beam-steering and / or beam-splitting capabilities, e.g., utilizing only a single unit cell metal layer above a substrate. This enables precise control and manipulation of an antenna's radiation pattern, providing enhanced coverage for both frequency bands while keeping the fabrication / manufacturing costs relatively low.

A method comprising receiving a positioning reference signal request, determining positioning requirements associated with the received positioning reference signal request, determining capabilities of a terminal device, determining an antenna array radiation pattern beam width for a position reference signal based, at least partly on the determined positioning requirements and the determined capabilities of the terminal device, obtaining a value for a compensation parameter based on the determined antenna array radiation pattern beam width, performing beam steering towards a target access node, and performing a timing compensation using the compensation parameter with the obtained value.

A system within a vehicle for communicating with a person in the vicinity of the vehicle comprises a perception system connected to a control unit of the system and adapted to detect the presence of a person, a monitoring system adapted to monitor the position of the person's head and eyes, a holographic image generator comprising a visual computing engine adapted to compute a holographic image and encode the holographic image onto a spatial light modulator of an image generation unit, and a beam steering device, wherein the beam steering device is adapted to receive information regarding a position of the person's head and eyes from the monitoring system, and the display is adapted to project the holographic image onto the beam steering device, and the beam steering device is adaptedto redirect the projected holographic image to the person's eyes.

The invention discloses a terrain discrimination system and method based on a multi-beam radar, and mainly solves the problem that existing equipment cannot obtain terrain information below a carrier aircraft when the carrier aircraft encounters severe weather. The system comprises a phased-array antenna system, a transceiver, a signal data processing assembly and a power supply assembly. The transceiver generates a clock reference and transmits the clock reference to the signal data processing component; the signal data processing component generates a baseband signal and beam control data, transmits the baseband signal and the beam control data to the transceiver, and transmits the beam control data to the phased-array antenna system for data analysis; the transceiver processes the baseband signal to generate an excitation signal and radiates the excitation signal to the outside through the phased-array antenna system; the phased-array antenna system receives and processes the echo signals, then transmits the echo signals to the transceiver, down-converts the echo signals to an intermediate frequency band, and then sends the echo signals to the signal data processing assembly for sampling, digital signal processing and height and slope direction calculation to obtain a terrain recognition result. The method can stably and accurately obtain the topographic condition under the severe weather condition, and can be used for measuring the task executed by the aerial carrier.

The invention relates to the technical field of silicon-based optical phased arrays, in particular to an optical phased array, a preparation method and a light beam regulation and control method, and the optical phased array comprises an SOI wafer; the waveguide structure is formed on the SOI wafer; the emission grating array is arranged at the tail end of the waveguide structure; the programmable metasurface structure covers the emission grating array, the programmable metasurface structure comprises a plurality of micro-structure units, each micro-structure unit comprises an asymmetrical structure geometric regulation and control structure and a control electrode electrically connected with the asymmetrical structure geometric regulation and control structure, and the control electrode is used for receiving an electric signal to regulate and control the effective refractive index of the micro-structure unit; the programmable metasurface structure can form spatial refractive index gradient distribution in a two-dimensional direction so as to generate two-dimensional phase distribution, and is used for modulating longitudinal and transverse emergent angles of emergent light of the self-emission grating; wherein the waveguide structure, the emission grating array and the programmable metasurface structure are integrated to form an integrated structure.

A beam steering system includes a differentially segmented aperture antenna comprising a plurality of pyramid structures arranged in an array, and a plurality of elements formed in an array, each element being defined between two adjacent pyramid structures; phase conversion circuitry to determine a phase conversion for each element, the phase conversion for each element being based on an angle of a target with respect to the element, and an operating frequency of the DSA antenna; transmit phase shift circuitry to apply a phase difference for each element based on the phase conversion, the phase difference steering the signal to the target so that the signal interferes constructively; and receive phase shift circuitry to apply a phase difference for each element based on the phase conversion, causing the signal to interfere constructively for a signal of interest, and suppresses an unwanted signal by steering the signal into a null.

The invention relates to the technical field of antennas, and provides an antenna, a communication method and terminal equipment, and the method comprises the steps: attaching a metal floor to a first surface of a dielectric substrate; the first excitation element and the second excitation element are respectively arranged on the first side and the second side of the metal floor, and the sizes of the two elements are related to a target frequency band; an inner conductor and an outer conductor of the first feed assembly are correspondingly connected with a first feed point of the first excitation element and the metal floor respectively; an inner conductor and an outer conductor of the second feed assembly are correspondingly connected with a second feed point of the second excitation element and the metal floor respectively; the first feed assembly is used for providing first excitation current for the first excitation element; the second feed assembly is used for providing a second excitation current for the second excitation element; the first excitation current and the second excitation current with different phase differences can present different current distributions on the metal floor, so that the purpose of antenna radiation beam steering is achieved, the technical effect of wide beams is achieved, and thus space direction coverage on a target frequency band is achieved.

A dual lens inspection device, having a low power lens group satisfies the condition value of 3.0≥magnification≥1.0; a high power lens group, satisfies the condition value of 25.0≥magnification≥15.0; a light source module projecting an illumination light source to the low power lens group and the high power lens group; a beam splitter arranged on the optical path of the illumination light source, so as to generate a first optical path passing through the low power lens group and a second optical path passing through the high power lens group, and projected on an object located on the same plane; a first luminous flux module and a second luminous flux module control the luminous flux of the first and second optical path, and then achieve the effect of dark field illumination; a camera using the beam splitter to achieve a beam steering effect, and then captures the image of the object.

Provided in an embodiment of the present invention are a beam control information transmission method, a beam control method and a related device, the beam control information transmission method comprising: sending a first message to a radio frequency unit, the first message carrying beam control information of a target beam, so that the radio frequency unit performs beam control on the target beam based on the beam control information; wherein the target beam is one or more beams concurrently sent through the radio frequency unit, and the beam control information comprises configuration parameters of the target beam and effective time of the configuration parameters. According to the invention, beam control information transmission is carried out, and beam control can be realized in a multi-beam concurrent scene.

Examples disclosed herein relate to a radar system in an autonomous vehicle for object detection and classification. The radar system has a radar module having a dynamically controllable beam steering antenna and a perception module. The perception module includes a machine learning module trained on a first set of data and retrained on a second set of data to generate a set of object locations and classifications, and a classifier to use velocity information combined with the set of object locations and classifications to output a set of classified data.

A method is provided for operating a monopulse active electronically scanned array (AESA) radar system on an aircraft. This system includes multiple emitter elements each with corresponding radio frequency (RF) channels including beamforming integrated circuits (BFICs). The method includes defining multiple modes, with each mode defining an effective aperture by specifying a different plurality of the emitter elements, and determining a preferred state of the AESA system based on a flight phase or environment of the aircraft. One of the plurality of modes is identified as corresponding to the preferred state, and beam steering is calibrated via a beam steering controller (BCM) to produce sum, azimuth difference, and elevation difference beams under the constraint of illuminating all of and only the plurality of the emitter elements corresponding to the selected one of the plurality of modes. BFICs of the emitter elements are then energized according to this calibrated beam steering.