360 results about "Beam steering" patented technology

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.

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.

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.

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.

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

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 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.

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.

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.

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.

The invention discloses a harmonic generation and beam control method and system based on an amplitude-phase regulation metasurface array. The method comprises the following steps of: constructing an amplitude-phase regulation and control metasurface array by adopting a digital control multi-channel radio frequency chip; based on a Fourier series and far field superposition model, calculating a time-varying amplitude phase sequence of harmonic waves and a phase gradient of beam pointing; the sequence is converted into a control signal through an FPGA, and each channel is modulated in real time; after an array receives a dot frequency signal, a target harmonic wave beam with a preset characteristic is radiated to a specified direction through periodic amplitude-phase modulation and space phase gradient processing. The system comprises an amplitude-phase regulation metasurface array construction module, a harmonic wave and beam control model construction module, a digital control signal generation loading module and a target harmonic wave generation radiation module, and is used for realizing the harmonic wave generation and beam control method. Accurate generation of any order of harmonic waves and flexible deflection of wave beams are achieved, the system integration degree, the regulation and control precision and the real-time performance are improved, and the application field is wide.

A laser marking system and method for marking curved surfaces. The optical assembly is configured to project a laser beam onto the curved surface to apply the mark. The optical assembly includes beam steering optics configured to determine a variable position at which the projected laser beam intersects the curved surface. And a beam controller configured to control the beam steering optics based on a control algorithm. The control algorithm is configured to: receive an input image comprising a set of two-dimensional input coordinates representing nodes at which the indicia are expected to appear on the curved surface; receiving a curvature map representing a three-dimensional curvature of the curved surface; a set of two-dimensional output coordinates is calculated based on the set of two-dimensional input coordinates and the curvature map, and the laser beam position is controlled based on the set of two-dimensional output coordinates.

An optical switch comprising a set of input ports and a set of output ports, each input and output port configured to transport an optical signal having at least one component frequency channel. The switch comprises a first programmable deflection plane configured to deflect beams incident on it from the set of input ports to form a deflected array of beams, and a second programmable deflection plane configured to deflect beams incident on it towards the set of output ports. The switch also comprises a beam steering optical device positioned in the optical path between the first and second programmable deflection planes, configured to remap the deflected array of beams to form a remapped array of beams directed to the second programmable deflection plane, by changing the spatial positioning and / or orientation of each beam from the deflected array of beams in the remapped array of beams such that the spatial positioning and / or orientation of at least one beam of the deflected array of beams is changed differently to at least one other beam of the deflected array of beams.

The invention provides a beam hopping control method, electronic equipment, a storage medium and a program product, and the method comprises the steps that a satellite load receives a transparent forwarding signal sent by a base station and corresponding beam control information, the beam control information is sent earlier than the transparent forwarding signal, and the beam control information is used for the satellite load to carry out beam hopping control; the satellite load determines the effective moment of the beam control information according to the transparent forwarding signal and the local frame header moment of the satellite load, and the effective moment of the beam control information is synchronous with the transparent forwarding signal. Under the condition that the base station is not required to synchronously send the transparent forwarding signal and the corresponding beam control information, the satellite load can determine the effective moment of the beam control information according to the transparent forwarding signal sent by the base station and the local frame header moment of the satellite load, so that the effective moment of the beam control information is synchronized with the transparent forwarding signal; therefore, accurate and efficient control of the satellite load hopping beam can be realized.

Methods and systems for the generation of non-lethal and lethal effects using ultra-short pulse lasers. A laser source generates pulses at the direction of a controller and directs the pulses along an optical path to one or more high-speed beam steering devices, also directed by the controller, which then directs the laser pulses to achieve the desired effects. A computerized controller receives a specification of one or more desired effects for one or more targets and calculates a distribution of ultra-short laser pulses as well as the required characteristics for each of the pulses.

A particle beam illuminating system includes a beam steering control subsystem configured to receive charged particles and to generate and scan a particle beam over at least a portion of a target located a distance of at least 10 meters from the beam steering control subsystem. The system further includes a beam charge control subsystem configured to receive the particle beam from the beam steering control subsystem and to control an output charge of the particle beam impinging the target.

The invention relates to the technical field of satellite communication, in particular to a high-gain phased array receiving antenna system for low-orbit satellite communication, which comprises a radiation feed integration module, a beam phase mapping module, a digital beam forming module, a signal amplification module, a protection packaging module and a performance verification module. Stacking strip line feed networks and performing electromagnetic coupling to obtain an initial radiation channel; receiving and analyzing a beam control instruction through an embedded circuit, extracting a target beam pointing angle and mapping the target beam pointing angle into a phase offset; generating a digital phase control word according to the phase offset, and applying the digital phase control word to the radio frequency signal to complete phase calibration; a transistor with a low-noise amplification structure is used for enhancing the calibrated signal energy; the wave-transparent front cover covers the radiator, and the electromagnetic shielding rear cover wraps the internal components to form an assembly in a sealing manner; and verifying the gain and beam switching rate of the assembly in the typical frequency band of the low-orbit satellite. According to the invention, the low-orbit satellite communication signal receiving efficiency can be improved.

The invention relates to a wave beam control method for a Ka-band phased-array antenna and a related device, and the method comprises the steps: obtaining a target pointing instruction of at least one wave beam, and carrying out the parallel calculation of target weights needed by a plurality of receiving and transmitting assemblies in the phased-array antenna for the at least one wave beam based on the target pointing instruction; packaging the target weight into a control instruction and issuing the control instruction to a plurality of corresponding transceiving components; loading the target weights to respective storage units by the plurality of receiving and transmitting components; broadcasting a global synchronous trigger signal to the plurality of receiving and transmitting components after the plurality of receiving and transmitting components finish loading the target weights to the storage unit; and synchronously updating the working states of the plurality of receiving and transmitting components by using the target weight in the storage unit at the same moment when the plurality of receiving and transmitting components receive the global synchronous trigger signal. According to the invention, all the antenna units can be ensured to accurately and synchronously complete state updating at the same time, so that the instantaneity of a beam switching process and the stability of signals are ensured.

The invention discloses a multi-mode integrated digital beam control circuit which comprises a common control module integrated on an ASIC chip and multiple stages of channels connected in series, each stage of channel is internally provided with a three-stage cache structure and a switch control module, and each stage of channel multiplexes an input interface and is provided with a corresponding output interface; the three-stage cache structure performs switching output of wave control data in different working modes on input data provided by the input interface according to a digital control signal provided by the input interface and an address read-write signal output by the common control module; the switch control module selects to output a phase shift code or an attenuation code or transmit and receive a switch code value according to the wave control data output by the three-stage cache structure so as to control a post-stage circuit; compared with a traditional FPGA structure or a discrete device, the power consumption and the area are optimized, and meanwhile a high-integration multifunctional integrated framework is achieved.

A uniform circular array (UCA) is assisted with an analog inverse fast Fourier Fast transform (IFFT) / fast Fourier transform (FFT) precoder to reduce computational complexity in one or more line-of-sight (LoS) multiple-input multiple-output (MIMO) networks. Each port of the UCA includes a steerable miniaturized array with beam steering capability. Analog beam steering is performed via one of the analog IFFT / FFT precoder or one of the steerable miniaturized arrays in a port of the UCA, for improving one or more properties of steering one or more beams toward one or more intended destinations in the one or more LoS MIMO networks.

The present invention relates to the technical field of industrial safety and non-destructive testing, and specifically discloses a non-destructive testing optimization method based on accuracy feedback of explosion-proof equipment safety status assessment. By real-time monitoring of the beam steering angle and local temperature gradient of the explosion-proof equipment, key data is obtained using a high-precision sensor network, and advanced data analysis technologies such as clustering algorithms and fast Fourier transforms are applied to calculate abnormal eigenvalues of the beam steering angle and local temperature gradient eigenvalues to evaluate the stability of ultrasonic propagation and the consistency of the internal structure of the equipment. These eigenvalues are combined to construct a eigenvector, which is input into a support vector machine model and outputs a safety status score of the equipment. This score is used to determine whether the current detection process is in an unstable state. Once the system is determined to be unstable, the beam steering angle will be automatically adjusted to cover the abnormal area, and the scanning density of the abnormal area displayed by the local temperature gradient will be increased to ensure more detailed detection of potential problems.

The invention discloses a beam control method, a transmission method, a device, a transmitting end and a receiving end, and belongs to the technical field of communication, the beam control method of the embodiment of the invention comprises the following steps: the transmitting end transmits reference signals through M first antenna blocks, the reference signals transmitted by different antenna blocks in the M first antenna blocks are mutually orthogonal, the antenna block comprises at least one antenna unit, the reference signal is used for calculating the position of a beam focus point, and M is an integer greater than or equal to 3; the sending end obtains the position of the beam focus point; and the transmitting end performs beam focusing according to the position of the beam focusing point.

Apparatus, systems, and methods for a wireless device and a cellular base station to support common analog beam steering for frequency band groups. The wireless device may provide the cellular base station with an indication of the wireless device's analog beam steering capabilities. For example, the wireless device may support a limited number of analog beams for each of one or more frequency band groups. The cellular base station may select beam configuration information for the wireless device based at least in part on the indication of the wireless device's analog beam steering capabilities. This may include selecting a common beam for multiple component carriers of the wireless device based on the wireless device's analog beam steering capabilities. The cellular base station may provide the beam configuration information to the wireless device.

The invention discloses a phased array antenna system and a preparation method thereof, which can be applied to the technical field of communication, and the system comprises a quasi-electrostatic modulation layer, a first structure network layer, an adaptive feed system, a radio frequency front end module and a system support module. Wherein the input end of the self-adaptive feed system is connected with the output end of the system support module; the output end of the self-adaptive feed system is connected with the quasi-electrostatic modulation layer and the radio frequency front-end module respectively; the quasi-electrostatic modulation layer is connected with the first structure network layer and is used for correspondingly adjusting the surface impedance of the phased array antenna system according to the voltage control signal; the first structure network is used for modulating the radiation performance and isolation of the phased array antenna; and the radio frequency front-end module is used for sending a corresponding radio frequency signal to the antenna unit according to the beam control signal. Therefore, the charge distribution on the surface of the antenna is dynamically adjusted based on the quasi-electrostatic modulation layer, beamforming is realized, and the adaptability of the phased array antenna system is improved.

A near-eye display (10) includes a lightguide optical element (LOE) (12) with opposed major surfaces (12a, 12b), an image projector (14), a first region (16) having partially reflective surfaces (26, 27), and a second region (18) with an out-coupling arrangement (28). To suppress ghosts from single reflections at a facet or interface (25), an elongated light-deflecting structure (261, 271, 251) is provided on the first major surface (12a) adjacent thereto. The structure is configured so that a reverse-traced unguided ray from an eye-motion box (102) that would otherwise impinge the facet / interface is deflected so it does not impinge. A corrective light-deflecting structure (262, 272, 252) on the second major surface (12b) may counter-deflect rays to reduce impact on the peripheral vision. The light-deflecting structures provide beam steering without optical power and may be implemented as prisms or as diffractive / metasurface or volume-holographic elements, formed as discrete strips or portions of a continuous film.

The invention provides a conformal phased-array antenna, a system and a beam control method, and the antenna comprises a conformal carrier which is disposed on a vehicle body structure, and the structure of the conformal carrier is matched with the vehicle body structure; the antenna array comprises a plurality of antenna units distributed in an array and is arranged on the first surface of the conformal carrier; the chip array comprises a plurality of radio frequency chips which are distributed in an array mode, the radio frequency chips are arranged on the second face of the conformal carrier and connected with the antenna unit, the antenna unit and the chip array are arranged on the conformal carrier matched with a vehicle body structure, the coverage range of radar antenna beams can be enlarged, and therefore the coverage range of the radar antenna beams can be enlarged. The multi-target tracking performance of the radar in a complex traffic environment is significantly improved, and the safety of intelligent driving is improved.