228 results about "Beam steering" patented technology

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.

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.

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.

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.

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.

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 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.

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.

A method includes acquiring and characterizing multiple laser beams. The method includes tracking the acquired laser beams. The method includes controlling a beam of the acquired laser beams. The method includes implementing an adaptive learning detection algorithm to identify and track a unique optical signature from at least one of the acquired laser beams. The method includes steering at least one laser beam towards a target based on the acquired laser beams. The method includes changing one or more optical properties of a beam steering unit to steer the at least one laser beam towards the target, including one or more of the following: inducing a Pockels effect on the at least one beam by applying an electric field; tuning Spatial Light Modulators; tuning a metamaterial structure; inducing a diffraction grating; and modifying an output angle of the at least one beam.

The purpose of the present invention is to provide a radio wave lens and an antenna with which it is possible to achieve both gain improvement and emission angle expansion. A radio wave lens (50) according to the present invention is provided with a structure in which a focusing lens (10) for focusing incident radio waves and a diverging lens (20) for diverging incident radio waves are stacked. An antenna (101) according to the present invention is provided with a structure in which a radiator (30) for beam-steering radio waves, the focusing lens (10) for focusing incident radio waves, and the diverging lens (20) for diverging incident radio waves are stacked.

To provide a dish antenna that hardly receives influence of vibration.SOLUTION: An antenna 100 comprises a main reflector 101, a waveguide that protrudes towards an external region of the main reflector 101, a mechanism 165 which enables displacement of part of the waveguide, an actuator 170 operative to displace the part of the waveguide, a sensor 175, and a control unit 180. The antenna 100 further comprises at least one sensor 175. The sensor 175 includes a gyroscope which measures angular velocity of the main reflector 101 and an accelerometer which measures the gravitation direction, and further includes an inertial measurement device and / or a position sensor. The control unit 180 controls the actuator 170 using data from the sensor 175.SELECTED DRAWING: Figure 3

The application discloses a low-profile wave beam regulation millimeter wave antenna loaded with Huygens super surface, which comprises a non-biased substrate integrated waveguide slot array antenna and a near-field Huygens super surface; the non-biased substrate integrated waveguide slot array antenna is composed of a first dielectric substrate, metal structures printed on the top and bottom of the first dielectric substrate, a slot array etched on the metal structures and metal through holes in the first dielectric substrate; the near-field Huygens super surface comprises a second dielectric substrate and metal structures on the top and bottom of the second dielectric substrate; the non-biased substrate integrated waveguide slot array antenna serves as an excitation source to provide a spherical wave, and the near-field Huygens super surface is used for precisely regulating the phase distribution above the slot array antenna. The application has the characteristics of low profile and can realize two-dimensional wave beam regulation based on different super surface distributions.

A beam control device capable of performing an automatic beam selecting mechanism, is used to control a first number of platform-provided beams generated by an antenna array. The platform-provided beams are used to provide communication service to several terminal devices. The beam control device includes a beam classifying unit and a beam type converting unit. The beam classifying unit is used to select a second number of patrol beams from the platform-provided beams, confirm a service status of each patrol beam, and classify the patrol beams into serving beams and non-serving patrol beams according to the service status. The beam type converting unit is used to select at least one of a third number of candidate beams, and convert the selected candidate beam into the type of the patrol beams to replace at least one of the non-serving patrol beams.

The invention provides a rocket phased-array antenna beam control method and device, and relates to the technical field of spaceflight measurement and control, and the method comprises the steps: obtaining the flight pose data of a rocket at the current moment and the working state data of a phased-array antenna at the current moment; determining a beam pointing target value of the phased-array antenna at the current moment based on the flight pose data at the current moment and the spatial position data of the relay satellite; determining a radiation power target value of the phased-array antenna at the current moment based on the flight pose data at the current moment; and generating a beam control instruction of the phased-array antenna based on the beam pointing target value and the radiation power target value at the current moment and the working state data at the current moment, and driving the phased-array antenna to complete beam pointing. According to the method and the device provided by the invention, the rapid, accurate and reliable control of the antenna beam in a complex dynamic environment is realized; the method improves the completion quality and efficiency of a spaceflight measurement and control task, and guarantees the measurement and control demands of the key stage of the spaceflight task.

Systems and methods for displaying images. One example method includes receiving image data indicative of at least one image to be displayed, dividing, for each subframe of a plurality of subframes, a beam-steering modulator into a plurality of modulator regions, and dividing, for each subframe of the plurality of subframes, the at least one image into a plurality of image regions. The method includes identifying a subset of image regions that contain at least one location having a brightness greater than a predetermined brightness, generating, for each subframe of the plurality of subframes, a set of regional drive values, and generating, for each subframe of the plurality of subframes, beam-steering drive values by combining the set of regional drive values based on the identified subset of image regions. The beam-steering drive values for a first subframe are angularly different than the beam-steering drive values for a second subframe.

Embodiments of the invention may present a full-duplex nonreciprocal-beam-steering transmissive phase-gradient meta-surface. The metasurface may comprise a conductor layer interposed between two dielectric layers. Each of the dielectric layers may comprise a plurality of unit-cells embedded therein. Each of the unit-cell may comprise phase shifters and antenna elements. The meta-surface may function such that when an electromagnetic wave is received at the surface of the metasurface, the metasurface may transmit a wave having a similar or identical frequency to the frequency of the received wave but to a different direction in space.

An eyewear device includes a lightguide having a world-side surface and an eye-side surface, a display oriented to emit light toward the lightguide, and a beam steering element that includes a first polarization grating positioned along an optical path between the display. The first polarization grating diffracts light emitted by the display into orders having different polarizations and the orders are selectively conveyed into different eyeboxes. The eyewear device also includes a frame that supports the lightguide, the display, and the first polarization grating. In some cases, the different polarizations include a right circular polarization or a left circular polarization and the beam steering element includes a polarization dependent filter that filters right circularly polarized light in a first state and left circularly polarized light in a second state.

The invention provides a terahertz generation and radiation device based on a double-ellipse conical groove antenna, which mainly comprises a terahertz generation part and a terahertz radiation part, and different device units in the terahertz generation part are used for generating terahertz based on two received light waves with different phase differences. Converting two beams of light waves with a specific phase difference into terahertz waves by using a light wave difference frequency effect, wherein the terahertz waves inherit the phase difference of the light waves; and the terahertz radiation part is used for radiating the terahertz waves to a free space so as to realize beam steering of the terahertz waves in a far field. Furthermore, the invention also discloses a terahertz phased array system. According to the invention, wide-angle and grating lobe-free scanning of terahertz wave beams can be realized, and a large-scale array can be realized.

The present disclosure describes a system and method for LiDAR scanning. The system includes a light source configured to generate one or more light beams; and a beam steering apparatus optically coupled to the light source. The beam steering apparatus includes a first rotatable mirror and a second rotatable mirror. The first rotatable mirror and the second rotatable mirror, when moving with respect to each other, are configured to: steer the one or more light beams both vertically and horizontally to illuminate an object within a field-of-view; redirect one or more returning light pulses generated based on the illumination of the object; and a receiving optical system configured to receive the redirected returning light pulses.

The invention discloses an antenna system of an unmanned aerial vehicle interference gun, which relates to the technical field of antennas, and comprises a multi-frequency-band radiation unit covering common frequency bands of an unmanned aerial vehicle, a beam control module for realizing beam orientation and scanning, a polarization adjustment module for switching polarization modes, and a feed matching module for guaranteeing low-loss transmission of signals. The installation adaptation module provides fixation and angle adjustment, the radiation enhancement module enhances signal focusing, the grounding protection module guarantees safety and electromagnetic compatibility, the multi-unit cooperation module coordinates multi-frequency-band work, the broadband adaptation module expands the bandwidth, and the state monitoring module feeds back the working state of each module. According to the invention, the frequency band coverage range is expanded, and the beam pointing precision and polarization adaptation efficiency are improved; the system is reliable in protection, adapts to different application scenes and unmanned aerial vehicle types, has fault redundancy capability, and gives consideration to practicability and compatibility.

Methods and apparatus for generating a codebook for a reconfigurable intelligent surface (RIS) having a plurality of reflective elements (RIS elements). In an example, a method includes determining relative location information regarding a transmitter and the RIS and a receiver and the RIS. Based on the relative location information, angle of arrival information is calculated for signals from the transmitter to the RIS elements, and angle of departure information is calculated for signals from the RIS elements to the receiver. Phase shift information for the RIS elements is calculated based on the angle of arrival and angle of departure information, and is used to select reflection coefficients for the RIS elements such that a transmitted signal is reflected from the RIS to the receiver as a coherent reflected beam. The reflection coefficients are stored as a codeword in a RIS codebook used to configure the RIS elements.

Systems, methods, and computer-readable media are described herein which utilizes and controls an electromagnetic energy beam steering apparatus. The electromagnetic energy beam steering apparatus uses directional properties of a Luneburg lens to receive RF energy from one or more points of the Luneburg lens and re-transmits the RF energy from a different point of the Luneburg lens to focus the RF energy in a desired direction. The electromagnetic energy beam steering apparatus may take a form of a passive repeater, an active repeater, or a multipath active repeater.

Examples disclosed herein relate to a Multiple-Input Multiple-Output (MIMO) radar for virtual beam steering. The MIMO radar has a plurality of transmit antennas and a receive antenna array having a plurality of radiating elements. The MIMO radar also includes a digital signal processor (DSP) configured to synthesize a virtual receive array having N×M receive subarrays from the plurality of transmit antennas and the receive antenna array, where N is the number of transmit antennas and M is the number of receiving elements. Other examples disclosed herein relate to a method of virtual beam steering.

The technology described herein is directed towards a transceiver with beam scanning capability based on leaky wave antenna technology, which facilitates a compact transceiver design. The leaky wave antenna can be incorporated into a substrate integrated waveguide design, and can include different respective groups of slot pairs having different respective periodicities, corresponding to different respective beam steering directions. The transceiver can thus steer signals to a wearable or portable device that includes a passive metasurface while mitigating null regions; the transceiver transmits a wireless radio frequency signal towards the metasurface integrated into the wearable device, whereby the metasurface reflects an (e.g., metasurface-altered) instance of the incoming signal back to the transceiver. The receipt of the reflected signal can, for example, facilitate proximity detection of the user. The slot pairs can be asymmetrical reflection-canceling slot pairs, to achieve broadside radiation while avoiding band-stop effects.

The application discloses a light paper-based planar lens for electromagnetic wave beam steering and a planar antenna thereof, and belongs to the technical field of antennas. The paper-based main body is formed by surrounding a periodic interval arranged cavity structure with a sheet-shaped paper-based body, and has two opposite planes, i.e. an incident plane and an emission plane of electromagnetic waves; the sheet-shaped paper-based body is distributed with symbol units of a film-shaped metal material; the symbol units are compared with the metal surface area of the symbol units in a unit volume in the paper-based main body, and the metal surface area of a unit volume in the middle of the planar lens is greater than that of the periphery of the planar lens. The planar antenna further comprises a feed source which is installed close to the incident plane; electromagnetic waves propagate in the planar lens in a curved path and converge to be emitted out of the planar lens. When the feed source moves, the application can realize wide-angle scanning of the beam, and in a scanning range of ±50 degrees, the gain of the planar antenna decreases by less than 2dB, and very high gain and aperture efficiency can be achieved.

A beam steering device includes a first mirror that reflects laser light incident in a first direction in a second direction, a second mirror that reflects the laser light reflected by the first mirror in a third direction, a first stage that integrally moves the first mirror and the second mirror in a direction parallel to the first direction, a second stage that is disposed on the first stage and moves the second mirror in a direction parallel to the second direction, and a holder that is disposed on the second stage and adjusts an orientation of a reflecting surface of the second mirror.

The application relates to a multi-beam wave control information forwarding method and device of a satellite-based station. The method comprises the following steps: receiving and storing wave control information; reading the wave control information, writing a beam ID, a time slot and a symbol symb as time index information into a CAM, and writing a pitch angle and an azimuth angle as wave control angle information into a RAM; searching the time index information in the CAM, reading corresponding wave control angle information from the RAM through address indexing; and packing and forwarding the read wave control angle information. The process effectively shortens the time from receiving the wave control information to completing the wave control information forwarding.