398 results about "Wide beam" patented technology

The invention relates to the technical field of communication, in particular to an airborne Tiantong phased-array antenna and an application method thereof. According to the method, phased-array antenna beams are driven to perform electronic scanning according to a geometric azimuth angle, beacon signal blind acquisition is performed in a preset airspace in a wide beam mode, and when an initial signal is detected, the mode is immediately switched to a narrow beam scanning mode; dynamically adjusting a phase weighting coefficient to realize pointing adjustment, so that a signal quality parameter is continuously converged in an optimal threshold interval; carrying aircraft maneuvering acceleration feedback is introduced, beam pointing offset is dynamically compensated based on a pre-constructed interference feature library, and signal fluctuation caused by a multipath effect is suppressed; and continuously checking a data validity flag bit of the main inertial navigation system, seamlessly switching to an antenna built-in inertial navigation data stream when a failure threshold is triggered, and activating a rapid recapture program to maintain zero interruption of a communication link. Through dual-source inertial navigation data fusion and intelligent beam control, rapid and accurate tracking of Tiantong satellites in an airborne environment is realized.

A transmission tower deformation monitoring device based on a phased array radar technology relates to the field of irregular contour metering, and comprises a map construction module used for constructing a regional digital map; the boundary determination module is used for near-field region boundaries; the signal acquisition module is used for acquiring a near-field echo signal of a near-field region through a narrow beam and acquiring a far-field echo signal of a far-field region through a wide beam; the calibration table construction module is used for constructing a signal intensity comparison table; the data processing module is used for determining effective monitoring data; the error calculation module is used for performing error calculation on the effective monitoring data to obtain a phase error and an amplitude error; and the parameter determination module is used for determining iron tower deformation parameters. According to the invention, the accuracy of transmission tower deformation monitoring can be improved.

The invention discloses a low-orbit satellite beam resource allocation method based on deep reinforcement learning, and the method comprises the steps: firstly building a satellite system model according to a low-orbit satellite system hopping beam scene, obtaining the communication traffic demand and geographic position of a ground user through a satellite traffic monitoring facility, and carrying out the preprocessing; secondly, carrying out user clustering on information of communication traffic demands of ground users, and dividing a ground cell into a hot spot area and a non-hot spot area; and then based on a satellite system model, establishing an optimization problem of multi-beam resource allocation and control, adopting a deep reinforcement learning method, dynamically adjusting a beam resource allocation strategy, allocating narrow beam resources to a hot spot area, and allocating wide beam resources to a non-hot spot area to realize system throughput maximization and user fairness. According to the method, the resource allocation problem in the low-orbit satellite hopping beam scene is effectively solved, and the throughput of a satellite system is improved while the user fairness is ensured.

The invention discloses a multi-beam cooperative scheduling method and a multi-beam cooperative scheduling system for low-orbit satellite communication, which mainly solve the problems of poor beam scheduling flexibility and difficulty in adapting to time-varying requirements in a high-dynamic environment in the prior art, and the implementation scheme of the multi-beam cooperative scheduling method comprises the following steps of: collecting online user information by a low-orbit satellite through a wide beam; a hopping beam position is generated by using adaptive clustering under the constraint of channel resources; a hopping beam scheduling algorithm based on deep reinforcement learning outputs an optimal scheduling strategy according to the real-time environment variable; and optimizing a beam hopping time frame structure in each scheduling period, covering accessed users in a beam position through spot beams, and sending service data and control information to complete efficient service transmission. The method can adapt to changes of user distribution and service requirements in low-orbit satellite communication, the utilization rate of spectrum resources is improved, communication delay is reduced, the overall performance and service quality of the system in a high-dynamic environment can be enhanced, and the method can be used for dynamic beam position division, hopping beam scheduling and hopping beam resource allocation in a multi-beam low-orbit satellite communication scene.

The invention belongs to the technical field of low-orbit satellite communication, and discloses a satellite system for jointly improving measurement and control data transmission and communication application efficiency. A control unit is responsible for completing satellite calendar attitude calculation of satellite broadcast, analyzing a satellite working mode switching instruction according to ground station information stored by a storage unit, and then sending the instruction to each module unit; the two baseband processing units both support on-orbit reconstruction and loading, wherein the baseband processing unit A is used for completing measurement and control signal processing or user wide beam access signal processing; the baseband processing unit B is used for completing communication service signal processing or data transmission signal processing; the two up-conversion units respectively carry out up-conversion processing on a service link signal and a measurement and control link signal in the signal processing module, and the two down-conversion units respectively receive signals of the phased array transceiver antenna and the wide beam transceiver antenna and complete down-conversion processing. The measurement and control link can support a satellite measurement and control function and a communication wide beam access function in a time-sharing manner.

The invention discloses a millimeter wave broadband dual circularly polarized antenna and an array. The millimeter wave broadband dual circularly polarized antenna comprises two layers of microwave medium substrates, a bonding medium, a grounding metal plate and a coaxial feed probe. Two E-shaped patch antennas, four small square patches and an L-shaped metal strip are printed on the upper surface of the upper-layer dielectric substrate, gaps are obliquely formed in the centers of the small square patches, the L-shaped metal strip is used for increasing port isolation, and the E-shaped patches excite the four small square patches to achieve the broadband radiation characteristic. And two coaxial feed probes are respectively connected with two output ends with 90-degree phase difference of the 3dB directional coupler on the lower surface of the lower-layer microwave dielectric substrate, sequentially penetrate through the lower-layer microwave dielectric substrate, the bonding medium, the grounding metal plate and the upper-layer microwave dielectric substrate, and are electrically connected with the two E-shaped patch antennas, so that circularly polarized radiation is realized. According to the invention, the circularly polarized antenna with wide beam width, wide impedance bandwidth, wide axial ratio bandwidth and dual polarization characteristics is realized, and the circularly polarized antenna is suitable for potential application requirements of millimeter wave frequency band wireless communication and satellite communication.

The invention relates to an ultra-wideband frequency reconfigurable tight coupling dipole array with wide beam scanning. The ultra-wideband frequency reconfigurable tight coupling dipole array comprises a plurality of antenna units, the antenna unit comprises a tight coupling dipole radiation unit, a reconfigurable layer, a wide-angle impedance matching structure, a feed structure and a metal floor; the wide-angle impedance matching structure, the tight coupling dipole radiation unit and the feed structure are sequentially located on the first dielectric plate from top to bottom, and the first dielectric plate is placed perpendicular to the horizontal plane. The reconfigurable layer, the metal floor and the first dielectric plate are vertically arranged in an intersecting mode, and the reconfigurable layer is located above the metal floor. The reconfigurable layer and the double-layer double-sided capacitor loading ring structure are used for achieving the frequency reconfigurable function of the ultra-wideband array, and meanwhile the high radiation efficiency and the large-angle scanning capacity of the ultra-wideband array are effectively guaranteed. In addition, the invention also designs a feed structure containing a capacitor loading short-circuit pin, so that no common-mode resonance in the working frequency band of the ultra wide band is ensured.

The invention discloses a beam switching antenna system based on a reconfigurable technology. The beam switching antenna system based on the reconfigurable technology comprises a multi-unit antenna array, a Nolan matrix feed network and a reconfigurable power divider. The reconfigurable power divider in the beam switching antenna system based on the reconfigurable technology can switch different working states, and the signal energy is further distributed by the Nolan matrix feed network, so that the output signal meets the amplitude and phase conditions of a single beam, a double beam or a wide beam to feed the multi-unit antenna array; therefore, flexible switching among a single beam, double beams and a wide beam is realized, and the method has the advantages of low system overhead, low power consumption, rich beam types and flexible switching. The method is widely applied to the technical field of wireless communication.

The invention belongs to the technical field of underwater target radiation noise measurement, and particularly relates to a sparse combination array measurement system and method for underwater target radiation noise measurement, a program and a storage medium. A sparse combined array formed by a sound pressure spiral double-cone volume array with a sparse structure and a sound pressure vector nested vertical linear array is designed, a combined array frequency-division testing scheme of a high-frequency volume array and a low-frequency vertical linear array is adopted, a combined measurement method of a sound pressure hydrophone and a vector hydrophone is utilized, a measurement frequency band is extended, and the measurement precision is improved. And effective measurement of the full-band radiation noise of the underwater target is realized. Through a sparse array arrangement structure and an improved constant-beam-width beam forming method, a two-dimensional steady constant-beam-width beam is obtained while the number of array elements is reduced and the array complexity is reduced, and an appropriate main lobe width and a lower side lobe level can be adjusted according to a measured target and a measurement distance. According to the method, the array element redundancy of the measurement array is reduced, and the method can be flexibly applied to various application scenes of underwater radiation noise measurement.

Provided are a communication method, system and related device, comprising: a satellite network device determining beams respectively corresponding to a plurality of beam coverage areas, the plurality of beam coverage areas comprising a first beam coverage area and a second beam coverage area, the beams corresponding to the first beam coverage area comprising a plurality of beams of a first type, and the beams corresponding to the second beam coverage area comprising a plurality of beams of a second type; the beams corresponding to the second beam coverage area comprise a beam of a second type, the signal coverage area of the beam of the first type on the ground is smaller than the signal coverage area of the beam of the second type on the ground, and the UE density of the first beam coverage area is greater than the UE density of the second beam coverage area; the satellite network equipment sends SSBs to the multiple beam coverage areas based on the beams corresponding to the multiple beam coverage areas, and the SSBs are used for the UE to access the satellite network equipment. The coverage rate of the beam coverage area is improved through the second type of wide beams, and the failure rate of UE access in the beam coverage area with large UE density is reduced through the first type of beams.

The invention provides a wide and narrow wave beam adjustable array antenna, which comprises at least two groups of sub-arrays, each group of sub-arrays comprises at least one high-frequency dual-channel antenna, the side edge of each high-frequency dual-channel antenna is provided with a reflection boundary, and the reflection boundary is driven by a lifting device to ascend and descend. The high-frequency dual-channel antenna works in a corresponding wave beam working mode under the condition that the reflection boundary is at a plurality of different heights; wherein the beam working mode comprises a wide beam mode, a first conventional antenna mode and a second conventional antenna mode, and the beam width of the first conventional antenna mode is different from that of the second conventional antenna mode. According to the invention, the beam width can be adjusted by adjusting the height of the reflection boundary, so that the requirements in different scenes are met.

The invention discloses a PT symmetrical hot-pressing resistance MEMS wind speed and wind direction sensor. The sensor comprises four groups of PT symmetrical MEMS resonators which are orthogonally distributed and have hot-pressing resistance feedback; the PT symmetrical MEMS resonator comprises two cantilever beam resonators with completely same structures, a coupling spring beam connected with the two resonators, and a constant current source connected with one resonator, each cantilever resonator comprises two anchor areas, a wide beam connected with the anchor areas, a narrow beam with a piezoresistive effect, a warped thin plate structure and external electrodes located on the two sides of the thin plate structure. Wind speed and wind direction signals are converted into rigidity change of the resonator array through mechanical action by means of a warped thin plate structure, and the rigidity change enables the PT symmetrical MEMS system to deviate from an EP point, so that system frequency splitting is caused. As the frequency splitting quantity of the PT symmetric system is in direct proportion to the square root of the disturbance quantity, the wind speed and direction sensor can detect tiny wind speed signals, and has the advantages of very high sensitivity, simple process, high integration level and the like.

The invention discloses a communication method and device, relates to the technical field of communication, and can enable terminal equipment to better access network equipment and improve the communication quality of the terminal equipment and the network equipment. The method comprises: when a first network device satisfies a first preset condition, adjusting a beam from a first beam to a second beam; and after the wave beam is adjusted to the second wave beam, when a second preset condition is satisfied, the wave beam is adjusted to the first wave beam from the second wave beam. Wherein the first preset condition is that in the coverage range of the first network device, the number of the terminal devices with the moving speed larger than or equal to a first preset threshold value is larger than or equal to a second preset threshold value; the beam type of the first beam is a narrow beam, and the beam type of the second beam is a wide beam; the second preset condition is that in the coverage range of the first network equipment, the number of the terminal equipment with the moving speed greater than or equal to the first preset threshold is smaller than a second preset threshold.

The invention discloses a hopping beam access method and device, electronic equipment and a nonvolatile storage medium. The method comprises the following steps that: network side equipment receives position information reported by user equipment from a wide beam channel, and the network side equipment is configured with a wide beam signal and a narrow beam signal; the network side equipment adjusts the direction of a service beam of the narrow beam signal according to the position information, and the adjusted service beam points to the user equipment; and the network side device provides an access service for the user equipment based on the service beam of the narrow beam signal. According to the method and the device, the technical problem that the user access efficiency is extremely low and even the user cannot access for a long time due to the fact that the network side equipment does not know the position of the user in a hopping beam access method in the related technology is solved.

The invention relates to the technical field of antennas, in particular to a high-isolation double-frequency common-caliber miniaturized phased-array antenna which comprises a high-frequency-band linear polarization end-fire metal patch array structure, a low-frequency-band linear polarization end-fire metal patch array structure, a public metal reflection floor and a single-layer dielectric substrate. Radiation structures of the high-frequency-band linear polarization end-fire metal patch array structure and the low-frequency-band linear polarization end-fire metal patch array structure are formed by improved dipoles of microstrip balun feed with out-of-band rejection, so that linear polarization is achieved, and then the dipoles are fed through the improved microstrip balun with out-of-band radiation rejection. The suppression on high frequency is further deepened and the decoupling bandwidth is expanded; in addition, a decoupling structure is added between the adjacent common-frequency antennas to improve the isolation and radiation capability between the adjacent common-frequency antenna units, high isolation and wide beam coverage of the dual-frequency common-aperture phased-array antenna can be realized, the performance of the antenna is improved, and the dual-frequency common-aperture phased-array antenna is simple in process and low in cost.

The present disclosure provides a wide beam radiation leakage coaxial cable, which includes an inner conductor, an insulating layer, an outer conductor and a sheath coaxially nested from inside to outside in sequence, at least two columns of slot groups are provided on the outer conductor, the columns of slot groups are distributed at different angles in the circumferential direction of the outer conductor, the included angle between two adjacent columns of slot groups is α=γ / n, where γ is the target radiation width, n is the number of columns of slot groups, each column of slot groups includes a plurality of slot arrays periodically arranged in the axial direction of the outer conductor, the pitch of each column of slot groups is the same, the pitch phase of each column of slot groups on the same leakage cable section is consistent, and each slot array includes a plurality of slots.

The invention belongs to the technical field of communication antennas, and provides a wide-beam patch antenna which comprises a radiation patch, a grounding plate, a feed structure, a dielectric substrate and at least one group of grounding metal coupling columns. The grounding metal coupling column is located in a current belly area of a main current mode of the radiation patch, forms strong coupling with a main mode current, excites and establishes a secondary current path perpendicular to a horizontal plane direction, and enhances a low elevation angle component of antenna radiation and a beam width in a polarization direction; by establishing a four-coupling-column structure of an orthogonal mode cooperative enhancement mechanism, the half-power beam width in two orthogonal polarization directions can be effectively expanded, and wide-beam circular polarization radiation of the antenna is further realized; in addition, a single-layer dielectric substrate structure is adopted, the antenna is light and low in cost, wide beam performance is guaranteed, meanwhile, cost control and manufacturing reliability are considered, and the antenna has good feasibility.

Two-sided stepped three-line parallel resonators are arranged on the upper side and the lower side of a chamfer of a trapezoidal top-opened resonant cavity, and the wave beam broadening effect, the radiation impedance adjusting effect and the resonance effect of the two-sided stepped three-line parallel resonators on vertical polarization radiation are utilized; by combining the resonance, coupling, beam broadening and other effects of the trapezoidal top opening resonant cavity and the resonance of the two substrate integrated waveguide resonant cavities, wide beam end radiation with four-order filtering response is realized, and the vertical polarization work, the function fusion degree, the beam broadening degree, the frequency selectivity, the size and the cross polarization level can be considered.

A method of controlling light beam angles of light beams provided by a light fixture includes obtaining a narrowest and a widest beam angle values of a beam angle of a first light beam provided by a first cluster of LED-optics units and obtaining a narrowest and a widest beam angle values of a beam angle of a second light beam provided by a second cluster of LED-optics units. The method also includes controlling the first and second clusters of LED-optics units such that the beam angles of the first light beam and the second light beam are bound by a smaller one of the narrowest beam angle values of the beam angles of the first light beam and the second light beam and by a smaller one of the widest beam angle values of the beam angles of the first light beam and the second light beam.

Aspects of the disclosure relate to user equipment (UE)-assisted beam broadening in a wireless communication system configured to employ beamforming. A UE may determine downlink channel characteristics by monitoring for, receiving, and measuring a suitable downlink reference signal. Based on the channel characteristics the UE may select a wide beam corresponding to a set of narrow beams. The UE may then transmit a report identifying the selected wide beam by indicating a direction of the selected wide beam and an angular width of the selected wide beam. Other aspects, embodiments, and features are also claimed and described.

Lighting system having visible-light source including semiconductor light-emitting devices arranged for generating plurality of visible-light emissions having range of color points including cool to very cool white color point for daytime and warm to very warm white color point for nighttime. Optical system arranged for causing some visible-light emissions to have range of beam widths including relatively wide and narrow beam widths. Mounting system causing range of beam directions. Control system causing visible-light emissions to include daytime configuration having cool to very cool white color point and relatively wide beam width, and nighttime configuration having warm to very warm white color point and relatively narrow beam width. Daytime configuration includes control system for causing visible-light emissions to include lateral- or up-light emissions, promoting relatively high equivalent melanopic lux. Nighttime configuration includes control system for causing visible-light emissions to include down-light emissions promoting relatively low equivalent melanopic lux.

The invention discloses a wide-beam metal frame mobile phone antenna, which comprises a metal frame provided with a plurality of opening gaps and a plurality of short circuit columns, the metal frame is divided into a plurality of frame components to form monopole antennas, and at least parts of the monopole antennas are positioned on the same straight line. According to the wide-beam metal frame mobile phone antenna, the plurality of opening gaps are formed in the metal frame of the wide-beam metal frame mobile phone antenna, so that the plurality of monopole antennas are formed on the metal frame, the multi-element monopole antenna array is further formed, the beam width can be expanded, the radiation efficiency can be improved, and the effects of wide beam and high gain can be achieved; the metal frame serves as an outer frame of the intelligent terminal, can play a role in fixing and protecting the intelligent terminal, and also serves as a radiator of an antenna of the intelligent terminal, so that the radiation performance of the intelligent terminal is improved, extra space does not need to be occupied, and the compactness of the intelligent terminal is improved. The antenna can be widely applied to the technical field of terminal equipment antennas.

The invention provides a foldable electronic device. The foldable electronic device comprises an antenna. The working frequency band of the antenna comprises a satellite communication frequency band. The antenna comprises a radiator and a parasitic branch. A part of the conductive frame of the housing is used as a radiator and a parasitic branch. When the foldable electronic device is in an unfolded state, the radiator and the parasitic branch can generate radiation beams facing the two sides of the top of the foldable electronic device, so that the antenna has a wide beam characteristic. When the foldable electronic device is in the unfolded state, a user does not need to change the posture of holding the foldable electronic device during satellite communication, and the experience of the user during satellite communication can be improved.

This disclosure describes procedures for UE and network on initial access, to ensure the normal operation of system and to obtain high energy efficiency and obtain high access reliability. Consider power efficiency, wide and narrow beams are considered in NTN systems to achieve more efficient DL / UL transmission scheduling. However, there may be EIRP split issue for beam differentiation. For example, 50%EIRP are allocated for wide beam and 50%EIPR are allocated for narrow beam, then there may be -3db loss compared with no EIRP split. In view of mentioned issue, novel schemes for Synchronization signal and PBCH design in NTN are mentioned in this patent.

The invention relates to a reconfigurable reflection wide beam generation metasurface design method for enhancing indoor signal coverage, and belongs to the technical field of artificial electromagnetism, and the method comprises the following steps: designing a reflection metasurface unit which can correspond to different phase responses by changing the capacitance value of an adjustable capacitor; the value of the adjustable capacitor is selected to regulate and control the phase, and 1-bit phase quantization is realized; estimating the scale of the metasurface reflective array and the distance between the feed source and the center of the metasurface reflective array; a phase distribution diagram is calculated according to the phase compensation principle, the compensation phase of each unit in the metasurface reflection array and the corresponding capacitance value are searched from the phase distribution diagram, the units are arranged into a square reflection array, and after a feed source signal is added, the reflection array can generate an emergent wave beam with a preset angle; by changing the rotation angle of the capacitor moving plate, different phase responses to the unit are realized, and the array phase of the preset angle is compensated, so that reconfigurable beam generation can be realized under incident waves.

Methods, systems, and devices for wireless communication are described. For instance, a network entity may receive control information indicating a set of candidate geolocations within a target coverage area for the network entity. The network entity may transmit a signal that is beamformed via a set of antenna elements of an antenna array of the network entity in accordance with a set of antenna beamforming weights. The set of antenna beamforming weights may be identified based on a beam pattern performance criterion applied to a set of candidate radiation patterns of a spatial envelope model. The spatial envelope model may be based on a set of directions between the antenna array of the network entity and the set of candidate geolocations as well as a set of pathloss values associated with the set of candidate geolocations.

The invention relates to the field of millimeter wave radars, and discloses a 45-degree polarized array waveguide antenna for a millimeter wave radar, which comprises a metal groove layer; a slot array element layer; the slot array element layer and the metal slot layer are connected in a vertical lamination mode; the metal groove layer is provided with a plurality of radiation grooves; radiation grooves with the same number are formed in the metal groove layer at the corresponding positions of the slot array elements; the radiation slot indirectly increases the effective radiation aperture area of the antenna. The invention provides a method for solving the problems of low array pattern sidelobe, low gain and wide beam width of the N-element waveguide array antenna in a miniaturized application scene.

Provided are a communication method and a communication device, the method comprising: receiving a first synchronization signal, receiving a second synchronization signal, the width of a sending beam of the first synchronization signal being greater than the width of a sending beam of the second synchronization signal, the coverage range of the sending beam of the first synchronization signal comprises the coverage range of the sending beam of the plurality of second synchronization signals, the method sends the first synchronization signal by using a wider beam, so that the number of the first synchronization signals covering the terminal equipment is greater than the number of the second synchronization signals covering the terminal equipment within a period of time; and the time required by the terminal equipment in the initial access process is reduced.

The present disclosure relates to the field of communications, and provides a communication sensing method and system and a related device. The method comprises: using a plurality of downlink communication symbols in a specific time slot of a communication signal to roughly measure a target wide beam where a target object is located; if the target wide beam exists, multiplexing sensing transmission symbols on the downlink communication symbols in front of a guard interval symbol in the specific time slot, to send a mixed data stream of a data stream of the communication signal and a data stream of a sensing signal obtained on the basis of mixed precoding and mixed beam forming; and during the guard interval symbol in the specific time slot, using sensing reception symbols for sensing reception, to sense a target narrow beam where the target object is located. The method provided by the present disclosure can improve the wireless resource utilization, and provide sensing capabilities under full-area coverage with minimal impact on communication network performance, providing additional sensing services at a relatively low cost.

The invention discloses an ultra-wide beam broadband four-arm helical antenna based on parasitic loading. The ultra-wide beam broadband four-arm helical antenna comprises a circular dielectric substrate, an arc parasitic radiation arm, a cylindrical support, a flexible dielectric substrate, a stepped impedance winding helical arm, a floor and a coaxial feed. The antenna can realize wide axial ratio beam width and wide half-power beam width in a working frequency band range of 2-2.5 GHz, meanwhile, the antenna has a relatively small size, the stability, the anti-interference capability and the coverage range of a wireless communication system are improved, and the antenna can flexibly cope with various complex scenes. In addition, the antenna works in a wide frequency band and has a wide 3-dB axial ratio beam width in the wide frequency band, for example, the 3-dB axial ratio beam width at a 2.2 GHz frequency point reaches 235 degrees; the 3-dB axial ratio beam width at the 2.3 GHz frequency point reaches 252 degrees; and the 3-dB axial ratio beam width at a 2.4 GHz frequency point reaches 236 degrees.