85 results about "Reconfigurable array" patented technology

The invention discloses a linear polarization scattering reconfigurable array antenna, which belongs to the technical field of antenna manufacturing and comprises an antenna unit, an extension socket, a transmission type phase shifter and an inductor. The antenna unit comprises a radiation patch, a first dielectric substrate, a metal via hole, a metal patch, a second dielectric substrate, a perforated metal floor, a third dielectric substrate, a feed metal column and a radio frequency coaxial connector, the radio frequency coaxial connector is connected with the radiation patch through the feed metal column, and a variable capacitance diode and a capacitor are arranged on the transmission type phase shifter. The transmission type phase shifter is connected with the radiation patch through the feed metal column, the variable capacitance diode is connected with the punching metal floor, the bottom of the third dielectric substrate is provided with a direct current bias line, the direct current bias line is connected with the transmission type phase shifter through the inductor, and the transmission type phase shifter is connected with the radiation patch through the feed metal column. According to the invention, flexible regulation and control of antenna scattering beams can be realized, and the antenna has the characteristics of flexible control, fast response speed and high radiation efficiency.

The invention discloses a laser wireless energy transfer dynamic MPPT control method based on an RL-PSO hybrid algorithm and a reconfigurable array system, and aims to solve the problems of power oscillation and mismatch loss caused by light spot offset of a photovoltaic array under laser dynamic irradiation. According to the method, reinforcement learning (RL) and particle swarm optimization (PSO) are fused, dynamic parameters such as the light spot moving speed and irradiance are sensed in real time through the RL, the inertia weight and learning factors of the PSO are adjusted in a self-adaptive mode, and collaborative optimization of global search and local tracking is achieved. According to the system level, a reconfigurable photovoltaic array is designed, and according to data of a light spot position sensor, battery series-parallel topology is dynamically adjusted through a switch matrix, and current matching is optimized. According to the method, double-loop control is adopted, wherein an outer-layer RL decision module dynamically switches PSO working modes according to the environment, and an inner-layer PSO module optimizes the working voltage. The system efficiency in a dynamic scene can be improved by 15%-30%, mismatch loss is reduced by 40% or above, and the method is suitable for unsteady-state energy supply scenes such as unmanned aerial vehicles and mobile robots.

The invention discloses a broadband circularly polarized scattering reconfigurable array antenna based on variable capacitance diode loading, and the broadband circularly polarized scattering reconfigurable array antenna is composed of a plurality of scattering reconfigurable antenna units. The scattering reconfigurable antenna unit comprises a resonance structure used for radiating or receiving signals and a feed and phase shift structure arranged on the lower surface of the resonance structure. The feed and phase shift structure comprises a broadband directional coupler and a reflection type broadband phase shifter. When the scattering reconfigurable antenna unit is in a radiation working state, the broadband directional coupler radiates energy to the resonant structure; when the scattering reconfigurable antenna unit is in a scattering working state, the broadband directional coupler transmits energy to the reflection type broadband phase shifter, and the reflection type broadband phase shifter regulates energy of secondary radiation of the reflection type broadband phase shifter according to bias voltage applied to an internal variable capacitance diode. The array antenna provided by the invention is wide in working frequency band, and the radiation performance can be ensured while the scattering characteristic is reconfigurable.

The embodiment of the invention provides a butterfly computing unit, a butterfly computing unit array, a reconfigurable array and a chip. The butterfly computing unit comprises a first-in first-out cache unit, a butterfly computing module, a multiplier module, a twiddle factor storage module, a first external interface and a second external interface. The first external interface inputs radix-2 or radix-3 FFT data. And the first-in first-out cache unit caches the input data or the data output by the butterfly computing module or the data output by the multiplier module. And the butterfly calculation module receives the data output by the first-in first-out cache unit, and performs butterfly calculation to obtain butterfly calculation result data. And the multiplier module obtains the twiddle factor from the twiddle factor storage module and performs multiplication calculation on the data output by the first-in first-out cache unit or the data output by the butterfly calculation module according to the twiddle factor to obtain multiplication calculation result data. And the second external interface sends out multiplication calculation result data. According to the invention, the structure of the butterfly computing unit is simplified, and the hardware resource consumption is reduced.

The invention relates to a polarization reconfigurable array antenna beam forming method using a polarization selection dictionary matrix, and aims to solve the problems that an existing reconfigurable array polarization selection algorithm is low in calculation efficiency, high in parameter sensitivity and incapable of achieving beam scanning. The method comprises the following steps: firstly, giving an expected main polarization direction and a cross polarization direction; then, according to the polarization state which can be provided by each unit, constructing a polarization selection dictionary matrix used for selecting a unit polarization mode; then, according to the polarization selection dictionary matrix and a given polarization direction, constructing a corresponding main polarization beam matrix and a cross polarization beam matrix; and finally, converting a non-convex polarization selection problem into a convexity problem for solving. Compared with an existing stochastic optimization algorithm in the field of polarization reconfigurable array beam forming, the method has higher efficiency and better stability, so that the method has higher practical value.

A precoding method, performed by a reconfigurable intelligent surface (RIS) array, includes determining a phase shift list corresponding to the RIS array, in which the phase shift list includes at least one row of phase shift sequence, the phase shift sequence includes a phase shift of each RIS array element in the RIS array, each row of phase shift sequence is configured to cause the RIS array to reflect an incident signal along a pair of reflection angles, and each row of phase shift sequence corresponds to one index value; acquiring a first index value from a user equipment (UE); determining a first phase shift sequence corresponding to the first index value from the phase shift list; and precoding the RIS array by configuring the phase shift of each RIS array element in the RIS array according to the first phase shift sequence.

The invention discloses an operator library generation method for a coarseness reconfigurable AI array and application, and relates to extraction of frequent / common operators suitable for the coarseness reconfigurable AI array from computational graphs of various convolutional neural network inference models, and the method comprises the steps: converting the computational graphs of the CNN neural network inference models into directed acyclic graphs; extracting a common operator in the directed acyclic graph, and segmenting the directed acyclic graph to obtain a plurality of sub-graphs; defining the sub-graphs which appear more frequently as frequent sub-graphs which are called coarse-grained operators; when the storage space required by the coarse-grained operator for calculation exceeds the capacity of an on-chip storage controller, dividing the coarse-grained operator into fine-grained operators based on the size of the feature map; and constructing an operator library oriented to the coarseness reconfigurable AI array by using a coarseness operator and a fine granularity operator. According to the method, the general operator library is constructed by capturing a cross-model generality calculation mode, the workload of CNN operator development is reduced, and the difficulty of ecological construction of AI chip application software is reduced.

The invention discloses a fast synthesis and beam forming method for an arbitrary polarization reconfigurable array. The fast synthesis and beam forming method can be widely applied to a low-cost large-scale phased array. According to the invention, the polarization states of the antenna units and the array beamforming algorithm are switched through the radio frequency switch, and beamforming of any polarization state can be realized under the condition that each antenna unit only uses one radio frequency channel. In the design process, firstly, polarization state arrangement is solved with the information entropy of the polarization reconfigurable array as an optimization target, an optimal array topological structure is obtained, and then the excitation amplitude and the excitation phase are solved with the expected polarization state and the expected scanning angle. The maximum innovation of the invention lies in that under the condition that each antenna unit only uses one radio frequency link, the wide-angle scanning capability of any polarization beam is realized through the irregular distribution of the polarization state.

The invention provides an end-to-end compiling method of a coarse-grained reconfigurable array based on hierarchical data streams, and relates to the technical field of automatic compilation, and the method comprises the following steps: converting a to-be-compiled programming code into an optimized intermediate representation of an MLIR, converting the optimized intermediate representation into a front-end data stream of a plurality of hierarchical data streams, converting the front-end data stream into a CGRA rear-end data stream according to a preset unloading strategy, and storing the CGRA rear-end data stream in the optimized intermediate representation; and unloading the Kernel kernel code to obtain a target kernel code so as to generate CGRA mapping configuration information of the kernel code data flow diagram. And finally, constructing and obtaining an executable file in combination with a host object file generated by the host side code. Through the method and the device, the problems that during CGRA end-to-end compiling, the accelerated kernel code is labeled through manual proma labeling, so that code editing is time-consuming and labor-consuming, data transmission and link of a host side code and a CGRA kernel side code are ignored, and the CGRA acceleration performance cannot be effectively exerted are solved.

A reconfigurable array mode sharing method for an MIMO frequency modulation millimeter wave radar array comprises the steps that distance dimension fast Fourier transform and speed dimension fast Fourier transform are carried out on echo signal data matrixes obtained after analog-to-digital conversion is carried out on the basis of different modes, and distance Doppler spectrums of different receiving and transmitting antenna combinations are obtained; different modes with the same gain of the MIMO radar system are combined, the mode corresponding to the maximum virtual array aperture in the horizontal direction and the maximum virtual array aperture in the pitching direction under the gain is selected from the combination with the same gain, the two modes are subjected to angle solution and matching, angle solution of the maximum virtual array aperture is achieved in a combined mode, and the maximum virtual array aperture is obtained. A digital beam forming method is used for matching angle information of the two dimensions obtained by solving under a horizontal dimension virtual array and a pitching dimension virtual array with the maximum aperture. According to the invention, when a virtual array reconfigurable technology or an MIMO technology is used, the maximum array aperture in the original same gain mode can be effectively increased by using the complementary effect between different reconfigurable array modes.

A method is provided for automatically placing and routing processing elements (PEs), where each PE has limited connectivity to its neighbors. The method may obtain layout primitive (PP) position window information that defines possible positions of a set of PPs within a coarse-grained reconfigurable array (CGRA). The method may obtain hardware constraints with respect to the PE array, the hardware constraints including local connectivity constraints and remote connectivity constraints. The method may receive a computational graph (CG) representing a mathematical expression to be computed by the PE array. The method may determine a location of the PE in the PE array based on the CG, the PP location window information, and hardware constraints.

The invention discloses an electromagnetic wave emission method and an integrated reconfigurable metasurface based on 4D printing, and belongs to the technical field of microwaves. The electromagnetic wave emission method comprises the following steps: acquiring a target voltage; based on the target voltage, controlling the 4D switch to deform towards a target direction, and obtaining equivalent capacitance corresponding to the deformed 4D switch; and based on the equivalent capacitance, regulating and controlling an electromagnetic wave signal and controlling the radiating surface to emit the electromagnetic wave signal. According to the electromagnetic wave emission method, the electromagnetic wave signal can be regulated and controlled by applying the voltage based on the requirement, the requirements of various application scenes can be met, the weight and cost of the reconfigurable array antenna are reduced, and the manufacturing process is simplified.

The invention provides a near-field feed low-complexity reconfigurable antenna system, which belongs to the technical field of millimeter wave communication antennas and comprises a 1-bit phased array, a waveguide feed horn array and an air gap between the 1-bit phased array and the waveguide feed horn array. The 1-bit unit is composed of two magnetoelectric dipoles, and two diodes are integrated in the receiving unit to achieve 1-bit phase control. According to the 1-bit reconfigurable magnetoelectric dipole phased array disclosed by the invention, one horn mouth surface is used as a near-field feed source of the 2 * 2 magnetoelectric dipole sub-array, so that not only is the uniformity of aperture irradiation ensured through near-field coupling, but also the number of required phase shifters is reduced, and the excitation of the 1-bit reconfigurable magnetoelectric dipole phased array is conveniently realized. The waveguide phase shifter is directly integrated in the horn array antenna, by means of the working phase range wide enough, the phase shifter can effectively achieve phase distribution needed by array near-field feed, and mirror lobes in scanning beams are successfully suppressed. The reconfigurable array antenna is high in aperture efficiency, low in profile and simple in structure, and has the broadband scanning capability.

The invention discloses a data transmission system and host equipment, and the system comprises a DMA engine which is used for executing data migration between main equipment and an external bus; the programmable protocol adaptation layer supports dynamic loading of time sequence templates of two or more protocols in the ICs, the I3C and the SPIs; the security isolation module is used for blocking DMA access to an unauthorized area in real time through a hardware address permission lookup table; the dynamic buffer management unit is provided with a reconfigurable FIFO (First In First Out) array, and the depth and the bit width of the dynamic buffer management unit can be dynamically configured along with a protocol mode; and the mode management unit refreshes the buffer area and verifies the validity of the data during mode switching. The host equipment comprises a central processing unit and the system, and the CPU is responsible for configuration management and receiving security exception interruption. According to the method, hardware-level security isolation and dynamic buffer distribution are realized, the system security and reliability are improved, the resource overhead is remarkably reduced, the mode switching residual data is eliminated, and the transmission stability in a multi-protocol scene is ensured.

This application belongs to the field of antenna technology and relates to a polarization rotation unit and a beam reconfigurable array antenna. The polarization rotation unit includes a patch layer, a dielectric layer, and a control layer. The patch layer includes a first radiating patch and four spaced arrays of second radiating patches. The first radiating patch is square, and any diagonal of the first radiating patch forms a 45° angle with any diagonal of the dielectric layer. The second radiating patches include two or more rectangles of different sizes, with two sides of any adjacent rectangles collinear, and each rectangle is axially symmetric about one diagonal of the dielectric layer. The first radiating patch and each of the second radiating patches are connected by diodes, with diodes in the same direction having the same direction and diodes in different directions having opposite directions. The control layer is connected to the patch layer to control the on and off states of each diode and supports programmability. This application can realize polarization rotation and state reconfigurability.

The present invention concerns a coarse-grained reconfigurable array architecture (10) adapted to carry out tasks comprising: - a network (12) of processing elements (PE), - a network (14) of memory units (MU), - a compiler (18) converting the tasks to be carried out into elementary operations consisting in applying a calculation on input data to calculate an output data by executing input data exchange instruction, a calculation instruction and an output data exchange instruction, - a memory controller (20) fetching the input data exchange, calculation and output data exchange instructions, the memory controller (20) sending each calculation and output data exchange to the appropriate processing element (PE) to execute said instructions, and the memory controller (20) sending each input data exchange instruction to the appropriate memory unit (MU) to execute said instruction.

The application relates to an inter-cluster multi-task dynamic scheduling controller and method based on a reconfigurable computing array, which comprises a task sliding window unit configured to extract task information from a task queue to form a sliding window; a state register unit configured to receive and store real-time state information fed back by a plurality of reconfigurable array clusters; a scheduling control unit connected with the task sliding window unit and the state register unit respectively and configured to generate a scheduling decision according to the task information in the sliding window and the real-time state information of each reconfigurable array cluster; and a task distribution unit connected with the scheduling control unit and configured to receive a task instruction to be issued and the scheduling decision, modify a cluster addressing field in the task instruction according to target cluster information in the scheduling decision, and issue the modified task instruction to the reconfigurable array cluster indicated by the target cluster information, so as to solve the problem of waste of computing resources in the prior art.

The invention provides a coarse-grained reconfigurable array system for deep learning and a computing method, which can be applied to the technical field of reconfigurable arrays. The system comprises a controller used for determining input information input to at least one processing unit, and the input information comprises to-be-calculated data, an operation instruction and a mode control instruction; and the processing unit group comprises a plurality of processing units, the plurality of processing units form a reconfigurable array, and each processing unit is used for performing floating-point operation or integer operation on the data to be calculated based on the mode control instruction and the operation instruction to obtain an operation result. The processing unit comprises an operand selector used for determining first operation data and second operation data from the neighbor operation result, the weight data and the input data based on the operation instruction; and the arithmetic logic subunit is used for performing floating-point operation or integer operation on the first operation data and the second operation data based on the operation subinstruction corresponding to the mode control instruction to obtain an operation result.

A method for sharing reconfigurable array modes in a MIMO frequency-modulated millimeter-wave radar array is proposed. Based on the echo signal data matrices obtained after analog-to-digital conversion of different modes, range-dimensional Fast Fourier Transform (FFT) and velocity-dimensional FFT are performed on them respectively to obtain the range-Doppler spectrum of different transmit / receive antenna combinations. Different modes with the same gain in the MIMO radar system are combined. Among the combinations with the same gain, the mode corresponding to the largest virtual array aperture in the horizontal and elevation directions under that gain is selected. The angles of these two modes are resolved and matched separately, and then combined to achieve the maximum virtual array aperture resolution. Digital beamforming is used to match the angle information obtained under the maximum aperture virtual array in the horizontal and elevation dimensions. This invention can effectively increase the maximum array aperture in the original modes with the same gain by utilizing the complementary effect between different reconfigurable array modes while using virtual array reconfigurable technology or MIMO technology.

The present invention concerns a coarse-grained reconfigurable array architecture (10) adapted to carry out tasks, the tasks to be carried out being converted into elementary operations consisting in applying a calculation on input data to calculate an output data by executing input data exchange instruction, a calculation instruction and an output data exchange instruction, the architecture comprising: - a network (12) of processing elements (PE), - a network (14) of memory units (MU), - a memory controller (20) fetching the input data exchange, calculation and output data exchange instructions, the memory controller (20) sending each calculation and output data exchange to the appropriate processing element (PE) to execute said instructions, and the memory controller (20) sending each input data exchange instruction to the appropriate memory unit (MU) to execute said instruction.

The present disclosure provides a three-dimensional coarse-grained reconfigurable array architecture system and its control method. The system includes multiple first arrays and multiple second arrays, wherein each first array includes multiple first processing elements, multiple first memory units, and multiple first switches, and each second array includes multiple second processing elements, multiple second memory units, and multiple second switches. The system employs an interleaved stacking arrangement for the first arrays and second arrays, and dynamically manages the activation and deactivation states of various units through a configuration controller to execute neural network model computation tasks. The technical solution of the present disclosure can significantly improve data transmission efficiency, increase resource utilization flexibility, and achieve optimal allocation of hardware resources.

The present disclosure provides a configuration storage device of a reconfigurable array, a system containing the same, and a control method. The configuration storage device of the reconfigurable array includes: a bit input terminal; a bit output terminal; a selection unit; a bit data storage unit; in the configuration state, the selection unit is configured to receive configuration bit data from the bit input terminal, transmit the configuration bit data to the bit data storage unit, and store the configuration bit data in the bit data storage unit; and also includes a rotation state and an output state. In addition, the present disclosure also provides a configuration storage system of a reconfigurable array, and a corresponding control method of the system. Some embodiments of the present disclosure aim to solve the problems of high configuration switching time and uncertain configuration switching time in the prior art without increasing excessive complexity and area overhead.

The present invention discloses a method and system for constructing a multifunctional adaptive directional backtracking Doppler stealth cloak. Specifically, the method comprises: constructing a 2-bit phase shifter based on a reconfigurable microstrip transmission line, adjusting the length of the microstrip transmission line so that the phase shifter achieves four discrete phase states; analyzing the generalized conjugate relationship between the receiving phase and the radiating phase of the array elements in the antenna array, constructing a reconfigurable Van Atta array model based on the 2-bit phase shifter, and achieving adaptive directional backtracking in the four discrete phase states; introducing time modulation into the reconfigurable Van Atta array model to achieve Doppler frequency compensation for the adaptive directional backtracking, thereby obtaining a Doppler cloak; and introducing spatial modulation into the reconfigurable Van Atta array model to achieve radar cross-section (RCS) reduction during the adaptive directional backtracking, thereby obtaining a multifunctional Doppler stealth cloak. This method can significantly improve the efficiency of the multifunctional adaptive directional control of the Doppler stealth cloak.

The present application relates to the technical field of data cleaning, and more particularly to a stream data cleaning accelerator based on FPGA, which comprises a coarse-grained reconfigurable array cleaning pipeline arranged in a programmable logic region of an FPGA chip and comprising a plurality of processing units; each processing unit is internally provided with an arithmetic logic operation core, a local register stack, a crossbar router and an instruction buffer; a configuration controller is used to issue function configuration instructions to each processing unit in the coarse-grained reconfigurable array cleaning pipeline; a quantitative perception stream neighbor interpolation engine; an interpolation value generation module is used to generate interpolation values according to a precise neighbor set; and a data interface is used to receive original data streams to be cleaned and output cleaned data records. The problems of insufficient throughput of traditional data cleaning schemes and excessively high computational complexity of K-neighbor interpolation methods are effectively solved.

The application relates to a linearly polarized in-band co-polarized scattering reconfigurable array antenna, which comprises antenna modules arranged in an array by a plurality of same antenna units. Each antenna unit adopts a multi-layer stacked structure: from top to bottom, a radiation patch, a first dielectric substrate, a metal patch, a second dielectric substrate, a metal ground plate and a third dielectric substrate are sequentially arranged. A plurality of metalized through holes are arranged on the center line of the first dielectric substrate, and the metalized through holes, the metal patch and the metal ground plate jointly form a resonator. Each unit is also integrated with a reflective phase shifter, which comprises a microstrip transmission line, a feeding metal column, a metal short circuit column and a varactor diode. The feeding metal column penetrates through the layers and is connected with the radiation patch, and the metal short circuit column is connected with the metal ground plate. The varactor diode receives external control through a direct current bias line, the reflection phase of the unit is adjusted by changing the bias voltage, and the in-band co-polarized scattering reconfigurable function of the antenna is realized. The device can realize flexible regulation and control of a wide range and low coupling of scattering characteristics while maintaining high stable radiation characteristics.

The invention belongs to the technical field of intelligent power grids, and particularly relates to an intelligent substation RIS sensing and communication integrated system and method and electronic equipment, and the system integrates wireless communication optimization, equipment state monitoring, environment sensing and intelligent control. The system comprises a plurality of RIS units capable of independently regulating and controlling electromagnetic reflection characteristics, and each RIS unit is integrated with an embedded multi-physical field sensor. The communication perception fusion control module is in communication connection with the RIS array module and is used for jointly processing the wireless channel state information and the sensor monitoring data and generating an RIS regulation and control instruction; and the dynamic reflection regulation and control module is used for regulating the phase distribution and the reflection beam direction of the RIS unit in real time according to the regulation and control instruction so as to realize cooperative control of communication quality optimization and equipment state perception. The method plays an important role in improving the intelligent level of the transformer substation, enhancing the safety and reliability of the transformer substation, optimizing the operation management of a power grid, promoting the development of an intelligent power system and the like.

The present invention discloses a liquid-based triple-polarization reconfigurable array antenna, which is characterized in that the antenna comprises a dielectric substrate, a radiation unit, a ground plane, a plastic pipe, a microfluidic pump, a DC power supply, and a two-way switch. The radiation unit is printed on the front surface of the dielectric substrate, and the back surface of the dielectric substrate is completely covered by the ground plane. The antenna uses a two-way switch and a microfluidic pump to control the state of the liquid in the plastic pipe within the semi-circular notch of the radiation units arranged in an array. By changing the state of the liquid, the surface current of the antenna is changed, generating two degenerate modes, TM01 and TM10. Through a two-way switch and a microfluidic pump, three polarization modes, namely left-handed circular polarization, right-handed circular polarization, and linear polarization, can be flexibly switched. The antenna has a simple structure, a small volume, a low cost, a high control efficiency, and is convenient for production and application.

The invention provides a software defined protocol controller based on CGRA and a multi-protocol exchange chip. The software defined protocol controller comprises a coarse particle reconfigurable array CGRA module, an embedded field programmable gate array module eFPGA and an application specific integrated circuit module ASIC. The coarse grain reconfigurable array CGRA module consists of a coarse grain reconfigurable network processing unit PE and is used for realizing partial control logic in a protocol layer in the software defined protocol controller; the embedded field programmable gate array module eFPGA is used for realizing partial control logic in a data link layer in the software defined protocol controller; and the ASIC is used for realizing a public part of a standard protocol and a user-defined protocol in the software defined protocol controller and public processing logic irrelevant to the protocol. According to the invention, unified processing of various heterogeneous protocols is realized, redundant logic in the protocol controller is reduced, and maximum utilization of hardware resources is realized.

The invention provides a reconfigurable array debugger, a debugging method, equipment and a medium. The reconfigurable array debugger comprises a serial port module and a debugging module which are in communication connection, the serial port module is also in communication connection with an external upper computer; the debugging module is also in communication connection with the debugged reconfigurable chip; the serial port module is used for forwarding a command and data sent by an upper computer to the debugging module by adopting a serial port frame format; the debugging module is used for debugging the reconfigurable chip according to the command and the data; according to the invention, the serial port interface is faster in transmission, simple in design and easier to realize in chip design.