CN-122026973-A - Phased array antenna system capable of generating spatially localized super-focused microwaves

CN122026973ACN 122026973 ACN122026973 ACN 122026973ACN-122026973-A

Abstract

The invention belongs to the technical field of phased array antenna systems, and particularly relates to a phased array antenna system capable of generating spatially localized super-focused microwaves, which comprises a detection unit, a control unit and a phased array antenna array, wherein the detection unit is connected with the control unit through a data transmission link, the control unit is connected with the phased array antenna array through a control cable, the detection unit is used for scanning a spatial environment, identifying a target object and acquiring target position information and transmitting the target position information to the control unit in real time, a nonlinear phase and intensity modulation algorithm based on a propagation distance is arranged in the control unit and used for receiving the target position information and executing the algorithm, and excitation parameters of each array element of a phased array are calculated, and the excitation parameters comprise intensity weight and time delay values.

Inventors

ZHANG BO
CHANG JUN
CHEN BIN

Assignees

飞鸟低空科技(江苏)有限公司

Dates

Publication Date: 20260512
Application Date: 20260116

Claims (10)

1. A phased array antenna system capable of generating spatially localized super-focused microwaves is characterized by comprising a detection unit, a control unit and a phased array antenna array; the detection unit is connected with the control unit through a data transmission link, and the control unit is connected with the phased array antenna array through a control cable; the detection unit is used for scanning the space environment, identifying a target object, acquiring target position information and transmitting the target position information to the control unit in real time; the control unit is internally provided with a nonlinear phase and intensity modulation algorithm based on a propagation distance, and is used for receiving target position information and executing the algorithm to calculate excitation parameters of each array element of the phased array, wherein the excitation parameters comprise intensity weights and time delay values; The phased array antenna array is composed of a plurality of antenna array elements and is used for loading the excitation parameters and synchronously transmitting microwaves to synthesize customized microwave beams, wherein the customized microwave beams keep low intensity on a propagation path, focus on a focus of a sub-wavelength scale at a target point, and the intensity is suddenly increased compared with the intensity on the propagation path.
2. The phased array antenna system capable of generating spatially localized super focused microwaves as set forth in claim 1 wherein said detection unit is a lidar or millimeter wave radar comprising a transmitter for scanning a spatial environment, a receiver for capturing reflected signals from a target, and a signal processor for calculating and outputting three-dimensional coordinates, distance, speed, and size information of the target.
3. A phased array antenna system capable of generating spatially localized super-focused microwaves as described in claim 1 wherein said control unit comprises a microprocessor, a memory and an algorithm module, said memory pre-storing said propagation distance based nonlinear phase and intensity modulation algorithm, said microprocessor for receiving data from the detection unit and invoking the algorithm module to execute said algorithm.
4. The phased array antenna system for generating spatially localized hyper-focused microwaves according to claim 1, wherein the array elements of said phased array antenna array are arranged in a grid pattern having a spacing between 1/2 and 1 times the wavelength of the microwaves.
5. A phased array antenna system for producing spatially localized hyper-focused microwaves according to claim 1, wherein the phased array antenna is configured in a generally planar or curved configuration.
6. A phased array antenna system for generating spatially localized super-focused microwaves as described in claim 1 wherein said data transmission link between said probe unit and control unit is a high speed data bus, said high speed data bus being a PCIe bus.
7. A phased array antenna system for generating spatially localized super-focused microwaves as claimed in claim 1, wherein said system workflow is refreshed every 1ms for dynamically tracking focused moving targets.
8. A phased array antenna system for producing spatially localized super-focused microwaves as claimed in claim 1, wherein the intensity of said custom microwave beam at the target point is increased by two orders of magnitude compared to the intensity on the propagation path.
9. The phased array antenna system for producing spatially localized super focused microwaves as defined in claim 1 wherein each of said antenna elements is coupled to an adjustable attenuator and a delay for independently controlling the intensity and phase of the microwaves.
10. A phased array antenna system for producing spatially localized super-focused microwaves as described in claim 1, wherein said customized microwave beam initially propagates in a plurality of lobe-like structures, said lobe-like structures comprising main lobes and side lobes.

Description

Phased array antenna system capable of generating spatially localized super-focused microwaves Technical Field The invention belongs to the technical field of phased array antenna systems, and particularly relates to a phased array antenna system capable of generating spatially localized super-focused microwaves. Background In microwave focusing application, the conventional phased array antenna system generally has the problems of limited focusing precision and low energy utilization rate. In the prior art, a linear phase regulation mode is mostly adopted, a beam focusing area is difficult to break through wavelength scale limitation, main lobe energy is dispersed, sidelobe loss is remarkable in a propagation process, so that the focusing strength of a target point is insufficient, and the scene requirement on strict space locality requirement cannot be met. Meanwhile, the beam parameters of most systems are fixed, and are difficult to dynamically adjust according to the distance and position change of the target, so that the focusing effect is easily influenced by the propagation path, and the moving target is difficult to accurately lock. With the rapid development of the fields of precise detection, directional energy transmission and the like, higher requirements are put forward on the spatial localized focusing capability, dynamic tracking performance and path safety of a microwave system. The prior art lacks a nonlinear regulation and control mechanism based on propagation distance, so that the beam has more uniform energy distribution and larger intensity on a transmission path, has large transmission loss and can possibly cause interference to a along-road environment or equipment, and the dynamic response speed is slower, so that the target movement or environment change cannot be adapted in real time, and the application expansion of the phased array antenna system under the high-precision and high-dynamic scene is limited. Disclosure of Invention The invention aims to solve the technical problems and provide a phased array antenna system capable of generating spatially localized super-focused microwaves. In view of the above, the present invention provides a phased array antenna system capable of generating spatially localized super-focused microwaves, comprising a detection unit, a control unit, and a phased array antenna array; the detection unit is connected with the control unit through a data transmission link, and the control unit is connected with the phased array antenna array through a control cable; the detection unit is used for scanning the space environment, identifying a target object, acquiring target position information and transmitting the target position information to the control unit in real time; The control unit is internally provided with a nonlinear phase and intensity modulation algorithm based on a propagation distance, and is used for receiving target position information and executing the algorithm, a data table is obtained according to early scanning, corresponding distance and initial surface parameters, the distance measurement only can look up a table (call data), then if the target is not on an axis, an inclined phase (linear time delay) can be automatically added, and the excitation parameters comprise intensity weight and time delay values; The phased array antenna array is composed of a plurality of antenna array elements and is used for loading the excitation parameters and synchronously transmitting microwaves to synthesize customized microwave beams, wherein the customized microwave beams keep low intensity on a propagation path, focus on a focus of a sub-wavelength scale at a target point, and the intensity is suddenly increased compared with the intensity on the propagation path. Preferably, the detection unit is a laser radar or millimeter wave radar and comprises a transmitter, a receiver and a signal processor, wherein the transmitter is used for scanning a space environment, the receiver is used for capturing a reflected signal of a target object, and the signal processor is used for calculating and outputting three-dimensional coordinate, distance, speed and size information of the target object. Preferably, the control unit comprises a microprocessor, a memory and an algorithm module, wherein the memory is used for pre-storing the nonlinear phase and intensity modulation algorithm based on the propagation distance, and the microprocessor is used for receiving the data of the detection unit and calling the algorithm module to execute the algorithm. Preferably, array elements of the phased array antenna array are arranged in a grid shape, and the distance between the array elements is 1/2 to 1 time of the microwave wavelength. Preferably, the phased array antenna array is configured as a planar or curved layout as a whole. Preferably, the data transmission link between the probe unit and the control unit is a high-speed data bus, and the high-speed d