公开(公告)号：US12131438B2

公开(公告)日：2024-10-29

申请号：US17668483

申请日：2022-02-10

Applicant: Anhui University ,  Anhui Zhongke Xinglian Information Technology Co., Ltd.

Inventor： Jie Chen ,  Huiyao Wan ,  Zhixiang Huang ,  Xiaoping Liu ,  Bocai Wu ,  Runfan Xia ,  Zheng Zhou ,  Jianming Lv ,  Yun Feng ,  Wentian Du ,  Jingqian Yu

IPC: G06T3/40 ,  G01S13/90 ,  G06V10/40 ,  G06V10/764 ,  G06V10/77 ,  G06V10/774 ,  G06V10/94

CPC classification number: G06T3/40 ,  G01S13/9021 ,  G06V10/40 ,  G06V10/764 ,  G06V10/7715 ,  G06V10/774 ,  G06V10/95 ,  G06V2201/07

Abstract: The present disclosure provides a synthetic aperture radar (SAR) image target detection method. The present disclosure takes the anchor-free target detection algorithm YOLOX as the basic framework, reconstructs the backbone feature extraction network from the lightweight perspective, and replaces the depthwise separable convolution in MobilenetV2 with one ordinary convolution and one depthwise separable convolution. The number of channels in the feature map is reduced by half through the ordinary convolution, features input from the ordinary convolution are further extracted by the depthwise separable convolution, and the convolutional results from the two convolutions are spliced. The present disclosure highlights the unique strong scattering characteristic of the SAR target through the attention enhancement pyramid attention network (CSEMPAN) by integrating channels and spatial attention mechanisms. In view of the multiple scales and strong sparseness of the SAR target, the present disclosure uses an ESPHead.

公开(公告)号：US11715888B1

公开(公告)日：2023-08-01

申请号：US17990628

申请日：2022-11-18

Applicant: Anhui University

Inventor： Zhixiang Huang ,  Junjie Han ,  Guangshang Cheng ,  Sixian Qian

IPC: H01Q21/06 ,  H01Q9/04

CPC classification number: H01Q21/065 ,  H01Q9/0414

Abstract: A reconfigurable intelligent metasurface with adjustable 3-bit dual-polarization phases may include a plurality of reconfigurable intelligent metasurface units with adjustable 3-bit dual-polarization phases. Each of the plurality of reconfigurable intelligent metasurface units may include: a first layer including four fan-shaped metal patches and four Y-shaped metal patches symmetrical about a center, a second layer being a feeding layer along the x-axis direction, a third layer being a feeding layer along the y-axis direction, and a fourth layer being a metal ground layer. By changing a voltage value at two ends of each of the varactors in an orthogonal polarization direction, the reconfigurable intelligent metasurface unit may be enabled to independently implement dual-polarization 3-bit phase modulation in two orthogonal polarization directions, thereby implementing decoupling in the orthogonal polarization directions.

公开(公告)号：US20230006368A1

公开(公告)日：2023-01-05

申请号：US17695471

申请日：2022-03-15

Applicant: Anhui University

Inventor： Lixia YANG ,  Dawei DING ,  Aidi Ren ,  Zhixiang Huang ,  Guanghui XU ,  Qian CHEN ,  Xianliang WU

IPC: H01Q25/00 ,  H01Q21/26 ,  H01Q1/24

Abstract: The present disclosure provides a 5th generation (5G) broadband dual-polarized base station antenna of a multimode resonance structure, including: a first resonance structure, a main radiating unit, a feed balun set, and a metal reflecting plate, where the feed balun set is disposed on the metal reflecting plate, the main radiating unit is disposed on a first feed balun and a second feed balun, and the first resonance structure is disposed on the main radiating unit; the main radiating unit includes a second resonance structure and a third resonance structure, the first resonance structure is configured to control a resonance point at a high frequency, and the third resonance structure is configured to control a resonance point at a low frequency; and the feed balun set is configured to provide a balance current for the main radiating unit and the first resonance structure.

公开(公告)号：US12283752B2

公开(公告)日：2025-04-22

申请号：US18145148

申请日：2022-12-22

Applicant: Anhui University

Inventor： Zhixiang Huang ,  Sixian Qian ,  Jie Wu ,  Kaikun Niu ,  Yi Li ,  Shuyang An ,  Xingang Ren ,  Lixia Yang ,  Xianliang Wu

IPC: H01Q21/20 ,  H01Q9/04

Abstract: The present disclosure belongs to the technical field of OAM antennas, and provides a frequency re-configurable OAM antenna in S band and a frequency reconfiguration method. The OAM antenna includes a lower dielectric substrate and multiple array units. Each array unit includes a metal patch, an upper dielectric substrate, an outer loop, an inner loop, a coaxial feeder, four metal probes, and four diodes. In the present disclosure, bias states of all the diodes of each array unit are controlled by applying a voltage; when all the diodes are in forward bias states, the antenna works at a high frequency; and when all the diodes are in reverse bias states, the antenna works at a low frequency. The frequency re-configurable OAM antenna in S band in the present disclosure has features of frequency reconfiguration and two OAM radiation modes, and has a stable gain over a broadband.

公开(公告)号：US11984905B2

公开(公告)日：2024-05-14

申请号：US17847409

申请日：2022-06-23

Applicant: Anhui University

Inventor： Zhixiang Huang ,  Xueshi Hou ,  Zongming Duan ,  Bowen Wu ,  Jiecheng Zhao

IPC: H03M1/10

CPC classification number: H03M1/1014

Abstract: The present disclosure relates to a high-speed and low-power successive approximation register analog-to-digital converter (SAR ADC) and an analog-to-digital conversion method. Binary redundancy reassembly is performed to improve a digital-to-analog converter (DAC) capacitor array included in the SAR ADC such that the total number of capacitors included in a capacitor sub-array of the DAC capacitor array is greater than the number of precision bits of the SAR ADC, and the total number of unit capacitors included in all capacitors when the total number of capacitors included in the capacitor sub-array is greater than the number of precision bits of the SAR ADC is equal to the total number of unit capacitors included in all capacitors when the total number of capacitors included in the capacitor sub-array is equal to the number of precision bits of the SAR ADC.

公开(公告)号：US11715879B1

公开(公告)日：2023-08-01

申请号：US18186815

申请日：2023-03-20

Applicant: Anhui University

Inventor： Yingsong Li ,  Zhixiang Huang ,  Jiahong Wang

IPC: H01Q11/08 ,  H01Q1/42 ,  H01Q9/27

CPC classification number: H01Q11/08 ,  H01Q1/422 ,  H01Q9/27

Abstract: Disclosed is a multi-layer low-profile four-arm spiral antenna, including a metal grounding plate, and a top surface of the metal grounding plate is fixedly connected with three layers of cylindrical dielectric substrates; the three layers of dielectric substrates are coaxially arranged, and the three layers of dielectric substrates are coaxially arranged with the metal grounding plate, and a gap is set between two adjacent layers of dielectric substrates; four spiral metal strips with a same rotation direction are respectively arranged on each layer of dielectric substrate, the four spiral metal strips on each layer of dielectric substrate form spiral radial arms, and a phase difference of the four spiral metal strips on each layer of dielectric substrate is 90°; the corresponding spiral metal strips on the two adjacent layers of dielectric substrates are connected by connecting bridges, the connecting bridges are arranged in the gap.

公开(公告)号：US20230184927A1

公开(公告)日：2023-06-15

申请号：US17662402

申请日：2022-05-06

Applicant: Anhui University

Inventor： Jie Chen ,  Runfan Xia ,  Zhixiang Huang ,  Huiyao Wan ,  Xiaoping Liu ,  Zihan Cheng ,  Bocai Wu ,  Baidong Yao ,  Zheng Zhou ,  Jianming Lv ,  Yun Feng ,  Wentian Du ,  Jingqian Yu

IPC: G01S13/90 ,  G06T7/73 ,  G06V10/82 ,  G06V10/40 ,  G06V10/77 ,  G06T3/40 ,  G06V10/25 ,  G06V10/80 ,  G06V10/22 ,  G06T7/60 ,  G06V10/766 ,  G06V10/764

CPC classification number: G01S13/9027 ,  G06T7/73 ,  G06V10/82 ,  G06V10/40 ,  G06V10/7715 ,  G06T3/4046 ,  G06V10/25 ,  G06V10/806 ,  G06V10/225 ,  G06T7/60 ,  G06V10/766 ,  G06V10/764 ,  G06V2201/07 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/10044

Abstract: A contextual visual-based synthetic-aperture radar (SAR) target detection method and apparatus, and a storage medium, belonging to the field of target detection is described. The method includes: obtaining an SAR image; and inputting the SAR image into a target detection model, and positioning and recognizing a target in the SAR image by using the target detection model, to obtain a detection result. In the present disclosure, a two-way multi-scale connection operation is enhanced through top-down and bottom-up attention, to guide learning of dynamic attention matrices and enhance feature interaction under different resolutions. The model can extract the multi-scale target feature information with higher accuracy, for bounding box regression and classification, to suppress interfering background information, thereby enhancing the visual expressiveness. After the attention enhancement module is added, the detection performance can be greatly improved with almost no increase in the parameter amount and calculation amount of the whole neck.

公开(公告)号：US12095135B2

公开(公告)日：2024-09-17

申请号：US18539132

申请日：2023-12-13

Applicant: Anhui University

Inventor： Xingang Ren ,  Shengyang Wei ,  Yali Zhao ,  Guoxing Sun ,  Jiayu Rao ,  Gang Wang ,  Kaikun Niu ,  Xianliang Wu ,  Zhixiang Huang ,  Yingsong Li ,  Yong Peng

IPC: H01P7/00 ,  H05K1/02

CPC classification number: H01P7/00 ,  H05K1/0236

Abstract: An ultra-wideband electromagnetic band gap (EBG) structure includes multiple EBG units in an array. Each EBG unit includes a power plane, a dielectric substrate and a ground plane from top to bottom. The power plane includes a patch, a coupled complementary split ring resonator (C-CSRR) and a plurality of semi-improved Z-bridge structures. Each edge of the patch is provided with a semi-improved Z-bridge structure. The C-CSRR is provided within a ring formed by the semi-improved Z-bridge structures. The Z-bridge structure includes a first horizontal branch, a first vertical branch, a second horizontal branch and a second vertical branch connected in sequence. The second vertical branch is connected to the patch. First horizontal branches of adjacent EBG units are connected to each other. A circuit board including the aforementioned EBG structure is also provided.

公开(公告)号：US11901617B1

公开(公告)日：2024-02-13

申请号：US18463128

申请日：2023-09-07

Applicant: Anhui University

Inventor： Yingsong Li ,  Zhixiang Huang

IPC: H01Q1/24 ,  H01Q1/36

CPC classification number: H01Q1/36 ,  H01Q1/241

Abstract: Provided is a miniaturized ultra-low frequency antenna, including upper layer positive and negative electrodes, middle layer positive and negative electrodes and lower layer positive and negative electrodes, and a polyvinylidene fluoride column. The polyvinylidene fluoride column is respectively connected with the upper layer positive and negative electrodes, the middle layer positive and negative electrodes and the lower layer positive and negative electrodes. The polyvinylidene fluoride column is coated with stress electromagnetic conversion material layers. The upper layer positive and negative electrodes, the middle layer positive and negative electrodes and the lower layer positive and negative electrodes drive the polyvinylidene fluoride column to generate a deflection force through a voltage, and the stress electromagnetic conversion material layers are prompted to radiate electromagnetic waves and radiate under an action of the deflection force.

公开(公告)号：US11876299B2

公开(公告)日：2024-01-16

申请号：US17695471

申请日：2022-03-15

Applicant: Anhui University

Inventor： Lixia Yang ,  Dawei Ding ,  Aidi Ren ,  Zhixiang Huang ,  Guanghui Xu ,  Qian Chen ,  Xianliang Wu

IPC: H01Q25/00 ,  H01Q21/26 ,  H01Q1/24

CPC classification number: H01Q25/001 ,  H01Q1/24 ,  H01Q1/246 ,  H01Q21/26 ,  H01Q25/00

Abstract: The present disclosure provides a 5th generation (5G) broadband dual-polarized base station antenna of a multimode resonance structure, including: a first resonance structure, a main radiating unit, a feed balun set, and a metal reflecting plate, where the feed balun set is disposed on the metal reflecting plate, the main radiating unit is disposed on a first feed balun and a second feed balun, and the first resonance structure is disposed on the main radiating unit; the main radiating unit includes a second resonance structure and a third resonance structure, the first resonance structure is configured to control a resonance point at a high frequency, and the third resonance structure is configured to control a resonance point at a low frequency; and the feed balun set is configured to provide a balance current for the main radiating unit and the first resonance structure.