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1. 发明申请

US20230052062A1 REFLECTIVE SURFACE ANTENNA BASED ON TRIPLE TELESCOPIC ROD DRIVE AND QUASI-GEODESIC GRID STRUCTURE 有权
公开(公告)号：US20230052062A1
公开(公告)日：2023-02-16
申请号：US17788587
申请日：2021-06-09
申请人： XIDIAN UNIVERSITY
发明人： Fei ZHENG , Lide YAN , Mei CHEN , Xi RUI
IPC分类号： H01Q1/12 , H01Q15/16 , H01Q19/18 , H01Q1/10
摘要： This invention proposes a reflective surface antenna based on a triple telescopic rod drive and quasi-geodesic grid structure, including a supportive back frame, a reflective surface frame, a vertical connecting rod, a primary reflective surface, an auxiliary reflective surface, a radial support rod, a feed source, and an attitude control device. The supportive back frame and reflective surface frame have a paraboloidal truss structure. The primary reflective surface is fixed on the quasi-geodesic grid of the reflective surface; the auxiliary reflective surface is fixed at the focal point of the primary reflective surface; the feed source is fixed at the apex of the reflective surface; and the attitude control device includes a base and a telescopic rod.

2. 发明授权

US11557682B1 Low turn-on voltage GaN diodes having anode metal with consistent crystal orientation and preparation method thereof 有权
公开(公告)号：US11557682B1
公开(公告)日：2023-01-17
申请号：US17579585
申请日：2022-01-19
申请人： XIDIAN UNIVERSITY
发明人： Jing Ning , Chi Zhang , Jincheng Zhang , Boyu Wang , Dong Wang , Peijun Ma , Yue Hao
IPC分类号： H01L29/872 , H01L29/20 , H01L29/205 , H01L29/47 , H01L21/02 , H01L21/285 , H01L21/306 , H01L21/3213 , H01L29/66
摘要： A low turn-on voltage GaN diode having an anode metal with a consistent crystal orientation and a preparation method thereof. The low turn-on voltage GaN diode having an anode metal with a consistent crystal orientation provided by the present disclosure includes a substrate layer, a GaN buffer layer, a GaN channel layer and an AlGaN barrier layer, which are arranged in sequence from bottom to top; a cathode arranged on the AlGaN barrier layer; a groove arranged in the GaN channel layer and the AlGaN barrier layer, and an anode provided on a bottom and a side wall of the groove and part of the AlGaN barrier layer; a dielectric layer provided on an uncovered portion of the AlGaN barrier layer; wherein, a contact portion of the anode with the groove and the AlGaN barrier layer is W or Mo metal with a crystal orientation of .

3. 发明授权

US11538930B2 Bidirectional blocking monolithic heterogeneous integrated cascode-structure field effect transistor, and manufacturing method thereof 有权
公开(公告)号：US11538930B2
公开(公告)日：2022-12-27
申请号：US17201234
申请日：2021-03-15
申请人： Xidian University
发明人： Chunfu Zhang , Weihang Zhang , Jiaqi Zhang , Guofang Yang , Yichang Wu , Dazheng Chen , Jincheng Zhang , Yue Hao
IPC分类号： H01L29/778 , H01L27/06 , H01L27/088 , H01L29/66
摘要： A bidirectional blocking monolithic heterogeneous integrated Cascode-structure field effect transistor, which mainly solves a problem that the existing monolithic heterogeneous integrated Cascode-structure field effect transistor has no reverse blocking characteristic. The field effect transistor includes a substrate, a GaN buffer layer, an AlGaN barrier layer and a SiN isolation layer, wherein an isolation groove is etched in the middle of the SiN isolation layer, a Si active layer is printed on the SiN isolation layer on one side of the isolation groove so as to prepare a Si metal oxide semiconductor field effect transistor, and a GaN high-electron-mobility transistor is prepared on the other side of the isolation groove, and a drain electrode of the GaN high-electron-mobility transistor is in Schottky contact with the AlGaN barrier layer to form a bidirectional blocking monolithic heterogeneous integrated Cascode-structure field effect transistor.

4. 发明申请

US20210409981A1 ADAPTIVE NETWORK DATA COLLECTION AND COMPOSITION 有权
公开(公告)号：US20210409981A1
公开(公告)日：2021-12-30
申请号：US16614187
申请日：2017-05-18
申请人： XIDIAN UNIVERSITY
发明人： Zheng Yan , Huaqing Lin , Yulong Fu
IPC分类号： H04W24/08 , H04L12/26 , H04L29/06 , H04W12/122
摘要： A method for adaptive data collection is proposed. The method may comprise detecting a network context for a communication node, and collecting network data for the communication node based at least in part on policy information associated with the network context. The policy information may describe a collection policy for the network data. According to an exemplary embodiment, the method may further comprise transmitting at least part of the collected network data and a tag derived from the policy information to a server for data composition.

5. 发明授权

US11195254B2 Interframe registration and adaptive step size-based non-uniformity correction method for infrared image 有权
公开(公告)号：US11195254B2
公开(公告)日：2021-12-07
申请号：US16980794
申请日：2018-03-28
申请人： XIDIAN UNIVERSITY
发明人： Huixin Zhou , Dong Zhao , Runda Qian , Lixin Guo , Xiuping Jia , Jun Zhou , Maosen Huang , Hanlin Qin , Bo Yao , Yue Yu , Huan Li , Jiangluqi Song , Bingjian Wang , Kuanhong Cheng , Juan Du , Shangzhen Song
IPC分类号： G06T3/00 , G06T7/38 , G06T5/50 , G06T7/00
摘要： An interframe registration and adaptive step size-based non-uniformity correction method for an infrared image, comprising: first calculating a normalized cross-power spectrum of n-th and (n−1)-th original infrared images with the non-uniformity, and then calculating a horizontal relative displacement and a vertical relative displacement of the n-th and (n−1)-th original infrared images with the non-uniformity; calculating a space variance and a time variance of each pixel of the n-th original infrared image with the non-uniformity, using the obtained space variance and time variance to calculate an adaptive iterative step size of each pixel of the n-th original infrared image with the non-uniformity, and using the iterative step size to update a gain correction coefficient and a bias correction coefficient; finally, performing non-uniformity correction on the pixel in an overlapping area of the n-th and (n−1)-th original infrared images with the non-uniformity.

6. 发明授权

US11146776B2 Device and method for three-dimensional laser imaging with longitudinal range 有权
公开(公告)号：US11146776B2
公开(公告)日：2021-10-12
申请号：US16990080
申请日：2020-08-11
申请人： Xidian University
发明人： Shiyu Wang , Defang Cai , Mengyao Wu , Zhen Guo
IPC分类号： H04N13/254 , H04N13/296 , G01S17/894 , G01S17/42 , H04N5/235
摘要： The present invention relates to a device and method for 3D laser imaging with a longitudinal range. An optical sensor array detects a 3D image of a target through a delay difference of laser transmission between pixels. During detection, two or more identical laser pulses are sequentially emitted to the target. Each time when a pulse is emitted, a gray image of the target is formed, and multiple pulses form multiple images. By controlling a shutter, the laser pulse returned in each imaging is truncated to varying degrees, and several charge coupled device (CCD) images with different exposures are obtained. A time-varying gray curve of each pixel is extracted, and a waveform of the corresponding laser pulse is restored. A position of a pulse peak of each pixel on a time coordinate is determined to obtain the distribution of the laser delay difference between the pixels, thereby realizing 3D imaging.

7. 发明授权

US11066088B2 Detection and positioning method for train water injection port 有权
公开(公告)号：US11066088B2
公开(公告)日：2021-07-20
申请号：US17270873
申请日：2018-12-13
申请人： XIDIAN UNIVERSITY
发明人： Huixin Zhou , Pei Xiang , Baokai Deng , Yue Yu , Lixin Guo , Dong Zhao , Hanlin Qin , Bingjian Wang , Jiangluqi Song , Huan Li , Bo Yao , Rui Lai , Xiuping Jia , Jun Zhou
IPC分类号： B61L15/00 , B61L27/00 , G06T7/136 , G06T7/11 , G06T7/73 , G06K9/62 , B61K11/00 , B61C17/02 , H04N5/235
摘要： A detection and positioning method for a train water injection port includes: acquiring train water injection port video images, and performing threshold segmentation on the train water injection port video images to obtain binarized train water injection port video images; processing the binarized train water injection port video images and matching the processed binarized train water injection port video images with a train water injection port template image; detecting a position of the water injection port in the train water injection port video image and comparing the position with a pre-set position range where the water injection port is located; and if the position and the pre-set position range have been matched, then transmitting a matching valid signal to a mechanical device control module to control a mechanical device to move or stop and start or stop water injection.

8. 发明授权

US10708006B2 Communication device, and communication method for frame aggregation and transmission 有权
公开(公告)号：US10708006B2
公开(公告)日：2020-07-07
申请号：US15776874
申请日：2016-07-14
申请人： XIDIAN UNIVERSITY
发明人： Mingwu Yao , Jilong Liu , Zhiliang Qiu
IPC分类号： H04L1/18 , H04L1/00 , H04L1/16 , H04L1/08 , H04L1/20
摘要： A method for transmitting an aggregated frame is disclosed. The method includes: estimating channel condition; comparing the channel condition with first threshold for selecting an aggregation scheme; and comparing the channel condition with second threshold, which is different with the first threshold, for selecting an aggregation scheme; performing the aggregation using the selected aggregation scheme with position information, which indicates the positions of sub-frame in the aggregated frame.

9. 发明申请

US20200143517A1 NON-UNIFORMITY CORRECTION METHOD FOR INFRARED IMAGE BASED ON GUIDED FILTERING AND HIGH-PASS FILTERING 审中-公开
公开(公告)号：US20200143517A1
公开(公告)日：2020-05-07
申请号：US16338703
申请日：2017-12-26
申请人： XIDIAN UNIVERSITY
发明人： Huixin Zhou , Dong Zhao , Runda Qian , Xiuping Jia , Jun Zhou , Hanlin Qin , Bo Yao , Yue Yu , Huan Li , Jiangluqi Song , Bingjian Wang , Yangqun Jin , Shenghui Rong , Kuanhong Cheng , Kun Qian
IPC分类号： G06T5/00 , G06T5/20
摘要： A non-uniformity correction method for an infrared image based on guided and high-pass filtering includes: assigning high-frequency component of first image frame of original image sequence to first fixed pattern noise f1; successively loading N-th image frame of the original image sequence with non-uniformity as current image frame, determining a difference between the current image frame and (N-1)-th image frame to obtain (N-1)-th differential image frame, and obtaining a relative change amplitude of each image element of (N-1)-th image frame according to the (N-1)-th differential image frame; and performing high-pass filtering based on a combination of a high-frequency component of the current image frame obtained through guided filtering and the relative change amplitude to obtain n-th fixed pattern noise fn, and performing non-uniformity correction on the current image frame according to fn to obtain a correction result of the current image frame, where N≥2, n≥2.

10. 发明授权

US08744824B2 Optimization design method for the chassis structure of an electronic device based on mechanical, electrical and thermal three-field coupling 有权
标题翻译：基于机械，电和热三场耦合的电子设备底盘结构的优化设计方法
公开(公告)号：US08744824B2
公开(公告)日：2014-06-03
申请号：US13259262
申请日：2009-09-24
申请人： Baoyan Duan , Hui Qiao , Peng Li , Shibo Jiang , Boyuan Ma , Ning Han , Lizhi Zeng , Yu He
发明人： Baoyan Duan , Hui Qiao , Peng Li , Shibo Jiang , Boyuan Ma , Ning Han , Lizhi Zeng , Yu He
IPC分类号： G06F17/50
CPC分类号： G06F17/5018 , G06F2217/16 , G06F2217/80
摘要： An optimizing design method for a chassis structure of electronic equipment is disclosed, including: investigating from the point of view of mechanical, electric and thermal three-field coupling, determining the preliminary design size of the chassis, performing a mechanical analysis by using a mechanical analysis software such as ANSYS; converting the mesh model among the three-fields, obtaining the mesh model used for the electromagnetic and thermal analyses; setting the thermal analysis parameters, performing the thermal analysis by using an electromagnetic analysis software such as ICEPAK; determining a resonance frequency of the chassis and an electric parameter of the absorbing material, performing an electromagnetic analysis by using a thermal analysis software such as FEKO; correcting the analysis result by sample testing; determining whether the chassis satisfies the design requirement, if it satisfies the requirement, the optimizing design will be finished, otherwise, modifying the preliminary computer assisted design model, the electromagnetic analysis parameter and the thermal analysis parameter, repeating the above processes until the requirement is satisfied.
摘要翻译：公开了一种用于电子设备底盘结构的优化设计方法，包括：从机械，电和热三场耦合的角度考察，确定底盘的初步设计尺寸，通过使用机械分析软件如ANSYS; 在三场中转换网格模型，获得用于电磁和热分析的网格模型; 设置热分析参数，使用ICEPAK等电磁分析软件进行热分析; 确定底盘的共振频率和吸收材料的电参数，通过使用诸如FEKO的热分析软件执行电磁分析; 通过样本测试纠正分析结果; 确定底盘是否满足设计要求，如果满足要求，优化设计将完成，否则，修改初步计算机辅助设计模型，电磁分析参数和热分析参数，重复上述过程，直到要求为满意。

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