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适于UHF RFID标签芯片的高性能电源恢复电路

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微电子学 2012年第2期42卷 159-163页

作者：冯筱文光俊陈健王耀刘佳欣电子科技大学射频集成电路实验室成都611731

针对ISO 18000-6C标准,提出一种双电压输出稳压电路,有效降低了整体芯片功耗。基于Cadence Spectre设计仿真平台和TSMC 0.18μm CMOS混合信号工艺进行设计并流片。在-20℃～80℃温度范围内,工艺角从ff到ss变化,仿真得到整流电路的能量... 详细信息

针对ISO 18000-6C标准,提出一种双电压输出稳压电路,有效降低了整体芯片功耗。基于Cadence Spectre设计仿真平台和TSMC 0.18μm CMOS混合信号工艺进行设计并流片。在-20℃～80℃温度范围内,工艺角从ff到ss变化,仿真得到整流电路的能量转换效率(PCE)为29.88%,稳压电路的温度系数为2.4×10-5/℃,电源噪声抑制比(PSRR)为91.4dB@10Hz和34.5dB@10MHz。同时对芯片进行测试,标签可以工作的最低输入射频功率为-9.5dBm,此时整流效率可达23.1%,稳压高低两路电压输出分别稳定在1.8±0.1V和1.0±0.05V,芯片面积约为0.166mm2。

关键词：电源恢复电路 UHF RFID 标签整流效率

Research on combustion characteristics of scramjet combustor with different flight dynamic pressure conditions

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Propulsion and Power Research 2023年第1期12卷 69-82页

作者： Junlong Zhang guangjun Feng Haotian Bai Kangshuai Lv wen Bao Harbin Institute of Technology Heilongjiang 150001China

Combustion characteristics in a scramjet combustor equipped with a thin strut were observed and discussed in this paper.A series of numerical simulations were carried out under different flight dynamic pressure *** parameters of cold flow field and combustion field were used to analyze the combustion *** on the basic data,the mixing efficiency,characteristics of flame establishment and propagation as well as combustion field characteristics were discussed in this *** influence laws of lower dynamic pressure conditions were further revealed to optimize combustor *** indicated that properly reducing the flight dynamic pressure can enhance the mixing of *** diffusion of kerosene determined the distribution of combustion zone and heat ***,the influencing factor that affected the chemical reaction rate was revealed to shorten chemical reaction *** the higher flight Mach number made the flame propagation velocity faster and the combustion stability *** fuel mixing became the main factor and low dynamic pressure had little effect on laminar flame propagation velocity under high Mach number *** investigations in this paper are helpful for understanding the combustion characteristics under low dynamic pressure conditions.

关键词： Low flight dynamic pressure Fuel mixing characteristics Flame propagation characteristics Combustion characteristics

An Early Warning Model of Telecommunication Network Fraud Based on User Portrait

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计算机、材料和连续体（英文） 2023年第4期75卷 1561-1576页

作者： wen Deng guangjun Liang Chenfei Yu Kefan Yao Chengrui Wang Xuan Zhang Department of Computer Information and Cyber Security Jiangsu Police InstituteNanjingChina Engineering Research Center of Electronic Data Forensics Analysis NanjingChina Department of Public Security of Jiangsu Province Key Laboratory of Digital ForensicsNanjingChina

With the frequent occurrence of telecommunications and networkfraud crimes in recent years, new frauds have emerged one after another whichhas caused huge losses to the people. However, due to the lack of an effectivepreventive mechanism, the police are often in a passive position. Usingtechnologies such as web crawlers, feature engineering, deep learning, andartificial intelligence, this paper proposes a user portrait fraudwarning schemebased on Weibo public data. First, we perform preliminary screening andcleaning based on the keyword “defrauded” to obtain valid fraudulent userIdentity Documents (IDs). The basic information and account information ofthese users is user-labeled to achieve the purpose of distinguishing the typesof fraud. Secondly, through feature engineering technologies such as avatarrecognition, Artificial Intelligence (AI) sentiment analysis, data screening,and follower blogger type analysis, these pictures and texts will be abstractedinto user preferences and personality characteristics which integrate multidimensionalinformation to build user portraits. Third, deep neural networktraining is performed on the cube. 80% percent of the data is predicted basedon the N-way K-shot problem and used to train the model, and the remaining20% is used for model accuracy evaluation. Experiments have shown thatFew-short learning has higher accuracy compared with Long Short TermMemory (LSTM), Recurrent Neural Networks (RNN) and ConvolutionalNeural Network (CNN). On this basis, this paper develops a WeChat smallprogram for early warning of telecommunications network fraud based onuser portraits. When the user enters some personal information on the frontend, the back-end database can perform correlation analysis by itself, so as tomatch the most likely fraud types and give relevant early warning *** fraud warning model is highly scaleable. The data of other Applications(APPs) can be extended to further improve the efficiency of anti-fraud whichhas e

关键词： Crawler user portrait feature engineering deep learning small program development

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基于腔光力系统的新型高精度微陀螺仪

中国科学:物理学、力学、天文学 2023年第11期53卷 133-144页

作者：闫兴黄文逸李喆陈凯邓光伟文光俊黄勇军电子科技大学信息与通信工程学院成都611731 电子科技大学自动化工程学院成都611731 电子科技大学基础与前沿研究院成都610054

微陀螺仪是一种基于科里奥利原理或萨格拉克效应以测量角速度幅度及频率变化的惯性微传感器件,其在航空航天、无人设备、制导弹药等领域具有异常广泛的应用需求.基于微机电系统的传统微陀螺仪因噪声较大难以进一步获得性能上的较大突破... 详细信息

微陀螺仪是一种基于科里奥利原理或萨格拉克效应以测量角速度幅度及频率变化的惯性微传感器件,其在航空航天、无人设备、制导弹药等领域具有异常广泛的应用需求.基于微机电系统的传统微陀螺仪因噪声较大难以进一步获得性能上的较大突破.本文提出一种基于腔光力检测架构的新型微光机电系统高精度微陀螺仪结构,能在低功耗下实现超高精度角速度测量.基于光机械耦合理论,详细分析了该新型高精度微陀螺仪的工作机理和实现原理,并通过仿真验证及优化,得出其理论角速度测量灵敏度为122.2 mV/(°/s),角度随机游走为0.95°/h1/2,在相同量级惯性质量大小情况下,该新型微陀螺仪的精度明显优于传统微机电系统陀螺仪性能.

关键词：微陀螺仪腔光力系统高精度角速度测量

一种小型化便携式UHF RFID读写器的实现

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微型机与应用 2011年第8期30卷 18-20,22页

作者：卓建亮文光俊李建电子科技大学通信与信息工程学院射频集成电路研究室四川成都611731

设计实现了一款小型化便携式UHF RFID读写器。采用Impinj公司的射频收发芯片R1000作为核心芯片,并结合电源管理模块、ARM7及其外围电路的设计,实现工作频率为860MHz～960MHz软件可调,可兼容EPC global Gen2和ISO18000-6C两种标准。在8dB... 详细信息

设计实现了一款小型化便携式UHF RFID读写器。采用Impinj公司的射频收发芯片R1000作为核心芯片,并结合电源管理模块、ARM7及其外围电路的设计,实现工作频率为860MHz～960MHz软件可调,可兼容EPC global Gen2和ISO18000-6C两种标准。在8dBi天线下,该读写器实现3m以上的读写距离,并且可多标签读写。

关键词： UHF RFID 读写器 R1000 ARM7 便携式

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脊加载同轴径向线慢波结构设计

太赫兹科学与电子信息学报 2015年第1期13卷 86-89 105,105页

作者：王兵文光俊王文祥电子科技大学通信与信息工程学院四川成都610054 电子科技大学物理电子学院四川成都610054

提出脊加载同轴径向线慢波结构,并用高频结构仿真器(HFSS)电磁仿真软件对其色散特性和耦合阻抗进行研究,分析了不同结构参数变化对其高频特性的影响。结果表明:脊加载同轴径向线慢波结构的色散曲线平坦,减小内径和周期长度可以明显降低... 详细信息

提出脊加载同轴径向线慢波结构,并用高频结构仿真器(HFSS)电磁仿真软件对其色散特性和耦合阻抗进行研究,分析了不同结构参数变化对其高频特性的影响。结果表明:脊加载同轴径向线慢波结构的色散曲线平坦,减小内径和周期长度可以明显降低慢波结构的相速,从而减小工作电压;加载脊的宽度对耦合阻抗的影响明显,随着加载脊宽度的增加,耦合阻抗得到提高,相速减小;加载脊的长度对结构的色散特性和耦合阻抗影响不明显;这种脊加载方式有利于增加慢波结构的耦合阻抗,提高行波管的增益和效率。脊加载同轴径向线慢波结构是一种全金属结构,工作频带宽,散热性能好,在毫米波波段的行波管中有较好的应用前景。

关键词：慢波结构同轴径向线色散特性耦合阻抗行波管

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MMIC毫米波倍频器的研究

电子工程师 2007年第4期33卷 10-13页

作者：吴晓燕庞宏文光俊电子科技大学通信与信息工程学院射频集成电路研究室四川省成都市610054

在介绍倍频器工作原理、各种实现方法及其优缺点的基础上,阐明了采用MMIC(单片微波集成电路)工艺实现高性能、高可靠性、小型化毫米波倍频器芯片的技术特点及应用需求,比较了单管和平衡两种不同结构MMIC毫米波倍频器的优点与不足,全面... 详细信息

在介绍倍频器工作原理、各种实现方法及其优缺点的基础上,阐明了采用MMIC(单片微波集成电路)工艺实现高性能、高可靠性、小型化毫米波倍频器芯片的技术特点及应用需求,比较了单管和平衡两种不同结构MMIC毫米波倍频器的优点与不足,全面综述了国内外对MMIC毫米波倍频器的研究情况,介绍了MMIC毫米波倍频器的最新研究进展,展望了MMIC毫米波倍频器的发展趋势,提出了一些建议。

关键词：单片微波集成电路(MMIC) 毫米波倍频器毫米波倍频器

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利用正折射率传输线微波介质板进行成像

电子测量与仪器学报 2009年第9期23卷 57-62页

作者：徐新河文光俊甘月红谢康电子科技大学通信与信息工程学院成都610054 南昌航空大学南昌330063 成都电子科技大学宽带光纤传输与通信网技术教育部重点实验室成都610054

分析了平面电压波与一个夹在负折射率传输线媒质里的无损耗正折射率传输线媒质板的相互作用,在完全匹配的条件下,导出了这个介质板内外的电压分布。分析显示这个正折射率介质板也具有放大倏逝波的能力,结果提高了像的分辨率。为了展现... 详细信息

分析了平面电压波与一个夹在负折射率传输线媒质里的无损耗正折射率传输线媒质板的相互作用,在完全匹配的条件下,导出了这个介质板内外的电压分布。分析显示这个正折射率介质板也具有放大倏逝波的能力,结果提高了像的分辨率。为了展现这个正折射率介质板的完美成像功能,由单个y方向的电流源所产生的电压解是被利用计算所有区域的电压幅度。数值仿真结果表明在源的电压波,包括传输波和倏逝波,能够在像点精确地重构,从而取得了完美成像。

关键词：微波电路传输线负折射率完美成像

Pore-Fracture Distribution Heterogeneity of Shale Reservoirs Determined by using HPMI and LPN_(2 )GA Tests

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1659-1672页

作者： ZHANG Junjian QIN Zhengyuan HAN Yanning WANG Huaimeng HOU Maoguo YAN Gaoyuan FENG guangjun ZHANG Xiaoyang YIN Tingting ZHANG Hainan wen Shupeng College of Earth Sciences&Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China School of Resources and Earth Science China University of Mining and TechnologyXuzhouJiangsu 221116China Nottingham Geospatial Institute Faculty of EngineeringUniversity of NottinghamNottinghamNG72TUUK The First Exploration Team of Shandong Province Coal Geology Bureau ShandongQingdaoShandong 266000 General Institute of Chemical Geology Survey of CCGMB Beijing 100013China School of Geosciences China’s University of Petroleum(East China)QingdaoShandong 266580China 113 Team of Guizhou Coal Geology Bureau Guiyang 550000China

The compressibility of shale matrix reflects the effects of reservoir lithology, material composition, pore structure and tectonic deformation. It is important to understand the factors that influence shale matrix compressibility(SMC) and their effects on pore size distribution(PSD) heterogeneity in order to evaluate the properties of unconventional *** this study, the volumes of pores whose diameters were in the range 6–100 nm were corrected for SMC for 17 shale samples from basins in China using high-pressure mercury intrusion and low-temperature nitrogen gas adsorption analyses,in order to investigate the factors influencing the SMC values. In addition, the variations in fractal dimensions before and after pore volume correction were determined, using single and multifractal models to explain the effects of SMC on PSD heterogeneity. In this process, the applicability of each fractal model for characterizing PSD heterogeneity was determined using statistical analyses. The Menger and Sierpinski single fractal models, the thermodynamic fractal model and a multifractal model were all used in this study. The results showed the following. The matrix compression restricts the segmentation of the fractal dimension curves for the single fractal Menger and Sierpinski models, which leads to a uniformity of PSD heterogeneity for different pore diameters. However, matrix compression has only a weak influence on the results calculated using a thermodynamic model. The SMC clearly affects the multifractal value variations, showing that the fractal dimension values of shale samples under matrix compression are small. Overall PSD heterogeneity becomes small for pores with diameters below 100 nm and the SMC primarily affects the PSD heterogeneity of higher pore volume areas. The comparison of fractal curves before and after correction and the variance analysis indicate that the thermodynamic model is applicable to quantitatively characterize PSD heterogeneity of shale col

关键词： shale reservoirs matrix compressibility pore structure fractal dimension multifractal