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An electromagnetic simulation assisted small signal modeling method for InP double-heterojunction bipolar transistors

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chinese Physics B 2022年第6期31卷 717-724页

作者： Yanzhe Wang Wuchang ding Yongbo Su Feng Yang Jianjun ding Fugui Zhou {2. jin School of Microelectronics University of Chinese Academy of SciencesBeijing 100049China High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China

We present a convenient and practical electromagnetic(EM)assisted small-signal model extraction method for InP double-heterojunction bipolar transistors(DHBTs).Parasitic parameters of pad and electrode fingers are extracted by means of 3D EM *** simulations with a new excitation scheme are closer to the actual on-wafer measurement *** simulation settings are calibrated by comparing measurement and simulation of OPEN and SHORT structures.A simplerπ-type topology is proposed for the intrinsic model,in which the base-collector resistance Rμ,output resistance Rce are deleted,and a capacitance Cce is introduced to characterize the capacitive parasitic caused by the collector finger and emitter ground *** intrinsic parameters are all extracted by exact equations that are derived from rigorous *** method is characterized by its ease of implementation and the explicit physical meaning of extraction *** validations are performed at four biases for three InGaAs/InP HBT devices with 0.8×7μm,0.8×10μm and 0.8×15μm emitter,and quite good fitting results are obtained in the range of 0.1-50 GHz.

关键词： electromagnetic simulation InP double-heterojunction bipolar transistor parameter extraction small-signal modeling

Implementing Eco-friendly Reservoir Operation by Using Genetic Algorithm with Dynamic Mutation Operator

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Implementing Eco-friendly Reservoir Operation by Using Genet...

Pea leafminer Liriomyza huidobrensis (Diptera: Agromyzidae) uses vibrational duets for efficient sexual communication

2.10 International Conference on Life System Modeling and Simulation & 2.10 International Conference on Intelligent {2. for Sustainable Energy and Environment

作者： Duan chen1,2. Guobing Huang1, Qiuwen Chen2. Feng jin1 1 Changjiang River Scientific Research institute, Jiuwanfang, Hankou District, Wuhan 430010, {2. 2.Research Center for Eco-environmental Science, chinese academy of sciences, Shuangqinglu 18, Haidian District, beijing 100085, {2.

Simple Genetic Algorithms (SGA) uses a constant rate in mutation operator and may leads to pre-convergence and local optimal deficiency, especially for the problem with many nonlinear constraints such as eco-friendly reservoir operation. The study adapted SGA with a double dynamic mutation operator and developed an optimization model of eco-friendly reservoir operation, and applied it to the cascade reservoirs in the Southwest of china. It is shown that the adaptive GA with the dynamic mutation operator can fulfil the goal of eco-friendly reservoir operation and it was enhanced in search accuracy and global searching ability in comparison with SGA.

关键词： Genetic algorithms, double dynamic mutation operator, Eco-friendly reservoir operation

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Insect Science 2019年第3期26卷 510-522页

作者： jin Ge Jia-Ning Wei ding-Jie Zhang Chun Hi De-{2. Zheng Le Kang State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing China University of chinese academy of sciences Beijing China Key Laboratory of Zoological Systematics and Evolution Institute of Zoology Chinese Academy of Sciences Beijing China School of Instrumentation Science & Optoelectronics Engineering Beihang University Beijing China beijing institutes of Life Science Chinese Academy of Sciences Beijing China

The pea leafminer (Liriomyza huidobrensis) is a notorious pest of vegetables and ornamental plants worldwide. Despite a large number of studies on its biology and ecology, the courtship behavior and sexual communication of this species remain unclear. Here, we studied vibrational communication in the sexual interaction of the pea leafminer. On host plant leaves, females and males behaviorally displayed the bobbing-quivering alternation, which finally led to copulation. Moreover, records of laser vibrometry revealed threesignal duets underlying the behavioral alternation. Sexually mature males spontaneously emitted calls (MCs) to initiate the duets. The females rapidly responded to MCs by emitting replies (FRs) that are longer in duration. The FRs further triggered male replies (MRs) in their search for potential partners. Leafminer-produced vibrational signals convey efficient information to partners and generate pair formation on stretched substrates, such as plant leaves and nylon mesh, but cannot elicit responses on dense substrates, such as glass and plastic. Vibrational playbacks of both MCs and FRs can elicit replies in females and males, respectively. This study completely characterizes substrate-borne vibrational duets in a dipteran insect. The discovery of vibrational sex signals in the pea leafminer provides new insights for the development of novel approaches to control the pest and its relative species.

关键词： biotremology courtship behavior Liriomyza vibrational communication

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工程项目内部收益率的优化估计

系统工程学报 2003年第1期18卷 87-90页

作者：金菊良魏一鸣丁晶合肥工业大学土建学院合肥230009 中国科学院科技政策与管理科学研究所北京100080 四川大学水电学院成都610065

内部收益率法是目前评价工程项目经济可行性的一种重要分析工具.内部收益率的估计与工程项目现金流程的符号改变情况有关,这一点在目前的工程经济学的理论和应用中常被忽视.为此,文中导出了计算工程项目内部收益率的两种实用公式,并提... 详细信息

内部收益率法是目前评价工程项目经济可行性的一种重要分析工具.内部收益率的估计与工程项目现金流程的符号改变情况有关,这一点在目前的工程经济学的理论和应用中常被忽视.为此,文中导出了计算工程项目内部收益率的两种实用公式,并提出了统一用加速遗传算法(AGA)来优化估计内部收益率的新方法.实例分析的结果说明,用AGA计算内部收益率简便、有效,计算精度高.

关键词：工程项目内部收益率优化估计

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需求侧响应的算力网络调度策略研究

电信工程技术与标准化 2024年第1期37卷 36-41页

作者：周丹媛刘超清王志强丁亦志房永进中国移动通信集团有限公司北京100033 中国移动通信集团设计院有限公司北京100080 中国移动通信集团设计院有限公司江苏分公司南京211800

本文介绍了一种考虑需求侧响应的算力网络调度策略,包括算力系统调度方法、算力供给侧和需求侧的匹配、综合算力系统调度方法以及未来研究方向。通过将需求分类为可转移需求、可消减需求、可中断需求和不可消减需求,采用分时计价策略和... 详细信息

本文介绍了一种考虑需求侧响应的算力网络调度策略,包括算力系统调度方法、算力供给侧和需求侧的匹配、综合算力系统调度方法以及未来研究方向。通过将需求分类为可转移需求、可消减需求、可中断需求和不可消减需求,采用分时计价策略和可中断需求策略进行需求侧算力的调整,并调整各分布式数据中心设备算力的供给和边缘节点设备的接入,在满足综合算力系统的各约束前提下获得最低的系统总成本。该调度方法可以为算力网络系统的并网和智能调度提供一种新的思路。

关键词：算力网络需求侧响应综合算力系统调度

Organic-inorganic hybrid piezotronic bipolar junction transistor for pressure sensing

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Microsystems & Nanoengineering 2024年第3期10卷 229-244页

作者： Emad Iranmanesh Zihao Liang Weiwei Li Congwei Liao Shunyu jin Chuan Liu Kai Wang Shengdong Zhang Charalampos Doumanidis Gehan A.J.Amaratunga Hang Zhou Guangdong Provincial Key Laboratory of In-Memory computing Chips School of Electronic and Computer EngineeringPeking University Shenzhen Graduate SchoolShenzhen 518055P.R.China School of Mechanical Engineering Guangdong Technion-Israel Institute of TechnologyShantou 515063P.R.China State Key Laboratory of Microelectronics Device and Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029P.R.China Hefei National Research Center for Physical sciences at the Microscale University of Science and Technology of ChinaHefei 23000PR China School of Electronics and Information Technology Sun Yat-sen UniversityNo.132 East Waihuan RoadGuangzhou 510006P.R.China Department of Mechanical Aerospaceand Biomedical EngineeringUniversity of South AlabamaShelby Hall3128MobileAL 36688USA Electrical Engineering Division Department of EngineeringUniversity of Cambridge9 JJ Thomson AvenueCambridge CB30FAUnited Kingdom Zhejiang University International CampusHainingChina

With the rapid development of the Internet of Things(IoTs),wearable sensors are playing an increasingly important role in daily monitoring of personal health and *** signal-to-noise-ratio has become the most critical performance factor to *** enhance it,on the one hand,good sensing materials/devices have been employed;on the other hand,signal amplification and noise reduction circuits have been ***,most of these devices and circuits work in an active sampling mode,requiring frequent data acquisition and hence,entailing high-power *** this scenario,a flexible and wearable event-triggered sensor with embedded signal amplification without an external power supply is of great ***,we report a flexible two-terminal piezotronic n-p-n bipolar junction transistor(PBJT)that acts as an autonomous and highly sensitive,current-and/or voltage-mediated pressure *** PBJT is formed by two back-to-back piezotronic diodes which are defined as emitter-base and collectorbase *** force exertion on the emitter side,as a result of the piezoelectric effect,the emitter-base diode is forward biased while the collector-base diode is reverse *** to the inherent BJT amplification effect,the PBJT achieves record-high sensitivities of 139.7 kPa^(-1)(current-based)and 88.66 kPa^(-1)(voltage-based)in sensing *** PBJT also has a fast response time of110 ms under exertion of dynamic stimuli ranging from a flying butterfly to a gentle finger ***,the PBJT advances the state of the art not only in terms of sensitivity but also in regard to being self-driven and autonomous,making it promising for pressure sensing and other IoT applications.

关键词： bipolar transistor IoT

Impact of gate offset in gate recess on DC and RF performance of InAlAs/InGaAs InP-based HEMTs

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chinese Physics B 2022年第5期31卷 720-724页

作者： Shurui Cao Ruize Feng Bo Wang Tong Liu Peng ding zhi {2. High-Frequency High-Voltage Device and Integrated Circuits Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China University of chinese academy of sciences Beijing 100029China Guangxi Key Laboratory of Precision Navigation Technology and Application Guilin University of Electronic TechnologyGuilin 541004China

A set of 100-nm gate-length In P-based high electron mobility transistors(HEMTs)were designed and fabricated with different gate offsets in gate recess.A novel technology was proposed for independent definition of gate recess and T-shaped gate by electron beam *** and RF measurement was *** the gate offset varying from drain side to source side,the maximum drain current(I_(ds,max))and transconductance(g_(m,max))*** the meantime,fTdecreased while f;increased,and the highest fmax of 1096 GHz was *** can be explained by the increase of gate-source capacitance and the decrease of gate-drain capacitance and source *** conductance was also suppressed by gate offset toward source *** provides simple and flexible device parameter selection for HEMTs of different usages.

关键词： InP HEMT InGaAs/InAlAs cut-off frequency(fT) maximum oscillation frequency(fmax) asymmetric gate recess

Impact of symmetric gate-recess length on the DC and RF characteristics of InP HEMTs

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chinese Physics B 2022年第1期31卷 675-679页

作者： Ruize Feng Bo Wang Shurui Cao Tong Liu Yongbo Su Wuchang ding Peng ding {2. jin High-Frequency High-Voltage Device and Integrated Circuits Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China University of chinese academy of sciences Beijing 100029China Guangxi Key Laboratory of Precision Navigation Technology and Application Guilin University of Electronic TechnologyGuilin 541004China

We fabricated a set of symmetric gate-recess devices with gate length of 70 *** kept the source-to-drain spacing(L_(SD))unchanged,and obtained a group of devices with gate-recess length(L_(recess))from 0.4µm to 0.8µm through process *** order to suppress the influence of the kink effect,we have done SiN_(X) passivation *** maximum saturation current density(ID_(max))and maximum transconductance(g_(m,max))increase as L_(recess) decreases to 0.4µ*** this time,the device shows ID_(max)=749.6 mA/mm at V_(GS)=0.2.V,V_(DS)=1.5 V,and g_(m,max)=1111 mS/mm at V_(GS)=−0.35 V,V_(DS)=1.5 ***,as L_(recess) increases,it causes parasitic capacitance C_(gd) and g_(d) to decrease,making f_(max) drastically *** L_(recess)=0.8µm,the device shows f_(T)=188 GHz and f_(max)=1112.GHz.

关键词： InP HEMT InGaAs/InAlAs current gain cut-off frequency(fT) maximum oscillation frequency(f_(max)) gate-recess length(L_(recess))

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预测日径流过程的最近邻仿真模型

系统仿真学报 2002年第11期14卷 1494-1496页

作者：金菊良魏一鸣丁晶合肥工业大学土建学院合肥*** 中国科学院科技政策与管理科学研究所北京100080 四川大学水电学院成都610065

准确预测日径流过程对区域水资源管理和防洪抗旱决策具有重要的现实意义。文中探讨了用基于历史相似性和数据驱动的最近邻仿真(NNB)模型预测日径流过程的新途径,提出了一套基于加速遗传算法的NNB建模方案。实例研究的结果说明:用NNB模... 详细信息

准确预测日径流过程对区域水资源管理和防洪抗旱决策具有重要的现实意义。文中探讨了用基于历史相似性和数据驱动的最近邻仿真(NNB)模型预测日径流过程的新途径,提出了一套基于加速遗传算法的NNB建模方案。实例研究的结果说明:用NNB模型进行日径流过程预测的计算直观、精度高,这套NNB建模方案简便、有效和通用,在水文气象时间序列预测中具有较好的实用价值。

关键词：预测日径流过程最近仿真模型遗传算法水文分析