1 中国电子科技集团公司第二十四研究所, 重庆 400060
2 重庆中科渝芯电子有限公司, 重庆 401332
3 模拟集成电路国家级重点实验室, 重庆 400060
提出了一种适用于环形栅LDMOS器件的子电路宏模型。基于对环形栅LDMOS器件结构的分析, 将环形栅LDMOS器件分为两个部分, 一个是中间的条形栅MOS部分, 使用常规的高压MOS模型; 另一个是端头部分, 为一个圆环形栅极MOS器件, 采用了一个单独的模型。基于40 V BCD工艺的N沟道LDMOS器件进行模型提取与验证。结果表明, 建立的宏模型具有较强的几何尺寸缩放功能, 对于不同尺寸的器件都具有较高的拟合精度, 并且模型能够兼容当前主要的商用电路仿真器Hspice和Spectre。
环形栅 宏模型 BCD工艺 annular gate LDMOS LDMOS macro model BCD process
湖南师范大学物理与电子科学学院, 湖南 长沙 410081
利用光生伏特效应设计一种新型的光控双向栅极可控硅晶闸管(LDGSCR)防护器件,研究光照对静电放电(ESD)维持窗口的调控作用。使用光生电流来模拟光照控制ESD设计窗口的物理效应,实现一种光控器件的可控硅晶闸管(SCR)宏观模型。在1.5 V的电压模拟光照下,该模型的维持电流相比无光条件增加35 mA,表明使用光照来调整ESD的维持窗口可以降低被保护电路发生闩锁的风险。采用0.18 μm BCD工艺制造LDGSCR器件并进行测试,测试结果与模型仿真结果之间的最大误差仅为0.09 V和0.004 A。验证表明,该宏观模型可以消除传统耦合晶体管电路模型中存在的收敛性问题,极大减少开发光控SCR器件新型结构所需的时间和精力。
光电子学 光控器件 静电放电防护器件 光电流 维持窗口 紧凑宏观模型 光学学报
2021, 41(11): 1125001
1 大连交通大学 机械工程学院, 辽宁 大连116023
2 上海宇航系统工程研究所, 上海201109
凝视成像激光雷达技术是空间非合作目标位姿测量重要手段。激光雷达指标选取极大影响航天器载荷, 优化选取激光雷达指标, 使之既能满足空间任务需求, 又能有效减少航天器载荷, 减少能源消耗, 意义重大。传统解决此问题的方法是通过经验选取, 激光雷达指标与目标属性相容性宏模型的提出, 可以为激光雷达激光输出功率、分辨率、视场角和测距精度四项指标选取提供理论依据。具体的, 利用目标尺度和雷达目标距离计算雷达分辨率和视场角初值, 对雷达最大可测距离进行迭代求解, 为优化激光雷达发射功率提供依据。充分利用深度共生矩阵二阶参数迭代优化, 确定雷达最优分辨率和视场角。最后, 通过点云配准算法迭代得出测量该目标的合适的测距精度。实验结果表明, 激光雷达宏模型优化选取的雷达指标满足雷达指标选择的需求。
激光雷达指标 优化选取 目标属性 宏模型 迭代 indexes of lidar optimal selection attribute of target macro model iteration 红外与激光工程
2018, 47(2): 0230003
Author Affiliations
Abstract
1 Department of Electronics and Communication Engineering, Rajasthan Institute of Engineering and Technology, Jaipur, India
2 Department of Electronics and Communication Engineering, Jamia Millia Islamia, New Delhi, India
The spice model for photo catalytic sensor (PCS) proposed by Whig and Ahmad overcomes several drawbacks like complex designing, non-linearity, and long computation time generally found in the flow injection analysis (FIA) technique by Yoon-Chang Kim et al. for the determination of chemical oxygen demand (COD). The FIA technique involves the complete analysis including sampling and washing. The flow injection analysis is an analytical method for the measurement of the chemical oxygen demand by using the photochemical column. This method uses a bulky setup and takes 10 minutes to 15 minutes to get the output result which is a tedious and time consuming job. If the conventional method is continuously used for a long time then it is stable only for 15 days. The purpose of this paper is to propose a new floating gate photo catalytic sensor (FGPCS) approach which has low power consumption and more user-friendly, and it is fast in operation by the modeling and optimization of sensor used for water quality monitoring. The proposed model operates under sub-threshold conditions which are appreciated in large integrated system design. The results of simulation are found to be fairly in agreement with the theoretical predictions. The results exhibit near linear variations of parameters of interest with appreciably reduced response time.
FGPCS spice modeling simulation photo catalytic sensor flow injection analysis macro model Photonic Sensors
2015, 5(2): 123
北京京东方科技集团技术研发中心， 北京 100176
文章介绍了一种有机发光二极管的电路仿真宏模型及其元件参数数值的提取方法。该电路仿真宏模型不但表征了有机发光二极管的全固态多层结构，而且表征有机发光二极管发光的物理过程。同时还提出了采用交流阻抗法提取该有机发光二极管电路仿真宏模型的元件参数的方法。该有机发光二极管的电路仿真宏模型可用于有源二极管显示器的背板电路设计过程中，背板电路与有机发光二极管器件的联合电路功能仿真，从而实现更准确的背板电路性能评估。
有机发光二极管 电路仿真宏模型 交流阻抗法 OLED macro model for circuit simulation AC impedance method
1 Key Laboratory of Optoelectronic Technology and Systems for Ministry of Education, Chongqing University, Chongqing 400044, CHN
2 Communication Engineering College of Chongqing University, Chongqing 400044, CHN
