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Distributed Computing and Electrical circuits and Electronics (ICDCECE), IEEE International Conference on

作者： Zhenlin Huang Zheng Wang Zhenyu Chen Yongwen Gong Xing Wen Liuqi Zhao Ning Wang Ziyan Feng Tianyi Qiu China Southern Power Grid Extra High Voltage Power Transmission Company Guangzhou China Beijing Smartchip Microelectronics Technology Company Limited Beijing China Zhengzhou Zhongke Institute of Integrated Circuit and System Application Zhengzhou China

This paper proposes a new design scheme for an OCR platform. The scheme first pre-trains the model on a standard dataset to improve its basic recognition ability, and then fine-tunes the pre-trained model using transfer learning techniques to a custom scenario, thus improving its recognition ability in power industry applications. This approach greatly reduces the need for annotated data and can quickly adapt to new meter types and updates. Additionally, an intelligent data collection, processing, and analysis platform can effectively help power companies monitor, measure, diagnose, and predict equipment and meters, thereby enhancing enterprise safety and stability. By introducing transfer learning-related techniques, the model’s knowledge learned on a standard dataset is transferred to a custom scenario, improving its recognition ability in power industry-specific applications and achieving rapid warning and diagnosis of abnormal situations in power equipment, further improving production efficiency and safety of the enterprise.

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A Fine-Grained Access Control Method Based on Role Permission Management

A Fine-Grained Access Control Method Based on Role Permissio...

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Distributed Computing and Electrical circuits and Electronics (ICDCECE), IEEE International Conference on

作者： Hualu Yuan Zheng Wang Zhenyu Chen Yongwen Gong Jinqi Lu Yueshen Hu Lincheng Li Fang Qian China Southern Power Grid Extra High Voltage Power Transmission Company Guangzhou China Beijing Smartchip Microelectronics Technology Company Limited Beijing China Zhengzhou Zhongke Institute of Integrated Circuit and System Application Zhengzhou China

In order to ensure the security of data in power systems, it is necessary to establish a complete data protection system. This paper proposes an innovative access control technology framework based on fine-grained data access control technology and role-based access control management. This framework not only embeds a neural network model, but also introduces context-based information to implement scenario-based access control, making access permissions more precise and flexible. The fine-grained access control technology framework utilizes a data classification model and a hierarchical model, and can sort sensitive data in the directory based on desired classification results, characteristics, and preset data levels. Finally, access matching algorithms can be built based on the required roles and data to achieve rapid matching of hierarchical data and different roles. In summary, the fine-grained access control technology framework based on role-based access control management proposed in this article is a very valuable innovation. It cannot only better protect sensitive data in power systems, but also more accurately and flexibly meet user requirements in terms of access control. The data security protection system established based on this technical framework can effectively respond to different requirements, including different levels and scenarios, and improve the security of the system.

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Reconfigurable Bandpass Filter With Flexible Tuning of Both Center Frequency and Bandwidth

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SSRN 2023年

作者： Wang, Zhengjia Leng, Yongqing Qiu, Xin Hui, Ming Jing, Youbo Cao, Demin Henan Institute of Advanced Technology Zhengzhou University Zhengzhou450000 China Zhengzhou Zhongke Institute of Integrated Circuit and System Application Zhengzhou450000 China Institute of Microelectronics Chinese Academy of Sciences Beijing100029 China College of Physics and Electronic Engineering Nanyang Normal University Nanyang473061 China

This paper proposes a novel reconfigurable filter that can flexibly tune both the center frequency and bandwidth simultaneously. This reconfigurable filter consists of a filter network with Chebyshev properties and a parallel resonator. These two structures are symmetrical and can be analyzed using the odd-even mode analysis method for the filtering network. With the addition of a tuning factor, the Chebyshev filter network provides a shift in passband and coupling coefficients that can be adjusted to maintain a stable bandwidth;the parallel resonators will produce adjustable transmission zeros on either side of the passband, providing good out-of-band rejection when adjusting the bandwidth and center frequency. By using the transformation of the resonant frequency of two filtering networks, filters of different orders can also be achieved. This reconfigurable filter can achieve continuous bandwidth and center frequency adjustment and can maintain a constant absolute bandwidth during the center frequency adjustment process, with flexible tuning methods. Through simulation and experiments, it has been proven that this reconfigurable filter has a tunable frequency coverage range of 0.4GHz to 2GHz, with a large tunable range. © 2023, The Authors. All rights reserved.

关键词： Bandwidth

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Non-Linear 3d Reconstruction For Compressive X-Ray Tomosynthesis

Non-Linear 3d Reconstruction For Compressive X-Ray Tomosynth...

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IEEE International Conference on Image Processing

作者： Qile Zhao Xu Ma Angela Cuadros Gonzalo R. Arce Rui Chen Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of China School of Optics and Photonics Beijing Institute of Technology Beijing China Department of Electrical and Computer Engineering University of Delaware USA Integrated Circuit Advanced Process Center Institute of Microelectronics of Chinese Academy of Sciences Beijing China

ISBN: (数字)9781728163956

ISBN: (纸本)9781728163963

Compressive X-ray tomosynthesis is an emerging technology that can be used for medical diagnosis, safety inspection and industrial non-destructive testing. Traditional compressive X-ray tomosynthesis uses sequential illumination to interrogate the object of interest, which generates non-overlapping projection measurements. However, when multiple X-ray sources emit simultaneously, the projections corresponding to different sources overlap creating multiplexed measurements. Such measurement strategy leads to a non-linear reconstruction problem. The reconstruction of the three-dimensional (3D) object from multiplexed projections is an important problem. This paper proposes a non-linear 3D reconstruction approach for compressive X-ray tomosynthesis, where a set of coding masks are used to generate structured illumination and reduce radiation dose. The effectiveness of the method is verified by simulation experiments. It is shown that the proposed approach can reconstruct high-quality images with just a few snapshots.

关键词： Image reconstruction X-ray imaging Detectors Biomedical imaging Three-dimensional displays Encoding

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Stochastic EUV Resist Model

Stochastic EUV Resist Model

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Electronics Design Automation (ISEDA), International Symposium of

作者： Guangjian He Jing Xue Taian Fan Yayi Wei Computational Lithography R&D Center Guangdong Greater Bay Area Institute of Integrated Circuit and System Guangzhou China Achievement Transformation Department Institute of Microelectronics Chinese Academy of Sciences Beijing China School of Integrated Circuits Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing China Advanced Semiconductor Technology Development Department Institute of Microelectronics Chinese Academy of Sciences Beijing China

The stochastic effects in photoresist patterning is of great concern in the implementation of EUV lithography. The stochastic nature of EUV chemically amplified resist requires new modeling approaches rather than the continuous model used in DUV. In this paper, a stochastic model based on Gillespie algorithm is introduced, which subdivides the resist volume into many rectangular small cells and simulates the reaction-diffusion behavior of molecules in a cell volume according to carefully calculated probability. In addition, we further explore the influence of the cell size on the stochastic model. There is an optimal cell size in consideration of precision and running time. When cell size is sufficiently large, the results will approximate to the continuous model.

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STT-MRAM Based ESD and EFT Immunity Analysis

STT-MRAM Based ESD and EFT Immunity Analysis

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Workshop on Electromagnetic Compatibility of Integrated circuits (EMC Compo)

作者： Jianfei Wu Yanfang Lu Yang Li Hongli Zhang Yiming Zhang Xing Zhao Wei Zhu College of Electronic Science National University of Defense Technology Changsha China Tianjin Institute of Advanced Technology Tianjin China School of Electronics and Information Engineering Hebei University of Technology Tianjin China Institute of Microelectronics of Chinese Academy of Sciences Beijing China Guangdong Dawan District Institute of Integrated Circuit and System Application Guangzhou China

ISBN: (数字)9798331504632

ISBN: (纸本)9798331504649

This study analyses the Electromagnetic Immunity (EMI) of STT-MRAM. By exhaustively exploring and verifying the Electrostatic discharge (ESD) and Electrical Fast Transient (EFT) of STT-MRAM, the impact of ESD and EFT on the performance of STT-MRAM is investigated, the potential threat of transient electromagnetic interference to STT-MRAM memory is revealed, and suggestions are made to improve its electromagnetic compatibility (EMC), which provides an important reference for its reliable application.

关键词： Technological innovation Electromagnetic interference Capacitors Immunity testing Electrostatic discharges Synchronization Reliability Transient analysis Electromagnetics Research and development

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The Effect of Γ-Ray Irradiation on Voltage-Controlled Magnetism of Hfzro/Cofeb Hall Bar Device

SSRN

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SSRN 2023年

作者： Cao, Wei Chen, Jia Yu, Peiyue Zhao, Lei Li, Yanru Yang, Meiyin Xu, Jing Gao, Jianfeng Kang, Jin Bu, Weihai Zheng, Kai Yang, Bingjun Yue, Lei Chao, Zuo Cui, Yan Luo, Jun Institute of Microelectronics Chinese Academy of Sciences Beijing100029 China Beijing100049 China Corporation Beijing100176 China Guangdong Greater Bay Area Institute of Integrated Circuit and System Guangdong510535 China ULVAC Research Center Suzhou CO. Ltd. Suzhou215026 China

We investigate the total ionizing dose (TID) effect on the voltage-controlled-magnetic-anisotropy (VCMA) Hall bar device based on HfZrO/CoFeB hybrid film. Devices under test are exposed to 1.17MeV 60Co γ-ray at the dose rate of 50 rad(Si)/s. The Anomalous Hall measurement is performed at several certain irradiation dosages. The results show that the VCMA effect is enhanced with the accumulation of irradiation dosage. We propose a mechanism of interface trapped charges to explain this phenomenon. Thus, our work indicates that the magnetic tunneling junction based on HfZrO/CoFeB hybrid film is a promising building block for radiation-hard VCMA-MRAM. © 2023, The Authors. All rights reserved.

关键词： Magnetic anisotropy

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A Scanner Matching Method based on Interior-point BFGS Algorithm 5

A Scanner Matching Method based on Interior-point BFGS Algor...

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5th International Workshop on Advanced Patterning Solutions, IWAPS 2021

作者： Chen, Yuguang Li, Sikun He, Jianfang Zhang, Libin Shi, Weijie Tang, Ming Wei, Yayi Wang, Xiangzhao Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Science Laboratory of Information Optics and Opto-Electronic Technology Shanghai China School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China Integrated Circuit Advanced Process RD Center Institute of Microelectronics Chinese Academy of Sciences Beijing China Dongfang Jingyuan Electron Limited Beijing China National Engineering Laboratory for Next Generation Internet Access System School of Optical and Electronic Information Wuhan China

ISBN: (纸本)9781665420785

A scanner matching method based on interior-point BFGS algorithm is proposed. This method minimizes the critical dimension (CD) differences by optimizing parameters of illumination sources, including inner partial coherence factor, outer partial coherence factor, numerical aperture and opening angle of illumination poles for dipole and quadrupole sources. Simulations of scanner matching are performed. Scanners with annular, dipole and quadrupole sources are matched in the simulations. Through-pitch Line/space patterns are used as the matching targets. The results of these simulations show that, the proposed method can reduce root-mean-square of CD differences after matching. In the majority of the simulation cases, the proposed method is faster than methods based on the Levenberg-Marquardt algorithm, and could even achieve better result. Analyses on the proposed method are given. © 2021 IEEE.

关键词： Photolithography

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Experimental research on TF SOI CMOS ring oscillator with EM NMOSFET and AM PMOSFET assemblies at high temperature

Experimental research on TF SOI CMOS ring oscillator with EM...

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International Symposium on Physical & Failure Analysis of Integrated circuits

作者： Haipeng Zhang Lijian Ma Tongli Wei Yaolan Feng Zhengfan Zhang Key Laboratory of RF Circuit & System Ministry of Education School of Electronics and Information Hangzhou Dianzi University Zhejiang China Microelectronics Center South-East University Nanjing Jiangsu China The 24th Research Institute China Electronics Technology Group Corporation Chongqing China

An SOI(silicon on insulator) CMOS RO(ring oscillator) with EM(enhanced mode) NMOSFET and AM(accumulative mode) PMOSFET assembly was studied at high temperatures. The temperature dependency of its frequency was deduced, experimentally measured and fitted with polynomial. It was proved that its frequency decrease faster below 473 K and is not less than 7.75 MHz even at 573 K. The temperature dependency of its logic swing was also experimentally measured and fitted with polynomial, which indicates that its logic swing slightly decreases approximately according to quadratic law as temperature increases from room temperature to 573 K and still lies in the correct logic margins even at high temperatures up to 573 K. Therefore it is still suitable for some high temperature applications.

关键词： MOSFET circuits Ring oscillators Temperature dependence Frequency Threshold voltage Inverters Assembly systems CMOS technology Insulation Polynomials

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BAG2 Assisted Hierarchical Analog Layout Synthesis for Planar Technologies

BAG2 Assisted Hierarchical Analog Layout Synthesis for Plana...

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Austrian Workshop on microelectronics (Austrochip)

作者： Matthew Bio Wolfgang Scherr A. S. Agbemenu Santiago Martin Sondón Johannes Sturm Vinayak Hande Josef Ressel Centre for System-on-Chip Design Automation Carinthia Institute for Microelectronics Carinthia University of Applied Sciences Department of Computer Engineering Kwame Nkrumah University of Science and Technology Kumasi Ghana Department of Integrated Systems and Circuit Design Carinthia University of Applied Sciences Villach Austria

Analog circuit design automation remains an intense area of attention and has seen both new and existing tools continued to be developed targeting different phases of the analog design flow to reduce development time and cost. One of the promising tools is the Berkeley analog generator (BAG2) framework which is an open-source analog layout generator for automating and verifying circuit layouts. It promises a process-independent flow as well as encourages design re-use due to using parameterized generators which can be scaled as required and this reduces the layout-development time compared to manual hand-made layouts. This work describes the effort and results of evaluating the BAG2 framework for the TSMC 65nm and Cadence GPDK 45nm processes. A case study is made with a number of circuits to discuss the problems in setting up and using BAG2 for the above technologies as well as the limitations and solutions required to utilize the framework effectively.

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