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Asia-Pacific Conference on Microwave

作者： Keto Togawa Takeo Kobashi Tsunayuki Yamamoto Advanced Electronics and Information System Engineering Course National Institute of Technology Tsuyama College Tsuyama-shi Japan Department of Integrated Science and Technology National Institute of Technology Tsuyama College Tsuyama-shi Japan

In this paper, an arc-shaped balanced CRLH waveguide for a microwave snow melting system is designed and simulated by an electromagnetic simulator. A balanced frequency of the waveguide is obtained at 2.45 GHz. The frequency is selected as an operating frequency of a snow melting system. Designed arc-shaped balanced CRLH waveguide is sandwiched with two straight-shaped balanced CRLH waveguides, and an electric field distribution in the waveguides is simulated. Observed E-field shows a propagating electromagnetic wave with very long wavelength, and zeroth-order resonance or quasi zeroth-order resonance phenomenon can be obtained at 2.45 GHz.

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Channel Measurements and Modeling for Dynamic Vehicular ISAC Scenarios at 28 GHz

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IEEE Transactions on Communications 2025年

作者： Zhang, Zhengyu He, Ruisi Ai, Bo Yang, Mi Zhang, Xuejian Qi, Ziyi Yuan, Yuan Beijing Jiaotong University State Key Laboratory of Advanced Rail Autonomous Operation School of Electronics and Information Engineering Frontiers Science Center for Smart High-speed Railway System Beijing100044 China

Integrated Sensing and Communication (ISAC) is a promising technology for 6G, with the goal of providing end-to-end information processing and inherent perception capabilities for future communication systems. Within ISAC emerging application scenarios, vehicular ISAC technologies have the potential to enhance traffic efficiency and safety through integration of communication and synchronized perception abilities. To establish a foundational theoretical support for vehicular ISAC system design and standardization, it is necessary to conduct channel measurements, and model to obtain a deep understanding of the radio propagation. In this paper, a dynamic statistical channel model is proposed for vehicular ISAC scenarios, incorporating Sensing Multi-Path Components (S-MPCs) and Clutter Multi-Path Components (C-MPCs), which are identified by the proposed tracking algorithm. Based on actual vehicular ISAC channel measurements at 28 GHz, time-varying sensing characteristics in front, left, and right directions are investigated. To model the dynamic evolution process of channel, number of new S-MPCs, lifetimes, initial power and delay positions, dynamic variations within their lifetimes, clustering, power decay, and fading of C-MPCs are statistically characterized. Finally, the paper provides implementation of dynamic vehicular ISAC model and validates it by comparing key simulation statistics between measurements and simulations. © 1972-2012 IEEE.

关键词： Fading (radio)

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Feature Extraction of Gait Data via PCA and Personal Identification Using Neural Networks

Feature Extraction of Gait Data via PCA and Personal Identif...

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IEEE International Conference on Big Data Analysis (ICBDA)

作者： Kazuki Nishimura Akio Ishida Jun Murakami Naoki Yamamoto Advanced Course of Electronics and Information Systems Engineering National Institute of Technology Kumamoto College Kumamoto Japan Faculty of Liberal Arts National Institute of Technology Kumamoto College Kumamoto Japan Faculty of Electronics and Information Systems Engineering National Institute of Technology Kumamoto College Kumamoto Japan

ISBN: (数字)9798350352962

ISBN: (纸本)9798350352979

Gait analysis is used in a wide range of fields, including clinical applications such as diagnosis and rehabilitation, investigation of gender and racial differences, and personal identification, which is important in forensic investigations and security. In recent years, gait data can be obtained from force plates, 3D motion capture, RGB cameras, and so on. In this study, we applied principal component analysis (PCA) to gait data captured with an RGB camera and analyzed the main data characteristics. However, the data used here is joint information whose posture is estimated using neural networks (NN) from gait videos taken with the camera. Furthermore, we created a NN model for personal identification using data whose dimensionality was reduced using PCA and attempted the identification.

关键词： Training Estimation Training data Artificial neural networks Cameras Feature extraction Data models

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Chalcogenide integrated nanophotonics and its potential for quantum photonics

Chalcogenide integrated nanophotonics and its potential for ...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on information Photonics and Optical Communications, IPOC 2024

作者： Lei, Kunhao Xu, Kai Bao, Kangjian Weng, Jiawei Li, Lan Lin, Hongtao The State Key Lab of Brain-Machine Intelligence Key Laboratory of Micro-Nano Electronics and Smart System of Zhejiang Province College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China The Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University Zhejiang Hangzhou310030 China Institute of Advanced Technology Westlake Institute for Advanced Study Zhejiang Hangzhou310024 China

Due to the high optical nonlinearity and nonvolatile phase-changing properties, chalcogenide integrated nanophotonics are emerging for entangling photon generation and nonvolatile quantum states operation. We will rev... 详细信息

ISBN: (纸本)9798350379266

关键词： Silicon photonics

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STT-MRAM Based ESD and EFT Immunity Analysis 14

STT-MRAM Based ESD and EFT Immunity Analysis

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14th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMC Compo 2024

作者： Wu, Jianfei Lu, Yanfang Li, Yang Zhang, Hongli Zhang, Yiming Zhao, Xing Zhu, Wei 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: (纸本)9798331504632

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. ©2024 IEEE.

关键词： Electrostatic discharge

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Research on Metamaterial Technology for Microwave Wireless Power Transfer

Research on Metamaterial Technology for Microwave Wireless P...

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International Symposium on Antennas and Propagation (ISAP)

作者： Tsunayuki Yamamoto Takeo Kobashi Tamami Maruyama Department of Integrated Science and Technology National Institute of Technology Tsuyama College Tsuyama-shi Japan Advanced Electronics and Information System Engineering Course National Institute of Technology Tsuyama College Tsuyama-shi Japan Department of Production Systems Engineering Institute of Technology Hakodate College Hakodate-shi Japan

ISBN: (数字)9798350364774

ISBN: (纸本)9798350364781

In this paper, two technologies of metamaterial for microwave wireless power transfer are shown. One is a zeroth-order resonance for a microwave snow melting system, and another one is a focusing reflector for realizing of a highly efficient wireless power transfer space. A zeroth-order resonance leads a uniformed microwave heating and a flexibility of feeding in a snow melting system. Focusing reflector can make some electromagnetic hot and null points in a space. These are expected to be required technologies for highly efficient wireless power transfer.

关键词： Microwave antennas Microwave technology Electromagnetic heating Snow Focusing Wireless power transfer Resonance Metamaterials Electromagnetics Microwave propagation

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Highly sensitive piezoresistive and thermally responsive fibrous networks from the in situ growth of PEDOT on MWCNT-decorated electrospun PU fibers for pressure and temperature sensing

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Microsystems & Nanoengineering 2023年第5期9卷 73-85页

作者： Yunyun Luo Libo Zhao Guoxi Luo Linxi Dong Yong Xia Min Li Ziping Li Kaifei Wang Ryutaro Maeda Zhuangde Jiang State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemXi’an Jiaotong UniversityXi’anChina School of Mechanical Engineering Xi’an Jiaotong UniversityXi’anChina Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing YantaiChina Ministry of Education Engineering Research Center of Smart Microsensors and Microsystems College of Electronics and InformationHangzhou Dianzi UniversityHangzhouChina Department of Emergency The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’anChina

Flexible electronics have demonstrated various strategies to enhance the sensory ability for tactile perception and wearable physiological *** microstructures have attracted much interest because of their excellent mechanical properties and ***,a structurally robust fibrous mat was first fabricated by electrospinning,followed by a sequential process of functionalization utilizing ultrasonication treatment and in situ polymerization *** polyurethane(PU)microfibers were anchored with multi-walled carbon nanotubes(MWCNTs)to form conductive paths along each fiber by a scalable ultrasonic cavitation treatment in an MWCNT ***,a layer of poly(3,4-ethylene dioxythiophene)(PEDOT)was grown on the surface of PU fibers decorated with MWCNTs to enhance the conductive conjunctions of *** to the superior electromechanical behaviors and mechanical reinforcement of PEDOT,the PEDOT/MWCNT@PU mat-based device exhibits a wide working range(0–70 kPa),high sensitivity(1.6 kPa−1),and good mechanical robustness(over 18,000 cycles).The PEDOT/MWCNT@PU mat-based sensor also demonstrates a good linear response to different temperature variations because of the thermoelectricity of the PEDOT/MWCNT *** novel strategy for the fabrication of multifunctional fibrous mats provides a promising opportunity for future applications for high-performance wearable devices.

关键词： fibers PEDOT conductive

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Design of a Novel Autonomous Docking system With a Supporting Robotic Fish

Design of a Novel Autonomous Docking System With a Supportin...

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2023 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2023

作者： Dong, Huijie Zhao, Chunyang Qiao, Tiezhu Wang, Jian Chen, Di Meng, Yan Yu, Junzhi Taiyuan University of Technology Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan030024 China Chinese Academy of Sciences Laboratory of Cognitive and Decision Intelligence for Complex System Institute of Automation Beijing100190 China Peking University State Key Laboratory for Turbulence and Complex Systems Department of Advanced Manufacturing and Robotics College of Engineering Beijing100871 China Guangdong Ocean University College of Electronics and Information Engineering Zhanjiang524088 China

ISBN: (纸本)9798350327182

Underwater supporting robots serving as a relay of energy supplements and communication for other underwater equipment are promising for ocean exploration, development, and protection. This paper proposes a novel autonomous docking system centered on a designed supporting robotic fish named 'CourierFish'. Specifically, CourierFish is capable of docking with a surface dock station for supplying itself and docking with a seafloor platform for supporting equipment in the platform. A visual navigation scheme integrating LED and ArUco markers is presented for accurate localization. The control approach for docking motion is also illustrated. Simulations and aquatic experiments are performed to verify the feasibility of the proposed docking system. The obtained results lay a solid foundation for the construction of various underwater equipment and robot networks. © 2023 IEEE.

关键词： Fish

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Nonvolatile Reconfigurable Phase-change-materials Integrated Silicon Photonics

Nonvolatile Reconfigurable Phase-change-materials Integrated...

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2024 Photonics and Electromagnetics Research Symposium, PIERS 2024

作者： Xu, Kai Wei, Maoliang Tang, Bo Li, Junying Yun, Yiting Lei, Kunhao Wu, Yingchun Li, Lan Lin, Hongtao Zhejiang University State Key Laboratory of Modern Optical Instrumentation Key Laboratory of Micro-Nano Electronics and Smart System of Zhejiang Province College of Information Science and Electronic Engineering Hangzhou China Institute of Microelectronics of the Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Hangzhou Institute for Advanced Study Hangzhou China Westlake University Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Hangzhou China Westlake Institute for Advanced Study Institute of Advanced Technology Hangzhou China

ISBN: (纸本)9798350375909

The emergence of integrated photonic technology provides an attractive solution of high speed, broad bandwidth and strong parallelism for large-scale information transmission and processing in interconnection, communication and computing. Reconfigurability is necessary for photonic processors to adapt varieties of application scenarios in the fields of data exchange, microwave photonics and neural networks. As yet, thermo-optical effect and carrier plasma dispersion effect are the most common phenomena for optical modulation. However, the volatility not only requires continuous power supply to maintain the devices' state, but also accompanies with serious thermal crosstalk induced by active regions. Hence, the nonvolatile methods that can reconfigure and fix on the current state for a long time after a single external excitation are considered as one of the significant technologies in the next generation of integrated photonics. Nonvolatile reconfiguration has been achieved through trapped-charge effect, bistable micro-electromechanical system (MEMS) with nano-latch mechanism and ferroelectric materials, which suffer from high loss, lower stability and complex process flow. Chalcogenide phase change materials (PCM) have become a promising method to realize compact and nonvolatile reconfigurable integrated photonic devices due to the high optical constant contrast between amorphous state and crystalline state, superiorly stable property and low temperature deposition possibility. Here, we developed a monolithic back-end-of-line integration technology of PCM in silicon photonics, supporting "Zero-change"heterogeneous integration platform at wafer scale. On this basis, nonvolatile integrated photonic devices with excellent performance have been fabricated. It lays a foundation for improving the energy efficiency and integration density of integrated photonic processors and suppressing thermal crosstalk between integrated photonic devices. © 2024 IEEE.

关键词： Silicon wafers

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A TRACK ASSOCIATION ALGORITHM BASED ON MOTION DYNAMICS FEATURES IN ENTOMOLOGICAL RADAR

A TRACK ASSOCIATION ALGORITHM BASED ON MOTION DYNAMICS FEATU...

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IET International Radar Conference 2023, IRC 2023

作者： Li, Biao Liu, Hanzhe Zhang, Tianran Cai, Jiong Wang, Rui The Radar Research Lab School of Information and Electronics Beijing Institute of Technology Beijing100081 China The Advanced Technology Research Institute Beijing Institute of Technology Jinan250300 China Beijing Key Laboratory of Embedded Real-time Information Processing Technology Beijing100081 China Beijing Institute of Electronic System Engineering Beijing100854 China

ISBN: (纸本)9781839539954

When tracking densely distributed targets such as insects, the traditional trajectory association algorithm exhibits poor correlation performance, leading to a decline in multi-target tracking efficiency. In this paper, based on the behavioral characteristics of insects gathering and co-orienting during aerial flight, a motion dynamic feature-assisted multi-target tracking method is proposed. Firstly, a three-dimensional biological distribution state matrix is constructed through spatial gridization. Then, a three-dimensional circular convolution is employed to estimate the target's motion dynamic feature, assisting in multi-target trajectory initialization. Finally, the improvement effect of the method on trajectory tracking accuracy is validated through simulations and migration insect data. © The Institution of engineering & Technology 2023.

关键词： Radar tracking

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