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4th International Applied Computational Electromagnetics Society Symposium in China, ACES-China 2021

作者： Wu, Zhe Zhang, Congtian Xu, Lijie National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing University of Posts and Telecommunications Nanjing China

A dual-linear polarized tightly coupled dipole array (TCDA) is presented with a 9.3:1 bandwidth for voltage standing wave ratio (text{VSWR}) © 2021 Applied Computational Electromagnetics Society (ACES).

ISBN: (纸本)9781733509619

关键词： Bandwidth

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A Scalable Model for On-Chip Interdigital Capacitor Based on Space-Mapping Neural Network

A Scalable Model for On-Chip Interdigital Capacitor Based on...

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International Conference on Integrated Circuits and microsystems (ICICM)

作者： Yuqing Xiong Siqing Guo Shanwen Hu Yan Gu Yuming Fang Yufeng Guo College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications Nanjing China National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing China

ISBN: (数字)9798331509453

ISBN: (纸本)9798331520243

A scalable model for on-chip interdigital capacitor is proposed based on space-mapping neural network (SMNN), which combines the equivalent circuit of capacitor and perceptron neural network. By expanding the traditional series equivalent circuit into a $\pi$ -type structure and adding a series network of resistor and capacitor to characterize the coupling effect, the variation of the equivalent series resistance (ESR) and S-parameter with frequency can be effectively predicted. According to the mathematical equation, the value of each component for the $1\text{-}\pi$ equivalent circuit model can be quickly and correctly obtained. In order to effectively improve the prediction accuracy and convergence speed of neural network, Particle Swarm Optimization (PSO) and Levenberg-Marquardt Back Propagation (LMBP) are used to select and optimize the weights and thresholds of the neural networks. Compared with the traditional neural network model, the proposed SMNN reduces the number of neurons required to map the input-output nonlinear relationship, so that the modeling time is only reduced to $10 \sim 15$ seconds, and the test data accuracy is good.

关键词： Resistance Accuracy Capacitors Predictive models Prediction algorithms System-on-chip Scattering parameters Integrated circuit modeling Biological neural networks Equivalent circuits

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Wideband Conformal Antenna Integrated with Lens for Implantable Capsule System 4

Wideband Conformal Antenna Integrated with Lens for Implanta...

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4th International Applied Computational Electromagnetics Society Symposium in China, ACES-China 2021

作者： Xu, Li-Jie Ma, Zhen-Yu Wu, Zhe National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781733509619

This paper presents a conformal antenna integrated with lens for wireless capsule endoscopy applications. Flexible and biocompatible material polyimide is used as capsule wall for human safety issues. To save the inner space of capsule, the proposed antenna is placed inside the capsule, with its radiation patch attached to the capsule cap in conformal form. Besides, the radiation patch is designed in bowtie shape, with one arm shorted to the ground and the other arm fed by coaxial cable. In this way, quarter wavelength resonance is realized with wide bandwidth. Additionally, to meet the application requirement, a hemispherical lens is taken into consideration and placed in capsule cap below the antenna patch. Finally, the simulation result shows that a wide bandwidth of 97.9% can be obtained of this integrated design. © 2021 Applied Computational Electromagnetics Society (ACES).

关键词： Slot antennas

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基于预连接镍链的高应变敏感度动态可调电磁干扰屏蔽弹性体

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Science China Materials 2024年第2期67卷 629-641页

作者：卞敬周兴成周翔马林峰朱先军李建民刘淑娟赵强 College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly TechnologyNanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023China

具有动态可调电磁屏蔽性能的电磁干扰屏蔽材料备受关注,但其目前仍然存在制备复杂、厚度大、触发方式不便、调节范围窄等缺点.我们通过将尖刺镍微粒精确地分散到聚二甲基硅氧烷基体中形成预连接的链状结构,制备出了具有可开关电磁屏蔽... 详细信息

具有动态可调电磁屏蔽性能的电磁干扰屏蔽材料备受关注,但其目前仍然存在制备复杂、厚度大、触发方式不便、调节范围窄等缺点.我们通过将尖刺镍微粒精确地分散到聚二甲基硅氧烷基体中形成预连接的链状结构,制备出了具有可开关电磁屏蔽性能的弹性体材料.弹性体在机械拉伸和释放过程中表现出连续和可逆的电磁干扰屏蔽性能.原始弹性体具有良好的阻抗匹配和低介电损耗,允许大部分电磁波通过.拉伸使预连接的短链彼此接触,在内部形成大量的微尺度导电网络,显著增强了电导损耗能力,实现了较强的电磁干扰屏蔽能力.此外,我们通过无线应变传感系统验证了智能电磁干扰屏蔽弹性体的应用潜力,证明了可穿戴智能电磁干扰屏蔽精确监测人体运动的可能性.

关键词： adjustable electromagnetic interference shielding conductive elastomer electromagnetic sensing negative piezoresistivity

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A Novel Broadband Electromagnetic Transparent Structure and Its Application in Dual-Band Aperture-Shared Base Station Antenna

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IEEE Antennas and Wireless Propagation Letters 2025年

作者： Zhang, Xianyu Fan, Kuikui Yang, Dong Tan, Qingquan Yu, Weiliang Liu, Leilei Luo, Guo Qing Hangzhou Dianzi University Key Laboratory of RF Circuits and System Ministry of Education Hangzhou310018 China Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of RF Integration College of Electronic and Optical Engineering Nanjing210003 China

This letter proposes a dual-band, dual-polarization, interleaved aperture-shared base station antenna array (BSAA) based on a broadband electromagnetic transparency structure (EMTS). The interleaved layout places the lower-band (LB) antenna above the existing higher-band (HB) antenna array, realizing multi-band operation within the same radiating aperture. To achieve EM transparency (EMT) and minimize the blockage effect on the HB antennas, periodic metal strips are applied to both sides of the LB dipole. To verify the EMT characteristics, a dual-band aperture-shared BSAA covering 0.76-0.98 GHz (25.3%, |S11| 11| © 2002-2011 IEEE.

关键词： microwave antennas

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An Artificial Neuromuscular Synapse Based on a Ferroelectric Pb(Zr1-xTix)O3/SiC Floating Gate Transistor 17

An Artificial Neuromuscular Synapse Based on a Ferroelectric...

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17th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2024

作者： Liu, Yu Lin, Lin Wang, Xiang Zhong, Chengyan Guo, Junxiong Huang, Wen Guo, Yufeng College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing210023 China School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of China State Key Laboratory of Electronic Thin Films and Integrated Devices Chengdu610054 China Institute of Advanced Study School of Electronic Information and Electrical Engineering Chengdu University Chengdu610106 China

ISBN: (纸本)9798350361834

Neuromuscular junctions (NMJs) are specialized synapses that enable the efficient transduction of neural signals into muscle contractions in biological systems. Desirable artificial NMJs aim to replicate biological synaptic plasticity and high-power actuation for advanced robotics and prosthetics, but face challenges in achieving sufficient flexibility, strength, and self-contained operation. Here, we report a novel artificial NMJ based on a silicon carbide (SiC) ferroelectric field-effect transistor. By integrating a ferroelectric floating gate dielectric with a wide-bandgap SiC transistor, we achieve a wide range of non-volatile conductance modulation, enabling the emulation of long-term synaptic plasticities. We demonstrate the PZT-SiC transistor's higher threshold voltage and lower operating currents compared to traditional SiC transistors, resulting in reduced power consumption. The device exhibits excellent synaptic plasticity, with the ability to modulate synaptic weights through successive test cycles and upon pulsatile stimulation. We showcase the potential of the PZT-SiC synaptic transistor through its application in convolutional image processing, where it successfully extracts horizontal and vertical features using Sobel kernels. Our work presents a promising hardware platform for efficient and scalable artificial NMJs, paving the way for advanced biohybrid systems and neuromorphic robots. © 2024 IEEE.

关键词： Gate dielectrics

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High-Flatness and Broadband Comb Generator Chip 16

High-Flatness and Broadband Comb Generator Chip

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16th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2022

作者： Yang, Wang Qi, Qian Yufeng, Guo Yi, Zhang Nanjing Vocational University of Industry Technology Nanjing China Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of Rf Integration and Micro-Assembly Technology Nanjing China Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (数字)9781665469067

ISBN: (纸本)9781665469067

Based on the signal analysis theory, we build a system-level model to explore the correlation between the narrow pulse signal and its frequency property. Using the high frequency InP HBT devices, this paper designed a broadband comb generator chip. Compared with the traditional method, the chip gets the advantages of high flatness, low power consumption and low input power in the form of active monolithic integrated circuit. Simulation results show that this comb generator can cover 0.1GHz~30GHz frequency band, with amplitude flatness under 12.1dBc and power consumption less than 0.5W. © 2022 IEEE.

关键词： Monolithic integrated circuits

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A 3D Crystal plasticity finite element model for a 3D package under drop impact

A 3D Crystal plasticity finite element model for a 3D packag...

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Shijiao Liu Yujie Cheng Linhai Gan Shanwen Hu Zhikuang Cai Lu Liu The College of International Circuit Science and Engineering National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology Nanjing University of Posts and Telecommunications Nanjing China

As one of the most vulnerable positions in the microelectronic package structure, the defect of the solder joint may result in the breakdown of the entire electronic package. Researching the deformation behavior of solder joints in various kinds of loads is significant. The micron-sized solder joints may only contain one or several grains, the traditional macroscopic phenomenology constitutive model cannot reasonably reflect the grain deformation caused by crystalline sliding. A 3D crystal plastic finite element (CPFE) model of 40 Oriented Grains is set up to study the deformation behavior of Sn-3.0Ag-0.5Cu (SAC305) at various strain rates of 1%s -1 , 0.1s -1 , 0.01%s -1 and different temperatures of 298K, 348K, and 398K. Using the Crystal Plasticity Theory, the deformation behavior of every grain, and the mean stress and strain relation of the structure is achieved by means of homogenization. The model is used to simulate monoaxial tension testing of SAC305 solders under various strain rates of 1%s -1 , 0.1s -1 , and 0.01%s -1 , and different temperatures of 298K, 348K, and 398K. Based on the stress and strain relation of experiment data, the relative parameters of the model were adjusted. The results show that the Proper Precision of the SAC305 solder joints under various loading conditions can be used to describe the stress and strain behavior. On this basis, a 3D package finite element model with two chips is established to calculate the stress and non-elastic strain under the impact of dropping, and the sub-model analysis of solder joints in the package is carried out by using the constitutive model and a study was made on the deformed state of the solder joints. By analyzing the influence of different dropping heights (1m, 10m, 20m) and dropping gestures (face-down, right-side-up, and vertical-fall) on the deformation of the electronic package structure, the most vulnerable position of the package structure can be found out, which can provide suggestions for

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A Review of Intelligent Design for Test Based on Machine Learning

A Review of Intelligent Design for Test Based on Machine Lea...

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Electronics Design Automation (ISEDA), International Symposium of

作者： Zeyu Zhao Zhikuang Cai National and Local Joint Engineering Laboratory of RF Integration and Micro-assembly Technology College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications Nanjing China

In recent years, with the development of post-Moore era, integrated circuit architecture is complex and test cost is increasing. How to apply efficient, reliable, fast and sustainable ideas to integrated circuit design has become a research hotspot in this field. Machine Learning, by virtue of its ability to quickly process abundant data information, shines in the field of Design For Test, which aims to improve the reliability of integrated circuit products and reduce design costs. In this paper, we introduce the application of Machine Learning in scan compression, Automatic Test Pattern Generation algorithm, the Test Pattern Generator in Built-In-Self- Test and test power. In addition, we prospect the foreground application of Machine Learning application in scan test, Automatic Test Pattern Generation, Built-In-Self- Test and test power.

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Oxygen vacancies modulating self-powered photoresponse in PEDOT:PSS/ε-Ga_(2)O_(3)heterojunction by trapping effect

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Science China(Technological Sciences) 2022年第3期65卷 704-712页

作者： LI Shan YUE JianYing LU Chao YAN ZuYong LIU Zeng LI PeiGang GUO DaoYou WU ZhenPing GUO YuFeng TANG WeiHua Laboratory of Information Functional Materials and Devices School of ScienceState Key Laboratory of Information Photonics and Optical CommunicationsBeijing University of Posts and TelecommunicationsBeijing 100876China College of Electronic and Optical Engineering&College of Microelectronics National and Local Joint Engineering Laboratory for RF Integration and Micro-Packaging TechnologiesNanjing University of Posts and TelecommunicationsNanjing 210023China Center for Optoelectronics Materials and Devices&Key Laboratory of Optical Field Manipulation of Zhejiang Province Department of PhysicsZhejiang Sci-Tech UniversityHangzhou 310018China

Can the modulation effect of charge-carrier transfer be inherited from a single layer to its heterojunction structure?Certainly,the answer is ***,we experimentally verify that the photodetection performance modulation effect of oxygen vacancy(Vo)is transmitted from theε-Ga_(2)O_(3)layer to the PEDOT:PSS/ε-Ga_(2)O_(3)(PGO)hybrid *** adopting the annealedε-Ga_(2)O_(3)films,whose Voconcentrations are remolded by annealing ambients,the constructed PGO photodetectors(PDs)demonstrate regulable self-powered *** the V_(o)defects decrease,the photodetection properties are effectively enhanced with a high photo-to-dark current ratio of 2.37×10^(7),an excellent on/off switching ratio of 6.45×10^(5),fast rise/decay time of 121/72 ms,a large responsivity of 67.9 m A/W,superior detectivity of 9.2×10^(13)Jones,an outstanding external quantum efficiency of 33.2%,and a high rejection ratio(R_(250)/R_(400))of 5.96×10^(6)at 0 V in PGO-O;*** better photoresponse is attributed to the less V_(o)defect concentration in theε-Ga_(2)O_(3)layer,which could favor the lower electron-trapping probability and a more efficient charge-carrier *** the universality of V_(o)defects in oxide materials,the proposed regulation strategy of photoresponse will open the route of high self-powered performance for next-generation ultraviolet PDs.

关键词： oxygen vacancy self-powered photodetector heterojunction PEDOT:PSS/ε-Ga2O3

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