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3rd International Conference on Electronic Information Engineering, Big Data, and Computer Technology, EIBDCT 2024

作者： Junjie, Tang Wenkai, Jin Haochuan, Wang Hanqing, Zhang Hui, Hong Key Laboratory of Radio Frequency Circuit and System Hangzhou Dianzi University Hangzhou310018 China

ISBN: (纸本)9781510680449

In order to improve the size, weight and data transmission of implantable brain-computer interfaces, a miniaturized wireless and passive brain-computer interface system with enhanced bandwidth is proposed. A critical packet response mechanism for high data throughput is established, and a breakthrough in the rate limitation of the original Enhanced Shockburst protocol is realized. The maximum bandwidth of the system can reach 1.68 Mbps, which is a 20% improvement compare to other systems. The system adopts micro-assembly techniques and the integration of lightweight, compact analog and digital circuits to create a miniaturized implantable device, which is only 12.7 × 12.5 × 2.1 mm3 and weighs about 0.44 g. Additionally, the system employs magnetic resonance coupling technology for wireless energy transfer. Finally, the test results show the system successfully generates electrical stimulation pulses and captures analog electrical signals, and it will be available for practical use. It provides an improved solution for future research and application in the field of fully implantable brain-computer interface. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Brain computer interface

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High-Side PMOS Driving Half-Bridge Driver with a Higher Turn-Off Rate 5

High-Side PMOS Driving Half-Bridge Driver with a Higher Turn...

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5th International Conference on circuits and systems, ICCS 2023

作者： Zhao, Yong-Rui Shi, Xiang Zhang, Hao Tan, Xiao-Yan North-China Integrated Circuit Design CO. Ltd The 13th Research Institute Cetc Hebei Key Laboratory of Radio Frequency Integrated Circuit for Mobile Communication Shijiazhuang China

ISBN: (纸本)9798350308273

The traditional High-Side PMOS driving bridge driver exhibits a fast turn-on and slow turn-off phenomenon when driving the external high-side PMOS, which eventually causes the output pulse to broaden. This phenomenon occurs because of the characteristics of the PMOS, turning off slower than turning on. To solve the above problem, a new method is proposed to enhance the voltage difference of the PMOS by raising the turn-off voltage, which is far beyond the turn-off threshold of the PMOS, so the PMOS can be turn-off quickly. A High-Side PMOS driving half-bridge driver IC is designed and fabricated by using a 0.18 μ m BCD chip process flow. The application of the IC as a test board is also fabricated. The verification results show that the pulse width of the signal varies by only 5.5 ns. © 2023 IEEE.

关键词： Integrated circuits

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A compact 9–23 GHz low noise amplifier with bandwidth extension techniques in 0.18-μm SiGe BiCMOS

A compact 9–23 GHz low noise amplifier with bandwidth exten...

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作者： Luo, Jiang Chen, Pengwei The Key Laboratory of RF Circuit and System Ministry of Education Hangzhou Dianzi University Hangzhou China State Key Laboratory of Millimeter Waves Southeast University Nanjing China Beijing Institute of Radio Measurement Beijing China

In this paper, a novel wideband low noise amplifier (LNA) operating in the 9–23 GHz frequency range is presented. The proposed LNA design utilizes a combination technique consisting of pole-tuning technique, shunt resistive-capacitor negative feedback, and gate-capacitive peaking technique to achieve significant bandwidth extension while maintaining acceptable overall performance. For verification, a one-stage triple-stacked LNA using the combination technique is designed and implemented in a 0.18-μm SiGe BiCMOS heterojunction bipolar transistor (HBT) process. The fabricated prototype demonstrates a peak gain of 13.8 dB at 19.5 GHz, minimum noise figure of 3.1 dB at 14 GHz, 3-dB bandwidth of 14 GHz, and a fractional bandwidth of 87.5%, while consuming a dc power of 39.6 mW. Moreover, the chip occupies a small silicon area of 0.39 mm2 including all testing pads with a core size of only 0.192 mm2. © 2023 John Wiley & Sons Ltd.

关键词： Low noise amplifiers

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Optical mode enabled manipulation of topological phase in waveguide-based scattering networks

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Physical Review B 2024年第7期110卷 075424-075424页

作者： Changyu Zhou Zhenwei Xie Ting Lei Yao Zhang Qinmiao Chen Xiaocong Yuan Nanophotonics Research Center Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous Integration State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System

In a topological system with an edge, the number of edge states is typically determined by the bulk topological invariant, as per the well-established bulk-boundary correspondence. However, anomalous topological edge states can arise in periodically driven Floquet systems even when the bulk Chern number is zero. A topological invariant (winding number) has been introduced to establish the appropriate bulk-boundary correspondence in such systems. Nevertheless, manipulating the topological properties of systems, whether static or driven, remains a significant challenge. In photonic systems, optical fields with diverse inherent dimensions such as frequency and polarization offer a natural avenue for topological-phase manipulation. In this paper, we present an alternative scheme for switching the topological invariant (winding number) of the system by changing the optical-waveguide mode within an integrated waveguide-based scattering network. With creating a bonding interface, this topological-phase switching facilitates the transmissions of the interface state in different directions. Experimental validation of this concept is demonstrated using a ring-optical-waveguide device. In this paper, we introduce an alternative strategy for tailoring the topological properties of optical systems.

关键词： Nanophotonics Topological effects in photonic systems Topological phase transition Waveguides

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High-Side PMOS Driving Half-Bridge Driver with a Higher Turn-Off Rate

High-Side PMOS Driving Half-Bridge Driver with a Higher Turn...

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IEEE International Conference on circuits and systems (ICCS)

作者： Yong-Rui Zhao Xiang Shi Hao Zhang Xiao-Yan Tan Hebei Key Laboratory of Radio Frequency Integrated Circuit for Mobile Communication North-China Integrated Circuit Design CO. Ltd The 13th research institute CETC Shijiazhuang P. R. China

The traditional High-Side PMOS driving bridge driver exhibits a fast turn-on and slow turn-off phenomenon when driving the external high-side PMOS, which eventually causes the output pulse to broaden. This phenomenon occurs because of the characteristics of the PMOS, turning off slower than turning on. To solve the above problem, a new method is proposed to enhance the voltage difference of the PMOS by raising the turn-off voltage, which is far beyond the turn-off threshold of the PMOS, so the PMOS can be turn-off quickly. A High-Side PMOS driving half-bridge driver IC is designed and fabricated by using a $\mathbf{0.18}\ \mu\ \mathbf{m}$ BCD chip process flow. The application of the IC as a test board is also fabricated. The verification results show that the pulse width of the signal varies by only 5.5 ns.

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17-40GHz Ultra-Wideband Power Amplifier MMICs

17-40GHz Ultra-Wideband Power Amplifier MMICs

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International Conference on Microwave and Millimeter Wave Technology Proceedings

作者： Li Zhang Xuefeng Zheng Pengbo Du Long Zhao Hanbin Qu State Key Laboratory of Wide Bandgap Semiconductor Devices and Integrated Technology School of Microelectronics Xidian University Xi'an China North-China Integrated Circuit Co. Ltd Shijiazhuang China The 13th Research Institute CETC Shijiazhuang China Hebei Satellite Communication Radio Frequency Technology Innovation Center Shijiazhuang China Shijiazhuang Research Center for Radio Frequency Integrated Circuit Engineering Technology China

ISBN: (数字)9798350389968

ISBN: (纸本)9798350389975

In this letter., two 17–40 GHz ultra-wideband power amplifiers (P A) Monolithic Microwave Integrated circuit (MMIC) are proposed using GaN-SiC technology. The first is a single-way three-stage P A., and the second one adds Lange- couplers as a balanced typology to improve the input/output return loss. On wafer measurement results show that the single-wayc> P A displays a minimum small signal gain S21 of 24 dB., power-added efficiency (PAE) of 21 %-31 %., and the saturated output power (Psat) of 31 $\text{dBm}(1.2\mathrm{W})$ at a drain voltage of 15V. The balanced P A produces a Psat of 35 $\text{dBm}(3.1\mathrm{W})$ at 40 GHz with a PAE of 22%. These performances were possibly attributed to the excellent GaN HEMT technology as well as the circuit design and optimization. This work provides complete technical support and solutions for ultra-wideband millimeter-wave PAs.

关键词： Voltage measurement Power measurement Power amplifiers Microwave circuits Microwave amplifiers Microwave FET integrated circuits Power generation

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An Energy-Efficient Beam Hopping Strategy in Interference Coexistence Satellite systems

An Energy-Efficient Beam Hopping Strategy in Interference Co...

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IEEE International Conference on Communications in China Workshops (ICCC)

作者： Hao Sun Wenpeng Jing Zhaoming Lu Xiangming Wen Wei Li Beijing Key Laboratory of Network System Architecture and Convergence Beijing Laboratory of Advanced Information Networks Beijing University of Posts and Telecommunications Beijing China Satellite Frequency and Orbit Resource Research Center The State Radio Monitoring Center Beijing China

ISBN: (数字)9798350377675

ISBN: (纸本)9798350377682

While beam hopping (BH) has revolutionized satel-lite communication by addressing non-uniform traffic demands and minimizing beam interference, existing research on multi-satellite BH scenarios often overlooks energy efficiency (EE) optimization. This can lead to increased operational costs and reduced satellite lifespans due to higher onboard energy consumption. In this paper, we propose a novel energy-efficient beam hopping strategy in the coexistence scenario of geosynchronous orbit (GSO) and non-geosynchronous orbit (NGSO) satellite systems. Specifically, the proposed strategy can both balance traffic load among NGSO satellites and avoid interference to GSO ground stations. A joint multi-satellite BH optimization problem is formulated to optimize a trade-off function between quality of service (QoS) and EE for the NGSO system. Then, the original problem is divided into the satellite-cell assignment, BH pattern design, and beam power allocation sub-problems and solved sequentially. The numerical results demonstrate the superiority of the proposed strategy in enhancing the QoS and EE of the NGSO system while effectively mitigating interference with the GSO system.

关键词： Energy consumption Satellites Interference Quality of service Telecommunication traffic Energy efficiency Orbits Resource management Optimization Satellite communications

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A Rapid Adaptation Approach for Dynamic Air‑Writing Recognition Using Wearable Wristbands with Self‑Supervised Contrastive Learning

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Nano-Micro Letters 2025年第2期17卷 417-431页

作者： Yunjian Guo Kunpeng Li Wei Yue Nam‑Young Kim Yang Li Guozhen Shen Jong‑Chul Lee Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897South Korea Radio Frequency Integrated Circuit(RFIC)Bio Centre Kwangwoon UniversitySeoul 01897South Korea Department of Electronic Engineering Kwangwoon UniversitySeoul 01897South Korea School of Microelectronics Shandong UniversityJinan 250101People’s Republic of China State Key Laboratory of Integrated Chips and Systems Fudan UniversityShanghai 200433People’s Republic of China School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081People’s Republic of China

Wearable wristband systems leverage deep learning to revolutionize hand gesture recognition in daily *** existing approaches that often focus on static gestures and require extensive labeled data,the proposed wearable wristband with selfsupervised contrastive learning excels at dynamic motion tracking and adapts rapidly across multiple *** features a four-channel sensing array composed of an ionic hydrogel with hierarchical microcone structures and ultrathin flexible electrodes,resulting in high-sensitivity capacitance *** wireless transmission from a Wi-Fi module,the proposed algorithm learns latent features from the unlabeled signals of random wrist ***,only few-shot labeled data are sufficient for fine-tuning the model,enabling rapid adaptation to various *** system achieves a high accuracy of 94.9%in different scenarios,including the prediction of eight-direction commands,and air-writing of all numbers and *** proposed method facilitates smooth transitions between multiple tasks without the need for modifying the structure or undergoing extensive task-specific *** utility has been further extended to enhance human–machine interaction over digital platforms,such as game controls,calculators,and three-language login systems,offering users a natural and intuitive way of communication.

关键词： Wearable wristband Self-supervised contrastive learning Dynamic gesture Air-writing Human-machine interaction

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Enhancing key Performance of Vertical GaN Schottky Barrier Diodes Through AlOxInsertion and Dual Ion Co-Implantation

Enhancing Key Performance of Vertical GaN Schottky Barrier D...

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International Symposium on Power Semiconductor Devices and Ics (ISPSD)

作者： Bo Li Zhengweng Ma Linfei Gao Junfa Mao Wenrong Zhuang Quanchun Li Bo Zhang Renqiang Zhu Jingbo Li Xinke Liu College of Materials Science and Engineering College of Electronics and Information Engineering Shenzhen University Shenzhen China State Key Laboratory-of Radio Frequency Heterogeneous Integration Shenzhen University Shenzhen China Dongguan Sino Nitride Semiconductor Co. Ltd Dongguan China Red and Blue Microelectronics Co. Ltd Shanghai China School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of China Chengdu China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China College of Optical Science and Engineering Zhejiang University Hangzhou China

ISBN: (数字)9798350394825

ISBN: (纸本)9798350394832

The main challenges in current vertical GaN diodes involve electric field crowding effects and ohmic contacts on the nitrogen face (N-Face). Extensive prior research has been conducted in these areas. In this study, we introduced a novel dual-ion (carbon and helium) co-implantation edge termination (ET), aiming to enhance the breakdown voltage $(V_{\text{BR}})$ capability of vertical GaN Schottky barrier diodes (SBDs). Furthermore, atomic layer deposition (ALD) was applied on the N-face to deposit a 1.2 nm aluminum oxide $(\text{AlO}_{x})$ layer, effectively reducing the contact resistance of the ohmic contacts $(\rho_{\mathrm{c}})$ . The fabricated devices exhibit a low turn-on voltage $V_{\text{on}}$ of 0.56 V and a high $I_{\text{on}}/I_{\text{off}}$ of $\sim 10^{9}$ . The introduction of $\text{AlO}_{x}$ mitigates the Fermi-level pinning effect (FLP), reducing the device resistance $R_{\text{on},\text{sp}}$ from 3.01 $\mathrm{m}\Omega\cdot \text{cm}^{2}$ to 1.34 $\mathrm{m}\Omega\cdot \text{cm}^{2}$ . Moreover, the dual-ion co-implantation ET enables the devices to achieve a maximum $V$ BR of 1410 V, resulting in a high figure of merit (FOM) of 1.48 GW/cm 2 .

关键词： Resistance Performance evaluation Schottky diodes Fermi level Schottky barriers Ions Ohmic contacts

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An HSR Data Model for Cyborg Insect Research Experiments

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Chinese Journal of Electronics 2018年第4期27卷 680-686页

作者： HONG Hui WANG Xiaoyu ZHU Zhengfei MA Qian GUAN Nan ZHENG Nenggan Key Laboratory of Radio Frequency Circuit and System Hangzhou Dianzi University Qiushi Academy for Advanced Studies Zhejiang University College of Computer Science and Technology Zhejiang University Department of Computing Hong Kong Polytechnic University

Research on cyborg intelligent insects requires the experiment platform to collect data from the distributed sensing models and process the multi-modal signals in real-time. To overcome these issues, we present a novel data model, naming as the Hybrid-synchronizedrealtime(HSR) data model, which can synchronize the hybrid raw data channels by a meta data integration method and process them with a fixed priority scheduling algorithm. Real animal experiments show that the insect-machine experiment platform based on the HSR data model can fully satisfy the requirements of cyborg intelligent insect research, especially in dealing with the technical challenges of data synchronization, real-time processing and hybrid data integration. It provides an efficient approach to implement the experiment platform and thus aid the frontier research on cyborg insects.

关键词： Cyborg intelligent insects Data model Hybrid-synchronized-realtime(HSR)

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