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50-110 GHz,high isolation,and high-power linearity single-pole double-throw Switch utilizing 100-nm GaN HEMT technology

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The Journal of China Universities of Posts and Telecommunications 2024年第2期31卷 38-43,71页

作者： Han Qunfei Hu Sanming Zhang Tianyu Chen Qing Shen Yizhu Wang Weibo Tao Hongqi School of Information Science and Engineering Southeast UniversityNanjing 210096China Nanjing Electronic Devices Institute Nanjing 210016China State Key Laboratory of Millimeter Waves Southeast UniversityNanjing 210096China

This article presents the design and performance of a single-pole double-throw(SPDT)Switch operating in 50-110 GHz.The Switch is fabricated in a 100-nm GaN high-electron-mobility transistors(HEMT)technology.To realize high-power capability,the dimensions of GaN HEMTs are selected by simulation verification.To enhance the isolation,an improved structure of shunt HEMT with two ground holes is employed.To extend the operation bandwidth,the SPDT Switch with multi-section resonant units is proposed and analyzed.To verify the SPDT Switch design,a prototype operating in 50-110 GHz is fabricated.The measured results show that the fabricated SPDT Switch monolithic microwave integrated circuit(MMIC)achieves an input 1 dB compression point(P_(1dB))of 38 dBm at 94 GHz,and isolation within the range of 33 dB to 54 dB in 50-110 GHz.The insertion loss of the Switch is less than 2.1 dB,while the voltage standing wave ratios(VSWR)of the input port and output port are both less than 1.8 in the operation bandwidth.Based on the measured results,the presented SPDT Switch MMIC demonstrates high power capability and high isolation compared with other reported millimeter-wave SPDT MMIC designs.

关键词： GaN high-electron-mobility transistors(HEMT) millimeter-wave single-pole double-throw(SPDT) Switch

The nonlocal transport and Switch effect in light-and electric-controlled silicene–superconductor hybrid structure

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Chinese Physics B 2018年第12期27卷 121-126页

作者：戚凤华曹军曹杰张力发 Center for Quantum Transport and Thermal Energy Science School of Physics and TechnologyNanjing Normal UniversityNanjing 210023China School of Electronic Engineering Nanjing Xiaozhuang UniversityNanjing 211171China College of Science Hohai UniversityNanjing 210098China

We theoretically investigate the influence of off-resonant circularly polarized light field and perpendicular electric field on the quantum transport in a monolayer silicene-based normal/superconducting/normal junction.Owing to the tunable band structure of silicene,a pure crossed Andreev reflection process can be realized under the optical and electrical coaction.Moreover,a Switch effect among the exclusive crossed Andreev reflection,the exclusive elastic cotunneling and the exclusive Andreev reflection,where the former two are the nonlocal transports and the third one is the local transport,can be obtained in our system by the modulation of the electric and light fields.In addition,the influence of the relevant parameters on the nonlocal and local transports is calculated and analyzed as well.

关键词： Switch effect silicene crossed Andreev reflection

Iron regulatory protein 1: the deadly Switch of ferroptosis

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Neural Regeneration Research 2024年第3期19卷 477-478页

作者： Daniel A.Bórquez Pamela J.Urrutia Center for Biomedical Research Faculty of MedicineUniversidad Diego PortalesSantiagoChile Institute of Nutrition&Food Technology(INTA) Universidad de ChileSantiagoChile Geroscience Center for Brain Health and Metabolism SantiagoChile

Ferroptosis,an iron-dependent cell death:Ferroptosis is a type of regulated necrosis,characterized by redox-active iron accumulation and increased free radical production derived by Fenton chemistry,that triggers oxidation of polyunsaturated fatty acids in phospholipids,loss of cellular membranes integrity,and leakage of intracellular contents.

关键词： integrity Switch Iron

Conjugated polymer nanoparticles as fluorescence Switch for selective cell imaging

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Chinese Chemical Letters 2020年第3期31卷 755-758页

作者： Ke Peng Fengting Lv Huan Lu Jianwu Wang Hao Zhao Libing Liu Shu Wang Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China College of Chemistry University of Chinese Academy of SciencesBeijing 100049China

Fluorescence Switch plays a vital role in bioelectronics and bioimaging.Herein,we presented a new kind of facile electrostatic complex nanoparticles(ECNs)for fluorescence Switching in cells and marking of individual cell.The ECNs were prepared by mixing positively charged poly(6-(2-(thiophen-3-yl)ethoxy)hexyl trimethylammonium bromide)(PT)and negatively charged diarylethene sodium salt(DAECOONa).DAE-COONa is a photoSwitchable molecule which can be transformed between the ring-closed fo rm and ring-open form under the irradiation of UV or visible light.The closed-form of DAE-COONa can efficie ntly quench the fluorescence of PT through intermolecular energy transfer,while the open form of DAE-COONa does not influence the emission of PT.Thus,the fluorescence of ECNs can be modulated by light irradiation,and the ECNs with good fluorescence Switching performance have been employed for fluorescence imaging and individual cell lighting up process successfully.We demonstrate that the electrostatic complex strategy provides a facile method to construct fluorescence Switch fo r selective cell marking and imaging applications.

关键词： Electrostatic complex nanoparticles Conjugated polymers Fluorescence Switch Cell imaging Selective cell lighting up

A Virtual Machine Scheduling Strategy with a Speed Switch and a Multi-Sleep Mode in Cloud Data Centers

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Journal of Systems Science and Systems Engineering 2019年第2期28卷 194-210页

作者： Shunfu Jin Shanshan Hao Xiuchen Qie Wuyi Yue School of Information Science and Engineering Yanshan University Qinhuangdao China Department of InteDigence and Informatics Konan University Kobe Japan

With the rapid growth of energy costs and the constant promotion of environmental standards, energy consumption has become a significant expenditure for the operating and maintaining of a cloud data center. Io improve the energy efficiency of cloud data centers, in this paper, we propose a Virtual Machine (VM) scheduling strategy with a speed Switch and a multi-sleep mode. In accordance with the current traffic loads, a proportion of VMs operate at a low speed or a high speed, while the remaining VMs either sleep or operate at a high speed. Commensurate with our proposal, we develop a continuous-time queueing model with an adaptive service rate and a partial synchronous vacation. We construct a two dimensional Markov chain based on the total number of requests in the system and the state of all the VMs. Using a matrix geometric solution, we mathematically estimate the energy saving level and the response performance of the system. Numerical experiments with analysis and simulation show that our proposed VM scheduling strategy can effectively reduce the energy consumption without significant degradation in response performance. Additionally;we establish a system utility function to trade off the different performance measures. In order to determine the optimal sleep parameter and the maximum system utility function, we develop an improved Firefly intelligent searching Algorithm.

关键词： Cloud data center virtual machine scheduling speed Switch multi-sleep matrix geometricSolution utility function improved Firefly Algorithm

Sandman is a Sleep Switch in Drosophila

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Neuroscience Bulletin 2016年第5期32卷 503-504页

作者： Yufeng Pan Institute of Life Sciences Southeast University Nanjing 210096 China

Sleep is a universal process with vital functions.Animals deprived of sleep for a long period of time will die.Despite its crucial functions,fundamental questions about sleep remain unexplored.For instance,why do animals sleep since it disconnects animals from the external world and exposes them to danger(we really do not know!)?What is the Switch between sleep and waking,if there is one(we may be beginning to understand this!)?

关键词： instance Drosophila Switch universal vital danger really beginning homeostasis questions

High-performance RF Switch in 0.13 μm RF SOI process

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Journal of Semiconductors 2019年第2期40卷 25-28页

作者： Hong Guan Hao Sun Junlin Bao Zhipeng Wang Shuguang Zhou Hongwei Zhu School of Microelectronics Xidian University Semiconductor Manufacturing International Corporation

A high-performance single-pole single-throw(SPST) RF Switch for mobile phone RF front-end modules(FEMs) was designed and characterized in a 0.13 μm partially depleted silicon-on-insulator(PD SOI) process. In this paper, the traditional seriesshunt configuration design was improved by introducing a suitably large DC bias resistor and leakage-preventing PMOS, together with the floating body technique. The performance of the RF Switch is greatly improved. Furthermore, a new Ron × Coff testing method is also proposed. The size of this SPST RF Switch is 0.2 mm2. This Switch can be widely used for present 4 G and forthcoming 5 G mobile phone FEMs.

关键词： RF Switch SOI insertion loss isolation linearity

Electric-controlled tunable thermal Switch based on Janus monolayer MoSSe

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npj Computational Materials 2022年第1期8卷 2483-2489页

作者： Donghai Wei E Zhou Xiong Zheng Huimin Wang Chen Shen Hongbin Zhang Zhenzhen Qin Guangzhao Qin State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University410082ChangshaP.R.China Hunan Key Laboratory for Micro-Nano Energy Materials&Device and School of Physics and Optoelectronics Xiangtan University411105XiangtanHunanChina Institute of Materials Science Technical University of DarmstadtAlarich-Weiss-Str.264287DarmstadtGermany School of Physics and Microelectronics Zhengzhou University450001ZhengzhouChina

The high-performance,wide-range tunable thermal Switches play a significant role in the thermal management,high-power-density intelligent devices,energy systems,etc.However,traditional thermal Switch components,such as thermal diodes,suffer from poor stability,small adjustability,low time efficiency,and difficult implementation.Herein,we propose the superior electric-controlled thermal Switch(ECTS)based on Janus monolayer MoSSe.The high-effective and asymmetric regulation of the thermal conductivity driven by electric field demonstrates a wide-range adjustable thermal Switch ratio,where the peak value reaches 2.09 under the electric field of 0.04 VÅ^(−1).The underlying mechanism is revealed by electronic structures that the interactions between electrons and phonons are renormalized due to the electric field driving charge density redistribution,which ultimately modulates the phonon anharmonicity.The high-efficiency adjustable ECTS component is expected to provide new inspiration for next-generation thermal management and information processing.

关键词： tunable thermal Switch

An 8-bit 100-MS/s digital-to-skew converter embedded Switch with a 200-ps range for time-interleaved sampling

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Journal of Semiconductors 2013年第3期34卷 76-80页

作者：朱晓石陈迟晓徐佳靓叶凡任俊彦 State Key Laboratory of ASIC & System Fudan University Microelectronics Science and Technology Innovation Platform Fudan University

A sampling Switch with an embedded digital-to-skew converter （DSC） is presented. The proposed Switch eliminates time-interleaved ADCs＇ skews by adjusting the boosted voltage. A similar bridged capacitors＇ charge sharing structure is used to minimize the area. The circuit is fabricated in a 0.18 μm CMOS process and achieves sub-1 ps resolution and 200 ps timing range at a rate of 100 MS/s. The power consumption is 430 μW at maximum. The measurement result also includes a 2-channel 14-bit 100 MS/s time-interleaved ADCs （TI-ADCs） with the proposed DSC Switch＇s demonstration. This scheme is widely applicable for the clock skew and aperture error calibration demanded in TI-ADCs and SHA-less ADCs.

关键词： sample-time error digital-to-skew converter bootstrapped Switch calibration time-interleaved