Yushan Li

ORCID: 0000-0002-9785-4752
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About
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Research Areas
  • Electromagnetic Compatibility and Noise Suppression
  • Advanced Antenna and Metasurface Technologies
  • Electrostatic Discharge in Electronics
  • Power Line Communications and Noise
  • Lightning and Electromagnetic Phenomena
  • 3D IC and TSV technologies
  • Advancements in PLL and VCO Technologies
  • Microwave Engineering and Waveguides
  • Integrated Circuits and Semiconductor Failure Analysis
  • Semiconductor materials and devices
  • Electromagnetic Compatibility and Measurements
  • Image and Video Stabilization
  • Radio Frequency Integrated Circuit Design
  • Thin-Film Transistor Technologies
  • Image Processing Techniques and Applications
  • ZnO doping and properties
  • Low-power high-performance VLSI design
  • Optical measurement and interference techniques
  • Photonic and Optical Devices
  • Fractional Differential Equations Solutions
  • Advanced Memory and Neural Computing
  • Banking stability, regulation, efficiency
  • Video Surveillance and Tracking Methods
  • Advanced Measurement and Detection Methods
  • Engineering and Test Systems

Xidian University
2012-2025

South China Normal University
2021-2024

Nanjing University of Posts and Telecommunications
2023

University of Electronic Science and Technology of China
2019-2023

Guilin University of Electronic Technology
2023

China Jiliang University
2023

University of Washington
2023

Seattle University
2023

Tianjin Normal University
2023

Yunnan University
2023

The development of Financial Technology (FinTech) in areas such as mobile Internet, cloud computing, big data, search engines, and blockchain technology have significantly changed the financial industry. FinTech is expected to overturn traditional banking business model, forcing banks upgrade transform. This study adopts a comparative case method contrast analyze Industrial Commercial Bank China (ICBC) Citibank. It analyzes strategies, organizations, HR systems, product innovations adopted...

10.1186/s40854-017-0062-0 article EN cc-by Financial Innovation 2017-07-24

We report on high performance and hysteresis-free amorphous indium-gallium-zinc oxide (a-IGZO) thin film transistors (TFTs) employing a low temperature (200 °C) spin-coated hafnium (HfO <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{{2}}{)}$ </tex-math></inline-formula> gate dielectric. An oxygen-doped precursor solution method (ODS) was proposed to improve the dielectric properties of these films,...

10.1109/led.2023.3295594 article EN IEEE Electron Device Letters 2023-07-14

In this letter, a power plane with wideband simultaneous switching noise (SSN) suppression using novel multi-via electromagnetic bandgap (EBG) structure is proposed. The -40dB stopband of the proposed EBG about two to six times wider than one-via structure, and relative bandwidth increased by times. It implemented only adding some vias between patches reference without changing any other geometrical parameters from structures. excellent SSN performance was verified simulations measurements

10.1109/lmwc.2007.892992 article EN IEEE Microwave and Wireless Components Letters 2007-04-01

The power shortages directly affect the production behavior of firms. study utilizes a city-specific index shortage and comprehensive database listed firms in China to investigate correlation between firm CO 2 emissions. Empirical results indicate significant positive relationship emissions, alongside noted decline extent technological innovation among negative impact on their resource allocation. Further analysis shows that significantly contributes emissions non-state-owned firms,...

10.3389/fenvs.2025.1590025 article EN cc-by Frontiers in Environmental Science 2025-04-22

The standard PCA algorithm has two mainly disadvantages: one is computing complexity, other it can only process the faces have same face expression. In order to solve these problems, a new recognition method called SPCA( Statistical Principal Component Analysis Method) proposed in this paper. First, an improved used compute eigen-vector and eigen-values of face. Second, Bayesian rule design classification designer. experimental result shows that introduced paper advantages simple computation...

10.1109/iita.2008.71 article EN 2008-12-01

Supply fluctuation is one of the most significant factors that cause jitter in high-speed I/O links. The traditional SPICE simulation or measuring method for power supply induced quite time-consuming and draining on resources. buffer information specification (IBIS) model a popular standard electronic behavioral specifications digital integrated circuit characteristics. Analytic transfer functions fluctuations are derived by solving two-order differential equations based IBIS current versus...

10.1109/temc.2017.2725270 article EN IEEE Transactions on Electromagnetic Compatibility 2017-07-21

In this letter, a double-surface electromagnetic bandgap (EBG) structure with one EBG surface embedded in power plane is proposed for ultra-wideband simultaneous switching noise (SSN) suppression printed circuit boards. The SSN bandwidth broadened to wider than 30 GHz low start frequency by combining traditional and the coplanar which plane. Because plane, no additional metal layer introduced structure. Simulations measurements are performed verify broadband suppression, high performance observed.

10.1109/lmwc.2007.905601 article EN IEEE Microwave and Wireless Components Letters 2007-10-01

There is a recognized need to evaluate the performance of high-speed links accurately and quickly with increasing clock frequency. To systems, transient simulation method fast time-domain are adopted. Unfortunately, neither can guarantee both efficiency accuracy results at same time. In this article, modeling that overcome shortcomings proposed for obtaining responses based on bidirectional long short-term memory (Bi-LSTM). Here, pulse response certain number bits first simulated or...

10.1109/tmtt.2022.3233303 article EN IEEE Transactions on Microwave Theory and Techniques 2023-01-06

In this paper, a deep bandgap behavior analysis of the vertical cascaded electromagnetic-bandgap (EBG) structure is made. It shown that EBG can be decomposed into two structures horizontally, one with bigger patches and other smaller patches. The design guidelines are drawn. Furthermore, cascade concept extended to 3-D for wideband simultaneous switching noise (SSN) suppression. number rows coupling reduction investigated. Building SSN isolation walls along printed circuit board...

10.1109/tmtt.2007.906475 article EN IEEE Transactions on Microwave Theory and Techniques 2007-10-01

Based on the resonant cavity model, this paper presents a modeling approach for power/ground planes with decoupling capacitors. A bare plane pair is first modeled by model. Then, capacitors are divided into segments according to port coefficients, capacitance, number of capacitors, and frequency response each mode To get model incorporated By way, not only influence single mode, but also responses in can be reflected. being segmentation method physics-based method, extended handle...

10.1109/tcpmt.2016.2573842 article EN IEEE Transactions on Components Packaging and Manufacturing Technology 2016-06-16

As the clock frequency of a chip increases, on-chip decoupling capacitor must be placed closer to load effective. A method efficiently defining location placement meet specified noise limits is presented. Based on single RL line model for power distribution system, charging radius calculated under constraint target but not being fully charged. Under constraints length path and noise, discharging figured out. The conversion coefficient that converts radii in into equivalent one meshed...

10.1109/tvlsi.2016.2559585 article EN IEEE Transactions on Very Large Scale Integration (VLSI) Systems 2016-05-13

In this paper, signal integrity analysis of traces between two parallel planes with an electromagnetic-bandgap (EBG) structure is made. It shown that, within the stopband, transmission quality excellent, in EBG are free from cavity resonances, and behave as regular standard lines. that high-impedance surface behaves a solid continuous reference plane stopband. The impedances extracted. found extracted exactly same striplines parameters. addition, novel four-via proposed to broaden stopband...

10.1109/tmtt.2007.895413 article EN IEEE Transactions on Microwave Theory and Techniques 2007-05-01

A fast and accurate statistical eye diagram estimation method for high-speed nonlinear links is proposed in this article. Probability density functions (PDFs) of output responses are derived based on multiple edge (MERs). According to the property that influence nonlinearity will not propagate a long time links, new scheme calculating PDFs presented, which convolution process divided into section, transition linear section. Convolutions via high-order MERs only used low-order double The can...

10.1109/tvlsi.2021.3082208 article EN IEEE Transactions on Very Large Scale Integration (VLSI) Systems 2021-06-04

In this paper, an efficient algebraic method for the passivity enforcement of macromodels is presented. The based on quadratic programming with equality constraint. differences between constraint and conventional inequality are discussed. Compared general programming-based method, where violations compensated via numerical optimization, presented solution sparse linear equations. With special structure macromodels, compensation equivalent to some small size This gives large savings CPU time...

10.1109/tmtt.2010.2049925 article EN IEEE Transactions on Microwave Theory and Techniques 2010-06-18

In this paper, a new power distribution network (PDN) design method from delivery viewpoint is proposed. Two parameters, the delay and DeltaV time constant, are introduced to characterize effects of lead inductors decoupling capacitors on timely respectively for high-speed PDN. The PDN accurately estimated by inductance discontinuities, charge speed, supply capacity characterized constant. Based two complete systematic power-delivery developed. proposed verified SPICE, full-wave simulations,...

10.1109/tmtt.2009.2013308 article EN IEEE Transactions on Microwave Theory and Techniques 2009-02-13

A modeling method is presented based on the resonant cavity for power/ground plane with decoupling capacitors in high speed packages. Due to operating frequency of package, behave locally. The algorithm effective radius a capacitor characterize limited region within which impedance smaller than target impedance. Based radii capacitors, placement realize task power distribution network

10.1109/eptc.2016.7861470 article EN 2022 IEEE 24th Electronics Packaging Technology Conference (EPTC) 2016-11-01

In this paper, a new method is proposed to model the simultaneous switching noise (SSN) using time-domain impedance function, which based on rational function in time domain. The of power delivery network (PDN) calculated by approximating frequency response PDN with and SSN current characteristics, verified advanced design system, Hspice measurements. Based suppression also investigated, it found that produced periodic can be suppressed through adjusting periods current, principle for random...

10.1109/tcpmt.2011.2182194 article EN IEEE Transactions on Components Packaging and Manufacturing Technology 2012-02-07

A SPICE-compatible cavity resonant transmission line (CTL) model for a single-ended microstrip is first presented by reducing 2-D resonator to 1-D resonator. This has low efficiency since it consists of infinite higher-order components included inductors, capacitors, resistors, and ideal transformers. modified CTL developed using fast algorithm improve the simulation efficiency, which results in an accurate SPICE finite elements. Because improved uses (a little more complicated) elements...

10.1109/tcpmt.2010.2099714 article EN IEEE Transactions on Components Packaging and Manufacturing Technology 2011-01-28

In this paper, a new input impedance, the multiinput which includes all information of full impedance matrix, is proposed to accurately analyze and design planar power delivery networks (PDNs) in high-speed printed circuit boards packages. The potential impacts other operating active ports both low high frequencies. A systematical power-delivery-network analysis method using developed. global local characteristics decoupled PDN are well demonstrated by make modern PDNs more accurate...

10.1109/tmtt.2009.2022821 article EN IEEE Transactions on Microwave Theory and Techniques 2009-06-16

A novel high precision low-voltage low-power CMOS voltage reference operating in subthreshold region is presented. With a power supply of 1.0V, the temperature coefficient circuit designed with standard 0.5mum technology 66.7ppm/degC for range -40 degC to 125degC and an output which 225mV within plusmn1.4%.The current whole less than 4muA. study gate-source behavior respect MOSFETs also presented

10.1109/icasic.2005.1611340 article EN 2006-04-06

Based on the resonant cavity algorithm, a method is presented to model multilayered power/ground planes with stitching vias at high-speed packages and printed circuit board. A structure can be seen as combination of two basic units: adjacent different reference voltage that same voltage. Then, behaviors switching current in physics-based models for units are presented. By analyzing influence return path structure, it obtained remainder plane pairs act multiport load pair where located on....

10.1109/access.2018.2876886 article EN cc-by-nc-nd IEEE Access 2018-01-01
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