检索结果-内蒙古大学图书馆

International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R.O.C National Yunlin University of Science and Technology Taiwan R.O.C

ISBN: (纸本)9781665449670

A continuous-time quadrature bandpass sigma-delta (ΣΔ) modulator consisting of a chain of integrators with weighted capacitive feedforward summation (CICFF) topology is presented for LTE-A wireless controllers. The main advantage of the proposed modulator adopts the weighted capacitor technology to save a feedforward summation amplifier, hence reduces power consumption from QVCO. The phase locked loop was implemented in tsmc 0.18 μm CMOS process. With 1.8 V supply voltage and 160 M-samples/s and - 1.0 dBm 1 MHz sinusoid, measured results have achieved a dynamic range of 56 dB, a peak SNDR of 52.8 dB, a SFDR of 59 dB, an ENOB of 8.49-bit over 2.5 MHz signal bandwidth and a power dissipation of 18.5 mW. Including pads, the chip area is 1.3×1.5 mm 2 .

关键词： Wireless communication Sigma-delta modulation Voltage measurement Power demand Phase modulation Modulation Dynamic range

来源：评论

学校读者我要写书评

暂无评论

Chip Sigma-Delta Modulator with Frequency Synthesizers for Phase-Locked Loop Control

Chip Sigma-Delta Modulator with Frequency Synthesizers for P...

引用

International Conference on Computing, Communication & Automation (ICCCA)

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin Univ. of Science and Technology Taiwan R. O. C. National Yunlin Univ. of Science and Technology Taiwan R. O. C.

ISBN: (纸本)9781665447539

The article presents phase - locked loop consists of frequency synthesizers and multi-bands low-pass continuous-time $\Sigma-\Delta$ modulators. The promoted sigma - delta $(\Sigma-\Delta)$ modulators with cascaded integrator and frequency synthesizers are presented for phase locked loop controller. The promoted integration of phase - locked loop was implemented in tsmc 0.18 μm CMOS process. Experimental has achieved the SNDR of 42/ 33 dB over half MHz, phase noise of voltage-controlled oscillator (VCO) produces -120.08 dBc/Hz at 1MHz offset, and phase noise of PLL produces - 113.2 dBc/Hz at 1MHz offset, respectively. This dual-bands phase-locked loop (PLL) are carefully integrated for low dissipation sensor control applications.

关键词： Phase noise Frequency synthesizers Sigma-delta modulation Frequency modulation Phase measurement Phase modulation Voltage-controlled oscillators

来源：评论

学校读者我要写书评

暂无评论

Mixing Wake-up Receiver of Low Noise Amplifier with Back-gated QVCO

Mixing Wake-up Receiver of Low Noise Amplifier with Back-gat...

引用

Electrical, Computer and Energy Technologies (ICECET), International Conference on

作者： Wen-Cheng Lai Bachelor Program in Industrial Projects National Yunlin Univ. of Science and Technology Taiwan R. O. C. National Yunlin Univ. of Science and Technology Taiwan R. O. C.

ISBN: (纸本)9781665442329

This article presents mixing receiver of the low noise amplifier with back-gated QVCO using double balance mixer with doublers to merge low noise amplifier and LC-resonator quadrature voltage-controlled oscillator (QVCO) form balun circuit. The proposed QVCO can degrade NMOS subthreshold voltage. The proposed double balance mixer with doublers describes broadband integrated design, operation principle and experimental of the mixing receiver from low noise amplifier (LNA) and QVCO with balun circuit. The proposed QVCO circuit is composed of an LC resonator (C is a parasitic capacitor), NMOS cross-coupled, back gate resister, bias resistor, and DC block of capacitors. The mixing receiver implemented in tsmc CMOS process can be used in wireless radio frequency communication systems.

关键词： Wireless communication Resistors Low-noise amplifiers Baluns Voltage-controlled oscillators Capacitors Receivers

来源：评论

学校读者我要写书评

暂无评论

Bandpass Continuous-time Sigma-delta Modulators for PLL Chip Design in Wireless Charging Module

Bandpass Continuous-time Sigma-delta Modulators for PLL Chip...

引用

International Future Energy Electronics Conference (IFEEC)

作者： Wen-Cheng Lai Wen Liu Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R.O.C. National Yunlin University of Science and Technology Taiwan R.O.C. School of Advanced Technology Xi’an Jiaotong-Liverpool University Suzhou China

ISBN: (纸本)9781665434492

This article employing PLL frequency synthesis to consist of continuous-time (CT) sigma-delta ($\Sigma \Delta$) modulator, voltage-controlled oscillator with divider and bandpass filter with phase detector is presented and implemented in tsmc 0.18 um CMOS technology. The phase lock loop (PLL) is proposed to lock the phase discrepancy among the wireless charging transmitting current and receiving voltage, at which report the module achieves excellence efficiency from RF wireless analog transmitter and receiver.

关键词： Wireless communication Radio frequency Sigma-delta modulation Transmitters Inductive charging Receivers Detectors

来源：评论

学校读者我要写书评

暂无评论

A 35 V-5 V monolithic integrated GaN-based DC-DC floating buck converter

引用

Semiconductor Science and Technology 2023年第9期38卷 095001-095001页

作者： Zhu, Yuhao Su, Haodong Li, Fan Li, Ang Lei, Xiaohaoyang Cui, Miao Lai, Wen-Cheng Wen, Huiqing Liu, Wen School of Advanced Technology Xi’an Jiaotong-Liverpool University Suzhou China Department of Electrical Engineering and Electronics University of Liverpool Liverpool United Kingdom Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Yunlin Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Yunlin Taiwan

The paper presents the development of a GaN DC-DC power converter with a pre-driver module and power device based on a monolithic integrated GaN E/D-mode metal-insulator-semiconductor high electron mobility transistors (MIS-HEMTs) platform. The pre-driver module with direct coupled field effect transistor logic circuit structure has been monolithically integrated with a GaN power transistor on a Si-based AlGaN/GaN commercial epitaxial wafer. The MIS-HEMTs structure adopts an insulated gate dielectric layer to suppress the leakage current and increase gate voltage robustness. The GaN-based floating buck converter employs a 1 mH inductor and a 9 μF capacitor to achieve 35 V-5 V power conversion. As a result, the pre-driver module is capable of delivering a 10 V driving voltage. GaN monolithic integration of the pre-driver module and power device can reduce the system area in the DC-DC application, which allows for an integrated chip size of 1.8 mm2 © 2023 IOP Publishing Ltd

关键词： III-V semiconductors

来源：评论

学校读者我要写书评

暂无评论

A Machine Learning Algorithm to Automate Vehicle Classification and License Plate Detection

引用

Wireless Communications and Mobile Computing 2022年第0期2022卷

作者： Srividhya, S.R. Kavitha, C. Lai, Wen-Cheng Mani, Vinodhini Khalaf, Osamah Ibrahim Department Of Computer Science And Engineering Sathyabama Institute Of Science And Technology Chennai India Bachelor Program In Industrial Projects National Yunlin University Of Science And Technology Douliu640301 Taiwan Department Electronic Engineering National Yunlin University Of Science And Technology Douliu640301 Taiwan Al-Nahrain University Al-Nahrain Nanorenewable Energy Research Center Baghdad Iraq

In the field of intelligent transportation systems (ITS), video surveillance is a hot research topic;this surveillance is used in a variety of applications, such as detecting the cause of an accident, tracking down a specific vehicle, and discovering routes between major locations. Object detection and shadow elimination are the main tasks in this area. Object detection in computer vision is a critical and vital part of object and scene recognition, and its applications are vast in the fields of surveillance and artificial intelligence. Additionally, other challenges arise in regard to video surveillance, including the recognition of text. Based on shadow elevation, we present in this work an inner-outer outline profile (IOOPL) algorithm for detecting the three levels of object boundaries. A system of video surveillance monitoring of traffic can be incorporated into this method. It is essential to identify the type of detected objects in intelligent transportation systems (ITS) to track safely and estimate traffic parameters correctly. This work addresses the problem of not recognizing object shadows as part of the object itself in-vehicle image segmentation. This paper proposes an approach for detecting and segmenting vehicles by eliminating their shadow counterparts using the delta learning algorithm (Widrow-Hoff learning rule), where the system is trained with various types of vehicles according to their appearance, colors, and build types. An essential aspect of the intelligent transportation system is recognizing the type of the detected object so that it can be tracked reliably and the traffic parameters can be estimated correctly. Furthermore, we propose to classify vehicles using a machine learning algorithm consisting of artificial neural networks trained using the delta learning algorithm, a high-performance machine learning algorithm, to obtain information regarding their travels. The paper also presents a method for recognizing the number plate using tex

关键词： Object detection

来源：评论

学校读者我要写书评

暂无评论

Performance Investigation of Tri-Layer Double-Gate Ingazno Thin-Film Transistor in Synchronous Bias for Active-Matrix Lcds

SSRN

引用

SSRN 2023年

作者： Mishra, Richa Dargar, Shashi Kant Dargar, Abha Birla, Shilpi Lai, Wen-Cheng Department of Electronics Engineering Kalasalingam Academy of Research and Education TN India Department of Electronics Engineering Manipal University Jaipur India Department of Computer Science Engineering Parul University Vadodara India Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Taiwan

In the current display electronics, a high-resolution pixel density and refresh rate ranging 7680 × 4320 pixels, 300 ppi, and 240 Hz are in high demand. The pixel-driving Thin–Film Transistors (TFTs) are primarily responsible for the switch in such displays. The amorphous Indium-Gallium-Zinc-Oxide (a-IGZO) TFTs are popular in realizing better high–speed properties in line to achieve those needs. In previous years, amorphous-IGZO channel TFTs in one-gate and dual-gate structures have exhibited improved gate control. In this paper, the authors present the analytical performance of double–gate tri-layer channel structure design of a-IGZO TFT with three stacked channel layers (IGZO/ITO/ITO1) to model and evaluate the device performance at different gate biasing. The proposed device simulation results were encouraging, in terms of high capacitance in dual gate bias (CDG) 26.2 nF/cm2, high mobility (µFE) 16.93 cm2/V.s, and steeper subthreshold swing (SS) 95 mV/decade. © 2023, The Authors. All rights reserved.

关键词： Thin film transistors

来源：评论

学校读者我要写书评

暂无评论

Neural Network Architecture Based on Wavelet Transform for Electro-mobility Detection

Neural Network Architecture Based on Wavelet Transform for E...

引用

IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Ching-Lung Su Wen-Cheng Lai Jun-Yao Zhong National Yunlin University of Science and Technology Taiwan R. O.C. Research and Implementation Center of Intelligent Electronic Product National Yunlin Univ. of Science and Technology Taiwan R. O. C. Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Taiwan R. O. C.

This article discusses the development of a neural network model for long-distance objects and a small-scale of computing. The proposed architecture of wavelet object detection is based on merge other frequency domains of the image into reference. The Experiments is applied for long-distance scenes to provide higher accuracy assume as lower computational complexity. Feasibility of the proposed wavelet neural networks has been evaluated and verified on vehicle detection. The architecture of wavelet object detection promoted low latency and high frame per second (fps) to porting on the NVIDIA JETSON AGX XAVIER evaluation board for artificial intelligence applications.

关键词： Wavelet transforms Wavelet domain Vehicle detection Frequency-domain analysis Conferences Neural networks Computer architecture

来源：评论

学校读者我要写书评

暂无评论

Antibacterial and Photocatalytic Dye Degradation Activities of Green Synthesized NiSe Nanoparticles from Hibiscus rosa-sinensis Leaf Extract

引用

Water (Switzerland) 2023年第7期15卷 1380页

作者： Velayutham, Lakshmi Parvathiraja, C. Anitha, Dhivya Christo Mahalakshmi, K. Jenila, Mary Gupta, Jeetendra Kumar Wabaidur, Saikh Mohammad Siddiqui, Masoom Raza Aftab, Sikandar Lai, Wen-Cheng Palayamkottai Manonmaniam Sundaranar University Tamilnadu Tirunelveli627012 India Department of Physics Manonmaniam Sundaranar University Tamilnadu Tirunelveli627012 India Chemistry Department College of Science King Saud University Riyadh11451 Saudi Arabia Department of Intelligent Mechatronics Engineering Sejong University 209 Neungdong-ro Gwangjin-gu Seoul05006 Korea Republic of Bachelor Program in Industrial Projects National Yunlin University of Science and Technology Douliu640301 Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Douliu640301 Taiwan

Ecosystems worldwide face a serious and life-threatening water crisis due to water contamination. Nanotechnology offers a promising solution to this issue by providing methods for removing pollutants from aquatic sources. In this study, we utilized a green and simple approach to biosynthesize NiSe NPs using Hibiscus rosa-sinensis extract as the bio-source. The plant extract acts as a reducing, stabilizing, and capping agent in the synthesis process. A simple hydrothermal method was employed to blend the NiSe NPs photocatalysts. UV-Visible DRS spectroscopy was utilized to confirm the reduction in and stabilization of Ni2+ and Se2− ions. The resulting NiSe NPs have a bandgap of 1.74 eV, which facilitates electron and hole production on their surfaces. To characterize the functional groups on the NiSe NPs and their surface interactions with bio-compounds, FTIR spectroscopy was utilized. XRD analysis revealed the crystallite size of the NiSe NPs to be 24 nm, while FE-SEM and TEM imaging showed their spherical shape and material distribution. EDX spectroscopy confirmed the integrity of the NiSe NPs’ material. XPS analysis provided information on the chemical composition, nickel and selenium valency, and their interface. The efficacy of the NiSe NPs as a blended photocatalyst in photodegrading Methylene Blue (MB) dye was tested under visible light, resulting in 92% degradation. Furthermore, the NiSe NPs exhibited bactericidal activity against Escherichia coli and Staphylococcus aureus bacteria due to their advanced oxidation and reduction in charge particles, which increased the degradation efficiency and suppressed cell proliferation. Based on the obtained findings, the NiSe NPs show promise as a powerful agent for water remediation and microbial resistance. © 2023 by the authors.

关键词： Degradation

来源：评论

学校读者我要写书评

暂无评论

SHIPBOARD STOWAGE OF FLAMMABLE AND COMBUSTIBLE LIQUIDS

引用

NAVAL ENGINEERS JOURNAL 1986年第3期98卷 199-208页

作者： DROPIK, MV graduated from the University of Detroit in 1969 with a bachelor of science degree in mechanical engineering. He began his Navy career that year with the Naval Ship Systems Command PMS-382 Ship Acquisition Manager for Mine Patrol and Yardcraft. In 1971 he transferred to the General Arrangements and Habitability Design Branch of the Naval Ship Engineering Center. From 1971–1972 he attended graduate school at the University of California at Berkeley through the Navy's long-term training program and received his master's degree in industrial engineering. He currently heads the Auxiliary/Amphibious/Minecraft/Special Projects Branch of NAVSEA's Arrangements Design Division. His duties in this capacity include those of program manager of the U.S. Navy's flammable liquids program a position which he has held for the last eight years. His experience encompasses the general arrangements habitability storeroom and office design of aviation auxiliary amphibious mine warfare and high performance ships and craft.

The uncontrolled proliferation of flammables and combustibles aboard ship, in addition to posing an obvious fire and explosive hazard, has seriously degraded the survivability and increased the vulnerability characteristics of U.S. Navy surface ships. This problem for the most part has been superficially attributed to a widespread shortage of flammable and combustible stowage capacity. As a result, current solutions have been limited to increasing stowage capacity through additional storerooms and development of more efficient stowage aids. Unfortunately, these solutions simply address the symptoms, are of a corrective nature, and do not eliminate the fundamental causes of the problem. The paper conducts a more systematic and comprehensive investigation into identifying and resolving the flammable liquids problem by considering it from a ship life cycle perspective. In this way, the problem is shown to be the resultant accumulation of a number of causes which occur during a ship's design, construction, and operational phases, and which collectively manifest themselves as a major shortage of flammable and combustible liquid stowage space aboard current fleet ships. Actions are then formulated to eliminate or counteract these fundamental causes, and validated by application to a hypothetical case study.

关键词： NAVAL VESSELS

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：