检索结果-南通市图书馆

Evaluation Model and Method of Margin in Electromagnetic Environmental Effects for Complex Systems

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2021年第1期30卷 171-179页

作者： TANG Shiping mao junfa Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High Speed Electronic System Shanghai Jiao Tong University Research Center for Electromagnetic Environmental Effects Southeast University

Margin is an important index in the control of Electromagnetic environmental effects(E3) and Electromagnetic compatibility(EMC) design for *** to define and verify the E3 margins of complex systems such as ships and airplanes is a difficult problem.A new method of system-level E3 margin evaluation is proposed. Based on the theory of fault tree, the evaluation model of system-level margin is *** complex system function is transformed into the equipment and subsystem that affect the function, and the relationship between margin of system-level and equipment is established. The change from margin of equipment to system-level margin is realized. According to the action process of Electromagnetic environment(EME), the verification and evaluation methods of EME domain, response domain and effect domain are put forward. The margin calculation formula of EME domain and typical electromagnetic energy coupling response are deduced. The problem of margin evaluation for equipment under different input parameters is solved. A typical application example is given. The verification test scheme is designed. The methods of electromagnetic energy radiation and injection are adopted. The system-level margin is analyzed by the data obtained from the effective test verification. The results show that the model and method are reasonable and feasible.

关键词： Electromagnetic environmental effects Electromagnetic compatibility Margin Fault tree analysis Test evaluation Complex systems

Analytical delay models for RLC interconnects under ramp input

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Electrical and Electronic Engineering in China 2007年第1期2卷 88-91页

作者： REN Yinglei mao junfa LI Xiaochun Department of Electronic Engineering Shanghai Jiao Tong UniversityShanghai 200030China

Analytical delay models for Resistance Inductance Capacitance(RLC)interconnects with ramp input are presented for different situations,which include overdamped,underdamped and critical response *** errors of delay estimation using the analytical models proposed in this paper are less by 3%in comparison to the SPICE-computed *** models are meaningful for the delay analysis of actual circuits in which the input signal is ramp but not ideal step input.

关键词： ramp input delay RLC interconnect model analytical formula

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

从集成电路到集成系统

中国科学:信息科学 2023年第10期53卷 1843-1857页

作者：吴林晟毛军发上海交通大学射频异质异构集成全国重点实验室上海200240 深圳大学射频异质异构集成全国重点实验室深圳518060

芯片与微电子系统是现代电子信息与智能技术的基础,芯片由集成电路(integrated circuits,IC)技术实现,而微电子系统则可由本文提出的集成系统(integrated systems,IS)技术实现.集成系统概念的提出参照了集成电路的思想,并基于以下4方面... 详细信息

芯片与微电子系统是现代电子信息与智能技术的基础,芯片由集成电路(integrated circuits,IC)技术实现,而微电子系统则可由本文提出的集成系统(integrated systems,IS)技术实现.集成系统概念的提出参照了集成电路的思想,并基于以下4方面原因:首先,集成电路是手段,系统才是目的,单个集成电路往往不具备系统功能,需要与其他电路或元器件相结合才能构成系统.其次,标准硅基集成电路的摩尔定律已面临挑战.第三,微电子系统的前道芯片设计加工与后道封装集成逐步收敛.最后,目前的封装集成技术采取分立的实施步骤.集成系统研究如何将各种不同材料、不同工艺、不同结构的元器件、天线、集成电路芯片进行集成,实现所需功能和性能的微电子系统.集成系统的一个核心理念是能否像设计、加工集成电路一样设计、加工微电子系统.本文将介绍集成系统的背景、概念、特征、面临的挑战、需解决的关键科技问题,以及一些研究进展.

关键词：集成电路微电子系统电子封装集成系统异质异构集成体系架构

An Efficient Intra-Frame Rate Control Algorithm for H.264/AVC Video Coding

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2012年第3期17卷 243-248页

作者： ZHAO Dandan ZHOU Yujie WANG Dayong mao junfa Electronic Engineering Department Shanghai Jiao Tong UniversityShanghai 200240China

Intra-frame plays a significant role in improving video quality for rate control of H.264/*** this paper,an efficient intra-frame rate control algorithm is proposed for H.264/AVC video *** proposed scheme adjusts the quantization parameter （QP） of intra-frame adaptively according to intra-frame buffer fullness ratio,current buffer fullness ratio,and skipped frame *** results demonstrate that for a set of typical testing sequences,the proposed scheme can obtain accurate target bit rate,better peak signal-to-noise ratio （PSNR） performance and reduce the number of skipped frames significantly,when compared with existing *** importantly,the proposed scheme is very flexible for different initial QPs and target bits.

关键词： H.264/AVC intra-frame rate control

Integrated multi-scheme digital modulations of spoof surface plasmon polaritons

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2020年第10期63卷 123-132页

作者： Lepeng ZHANG Haochi ZHANG Min TANG Peihang HE Lingyun NIU Liangliang LIU Jiayuan LU Wenxuan TANG junfa mao Tiejun CUI State Key Laboratory of Millimeter Waves Southeast University Key Laboratory of Ministry of Education of China for Research of Design and Electromagnetic Compatibility of High Speed Electronic Systems Shanghai Jiao Tong University Research Center of Applied Electromagnetics School of Electronic and Information EngineeringNanjing University of Information Science and Technology

The future wireless communications require different kinds of modulation functions to be integrated in a single intelligent device under different scenarios. Here, we propose a multi-scheme digital modulator to achieve this goal based on integrated spoof surface plasmon polaritons(SPP) in different frequency bands. By constructing switchable spoof SPP units, the propagating wave in the proposed spoof SPP waveguide can be manipulated in amplitude domain, frequency domain, and phase domain. As a proof of concept, the integrated multi-scheme digital modulator is experimentally verified to achieve at least three kinds of modulations, including amplitude shift keying, phase shift keying, and frequency shift keying, in a single digital spoof plasmonic waveguide. The simulated and measured results show that the modulator has excellent property of field confinement and is capable of frequency-domain modulation. Hence, the multi-scheme modulation property makes the proposed SPP digital modulator be an effective and reliable candidate for efficient manipulations of SPP waves and for advanced modulation technology.

关键词： spoof surface plasmon polaritons dynamic manipulation multi-scheme modulation dispersion engineering frequency modulation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

TMFABC及其在传输线参数提取中的应用

电子学报 1999年第3期27卷 13-15页

作者：毛军发上海交通大学电子工程系上海200052

本文发现将一阶Mur吸收边界条件分别应用到x－t，y-t，z－t平面上两相邻对角节点时，电磁波的反射误差可以互相抵消，从而提出了二重一阶Mur吸收边界条件（TwofoldMur＇sfirst－orderABC，简称TMFABC）．TMFABC可以很方便地应用到多层... 详细信息

本文发现将一阶Mur吸收边界条件分别应用到x－t，y-t，z－t平面上两相邻对角节点时，电磁波的反射误差可以互相抵消，从而提出了二重一阶Mur吸收边界条件（TwofoldMur＇sfirst－orderABC，简称TMFABC）．TMFABC可以很方便地应用到多层结构上去，吸收效率比一阶Mur吸收边界条件及其超吸收算法明显提高，尤其在低频端的效果更好，而且TMFABC对衰减波的吸收也很有效我们将TMFABC移植到一个时域有限差分（FDTD）程序中，用来提取多导体传输线的电路模型参数。

关键词：时域有限差分边界条件反射系数传输线

Design of a 0.5 V CMOS cascode low noise amplifier for multi-gigahertz applications

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2012年第1期33卷 114-119页

作者：刘宝宏周健军毛军发 Center for Microwave and RF Technologies Shanghai Jiao Tong University Shanghai 200240China Center for Analog/RF Integrated Circuits Shanghai Jiao Tong University Shanghai 200240China

This paper presents the design of 0.5 V multi-gigahertz cascode CMOS LNA for low power wireless communication. By splitting the direct current through conventional cascode topology, the constraint of stacking- MOS structure for supply voltage has been removed and based on forward-body-bias technology, the circuit can operate at 0.5 V supply voltage. Design details and RF characteristics have been investigated in this paper. To verify the investigation, a 0.5 V 5.4 GHz LNA has been fabricated through 0.18 μm CMOS technology and measured. Measured results show that it obtains 9.1 dB gain, 3 dB NF with 0.5 V voltage and 2.5 mW power dissipation. The measured IIP3 is -3.5 dBm. Compared with previously published cascode LNA, it achieves the lowest supply voltage and lowest power dissipation with competitive RF performances.

关键词： CMOS 0.5 V cascode low noise amplifier direct current split forward-body-bias technology multi- gigahertz applications

在线全文

学校读者我要写书评

暂无评论

一流大学与科技革命

科技导报 2022年第13期40卷 1-1页

作者：毛军发深圳大学深圳518060

近代以来,人类社会经历了3次重大科技革命。第1次是以蒸汽机的发明使用为标志的机械化革命,第2次是以电力的可控使用为标志的电气化革命,第3次是以计算机和互联网为核心技术的信息化革命。我们正迎来第4次科技革命,即基于人工智能、5G... 详细信息

近代以来,人类社会经历了3次重大科技革命。第1次是以蒸汽机的发明使用为标志的机械化革命,第2次是以电力的可控使用为标志的电气化革命,第3次是以计算机和互联网为核心技术的信息化革命。我们正迎来第4次科技革命,即基于人工智能、5G和新能源技术的智能化革命。一个国家若能很好地抓住科技革命的机遇,则往往能够乘势而上,迅速发展,反之亦然。英国、美国、日本等“老牌”资本主义国家自然不必多说,韩国就因很好地抓住了信息化革命的机遇成为发达国家。阿根廷曾经很发达,但因过于依赖自然资源,错失科技革命机遇,现已退为发展中国家。

关键词：信息化革命新能源技术人工智能一流大学互联网自然资源电气化蒸汽机

在线全文

学校读者我要写书评

暂无评论

基于微型化FMCW雷达的抗振乘员健康监测

雷达科学与技术 2022年第4期20卷 391-396,408页

作者：刘劲涛张泽生顾昌展毛军发上海交通大学上海200240

随着雷达系统的小型化,毫米波雷达在消费电子领域展现了广阔的应用前景。然而,毫米波雷达的车内应用,由于车内环境的复杂性和振动性的特点,依然面临着巨大挑战。为了解决车体振动对雷达探测的影响,本文提出了基于微型化调频连续波(FMCW... 详细信息

随着雷达系统的小型化,毫米波雷达在消费电子领域展现了广阔的应用前景。然而,毫米波雷达的车内应用,由于车内环境的复杂性和振动性的特点,依然面临着巨大挑战。为了解决车体振动对雷达探测的影响,本文提出了基于微型化调频连续波(FMCW)雷达的抗车体振动的乘员健康监测方法。该方法利用FMCW雷达将不同距离的物体的运动信息转化为相位信息加载于中频信号的不同频率成分中的特点以及车内乘员位置相对固定的特点,通过仅取乘员位置对应中频频率成分的相位信息,有效隔绝了车体其他部分振动对乘员健康监测的干扰。仿真和实验结果均表明,该方法在车体振动情况下,仍然可以有效工作。

关键词： FMCW雷达近距消费应用车内抗车体振动生命体征监测