A Self-Calibrated Pipeline ADC with 200 MHz IF-Sampling Frontend

A 13-bit, 50-MS/s pipeline ADC with IF-sampling capability is presented. A high sampling linearity is obtained through the use of bootstrapped switches. A digital self-calibration algorithm with modified capacitor measurement scheme is employed to improve the accuracy of the first two pipeline stages. The prototype, implemented with a 0.35-m BiCMOS (SiGe) technology, shows a 76.5-dB SFDR at a 194.2-MHz signal frequency and dissipates 715 mW power from a 2.9-V supply.     

A Strategy for Rapid Mismatch Evaluation of Transient Characteristics of CMOS Analog Cells

A strategy is presented to evaluate the statistical means and standard deviations of the transient characteristics of CMOS analog cells. Based upon the Monte Carlo analysis of electrical simulations, this strategy follows a circuit-theory based approach achieving an important reduction on matrix ranges and consequently on the number of operations involved in the resolution of the circuit. The CPU time-consuming reduction is achieved also by saving information corresponding to the nominal transient analysis. We include comparative results for several CMOS cells showing the advantages of the proposed strategy.     

A High Speed, Low Voltage CMOS Offset Comparator

A high speed, low voltage offset comparator is presented. No common mode tracking circuit is used and the offset is added without compromising the high input impedance nature of the circuit. The circuit operates at 480 Mbps with 3.0–3.6 V and 1.6–2.0 V supplies and –40 to 125°C temperature range on a typical 0.5 m technology.     

本地网光缆线路物理双路由的互保问题

针对本地网光缆线路受市政建设的影响，迁、改割接比较频繁且常会受到外力的作用而阻断的情况，讨论了用户引入光缆和中继光缆物理双路由互保的问题。     

快速搜寻卫星数字压缩信号

在没有专业仪器，没有明确参照物的条件下，如何快速定位接收天线，搜索到卫星信号，是电视工程技术人员经常遇到的问题，本文就此问题提出了一个新的解决办法，即利用已知卫星的位置来定位其它卫星的位置。     

Wide dynamic range parallel feedback transimpedance amplifier for 10 Gb/s optical links

This paper presents the design and implementation of a new wide dynamic range parallel feedback (PF) transimpedance amplifier (TIA) for 10 Gb/s optical links. The wide dynamic range is attributed to the novel TIA architecture employing both shunt-shunt and shunt-series feedback networks. The outstanding features of the TIA are wide dynamic range, high gain, low power consumption and design simplicity. A prototype implemented in a 0.5 μm SiGe BiCMOS technology and operating at −3.3 V power supply features an 18.4 dBm dynamic range with a BER less than 10⁻¹², an optical sensitivity of −16 dBm, optical overload of +2.4 dBm, a bandwidth of 8.27 GHz, a gain of 950 Ω and a power consumption of 189 mW. The new parallel feedback architecture offers improved overload and noise performance when compared to previously reported, state of the art, single feedback TIA designs and meets all the 10 Gigabit Ethernet and short-reach OC-192 SONET specifications. Ricardo Andres Aroca received the B.S. (Hons) degree in electrical engineering from the University of Windsor, Canada, and the M.S. degree from the University of Toronto, Canada, in 2001 and 2004, respectively. In 2000 he spent two 4 month internships with Nortel Networks in the Microelectronics Department. Mr. Aroca received the Natural Sciences and Engineering Research Counsel of Canada (NSERC) Postgraduate Scholarship award in 2002. He is currently working toward the Ph.D. degree at the University of Toronto where his research interests lie in the area of high-frequency integrated circuits for wireless and wireline communication systems. C. Andre T. Salama received the B.A.Sc. (Hons.) M.A.Sc. and Ph. D. degrees, all in Electrical Engineering, from the University of British Columbia in 1961, 1962 and 1966 respectively. From 1962 to 1963 he served as a Research Assistant at the University of California, Berkeley. From 1966 to 1967 he was employed at Bell Northern Research, Ottawa, as a Member of Scientific Staff working in the area of integrated circuit design. Since 1967 he has been on the staff of the Department of Electrical and Computer Engineering, University of Toronto where he held the J.M. Ham Chair in Microelectronics from 1987 to 1997. In 1992, he was appointed to his present position of University Professor for scholarly achievements and preeminence in the field of microelectronics. In 1989-90, he was awarded the ITAC/NSERC Research Fellowship in information technology. In 1994, he was awarded the Canada Council I.W. Killam Memorial Prize in Engineering for outstanding career contributions to the field of microelectronics. In 2000, he received the IEEE Millenium Medal. In 2003, he received the Outstanding Lifetime Achievement Award from the Canadian Semiconductor Technology Conference for seminal and outstanding contributions to semiconductor device research and promotion of Canadian University research in microelectronics. In 2004, he received the NSERC Lifetime Achievement Award of Research Excellence for outstanding and sustained contributions to the field of microelectronics and the Networks of Centres of Excellence (NCE) Recognition Award for research excellence and outstanding leadership.He was associate editor of the IEEE Transactions on Circuits and Systems in 1986–88 and a member of the International Electron Devices Meeting (IEDM) Technical Program Committeein 1980–82, 1987–89 and 1996–98. He was the chair of the Solid State Devices Subcommittee for IEDM in 1998 and was a member of the editorial board of Solid State Electronics from 1984 to 2002. He is presently a member of the editorial board of the Analog IC and Signal Processing Journal and the Technical Program Committee of the International Symposium on Power Semiconductor Devices and ICs (ISPSD) and the Technical ProgramCommittee of the International Symposium on Low Power Electronics and Design (ISLPED). He chaired the technical program committee of ISPSD in 1996 and was the general chair for the conference in 1999.Dr. Salama is the Scientific Director of Micronet, a network of centres of excellence focussing on microelectronics research and funded by the Canadian Government and Industry. He has published extensively in technical journals, is the holder of eleven patents and has served as a consultant to the semiconductor industry in Canada and the U.S. His research interests include the design and fabrication of semiconductor devices and integrated circuits with emphasis on deep submicron devices as well as circuits and systems for high speed, low power signal processing applications. Dr. Salama is a Fellow of the Institute of Electrical and Electronics Engineers, a Fellow of the Royal Society of Canada, a Fellow of the Canadian Academy of Engineering, a member of the Association of Professional Engineers of Ontario, the Electrochemical Society and the Innovation Management Association of Canada.     

切比雪夫Ⅱ型模拟高通滤波器的设计及实现

提出了一种基于反相积分器的信号流图来实现切比雪夫Ⅱ型模拟高通滤波器的方法。首先,基于归一化切比雪夫Ⅱ型模拟低通滤波器极点分布的特点,推导出归一化切比雪夫Ⅱ型模拟低通滤波器零极点和转移函数的公式,得到归一化切比雪夫Ⅱ型模拟低通滤波器设计的步骤;然后,基于频率变换与逆变换,提出一种利用归一化切比雪夫Ⅱ型模拟低通滤波器来设计切比雪夫Ⅱ型模拟高通滤波器的方法;最后,给出了利用归一化切比雪夫Ⅱ型模拟低通滤波器来设计切比雪夫Ⅱ型模拟高通滤波器的实例及其实现电路。     

浅析光以太网的网络安全

文章简单介绍了光以太网网络安全的基本技术,根据光以太网的特性分析了其物理安全隐患及可采取的防御措施,并对光以太网中数据的信息安全进行了分析,探讨了采用身份认证和信息加密方法加强信息安全性的具体实现策略.     

光纤F-P应变传感器光纤端面反射率优化

讨论了光在F-P腔内的传输损耗,并分析了损耗对传感器输出信号质量的影响,进而提出了通过提高反射光纤端面反射率的方法来改善传感器输出信号的质量。为了使传感器在其工作腔长范围内的输出信号整体上具有尽可能好的对比度,采用最小均方误差法确定了反射光纤端面的最优反射率值,为F-P传感器制作中光纤端面反射率的确定提供了指导。     

微石英音叉陀螺精度受参数变化影响的研究

电子元件的参数变化是影响微石英音叉陀螺精度的重要原因之一,该文论述了模拟开关参数变化对陀螺精度的影响,提出了一种新的相敏解调法及相敏解调电路,进行了与常规方法的对比试验,列举了两种方法的陀螺的零位偏置变化、零位稳定性、标度因数温度灵敏度及非线性度等指标的测量数据。试验结果表明,采用新方法的陀螺性能优于常规方法,可消除模拟开关参数变化对陀螺精度的影响。