IDT推出可编程PLL时钟发生器

IDT公司日前推出可编程时钟发生器新系列。新器件基于EEPROM的可编程序平台，采用IDT可编程时钟以及增强的多相位锁相环路(PLL)架构，符合IEEE1149．1a的JTAG端口编程于边界扫描规范，适用于通信、数字消费和工业市场等领域。     

莱迪斯MachXO器件超越传统的CPLD和FPGA

被莱迪斯称为跨越式可编程逻辑器件的MachXO系列器件是具有FPGA集成性能的非易失CPLD，支持传统上由高密度的CPLD和低容量的FPGA所实现的应用。新器件采用130nm的非易失性嵌入式Flash工艺，以及用于逻辑实现的4输入查找表的方法，能让系统设计者在单位逻辑功能上降低500k，的成本。MachXO器件适用于总线桥接、接口、控制逻辑、时钟管理、电源及复位控制、存储器控制等多种功能的实现，在汽车控制、消费类电子、通信等市场将有广阔的应用前景。     

体声波滤波器和双工器

Maxim推出推挽式FET驱动器．MAX5075／MAX5077，这两款器件内部集成振荡器，具有可编程时钟输出，可用于同步外部PWM控制器。振荡频率通过外部电阻在50kHz～1．5MHz范围内设置。MAX5075有三个版本，其时钟输出与MOSFET驱动器的频率比分别为1倍、2倍、4倍。MAX5077的时钟输出与MOSFET驱动器频率比可通过两个逻辑电平引脚设置为1倍、2倍、4倍。这些驱动器是设计高效、电流反馈隔离电源所必须的基本结构，适用于电信和网络线卡。     

用模块化设计技术改善行为设计的适配结果

本文介绍了模块化设计的方法在可编程逻辑器件进行逻辑设计中的应用，以改善行为逻辑设计适配到可编程逻辑器件结构的效率和资源利用率。文章中的方法以现场可编程门阵列为例，其方法同样适用于复杂何编程逻辑器件。     

GSM射频芯片内RC时间常数测量电路的设计

针对集成电路工艺容差所引起的器件偏差,设计了一款RC时间常数测量电路,适用于GSM系统的多相滤波器模块.电路采用可编程电容阵列,可快速调谐,以保证模块稳定.仿真结果表明,采用5位数控方式调谐电容阵列,调谐时间误差不超过三个时钟周期,满足系统要求.     

IDT推新可编程多相位锁相环路时钟发生器

IDT近日宣布推出可编程时钟发生器新系列。新器件使基于EEPROM的可编程序平台从上一代IDT可编程时钟以及增强的，多相位锁相环路（PLL）架构更容易为客户提供通用性和高性能的完美组合。该产品符合IEEE1149．1a的JTAG端口编程和边界扫描规范，体现了该公司为满足设计师和生产商需求提供定时器件的承诺。新的可编程时钟发生器的性能和特点使之广泛适用于通信、数字消费和工业市场。     

采用ISP技术的通用雷达数字信号光纤传输系统

介绍一种采用ISP技术的通用雷达数字信号光纤传输系统,提出了一种特殊的同步复分接方式,并运用现场可编程大规模集成逻辑器件实现这种同步复分接电路.     

PCM串行数据流同步时钟提取设计

为了产生语音调度系统中数据接收端异步接收PCM30／32路一次群串行数提流所需同步时置瑚目的,采用以分频计数器为基础模块,辅以相位校正和误校正处理模块从已知速率PCM数据流中提取同步时钟信号的方法,利用可编程逻辑器件和VerilogHDL硬件描述语言对该方法进行实现和仿真验证。结果表明该方法能够有效地利用已有串行数据流产生具备合适相位的同步采样时钟信号。     

微机保护中DSP与时钟DS12CR887的接口设计

介绍了以DSP为核心处理器的微机继电保护系统中,利用复杂可编程逻辑器件(CPLD)实现外围电路时序控制的设计方法,通过对时钟器件DS12CR887的分析,给出了电路的硬件结构及其接口电路,并详细介绍了软件的实现方法.     

PLL时钟发生器

IDT公司日前宣布推出可编程时钟发生器系列。新器件符合IEEE 1149.1a的JTAG端口编程和边界扫描规范，适用于通信、数字消费和工业市场。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NOTICE OF CHANGING JOURNAL OF ELECTRONICS （CHINA） TO MICROSYSTEMS ＆ NANOENGINEERING

正Journal of Electronics(China)(JE)was founded in 1984,sponsored by the Institute of Electronics,Chinese Academy of Sciences.JE is one of the first English academic journals in China in the field of Electronics and Information technology.The journal was published quarterly since it was launched in 1984 to 2003,then it is published bimonthly till now.During