一种新的可编程、可扩展的Hamming神经网络

提出了一种新的可编程、可扩展Hamming神经网络。它采用电流镜计算待识模式与标准模式的匹配度。然后,通过电流型排序电路进行匹配度的排序操作并输出识别结果。该Hamming神经网络中的标准模式模板是可编程的,以满足不同场合的应用要求。另外,该网络芯片在规模上可以很容易地进行扩展,这较大地提高了该处理芯片应用的灵活性。由于网络电路中模拟部分完全采用电流型电路,使其可完全直接采用标准数字CMOS工艺进行制作,并易于模/数混合集成。已经采用单层金属、单层多晶的2pm N阱标准数字CMOS工艺成功地制作了该Hamming网络中的核心单元电路芯片,测试结果表明,该核心单元电路芯片的性能很好,完全可以满足处理器的性能要求。     

一种改进的电流型排序电路

本文提出了一种改进的电流型排序电路．该电路排序功能好,电路的结构简单、灵活．我们采用２μｍＮ阱标准数字ＣＭＯＳ工艺成功制作了该排序电路．实验结果表明,该电路具有较高的精度和分辨率,可以广泛地应用于多种领域,具有较高的实用价值     

一种新型高精度电流型排序电路

本文提出了一种结构简单而精度较高的电流型排序电路．这种电路结构较为简单,其复杂度仅为Ｏ（Ｎ）,其控制电路与偏置电路也都比较简单,它具有一定的自适应性．该排序电路主要由ＷＴＡ网络、触发电路以及开关电流跟踪／保持电路组成．它的分辨精度取决于ＷＴＡ电路,再现精度则主要由ＰＭＯＳ电流镜和跟踪／保持电路决定．其分辨精度在１％之内,而其再现精度也比较高,动态范围在几微安到几百微安之间．该电路制作工艺完全与标准数字ＣＭＯＳ工艺兼容     

一种新的多功能电压型排序电路

提出并成功制作了一种多功能电压型排序电路，它采用开关电容技术来跟踪／保持输入信号，通过全对称的求大网络了大，最后分时输出排序结果，该排序电路不仅可以确定电压输入端的顺序，而且可以将输入电压值按大小的顺序依次输出，这将十分有利于排序结果的后处理，我们采用单层金属，单层多晶的２μｍ－Ｎ阱标准数字ＣＭＯＳ工艺成功制作了该排序电路，实验结果表明，该电路性能较好，有应用前景。     

一种新型可扩展的电流排序电路

本文提出了一种新的可扩展电流型排序电路。该电路在功能上,不权可以将输入电路按大小顺序输出,而且还可以确定输出电流相应的输入端。该电路的埯序时间和面积复杂度仅为Ｏ（Ｎ）,Ｎ为待排序电流输入端数。在结构上,该电路简单、灵活,芯片之间可以扩展。由于该电路完全同数字ＣＭＯＳ工艺相兼容,易于赵大规模集成电路制作。     

一种新的高性能开关电容排序电路

本文首次提出了一种高性能的开关电流型排序电路．它采用开关电流镜跟踪／保持输入信号，通过全对称的ＷＴＡ（Ｗｉｎｎｅｒ－Ｔａｋｅ－Ａｌ）电路网络求最大，最后分时输出排序结果．该电路结构简单、灵活，规模易扩展．ＰＳＰＩＣＥ模拟结果表明，该电路的输出电流相对于输入电流的偏差小，最大偏差为５μＡ；排序电路有较高的分辨精度，在５μＡ以内．由于采用开关电流技术，该电路完全同数字ＣＭＯＳ工艺相兼容，易于ＶＬＳＩ实现     

一种新的高性能开关电流排序电路

本文首次提出了一种高性能的开关电流型排序电路．它采用开关电流镜跟踪／保持输入信号，通过全对称的ＷＴＡ（Ｗｉｎｎｅｒ－Ｔａｋｅ－Ａｌ）电路网络求最大，最后分时输出排序结果．该电路结构简单、灵活，规模易扩展．ＰＳＰＩＣＥ模拟结果表明，该电路的输出电流相对于输入电流的偏差小，最大偏差为５μＡ；排序电路有较高的分辨精度，在５μＡ以内．由于采用开关电流技术，该电路完全同数字ＣＭＯＳ工艺相兼容，易于ＶＬＳＩ实现     

采用混合模式晶体管(BMHMT)构成低温BiCMOS集成电路

本文介绍采用与ＣＭＯＳ工艺完全相容的双极／ＭＯＳ混合模式晶体管（ＢＭＨＭＴ）构成新型的低温ＢｉＣＭＯＳ集成电路．理论分析表明该电路与ＣＭＯＳ相比，在电压摆幅相同，静态功耗相近的条件下，具有更大的驱动能力，尤其在较低的工作电压下，其特点更加突出．我们用统一的标准和相同芯片面积设计了３９级带负载的ＢｉＣＭＯＳ和ＣＭＯＳ环形振荡器．实验样品经室温和低温平均门延迟时间测试，表明在相同工作电压下ＢｉＣＭＯＳ优于ＣＭＯＳ．若两种电路都采用ＳＯＩ结构，预计ＢｉＣＭＯＳ可以获得更好的结果     

多道电子耳蜗接收刺激器专用集成电路

采用全定制和半定制相结合的方法，设计了一种多通道电子耳蜗接收刺激器专用芯片，它主要包括数接收器，信号译码电路，控制信号产生器，电源监测器，错误检测器，可编程电流源和输出开关网络。具有两种刺激模式，２５６级输出电流和２２个电极输出，整个模拟，数字电路在标准３μｍＣＭＯＳ Ｐ阱工艺上制备。芯片面积为１２．５ｃｍ＾２．     

一种可编程Hamming神经网络特征提取器

根据Hamming神经网络的工作原理提出了一种可用于手写体数字识别的电流型可编程局部结构特征提取电路．该特征提取器的模板不仅是可编程的，它可根据不同的需要来随时更改模板的内容以适应不同的情况，而且其特征合并的方式也是可配置的，它可根据不同的需要把所需的特征合并成不同的特征类别．对于该可编程特征的电路模拟以及用单层多晶、双层金属1.2μm数字CMOS工艺所制作的实验芯片的测试表明该电路能很好地完成特征提取的功能．     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

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.     

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.     

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.     

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.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

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.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

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