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CAD Systems in Microelectronics, 2007. CADSM '07. 9th International Conference - The Experience of Designing and Applications of

Date 19-24 Feb. 2007

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Displaying Results 1 - 25 of 208
  • [Front cover]

    Page(s): C1
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  • The Experience of Designing and Application of CAD Systems in Microelectronics

    Page(s): 2 - 3
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  • Copyright page

    Page(s): 4
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  • International Program Committee

    Page(s): 5
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  • Conference Organising Committee

    Page(s): 6
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  • Preface

    Page(s): 7 - 8
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  • Contents

    Page(s): 9 - 16
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  • [Breaker page]

    Page(s): 17
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  • Optimization technique for piezo- and acousto-optical interactions geometry of light in anisotropic materials for example of pure and MgO-doped lithium niobate crystals

    Page(s): 18 - 22
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (276 KB) |  | HTML iconHTML  

    In this paper new approach to the spatial anisotropy analysis of piezo-, elasto- and acousto- optical effects on the basis of indicative surfaces for different components of tensor describing these effects has been proposed and the optimization technique for such interactions of light with mechanical field or acoustical wave in the anisotropic materials has been designed. Piezo- and elasto-optical effects as well as figure of merit were spatially analyzed basing on indicative surfaces construction for example of widely used pure and MgO-doped lithium niobate crystals. The obtained results provide the efficiency increasing of acousto-optical cells based on these crystals. View full abstract»

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  • Plane Wave Expansion Method with Considered Material Dispersion

    Page(s): 23 - 24
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    In this paper we propose new method that allows to take into account material dispersion when computing band structures of photonic crystal using plane wave expansion method. View full abstract»

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  • [Breaker page]

    Page(s): 25
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  • A Novel Approach to High-Speed Wireless Networking - A Modest Proposal

    Page(s): 26 - 34
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (184 KB) |  | HTML iconHTML  

    While there is growing demand for wireless bandwidth, the most pressing problem affecting this situation today is the attempt to increase bandwidth by extending the same technologies with tricks - rather than by using innovation. Opportunities for innovation are quite good with higher carrier frequencies, since these enable simplicity and low power consumption - opening the door to ubiquitous wireless networking. Numerous challenges exist in technology and design methods; however, meeting these intellectual challenges is the only route to next-generation wireless data technologies. View full abstract»

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  • Analysis of scattered by rain precipitation radar signals in MMW - band

    Page(s): 35 - 38
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    In the paper direct radar signals and by rain medium scattered radar signals are considered. An algorithm for such analysis, use rain normalized volumetric scattering cross section area and attenuation coefficient, is proposed. Summarized scattered by rain medium radar signal can reach a half of direct radar signal, calculated use attenuation coefficient only. View full abstract»

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  • Analysis of the Lyapunov Function Characteristics for the Minimal-Time Circuit Design Strategy Prediction

    Page(s): 39 - 45
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (271 KB) |  | HTML iconHTML  

    General methodology for the system design was elaborated by means of the optimal control theory approach. The problem of the system design can be formulated in this case as a classical problem of the optimal control for some functional minimization. In this context the aim of the optimal control is to result to zero of all right hand sides of the main system of the differential equations for the final time and to minimize the total computer time. The minimal time system design algorithm was defined as the problem of functional minimization. By this methodology the aim of the system design process with minimal computer time is presented as a transition process of some dynamic system that has the minimal transition time. The optimal sequence of the control vector switch points was determined as a principal characteristic of the minimal-time system design algorithm. The different forms of the Lyapunov function were proposed to analyze the behavior of a design process. The special function that is a combination of Lyapunov function and its time derivative was proposed to predict the optimal control vector structure to construct a minimal-time system design algorithm. View full abstract»

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  • Analysis of the Main Properties for a Minimal-Time Circuit Design Process

    Page(s): 46 - 54
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (481 KB) |  | HTML iconHTML  

    The different design trajectories have been analyzed in the design space on the basis of the generalized methodology of system design. Optimal position of the design algorithm start point was analyzed to minimize the computer design time. The initial point selection has been done on the basis of the before discovered acceleration effect of the system design process. The geometrical dividing surface was defined and analyzed to obtain the optimal position of the algorithm start point. Numerical results of both passive and active nonlinear electronic circuit design prove the possibility of the optimal selection of the design algorithm start point. View full abstract»

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  • Application of Harmonious Analysis for Authentication of Biological Test in Chemiluminescent Researches

    Page(s): 55 - 57
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (371 KB) |  | HTML iconHTML  

    A signal got from photomultiplier tube consists of useful and to the dark signal and fluctuation noise. It is necessary to conduct its digital treatment with the purpose of selection of useful constituent a signal. In the article a resulting signal is offered to give in a frequency form and conduct its spectral analysis on the basis of discrete Fourier transform. An author throws out suggestions to adopt the model of the explored signals as multiharmonic row with the limited number of harmonic. Since the expansion of signal is carried out, it is possible to define the particle of every spectral constituent in total power of signal and compare them to the conditional norm or certain known types of rejections of antioxidant properties of bioassays which are made on the stage of studies. Such harmonics will serve as the integral signs of classifications of the registered signal from bioassays and they are more proof comparatively with the traditional in medical practice parameters of estimation on the basis of the calculated coefficients which do not have repetition in the series of the same types measurings. The spectral correction of signal is conducted with application of rectangular spectral window with subsequent transformation him in a sentinel area. View full abstract»

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  • Automated Recognition of Sleep Stages by Electroencephalograms

    Page(s): 58
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (233 KB) |  | HTML iconHTML  

    Peculiarities of solving the problems of the automated recognition of the sleep stages by electroencephalograms with various artifacts are considered. It is offered to use the autoregressive algorithm for recognition of the specified random signals in the presence of the unknown signals. Results of the sleep stages recognition algorithm investigations using the method of statistical simulation based on the EEG sampling for six stages of sleep are given. View full abstract»

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  • Bragg Gratings Filter with Apodized Duty-Cycle for 10GHz Channel Spacing DWDM System

    Page(s): 59 - 63
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (676 KB) |  | HTML iconHTML  

    The main goal of this paper is to show that using Bragg grating filter with apodized duty cycle it is possible to realize a 10 GHz channel spacing DWDM system. The way to find the best configuration of the grating taking into consideration the lowest level of the first side lobe in the reflection spectrum is shown. Then the solution to eliminate crosstalk for the 10 GHz channel shift is explained and the method for dynamic selection of the channel is proposed. View full abstract»

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  • Calculation of Transients in Second Order Circuit with Saw-Tooth Input by Equivalents Method

    Page(s): 64 - 67
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    Analytical method of calculation steady states and transients in linear second order circuit with saw-tooth input has been developed. The method is based on using integral equations and on description of functions by the terms of equivalents. View full abstract»

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  • Circuit Design Process as Dynamic Controllable System

    Page(s): 68 - 79
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (560 KB) |  | HTML iconHTML  

    The formulation of the process of any analog system design has been done on the basis of the control theory application. Different kinds of system design strategies have been evaluated from the operations number. The problem of the minimal-time design algorithm construction is defined as the problem of functional minimization of the optimal control theory. This approach generalizes the design problem and generates an infinite number of the different design strategies inside the same optimization procedure. Numerical results demonstrate the efficiency of the proposed methodology and prove the non-optimality of the traditional design strategy. View full abstract»

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  • Comparative Analysis of Radiative Characteristics for Two Types of Waveguide Antennas

    Page(s): 80 - 84
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    The variational approach for statement and solution of the nonlinear synthesis problems according to the amplitude characteristics is examined. The numerical solution of problems is realized by the methods of successive approximations, which are used for solving the corresponding Euler's equations or the direct optimization of functionals. The results of simulation confirm the effectiveness of the approach proposed. View full abstract»

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  • Deposition of Tungsten Films in Penning's Arc Dischardge

    Page(s): 84 - 86
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    Results of investigation of Penning's discharge with a probe inserted into the centre of the discharge gap through the anode hole are described. It is found that the discharge current decreases and the probe becomes heated if its potential is negative up to 1 kV. If the discharge current exceeds 80 mA and the potential of the probe is of 1.15 kV for tungsten or molybden probes, the discharge becomes of arc mode. It is found that there exist minimal values of discharge and probe currents necessary for sustaiining arc mode. Results of the experiments are accounted for by the emergence of thermoemission of the probe. It is shown that intensive sputtering of the probe in arc discharge enables us to increase the rate of deposition of tungsten films by an order as compared to glow charge. View full abstract»

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  • Design Models of Pipelined Units for Digital Signal Processing

    Page(s): 87 - 91
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (466 KB) |  | HTML iconHTML  

    In this paper the architectural models of pipelined computing units with system-level description, those essentially decrease the design cycle for digital signal processing products, are offered. Practical realization of the filter, that confirms developed design flow effectiveness with software products Simulink (Mathlab) and Active HDL, Aldec Inc., is given. View full abstract»

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  • Design of Discrete Time Demodulators of AM- and FM-Harmonic Signals Using Energy Operators

    Page(s): 92 - 95
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (611 KB) |  | HTML iconHTML  

    The mathematical models and structure-functional diagrams of new discrete time demodulators of amplitude modulated (AM-) and frequency modulated (FM-) signals are proposed. The models are determined in a form of difference equations with given initial conditions. Appropriate functional block-diagrams of the demodulators consist discrete time differentiators, integrators, summers, multipliers, dividers and functional transformers. The structure and parameters of demodulators are independent of a carrier frequency. The proposed demodulators do not need a filtering of output signals. In the conditions of small level noises in input signals the demodulators can be used without any additional tools. An affect of high level noises can be minimized to an acceptable magnitude if input signals before demodulator are passed through a set of narrow band filters with an obtaining on its output almost monochromatic signals. View full abstract»

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  • Determination of Parameters of Filter Method of Heart Rate Variability Analysis

    Page(s): 96 - 97
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    Standard parameters of a heart rate variability (HRV) in frequency domain are analyzed. Parameters of a filter comb for analysis of non-stationary HRV are determined on the base of analyzed standard parameters. View full abstract»

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