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2008 11th International Biennial Baltic Electronics Conference

Date 6-8 Oct. 2008

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Displaying Results 1 - 25 of 84
  • [Front cover]

    Publication Year: 2008, Page(s): c1
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  • list-reviewer

    Publication Year: 2008, Page(s): 2
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  • Preface

    Publication Year: 2008, Page(s):3 - 4
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    Freely Available from IEEE
  • Contents

    Publication Year: 2008, Page(s):5 - 10
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  • Electricity and biology

    Publication Year: 2008, Page(s):11 - 20
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    Life and electricity are closely connected. All membranes, first the plasma membrane but also intracellular membrane systems, are electrically charged. Virtually all functions of cells and tissues are somehow controlled by the electric field within membranes. It influences the conformation of membrane residual proteins and thereby the functionality of the membrane. Ionic channels in membranes can ... View full abstract»

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  • Smart system for distributed sensing

    Publication Year: 2008, Page(s):21 - 30
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1782 KB) | HTML iconHTML

    This paper describes ongoing work for implementing a distributed multi-robot system for measuring various physical properties of the environment in a coordinated manner. Modeling spatial distributions of physical quantities such as temperature, illumination, humidity, gas concentrations, or magnetic flux provides an opportunity to observe how these distributions change in time, how to utilise the ... View full abstract»

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  • Retinal image analysis aimed at blood vessel segmentation and neural layer detection

    Publication Year: 2008, Page(s):31 - 38
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (959 KB) | HTML iconHTML

    The lecture will summarise results of the long-term project concerning processing and analysis of multimodal retinal image data. The project is run at the Dept. of BME, FEEC, Brno University of Technology in frame of the DAR research centre coordinated by the Inst. of Information Theory and Automation, Cz.Ac.Sci. Prague, in cooperation with the Clinic of Ophthalmology, University Erlangen (D) and ... View full abstract»

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  • Direct current or flux control and predictive torque control in power electronics applications

    Publication Year: 2008, Page(s):39 - 50
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1145 KB) | HTML iconHTML

    In this paper, a generic approach to predictive control of inverter-fed loads, called ldquodirect controlrdquo, is presented. The controlled variable can be either current or flux, depending on the type of the load (e.g., passive or active). Nevertheless, in both cases the same basic principle is applied. The prediction algorithm dictates the inverterpsilas voltage space vector to be applied in or... View full abstract»

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  • Learning fault-tolerance from nature

    Publication Year: 2008, Page(s):51 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (115 KB) | HTML iconHTML

    In the last decade, there has been a considerable increase of interest in fault-tolerant computing due to dependability problems related to process scaling, embedded software, and ubiquitous computing. In this paper, we discuss an approach to fault-tolerance which is inspired by biological systems. Biological systems are capable of maintaining their functionality under a variety of genetic changes... View full abstract»

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  • Nanoscale electron devices: The untold technology story

    Publication Year: 2008, Page(s):59 - 69
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (382 KB) | HTML iconHTML

    Some critical (but little-recognized) aspects of nanoscale electron device technology are considered. It is noted that, according to history, nanoscale electron devices will have to address some convergence of an abundance and a scarcity. A major impediment to progress is the emergence of a variety of granularities - with the main problem being less the granularities themselves than the entrenched... View full abstract»

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  • Quantum mechanical transforms between x- and k-space as a signal processing problem

    Publication Year: 2008, Page(s):71 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (142 KB) | HTML iconHTML

    The quantum mechanics courses usually do not discuss the transforms between coordinate- and momentum- presentations relevant to the basic quantum well tasks. If we use instead momentum p the wavenumber k=p/h then those transforms are analogous to time-dependent versus frequency-dependent transforms in classical signal processing. The paper presents numerical calculations for single and multiple qu... View full abstract»

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  • Modeling of a carbon nanotube junction with ab-initio software VASP

    Publication Year: 2008, Page(s):75 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (494 KB) | HTML iconHTML

    The carbon nanotubes and fullerenes are the key structures of the modern nanotechnology and advanced infotechnology. A short history of relevant research is given including the generally unknown publications from 1950-ies. As a practical study problem the modeling results obtained with ab-initio software VASP for an armchair-zigzag nanotube junction (4,4)/(8,0) are discussed. View full abstract»

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  • Optimization of electrowetting electrodes: Analysis of the leakage current characteristics of various dielectric layers

    Publication Year: 2008, Page(s):79 - 82
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (959 KB) | HTML iconHTML

    Electrowetting is a phenomenon that has attracted much attention in recent years for application in lab-on-a-chip devices. The electrical control of contact angle can be used to transport liquid droplets by capillary forces. We present experimental work that aims to clarify the role played by the dielectric breakdown of surface coatings. The relation between electrowetting and dielectric breakdown... View full abstract»

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  • Dual material gate oxide stack symmetric double gate MOSFET: Improving short channel effects of nanoscale double gate MOSFET

    Publication Year: 2008, Page(s):83 - 86
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (277 KB) | HTML iconHTML

    In this paper, short channel effects of the sub-100nm modified symmetric double-gate MOSFET that made of dual material gates and oxide stack with high-k material on top of a SiO2 layer examined and compared with conventional symmetric double-gate MOSFET using two-dimensional (2-D) simulation. This structure reduces short channel effects (SCEs) such as drain-induced barrier lowering (DIB... View full abstract»

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  • Charge carrier transport in SiC Schottky interfaces: Shape factor approach

    Publication Year: 2008, Page(s):87 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB) | HTML iconHTML

    Modelling of SiC based Schottky interfaces using shape factor (SF) is a novel approach for the SiC Schottky interfaces. The determining of the behaviour of the charge carrier transport under influence of the change of parameters like impurity concentration, barrier height and ambient temperature is discussed. Unified handling methodology has been demonstrated. View full abstract»

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  • Electron microscopy study of contact layers in n-type 4H-SiC after diffusion welding

    Publication Year: 2008, Page(s):91 - 94
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2526 KB) | HTML iconHTML

    In the present work the results of transmission electron microscopy (TEM) and electron diffraction investigations of subcontact layers in n0-n- 4H-SiC epistructure after diffusion welding (DW) are given. TEM examinations show that at the boundary between aluminium and silicon carbide the interface layer of ~ 25 nm thickness exists and this layer is of strip character. The ima... View full abstract»

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  • Simulation of slow-wave structures using synergy of various methods

    Publication Year: 2008, Page(s):95 - 98
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (346 KB) | HTML iconHTML

    We propose to use the synergy of analytical and numerical methods for simulation of slow-wave structures in order to reveal properties of the structures and improve the quality of design. As an example, the multi-conductor method and the CST software package Microwave Studio are effectively used for solution of problems related to meander slow-wave structures. View full abstract»

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  • Electromagnetic field modeling using edge finite elements

    Publication Year: 2008, Page(s):99 - 102
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB) | HTML iconHTML

    Edge finite elements are typically used in many modern applications, where modeling of distribution of electromagnetic fields is required. These elements differ from nodal finite elements in the fact that they provide continuity of tangential components of the field variables across element interfaces while allowing discontinuity in normal components. This, in turn, eliminates the so-called spurio... View full abstract»

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  • Determination of the magnetic spectra of toroidal cores

    Publication Year: 2008, Page(s):103 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (130 KB) | HTML iconHTML

    The performance of design of inductors with ferrite cores is also dependent on the accuracy of assumed data about magnetic properties of cores. For toroidal cores it is shown that the magnetic spectra of ferrites and cores, manufactured from the ferrites, may differ essentially if cores cross-section dimensions are greater than the penetration depth of magnetic field. It is ascertained that relati... View full abstract»

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  • Simplified approach investigating non-linear transformations of ultrasound diagnostics signals

    Publication Year: 2008, Page(s):107 - 110
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (149 KB) | HTML iconHTML

    Progress of medical ultrasonic diagnostics systems and methods is strongly dependent on new research findings in non-linear interaction of waves and tissues. Advanced and complex solutions of non-linear ultrasound signals transformations in tissues are developed. Developments are based on derivation of second order differential equations, their calculations using finite elements or finite differen... View full abstract»

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  • High performance GaAs power diodes

    Publication Year: 2008, Page(s):111 - 114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB) | HTML iconHTML

    Films deposited with the Liquid Phase Epitaxy (LPE)technology on the monocristallic GaAs substrates for high voltage power p+-p-i-n-n+ GaAs structures has been developed. Proposed technological and hardware solutions of LPE allow the high efficiency of growing process of diode structures with defined ratings and high structural quality of epitaxial layers. The method and technology for fabrication... View full abstract»

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  • Charge-pump PLL with SC-loop filter for low frequency reference signal

    Publication Year: 2008, Page(s):115 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB) | HTML iconHTML

    A charge-pump phase-locked loop with a switched capacitor loop filter and kilohertz order reference with 0.35 mum high-voltage CMOS process is presented. The PLL is designed for a reference frequency range from 3 kHz to 10 kHz in temperature range from -40degC to +85degC and with 2.5 to 3.6 V supply. Simulations showed that the current consumption of the PLL is 7.3 muA with the 4 kHz reference fre... View full abstract»

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  • CMOS current source for shortened square wave waveforms

    Publication Year: 2008, Page(s):119 - 120
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB) | HTML iconHTML

    In many practical cases sinusoidal signals can be replaced with suitable approximations. Well-known alternative is the three level shortened square wave. By introducing more equally spaced levels, higher harmonics can be further reduced. This multilevel signal is easy to generate digitally and enables simple digital processing involving only additions and shifting. An efficient CMOS technology bas... View full abstract»

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  • Behavioral simulation of fractional-N PLL frequency synthesizers: Phase approach

    Publication Year: 2008, Page(s):121 - 124
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (138 KB) | HTML iconHTML

    Simulation results of a behavioral model of fractional-N PLL synthesizer are shown in this paper. It has the potential of reliable and fast evaluation of phase noise performance of a fractional-N charge-pump PLL. A method of overcoming the numerical inaccuracy due to finite sampling frequency has been applied and is briefly described. The technique allows setting the sampling period according to t... View full abstract»

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  • Integrated high-voltage PID controller

    Publication Year: 2008, Page(s):125 - 126
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (266 KB) | HTML iconHTML

    An integrated continuous time PID controller is presented in this paper. Only two operational amplifiers are used for the controller to minimize the power consumption and area, but also to enable complex zeros. A supply voltage up to 12 V is tolerated and, in order to enable tunable properties of the controller, four resistor matrices are used. Measured results of the controller are presented. View full abstract»

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