Browsing 2012/1 by Issue Date

Now showing items 1-20 of 71

  • Effects of Length and Diameter of Open-Ended Coaxial Sensor on its Reflection Coefficient 

    You, K. Y.; Salleh, J.; Abbas, Z. (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper presents a calibration technique for a coaxial sensor using a transmission signal approach. The sensor was fabricated from commercially available RG402/U and RG405/U semi-rigid coaxial cable. The length of the ...

  • Audible Aliasing Distortion in Digital Audio Synthesis 

    Schimmel, Jiri (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper deals with aliasing distortion in digital audio signal synthesis of classic periodic waveforms with infinite Fourier series, for electronic musical instruments. When these waveforms are generated in the digital ...

  • High Power Solid State Retrofit Lamp Thermal Characterization and Modeling 

    Jakovenko, Jiri; Formanek, Jan; Janicek, Vladimir; Husak, Miroslav; Werkhoven, Robert (Společnost pro radioelektronické inženýrství, 2012-04)
    Thermal and thermo-mechanical modeling and characterization of solid state lightening (SSL) retrofit LED lamp are presented in this paper. Paramount importance is to design SSL lamps for reliability, in which thermal and ...

  • Current-mode Biquadratic Universal Filter Design with Two Terminal Unity Gain Cells 

    Alpaslan, Halil; Yuce, Erkan (Společnost pro radioelektronické inženýrství, 2012-04)
    A grounded parallel lossy active inductor and two current-mode (CM) universal filters are presented in this paper. All the circuits use two voltage followers (VFs) and a current follower (CF). The parallel lossy active ...

  • Sub-wavelength Lithography and Variability Aware SRAM Characterization 

    Dobrovolny, Petr; Miranda, Miguel; Zuber, Paul (Společnost pro radioelektronické inženýrství, 2012-04)
    With shrinking of minimum feature size of advanced technology nodes, the impact of litho process variations on the resulting electrical parameters of printed circuits dramatically increases. Litho process variations ...

  • The Study of Properties of n-D Analytic Signals and Their Spectra in Complex and Hypercomplex Domains 

    Snopek, Kajetana Marta (Společnost pro radioelektronické inženýrství, 2012-04)
    In the paper, two various representations of a n-dimensional (n-D) real signal u(x1,x2,…,xn) are investigated. The first one is the n-D complex analytic signal with a single-orthant spectrum defined by Hahn in 1992 as the ...

  • The Modelling of Stereoscopic 3D Scene Acquisition 

    Hasmanda, Martin; Riha, Kamil (Společnost pro radioelektronické inženýrství, 2012-04)
    The main goal of this work is to find a suitable method for calculating the best setting of a stereo pair of cameras that are viewing the scene to enable spatial imaging. The method is based on a geometric model of a stereo ...

  • New Universal Current-mode Biquad Using Only Three ZC-CFTAs 

    Singh, Bhopendra; Singh, Abdhesh Kumar; Senani, Raj (Společnost pro radioelektronické inženýrství, 2012-04)
    The objective of this paper is to present a new universal Current-mode biquad capable of providing all the five basic filter functions, namely, low pass (LP), Band pass (BP), high pass (HP), Band reject (BR) and all pass ...

  • Improved Depth Map Estimation from Stereo Images based on Hybrid Method 

    Kamencay, Patrik; Breznan, Martin; Jarina, Roman; Lukac, Peter; Zachariasova, Martina (Společnost pro radioelektronické inženýrství, 2012-04)
    In this paper, a stereo matching algorithm based on image segments is presented. We propose the hybrid segmentation algorithm that is based on a combination of the Belief Propagation and Mean Shift algorithms with aim to ...

  • Measurement and Analysis of Real Imaging Systems 

    Mojzis, Frantisek; Svihlik, Jan; Fliegel, Karel; Knazovicka, Lenka; Jerhotova, Eva (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper is devoted to statistical analysis of noise generated in real imaging systems and noise suppression methods. The introductory part is focused on description of imaging systems, image degradations, and noise types ...

  • Distributed Recognition of Reference Nodes for Wireless Sensor Network Localization 

    Simek, Milan; Moravek, Patrik; Komosny, Dan; Dusik, Matej (Společnost pro radioelektronické inženýrství, 2012-04)
    All known localization techniques for wireless sensor and ad-hoc networks require certain set of reference nodes being used for position estimation. The anchor-free techniques in contrast to anchor-based do not require ...

  • An Experimental and Numerical Study of the Humidity Effect on the Stability of a Capacitive Ceramic Pressure Sensor 

    Zarnik, Marina Santo; Belavic, Dark (Společnost pro radioelektronické inženýrství, 2012-04)
    The effect of the humidity of the surrounding atmosphere on the characteristics of capacitive structures is a known problem for capacitive gas-pressure sensors. However, the use of a differential mode of operation can ...

  • Overview of Parallel Platforms for Common High Performance Computing 

    Fryza, Tomas; Svobodova, Jitka; Adamec, Filip; Marsalek, Roman; Prokopec, Jan (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper deals with various parallel platforms used for high performance computing in the signal processing domain. More precisely, the methods exploiting the multicores central processing units such as message passing ...

  • Comments and Remarks over Classic Linear Loop-Gain Method for Oscillator Design and Analysis. New Proposed Method Based on NDF/RRT 

    Luis Jimenez-Martin, Jose; Gonzalez-Posadas, Vicente; Parra-Cerrada, Angel; Enrique Garcia-Munoz, Luis; Segovia-Vargas, Daniel (Společnost pro radioelektronické inženýrství, 2012-04)
    Present paper describes a new method for designing oscillators based on the Normalized Determinant Function (NDF) and Return Relations (RRT ). First a review of the loop-gain method will be performed, showing pros, cons ...

  • New CMOS Realization of Voltage Differencing Buffered Amplifier and Its Biquad Filter Applications 

    Kacar, Firat; Yesil, Abdullah; Noori, Abbas (Společnost pro radioelektronické inženýrství, 2012-04)
    In this paper, new biquad filter configuration using a recently introduced active element, namely Voltage Differencing Buffered Amplifier (VDBA), is proposed. This block has high impedance input terminals and low impedance ...

  • Immediate Analysis of Periodic Steady States in Switched DC-DC Converters via SPICE 

    Biolek, Dalibor; Biolkova, Viera; Kolka, Zdenek (Společnost pro radioelektronické inženýrství, 2012-04)
    The method of immediate analysis of periodic steady states in switched DC-DC converters operating in the continuous current mode is described. The initial conditions, which correspond to the periodic steady state, are found ...

  • Reliable and Efficient Procedure for Steady-State Analysis of Nonautonomous and Autonomous Systems 

    Dobes, Josef; Biolkova, Viera (Společnost pro radioelektronické inženýrství, 2012-04)
    The majority of contemporary design tools do not still contain steady-state algorithms, especially for the autonomous systems. This is mainly caused by insufficient accuracy of the algorithm for numerical integration, but ...

  • MATLAB-based Applications for Image Processing and Image Quality Assessment – Part II: Experimental Results 

    Krasula, Lukas; Klima, Milos; Rogard, Eric; Jeanblanc, Edouard (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper provides an overview of some possible usage of the software described in the Part I. It contains the real examples of image quality improvement, distortion simulations, objective and subjective quality assessment ...

  • Voltage-Mode Highpass, Bandpass, Lowpass and Notch Biquadratic Filters Using Single DDCC 

    Chiu, Wei-Yuan; Horng, Jiun-Wei (Společnost pro radioelektronické inženýrství, 2012-04)
    A new voltage-mode multifunction biquadratic filter using one differential difference current conveyor (DDCC), two grounded capacitors and three resistors is presented. The proposed circuit offers the following attractive ...

  • A Contribution to Nyquist-Rate ADC Modeling - Detailed Algorithm Description 

    Zidek, Jan; Subrt, Ondrej; Valenta, Milan; Martinek, Pravoslav (Společnost pro radioelektronické inženýrství, 2012-04)
    In this article, the innovative ADC modeling algorithm is described. It is well suitable for nyquist-rate ADC error back annotation. This algorithm is the next step of building a support tool for IC design engineers. The ...