• Resistively Loaded Dipole Characteristics 

    Hajach, P.; Hartansky, R. (Společnost pro radioelektronické inženýrství, 2003-04)
    Resistively loaded dipole is very often used to measuring the electromagnetic field in EMC testing. The dipole is a traveling wave antenna, where its resonance is eliminated. The paper includes the computation of the current ...
  • Site Diversity Gain Estimated from Rain Rate Records 

    Fiser, O. (Společnost pro radioelektronické inženýrství, 2003-04)
    The site diversity is used to mitigate the rain attenuation on satellite links. The attenuation is estimated through the rain rate-rain attenuation conversion based on the Assis-Einloft physical model in this study. Through ...
  • Algorithms for Fast Computing of the 3D-DCT Transform 

    Fryza, T.; Hanus, S. (Společnost pro radioelektronické inženýrství, 2003-04)
    The algorithm for video compression based on the Three-Dimensional Discrete Cosine Transform (3D-DCT) is presented. The original algorithm of the 3D-DCT has high time complexity. We propose several enhancements to the ...
  • Advanced Error-Control Coding Methods Enhance Reliability of Transmission and Storage Data Systems 

    Vlcek, K. (Společnost pro radioelektronické inženýrství, 2003-04)
    Iterative coding systems are currently being proposed and accepted for many future systems as next generation wireless transmission and storage systems. The text gives an overview of the state of the art in iterative decoded ...
  • Generation of the Narrow Band Digital Modulated Signals Using Quadrature Digital Upconverter 

    Kovar, P. (Společnost pro radioelektronické inženýrství, 2003-04)
    The paper deals with the modern approach to generation of digital modulated signals at intermediate frequency in digital way. The common digital modulator is based on analogue Quadrature modulator. The modern VLSI integrated ...
  • The Effect of Differential Driver Asymmetries on Common-Mode Frequency Spectrum 

    Navratil, V.; Leone, M. (Společnost pro radioelektronické inženýrství, 2003-04)
    A frequency spectra determination of the common-mode signal due to the differential driver asymmetries is presented. The analytical expression for the Fourier series is developed and the evaluations for different dependencies ...
  • Comparison of CAD for Rectangular Microstrip Antennas 

    Schejbal, V.; Novak, J.; Gregora, S. (Společnost pro radioelektronické inženýrství, 2003-04)
    Calculations of several cases for rectangular microstrip antennas using more accurate cavity model have been compared with the conventional cavity calculations, expressions generated by curve fitting to full wave solutions ...
  • Refractive Index Measurement at TV Tower Prague 

    Grabner, M.; Kvicera, V. (Společnost pro radioelektronické inženýrství, 2003-04)
    Propagation related parameters are used for design and frequency planning of microwave networks. Atmospheric refractive index is the important parameter that influences the propagation of electromagnetic waves during ...
  • Optimized State Model of Piecewise-Linear Dynamical Systems 

    Pospisil, J.; Kolka, Zdeněk; Hanus, S.; Michalek, V.; Brzobohaty, J. (Společnost pro radioelektronické inženýrství, 2003-04)
    The conditions for an optimized design of the second dynamical system having low eigenvalue sensitivities are directly derived. Their more general form is in accordance with the previous results obtained by using linear ...
  • Comparison of CAD Formulas, Method of Moments and Experiments for Rectangular Microstrip Antennas 

    Schejbal, V.; Raida, Zbyněk; Novacek, Z. (Společnost pro radioelektronické inženýrství, 2003-04)
    Calculations of several cases for rectangular microstrip patch antennas using more accurate cavity model have been compared with the conventional cavity calculations, expressions generated by curve fitting to full wave ...
  • New Second-Order Optimized Filter Design 

    Pospisil, J.; Kolka, Zdeněk; Hanus, S.; Dostal, T.; Brzobohaty, J. (Společnost pro radioelektronické inženýrství, 2003-04)
    Starting from the piecewise-linear (PWL) autonomous dynamical system optimized from the eigenvalue sensitivities viewpoint the corresponding optimized non-autonomous linear (single-input single-output) system is derived. ...