• Comparison of Several Modes in Simple ARC Second-Order Filter 

    Dostal, T.; Rybin, A. I. (Společnost pro radioelektronické inženýrství, 1994-07)
    In this paper the popular, multiple-feedback, ARC single opamp, highpass second-order filter is proposed in several types of modes, namely voltage, current and hybrid ones. These modes are studied and compared in detail. ...
  • Psycho-Acoustic Masking Phenomena - Use in Digital Storage and Transmission of Sound 

    Bezucha, P. (Společnost pro radioelektronické inženýrství, 1994-07)
    This article deals with psycho-acoustic masking effects and outlines their exploitation in the digital storage and transmission of sound.
  • Multichannel Spline Interpolation of Discrete Signals 

    Mihalik, J.; Zavacky, J. (Společnost pro radioelektronické inženýrství, 1994-07)
    This paper presents the multichannel sampling of a continuous-time signal with division of its frequency band into a few sub-bands. It deals with the combination of this sampling method and spline interpolation with the ...
  • Waveguide Filters Supressing Higher-Order Passbands 

    Machac, J.; Menzel, W. (Společnost pro radioelektronické inženýrství, 1994-07)
    A new class of waveguide bandpass filters with suppressed higher-order passbands is described, designed, theoretically and experimentally verified. Methods of minimal autonomous blocks and mode matching are used for analysis. ...
  • Design of an L-Band Dual Feedhorn for the Purposes of Microwave Search for ExtraTerrensial Intelligence 

    Horowitz, P.; Gimersky, M. (Společnost pro radioelektronické inženýrství, 1994-07)
    Logic behind the design of a dual feedhorn for the 26-meter Cassegrainian antenna of the Agassiz Station-Harvard-Smithsonian Observatory is presented in the paper. Theoretically predicted arid measured results in the ...
  • A Model of Medium Depolarisation Effects on Polarisation Vector Position 

    Hanuska, J.; Moc, J. (Společnost pro radioelektronické inženýrství, 1994-07)
    The paper presents the results of modelling the influence of real atmosphere with precipitation clouds on the radar signal polarisation status. The relationship between the signal vector depolarisation shift value and the ...