Zobrazují se záznamy 1-20 z 48854

    • Mathematika 

      Autor: Velíšek, František
      (Spolek posluchačú inženýrství na České vysoké škole technické v Praze, 1911)
    • Roztřiďovací systémy telefonních ústředen 

      Autor: Klika, Jaroslav
      (Ministersrvo pošt a telegrafů v Praze, 1929)
    • Theoretická elektrotechnika 

      Autor: Trnka, Zdeněk
      (Technicko-vědecké vydavatelství, 1952)
    • Vlastnosti hmot 

      Autor: Espe, Werner
      (Státní nakladatelství technické literatury, 1956)
    • Střídavé proudy 

      Autor: Hlávka, Jan
      (SNTL, 1958)
    • Technická termodynamika 

      Autor: Kalčík, Josef
      (Československá akademie věd, 1960)
    • Effect of feedback carrier excitation on LED external quantum efficiency 

      Autor: Kučera, L.; Macháč, J.; Míšek, J.
      (IEEE, 1982-02)
      Self-absorption of photons generated by prior luminescence processes affects both the steady-state and transient characteristics of LEDs. In this study we confine ourselves to one of the most important steadystate ...
    • Static model of DH laser 

      Autor: Macháč, J.
      (IEEE, 1983-04)
      A method of complex analysis of the double-heterostructure stripe-geometry laser, based on a new static model, is presented. The optical field distribution in the active region of the laser is described by the wave equation. ...
    • Contribution to the Ring-Core Fluxgate Theory 

      Autor: Ripka P.
      (The Royal Swedisch Academy of Sciences, 1989)
      Existing theories for open-core fluxgate are not fitting experimental results in the case of ring-core sensors. Simple description based on transfer functions which takes into account the interaction between two half-cores ...
    • Fluxgate sensor with increased homogeneity 

      Autor: Ripka, Pavel; Jireš, František; Macháček, Milan
      (IEEE, 1990-09)
      Several types of fluxgate sensors were developed for measuring microvariations of the earth's magnetic field. Sensor cores were produced by etching, leading to better geometric homogeneity and long-term stability. This ...
    • Analysis of discontinuities in waveguiding structures by MAB method 

      Autor: Macháč, J.
      (IEEE, 1992-08)
      The method of minimal autonomous blocks (MAB) is briefly described. A universal code computing reflectivity and transmissivity of discontinuities in waveguide structures was developed on the basis of the MAB method. This ...
    • On the design of waveguide-to-microstrip and waveguide-to-coplanar line transitions 

      Autor: Macháč, Jan; Menzel, Wolfgang
      (IEEE, 1993-09)
      New versions of the waveguide-to-microstrip and waveguide-to-coplanar line transitions are described and analyzed. The transitions differ from the standard ones by a probe in the shape of a rectangular patch. The structure ...
    • Waveguide bandpass filters with attenuation of higher-order passbands 

      Autor: Menzel, Wolfgang; Macháč, Jan
      (IEEE, 1993-09)
      A new method is proposed to provide additional attenuation to higher-order passbands of metal waveguide bandpass filters. To this end, shunt waveguide sections with cut-off frequencies are included into the filter structure. ...
    • La littérature tchéque et l'électrotechnique 

      Autor: Efmertová M.
      (Presses Universitaires de France, 1995)
      Článek pojednává o terminologické vývoji v elektrotechnice. Věnuje se též odrazu elektrotechniky v krásné literatuře.
    • Projektování mikropočítačových systémů 

      Autor: Janeček J.
      (Czech Technical University in Prague, 1995)
    • Short and Open Circuited Slot Line 

      Autor: Macháč, Jan; Zehentner, Ján; Menzel, Wolfgang
      (IEEE, 1995-07)
      A slot line terminated by the short and open end is analysed by the spectral domain method (SDM). The original process of Yang and Alexopoulos (1988) is modified by application of the piecewise sinusoidal functions only. ...
    • Load Impedances of Complex Slotline Terminations 

      Autor: Macháč, J.; Zehentner, J.; Menzel, W.
      (IEEE, 1995-09)
      Single slotline has gained new interest due to application in uniplanar circuits, antennas or active radiators, all these including slotline short circuits or even more complex terminations. This paper gives a new approach ...
    • Leakage Effects of Dominant and Higher Order Modes on Slotline 

      Autor: Macháč, Jan; Zehentner, Jan
      (IEEE, 1996-09)
      The properties of the slotline when the dominant bound or leaky wave propagates, together with the behaviour of new higher order modes are investigated. The frequency range in which the slotline transmits the bound wave ...
    • Using grammars for scene interpretation 

      Autor: Christensen, H.I.; Matas, J.; Kittler, J.
      (IEEE, 1996-09)
      A method that employs grammars to direct the inference process of a vision system that does interpretation of dynamic scenes is described. The system uses a set of qualitative image descriptors to drive the interpretation. ...