Now showing items 47-50 of 50

  • Traction Permanent Magnet Synchronous Motor Torque Control with Flux Weakening 

    Dolecek, R.; Novak, J.; Cerny, O. (Společnost pro radioelektronické inženýrství, 2009-12)
    The paper deals with analysis of dynamic behavior of a feedback flux weakening control of PMSM traction drive for light vehicles. The PMSM flux weakening is very important for traction drives. Two torque control structures ...
  • Two-Element PIFA Array Structure for Polarization Diversity in UMTS Mobile Phones 

    Ferrero, F.; Diallo, A.; Luxey, C.; Derat, B.; Hamouz, P.; Hazdra, P.; Rahola, J. (Společnost pro radioelektronické inženýrství, 2009-12)
    In this paper, we demonstrate the possibility to strongly modify the radiated fields of a UMTS handset by using a phased two-element PIFA array. The structure is composed of a 100x40 mm2 metallic ground plane acting as the ...
  • An Ultra-Low-Voltage and Ultra-Low-Power 2.4 GHz LNA Design 

    Liu, B.; Wang, C.; Ma, M.; Guo, S. (Společnost pro radioelektronické inženýrství, 2009-12)
    In this paper, ultra-low-voltage and ultra-low-power circuit techniques are presented for CMOS RF front-ends. By employing a modified current-reused architecture, the low-noise amplifier (LNA) can operate at a very low ...
  • Utilization of Birefringent Fiber as Sensor of Temperature Field Disturbance 

    Dvorak, F.; Maschke, J.; Vlcek, C. (Společnost pro radioelektronické inženýrství, 2009-12)
    The paper deals with utilization of induced birefringence sensitivity to temperature field in birefringent optical fibers. The propagating optical wave and optical fibers are described by means of coherency and Jones ...