Now showing items 1-20 of 85

    • Nemlineáris áramkörszimuláció személyi számítógépen 

      Székely, Vladimir; Fábry G; Fiser J; Laczik Zs; Poppe, András (1987)
      A cikk egy népszerű személyi számítógéptípusra készített nemlineáris áramkörszimulációs programot mutat be. Bőséges ábraanyagával azt igyekszik érzékeltetni, hogy miképp aknázhatók ki a személyi számítógépek nyújtotta ...
    • High-Frequency Electro-Optical Model for MESFETs 

      Baranyi, András; Berceli, Tibor; Hilt, Attila; Ladvánszky, János (1993)
    • Modelling Electro-Optical Interaction in MESFETs 

      Berceli, Tibor; Baranyi, András; Hilt, Attila; Ladvánszky, János (1993-07-01)
      A modelling procedure is presented for MESFETs with both electrical and optical inputs. First a physical model is introduced for the illuminated MESFET. The actual circuit model with electrical and optical variables is ...
    • Dynamic Properties of Optically Controlled FET Amplifiers 

      Berceli, Tibor; Cabon, Beatrice; Hilt, Attila; Ho Quoc, Anh; Pic, Étienne; Tedjini, Smail (1994-11-23)
      The transmission of FET amplifiers can be controlled by a laser light illuminating the device. Due to the illumination the gain of the amplifíer is increased significantly. In this paper the dynamic properties of the gain ...
    • On Minimum Sensitivity Reflectometers 

      Ladvánszky, János; Hilt, Attila; Zoller, Vilmos; Csonka, István (1995)
      The equation f(x, x1, x2, x3)=f(y, y1, y2, y3) is considered that characterizes the relation between the measured reflection coefficient x, the calibrating reflection coefficients x1, x2, x3 and the corresponding values ...
    • Transmission and Distortion of an Optical-Microwave Modulation Transducer 

      Baranyi, András; Hilt, Attila (1995-08-31)
      The optical-microwave modulation transducer is a circuit transforming the intensity modulation of a lightwave to the modulation of a microwave carrier. In this paper using the linear parametric model of the transducer ...
    • Performance of Future Event Set Implementations 

      Lencse, Gábor (1996)
      Seven data structures were examined with simulation and compared to find out which one should be used to implement the Future Event Set of an event driven discrete event simulator. The number of key comparisons and pointer ...
    • A Millimeter Wave PLL Oscillator for Optical Receivers 

      Gerhátné Udvary, Eszter; Zólomy, Attila Imre; Hilt, Attila; Járó, Gábor; Mihály Sándor; Berceli, Tibor (1997)
      The design and experimental investigations of a harmonic microwave oscillator is presented. The transistor oscillator was designed to operate at the fundamental frequency with high third harmonic output. The final goal is ...
    • Microwave Distributed Amplifier in Hybrid Integrated Technology 

      Zólomy, Attila; Hilt, Attila; Baranyi, András; Járó, Gábor (1997)
      In the paper the gain-bandwidth relations of microwave distributed amplifiers are analyzed. It is shown that in case of proper realization corresponding to distributed amplifier (DA) requirements the amplifier gain and ...
    • Gain and Noise Optimization of an Optical Receiver Utilizing a Distributed Amplifier 

      Járó, Gábor; Berceli, Tibor; Hilt, Attila; Zólomy, Attila (1997)
      In wideband optical communications the bandwidth and the noise of optical receivers are crucial problems. The application of a distributed amplifier instead of a transimpedance amplifier in an optical receiver has the ...
    • Frequency Conversion Methods by Interferometer and Photodiode in Microwave Optical Links 

      Hilt, Attila; Maury, Ghislaine; Cabon, Beatrice; Vilcot, Anne; Berceli, Tibor (1997-08)
      Recently fiber optic links have been investigated by several authors for the transmission and distribution of microwave and millimeter-wave signals [1], [2]. For further signal processing, frequency conversion is necessary ...
    • Noise Properties of Optical Receiversusing Distributed Amplification 

      Járó, Gábor; Hilt, Attila; Zólomy, Attila; Berceli, Tibor (1997-08)
      ln wideband optical communications the bandwidth and the noise of optical receivers are crucial problems. The application of a distributed amplifier instead of a transimpedance amplifier in an optical receiver has the ...
    • New Topology for Distributed Amplifiers in Hybrid Integrated Technology 

      Zólomy, Attila; Hilt, Attila; Marozsák, Tamás; Járó, Gábor (1997-10-17)
      In this paper alternative circuit topologies for hybrid integrated distributed amplifiers (DA) are analyzed and compared. Improvement in the gain-bandwidth product and decrease in the gain ripple using the proposed new ...
    • Investigation of Direct Modulated Laser Diodes 

      Marozsák, Tamás; Hilt, Attila; Mihály, Sándor; Zólomy, Attila; Járó, Gábor (1997-10-17)
      Characterisation of direct modulated laser diodes has an important role in the design of microwave fiber optic links. Modulation bandwidth and electrical reflection was measured in GHz frequency range and applied for bias ...
    • Low Noise Optical Receiver with Multi-Octave Bandwidth 

      Zólomy, Attila; Berceli, Tibor; Járó, Gábor; Hilt, Attila; Marozsák, Tamás (1998-12)
      A new approach for the design and construction of low noise broadband optical receivers is presented utilizing distributed amplification based on hybrid integrated technology. Using extremely low noise PHEMTs as well as ...
    • Radio-Frequency Interference in Digital Communication Links 

      Hilt, Attila; Maury, Ghislaine; Cabon, Beatrice (1999-11-01)
      Transmission and reception of digitally modulated microwave (MW) and millimeter-wave (MMW) radio signals in point-to-point and point-to-multipoint systems are widely investigated [1-6]. This paper addresses the problem of ...
    • Mikromanipulátorok teleoperációs alkalmazása biotechnológiai kutatásokban 

      Urbancsek, Tamás; Lassó, András (2000)
      Három napjainkban dinamikusan fejlődő tudományterület, a teleoperáció, a mikrorobotika és a biotechnológia legújabb eredményeinek integrációjából született az a rendszer, melynek tervezését, megvalósítását és egy valós ...
    • Optical Information Transmission For Millimeter Wave Mobile Communications 

      Berceli, Tibor; Járó, Gábor; Marozsák, Tamás; Mihály Sándor; Gerhátné Udvary, Eszter; Varga Zoltán; Zólomy, Attila Imre (2000)
      A novel method is presented for optical information transmission in the millimeter mobile communications. The well-known methods in which the millimeter wave signal is distributed via a fiber have many drawbacks because ...
    • Eredmények a magyar nyelvű nagyszótáras kapcsolt-szavas gépi beszédfelismerésben 

      Szarvas M; Fegyó, Tibor; Mihajlik, Péter; Tatai, Péter (2001)
    • Noise and Gain Properties of Semiconductor Optical Amplifiers 

      Gerhátné Udvary, Eszter; Bánky, Tamás; Hilt, Attila; Marozsák, Tamás (2001)
      An experimental and theoretical study is presented for the transmission and noise characteristics of semiconductor optical amplifiers (SOAs). This device is very relevant in the novel optical ...