Recent Submissions

  • A large signal nonlinear MODFET model from small signal S-parameters 

    O'Callaghan Castellà, Juan Manuel; Beyer, Jb (1989)
    Conference report
    Open Access
    A general technique for predicting the MODFET large signal performance has been developed. The technique is based entirely on experimental data (small signal S-parameters at different biased points) and therefore is ...
  • Requirements for noise parameter measurements in superconducting electronic systems 

    O'Callaghan Castellà, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 1991)
    Conference report
    Open Access
    General considerations on the measurement of noise parameters in highly mismatched systems are discussed. In particular, the problem of noise characterization of active superconducting microwave devices is addressed. A ...
  • PLL de microondas con tiempo de adquisición reducido 

    Berenguer Sau, Jordi; Artal, E.; Corbella Sanahuja, Ignasi; Comerón Tejero, Adolfo (1986)
    Conference report
    Open Access
    The behaviour of a PLL where the VCO is injection-locked to the reference frequency is studied. It is experimentally shown that the phase acquisition time can be reduced relative to the non-injection locked VCO situation. ...
  • Multiplicadores de frecuencia para receptores coherentes de microondas 

    Corbella Sanahuja, Ignasi; Berenguer Sau, Jordi; Pradell i Cara, Lluís; Comerón Tejero, Adolfo; Bará, J; Artal, E (1986)
    Conference report
    Open Access
    The design of frequency multipliers using PLL techniques is presented in this article. The theory is dicussed and also experimental results of a x43 frequency multiplier with an output frequency of 11.4 GHz in wich excellent ...
  • PLL de microondas con tiempo de adquisición reducido 

    Berenguer Sau, Jordi; Artal, E.; Corbella Sanahuja, Ignasi; Comerón Tejero, Adolfo (1986)
    Conference report
    Open Access
    The behaviour of a PLL where the VCO is injection-locked to the reference frequency is studied. It is experimentally shown that the phase acquisition time can be reduced relative to the non-injection locked VCO situation. ...
  • A microstrip low cost, high performance, intruder radar detector 

    de los Reyes, Elías; Elias Fusté, Antonio; Ferrando, Miguel; Corbella Sanahuja, Ignasi (Institute of Electrical and Electronics Engineers (IEEE), 1986)
    Conference report
    Open Access
    Doppler Radars operatinq as conventional intruder detectors at X band have been used in several security applications. However, almost all of them utilize heavy and bulky microwave subsystems in wavequide technoloqy. This ...
  • Amplificadores multietapa de bajo en las bandas de 20 y 30ghz 

    Artal, E; Corbella Sanahuja, Ignasi; Busquets, C; Pradell i Cara, Lluís (1989)
    Conference report
    Open Access
    Microstrip coupled lines technology has been used to design and built low noise amplifiers in 20 and 30 GHz bands. Active devices are GaAs MESFET and HEMT in chip form. The amplifiers have input and output waveguide ...
  • Caracterización de transistores de microondas mediante la técnica de calibración TRL 

    Pradell i Cara, Lluís; Artal, Eduardo; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Sabater, C. (1989)
    Conference report
    Open Access
    In this paper, the design of a Microstrip Test Fixture for TRL calibration is described. Experimental results for S-parameters measurement of a GaAs FET chip in the 3-22 GHz frequency range are presented. Repeatability of ...
  • Improvement of the pull in range and acquisition time of a microwave PLL system by injection locking the V.C.O 

    Berenguer Sau, Jordi; Bara, Javier; Artal, Eduardo; Corbella Sanahuja, Ignasi (1987)
    Conference report
    Open Access
    The requirements of large pull-in range and short acquisition time in microwave and millimeter wave phase locked oscillators are of great importance since the free running VCO frequency may be sorne tens of MHz off the ...
  • Radar Doppler de bajo coste como sensor de alarma en tecnología impresa 

    de los Reyes, Elías; Ferrando Bataller, Miquel; Elias Fusté, Antonio; Corbella Sanahuja, Ignasi (1981)
    Conference report
    Open Access
    General configurations for homodyne Doppler Radars for intruder detection are presented. A prototype on microstrip technology has been realized which exhibits excellent performances at a low component cost. This prototype ...

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