Now showing items 1-20 of 24

  • A microstrip low cost, high performance, intruder radar detector 

    de los Reyes, Elías; Elias Fusté, Antoni; 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 ...
  • Análisis de guiaondas anisótropas mediante el método de los elementos finitos 

    Nuño Fernández, Luis; Ferrando Bataller, Miquel (1994)
    Conference report
    Open Access
    Two numerically efficient procedures for the analysis of arbitrarily-shaped inhomogeneous and anisotropic waveguides showing no spurious modes have been considered. The first one is based on a transverse magnetic-field ...
  • Análisis de guiaondas mediante el método de los elementos finitos. Comparación entre distintos tipos de interpolación 

    Nuño Fernández, Luis; Ferrando Bataller, Miquel (1993)
    Conference report
    Open Access
    We use the Finite Elements Method to analize waveguides. Several weak and variational formulations of the problem are implemented. For each type of formulation we use besides different kinds of interpolation. The relative ...
  • Análisis de guías de onda de sección arbitraria usando el método de los elementos finitos 

    Nuño Fernández, Luis; Ferrando Bataller, Miquel (1992)
    Conference report
    Open Access
    The analysis of the homogeneous parabolic waveguides has been analyzed previously by other authors analytically. In this paper, the Finite Element Method has been applied to solve that problem. The comparison between those ...
  • Análisis de transiciones y obstáculos en guías de onda mediante el método de los elementos finitos 

    Nuño Fernández, Luis; Ferrando Bataller, Miquel (1992)
    Conference report
    Open Access
    Analysis of arbitrarily-shaped transitions in waveguides, such as inhomogeneous cavities and waveguide junctions, have been formulated by the Finite Element Method, using tetrahedral elements with four degrees of freedom. ...
  • Analysis of inhomogeneous and anisotropic waveguides by the finite element method 

    Ferrando Bataller, Miquel (IEEE Press, 1993)
    Conference report
    Open Access
    Two numerically efficient procedures for the analysis of arbitrarily-shaped inhomogeneous and anisotropic waveguides showing no spurious modes are considered. The first is based on a transverse magnetic-field formulation, ...
  • A RF-MEMS switchable CPW air-bridge 

    Contreras, Adrián; Casals Terré, Jasmina; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, Sabrina; Iannacci, Jacopo; Ribó, Miquel (2012)
    Conference lecture
    Open Access
    This work presents a new shunt-type ohmic contact RF-MEMS switch specifically designed as a switchable CPW air bridge. The switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective ...
  • Design of K-band slug tuners 

    de los Reyes, Elías (1981-06)
    Article
    Open Access
    An analysis of dual-slug line tuners is presented for two cases: distributed-transmission-line slugs and lumped-capacitance slugs. The effect of loss on tuner performance in the case of the transmission-line model is ...
  • Ecuación integral basada en la función de onda aplicación al análisis multimodal de postes pasantes en guía rectangular 

    Ferrando Bataller, Miquel (1997)
    Conference report
    Open Access
    Multimodal generalized admittance matrix is obtained using a new boundary-integral equation based on homogeneous wave equation solutions. Formulation is applied to obtain the scattering parameters for a post or a set of ...
  • Flow estimation in a steel pipe using guided waves 

    Quiroga, John; Quiroga, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda (2016-09-30)
    Article
    Open Access
    In this investigation, a flow rate estimation guided wave based scheme in pipes is proposed. The effect of the fluid over the propagation of longitudinal waves has been experimentally studied by using several laminar ...
  • Full-wave equivalent network representation for multiple arbitrarily shaped posts in H-plane waveguide 

    Ferrando Bataller, Miquel (IEEE Microwave Theory and Techniques Society, 1999-10)
    Article
    Open Access
    This paper presents a method for the analysis of arbitrary shape and composition posts in a waveguide. The method segments the problem into regions that are characterized by their generalized admittance matrices. Both an ...
  • General electromagnetic simulation tool to predict the microwave nonlinear response of planar, arbitrarily-shaped HTS structures 

    Parrón Granados, Josep; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Rius Casals, Juan Manuel; Duffo Ubeda, Núria; O'Callaghan Castellà, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-03-31)
    Article
    Open Access
    This work describes a simulation tool being developed at UPC to predict the microwave nonlinear behavior of planar superconducting structures with very few restrictions on the geometry of the planar layout. The software ...
  • Guided-to-leaky mode transition in uniaxial optical slab waveguides 

    Torner Sabata, Lluís; Recolons Martos, Jaume; Pérez Torres, Juan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1993-10-01)
    Article
    Open Access
    The guided-to-leaky hybrid mode transition in slab optical waveguides made on uniaxial crystals such as LiNbO3, or LiTaO 3, is analyzed. Two different guided-to-leaky transitions have been identified, namely the ordinary ...
  • Guided ultrasonic wave for monitoring stress levels in pipelines 

    Quiroga, Jabid; Villamizar Mejía, Rodolfo; Mujica Delgado, Luis Eduardo; Quiroga, John; Ruiz Ordóñez, Magda (2015)
    Conference report
    Open Access
  • Interfaz gráfica de usuario para el análisis de guías de onda y discontinuidades 

    Antuori Torres, Yan (Universitat Politècnica de Catalunya, 2008-06)
    Master thesis (pre-Bologna period)
    Open Access
    Se trata de una interfaz gráfica de usuario implementada a través de la biblioteca multiplataforma de elementos gráficos QT y el código de programación PYTHON. Consiste de una ventana principal a través de la cual ...
  • Multimode equivalent network representation for multiple arbitrarily shaped posts in H-plane waveguide 

    Ferrando Bataller, Miquel (1998)
    Conference report
    Open Access
    This paper presents a method for the calculation of the S-parameter of arbitrary shape and composition post or group of posts in a waveguide. The method segments the problem into regions that are characterized by their ...
  • New methods for determining the complex permittivity of different glucose concentrations by waveguide and antenna measurements at v-band 

    Cano García, Helena (Universitat Politècnica de Catalunya / King's College (University of London), 2013-09-10)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  King's College London
    [ANGLÈS] Diabetes is a metabolic disease that affects millions of people in the world. To control the status of this disease, diabetic patients have to measure continuously their glucose levels during all day. Nowadays, ...
  • Numerical analysis of wave propagation in hyperbolic waveguides 

    Pujol Closa, M Pilar (Universitat Politècnica de Catalunya, 2017-08-31)
    Master thesis
    36 months embargo
  • Reconfigurable multimodal bandpass filter based on RF-MEMS switchable CPW air-bridges 

    Contreras Bleda, Adrián; Casals Terré, Jasmina; Pradell i Cara, Lluís; Giacomozi, Flavio; Iannacci, Jacopo; Ribó i Pal, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    In this paper, a uniplanar RF-MEMS secondorder bandpass filter with reconfigurable centre frequency is presented. It is based on quarter-wavelength slotline resonators and CPW-slotline multimodal immittance inverters (MIIs), ...
  • Temperature robust PCA based stress monitoring approach 

    Quiroga, Jabid; Quiroga, John; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda (2016-09-30)
    Article
    Open Access
    In this paper, a guided wave temperature robust PCA-based stress monitoring methodology is proposed. It is based on the analysis of the longitudinal guided wave propagating along the path under stress. Slight changes in ...