Now showing items 41-59 of 59

    • Ill conditioning loci in noise parameter determination 

      O'Callaghan Castellà, Juan Manuel; Alegret Ginesta, Alexandre; Pradell i Cara, Lluís; Corbella Sanahuja, Ignasi (IEE-INST ELEC ENG, 1996-08-01)
      Article
      Open Access
      An analysis of the problem of noise parameter determination is carried out. It is found that the mathematical problem is ill-posed if all the source reflection coefficients (Γs) used in the measurements fall onto a line, ...
    • Integration of Bluetooth Low Energy technology in a hearing aid 

      Vilà Rovira, Joan (Universitat Politècnica de Catalunya, 2018-03)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • Interferometric Receivers for Satellite Orbit Determination: Baseband Down-Conversion 

      Fusté Lara, Oriol (Universitat Politècnica de Catalunya, 2019-06)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • Measurement of permittivity at microwave frequencies using coplanar transmission lines 

      González Martínez, Pedro (Universitat Politècnica de Catalunya, 2017-01)
      Bachelor thesis
      Open Access
      This thesis studies the possibility of using CPW to measure the permittivity of materials. For this purpose, the material to be measured (MUT) is deposited on the CPW and measurements of S parameters are made from which ...
    • Measurements and analysis of microwave nonlinearities in ferroelectric thin film transmission lines 

      Mateu Mateu, Jordi; Booth, James C.; Schima, S. A.; Collado Gómez, Juan Carlos; Seron, David; O'Callaghan Castellà, Juan Manuel (Institute of Electrical and Electronics Engineers, 2006)
      Conference report
      Open Access
      This work evaluates the microwave nonlinear properties of ferroelectric BaSrTiO thin films by measuring the frequency response of several coplanar transmission lines and interdigital capacitor structures as a function of ...
    • Modelado de circuitos multimodales en entornos microstrip 

      Solà y Sabaté, Gerard (Universitat Politècnica de Catalunya, 2014-10-24)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] In this project, a method for modeling multimodal circuits in a simple and reliable way is explained. This method is applicable to any transmission line with N + 1 conductors (N coupled lines plus a reference ...
    • Nonconforming domain decomposition method for the flexible analysis of multiscale penetrable structures 

      Sekulic, Ivan; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (2018)
      Conference lecture
      Restricted access - publisher's policy
      The Poggio-Miller-Chan-Harrington-Wu-Tsai (PM- CHWT) integral equation discretized with the method of mo- ments (MoM) in conjunction with the edge-based Rao-Wilton- Glisson (RWG) set is normally used in the electromag ...
    • Passive devices in X-Band for space communications 

      Albajar Garduño, Marc (Universitat Politècnica de Catalunya, 2016-02-09)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • RF to microwave interferometer for cell detection in a microfluidic channel 

      Jiménez de la Cruz, Daniel (Universitat Politècnica de Catalunya, 2015-07)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Katholieke Universiteit te Leuven
      This thesis presents a two port connectorized RF to microwave interferometer for single cell detection and characterization in a microfluidic channel. To allow setting the operational frequency within a broad bandwidth ...
    • RF-MEMS switches for a full control of the propagating modes in uniplanar microwave circuits and their application to reconfigurable multimodal microwave filters 

      Contreras Lizarraga, Adrián Arturo; Casals Terré, Jasmina; Pradell i Cara, Lluís; Ribó i Pal, Miquel; Heredia Vega, Julio César; Giacomozzi, Flavio; Margesin, Benno (2017-03-29)
      Article
      Open Access
      In this paper, new RF-MEMS switch configurations are proposed to enable control of the propagating (even and odd) modes in multimodal CPW transmission structures. Specifically, a switchable air bridge (a switchable ...
    • Simplified polarization diversity heterodyne receiver for 1.25Gb/s cost-effective udWDM-PON 

      Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Polo Querol, Víctor; Prat Gomà, Josep Joan (2014)
      Conference report
      Restricted access - publisher's policy
      We propose a heterodyne receiver with a single-photodiode per polarization for ONU receiver in low-cost udWDM-PON. This grants polarization diversity operation showing a penalty of 6dB in sensitivity compared to a balanced ...
    • Software development tool for the nonlinear analysis of BAW resonators and filters 

      Perea Robles, Rafael (Universitat Politècnica de Catalunya, 2017-07-17)
      Master thesis
      Restricted access - confidentiality agreement
    • Software PARIS interferometric receiver (SPIR) 

      Arco Fernández, Juan Carlos (Universitat Politècnica de Catalunya, 2014-10-09)
      Master thesis
      Restricted access - author's decision
      [ENGLISH] The Earth Observation group at ICE (Institut de Ciències de l'Espai) has accomplished several campaigns aimed to demostrate the PARIS (PAssive Reflexive and Interferometry System) concept. This participation is ...
    • Third order intermodulation and thermal effects in electro-acoustic devices for communications 

      García Pastor, David (Universitat Politècnica de Catalunya, 2017-01-24)
      Master thesis
      Restricted access - confidentiality agreement
    • Third-Harmonic and intermodulation distortion in bulk acoustic-wave resonators 

      García Pastor, David; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Aigner, Robert (IEEE Microwave Theory and Techniques Society, 2019-12-17)
      Article
      Open Access
      This article discusses on the measured third-order intermodulation (IMD3) products and third harmonics (H3) appearing in a set of six different solidly mounted resonators (SMR) and bulk acoustic-wave (BAW) resonators with ...
    • Tone injection-based cancellation technique for nonlinear distortion reduction of modulated signals in BAW resonators 

      González Rodríguez, Marta; Collado Gómez, Juan Carlos; González Arbesú, José María; Mateu Mateu, Jordi; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (2020-01-01)
      Article
      Open Access
      A technique for the reduction of third-order intermodulation distortion (IMD3) occurring in bulk acoustic wave (BAW) filters and multiplexers is presented. The method consists of using the intrinsic second-order intermodulation ...
    • Virtual Antenna technology for mobile telephony 

      Argenté Nordbeck, Albert (Universitat Politècnica de Catalunya, 2014-07-24)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Fractus
      [ANGLÈS] This research studies decoupling networks for a MIMO 2x2 LTE700 antenna system. These networks reduce correlation between antennas in order to maximize the Tx/Rx capacity. The studied techniques and the resulting ...
    • X-band UAV-SAR optimization and validation 

      Royo, Miquel (Universitat Politècnica de Catalunya, 2018-07)
      Bachelor thesis
      Open Access
      This project consists on the improvement of an already validated System, as it is the work of a finished PhD Thesis. Due to the wide range of that thesis, many sub blocs need to be revaluated and optimized. That is the ...
    • X-parameters measurement techniques of 3-port devices 

      Fernández Jardí, Oscar (Universitat Politècnica de Catalunya, 2020-07)
      Bachelor thesis
      Open Access
      Nowadays, X parameters have become a very useful tool to measure devices with nonlinear behaviour due to S parameters shortcomings. Agilent Technologies developed and introduced this new functionality both in the N5242A ...