Now showing items 21-34 of 34

    • Measurement and Analysis of radio wave propagation in an indoor environment at 28 GHz 

      Cavero Carreras, Pol (Universitat Politècnica de Catalunya, 2022-07-05)
      Bachelor thesis
      Open Access
      Covenantee:   Aalto-yliopisto
      Millimeter wave frequencies are utilized in modern wireless systems to satisfy the increasing demand in bandwidth. This study aims to gain more knowledge of radio wave propagation in an entrance hall environment at 28 GHz ...
    • Medida de parámetros de ruido de dispositivos activos basada en fuente adaptada 

      Maya Sánchez, María del Carmen (Universitat Politècnica de Catalunya, 2003-12-15)
      Doctoral thesis
      Open Access
      En esta Tesis se utiliza una técnica de fuente adaptada para medir los parámetros de ruido de transistores de efecto campo, como MESFET y HEMT. Para ello, se ha implementado un sistema de medida en el margen de frecuencias ...
    • Microwave filtering amplifiers 

      Carrera Escalé, Pol (Universitat Politècnica de Catalunya, 2021-06)
      Master thesis
      Open Access
      Filtering microwave amplifiers have become a topic of interest because of the need for devices capable of isolating the system itself and avoiding interference from other systems. Key subsystems in communication receivers ...
    • Millimeter wave band reconfigurable circuits (from 30 to above 100 GHz) in BiCMOS-MEMS technology 

      Heredia Vega, Julio César (Universitat Politècnica de Catalunya, 2019-09-27)
      Doctoral thesis
      Open Access
      Nowadays, there has been an increased use of mobile devices and growth in the need for information, and because of this, wireless systems with higher data rates and wider bandwidths are demanded every year. Additionally, ...
    • MMIC K-band power amplifier design on GaN technology for space applications 

      Colado Vallina, Andrea (Universitat Politècnica de Catalunya, 2020-09)
      Master thesis
      Restricted access - confidentiality agreement
    • 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 ...
    • Multimodal Bandpass Filters Design 

      De La Rosa Ramirez, Lenin Manuel (Universitat Politècnica de Catalunya, 2015-09-10)
      Master thesis
      Open Access
      The work proposed on this master thesis has its background in the multimodal theory, in which coplanar waveguides structures propagate more than one fundamental mode: the even and the odd mode, and it’s the iteration between ...
    • Multimodal microwave filters 

      Contreras Lizarraga, Adrián Arturo (Universitat Politècnica de Catalunya, 2013-11-29)
      Doctoral thesis
      Open Access
      This thesis presents the conception, design and implementation of new topologies of multimodal microwave resonators and filters, using a combination of uniplanar technologies such as coplanar waveguide (CPW), coplanar ...
    • Reconfigurable high efficiency class-F power amplifier using CMOS-MEMS technology 

      Gilasgar, Mitra (Universitat Politècnica de Catalunya, 2017-09-08)
      Doctoral thesis
      Open Access
      The increasing demand for wireless products to be part of our daily lives brings the need for longer battery lifetime, smaller size and lower cost. To increase battery lifetime, high efficiency power amplifiers (PAs) are ...
    • RFID Antenna Design Process for Brain Surgical Prosthesis 

      Calvo Rojas, Christian (Universitat Politècnica de Catalunya, 2023-07-07)
      Master thesis
      Restricted access - confidentiality agreement
      This document details the design of a Passive UHF RFID Temperature Sensing Antenna Tag, integrated into biocompatible material, to incorporate within a brain surgical prosthesis. This wireless and non-invasive RFID device ...
    • Sistema de generació i recepció per a la mesura de senyals de RF amb modulacions i codificacions digitals 

      Vergés Pérez, Roger (Universitat Politècnica de Catalunya, 2019-06)
      Bachelor thesis
      Open Access
      The world of telecommunications is constantly growing and there is an increasing need of systems able to measure the response of new devices to digitally modulated signals. This project develops a remote control system to ...
    • Ultra Low-Noise L-band amplifier design for space applications 

      Monill I Homs, Albert (Universitat Politècnica de Catalunya, 2021-01-20)
      Master thesis
      Restricted access - confidentiality agreement
    • 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 ...
    • Xarxa de microones sintonitzadora multimodal reconfigurable 

      Ribera Graells, Adrià (Universitat Politècnica de Catalunya, 2013-12-04)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] Nowadays, the matching networks are essential components in front-end architectures for microwave communication systems operating up several gigahertzes. Due to the increase of communication standards in multiband ...