Now showing items 1-20 of 216

    • 3Cat-1 project: a multi-payload CubeSat for scientific experiments and technology demonstrators 

      Jové Casulleras, Roger; Araguz López, Carles; Via Ortega, Pol; Solanellas Bofarull, Arnau; Amézaga Sarries, Adrià; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Marí Barceló, Marc; Olivé Muñiz, Roger; Sáez Hernández, Alberto; Jané Abad, Jaume; Bou Balust, Elisenda; Iannazzo Soteras, Mario Enrique; Gorreta Mariné, Sergio; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Domínguez Pumar, Manuel; Alarcón Cot, Eduardo José; Ramos Castro, Juan José; Camps Carmona, Adriano José (2017)
      Article
      Open Access
      This article introduces 3 Cat-1, the first project of the Technical University of Catalonia to build and launch a nano-satellite. Its main scope is to develop, construct, assemble, test and launch into a low Earth orbit a ...
    • 3Cat-1: a multi-payload Cubesat-based scientific and technology demonstrator 

      Jové Casulleras, Roger; Camps Carmona, Adriano José; Ramos Castro, Juan José; Alarcón Cot, Eduardo José; Bou Balust, Elisenda; Carreño Luengo, Hugo; Amézaga Sarries, Adrià; Olivé Muñiz, Roger; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Araguz López, Carles; Marí Barceló, Marc; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel; Iannazzo Soteras, Mario Enrique (European Spatial Agengy (ESA), 2014)
      Conference lecture
      Open Access
    • A comparison of analytical models for resonant inductive coupling wireless power transfer 

      Bou Balust, Elisenda; Alarcón Cot, Eduardo José; Gutiérrez Cabello, Jordi (The Electromagnetics Academy, 2012)
      Conference report
      Open Access
      Recent research in wireless power transfer (WPT) using resonant inductive coupling has demonstrated very high e±ciencies (above 40%) at large distances compared to the antenna dimensions, which has exponentially increased ...
    • A comprehensive method to taxonomize mechanical energy harvesting technologies 

      Diez, P.L.; Gabilondo, I.; Alarcón Cot, Eduardo José; Moll Echeto, Francisco de Borja (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Traditional industry is experiencing a worldwide development with Industry 4.0. Wireless sensor networks (WSNs) have a main role in this revolution as an essential part of data acquisition. The way in which WSNs are powered ...
    • A design-oriented characterization framework for decentralized, distributed, autonomous systems: the nano-satellite swarm case 

      Araguz López, Carles; Closa, Marc; Bou Balust, Elisenda; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Restricted access - publisher's policy
      The design of autonomous operational schemes for distributed, decentralized systems is expected to bring multiple qualities to systems of this kind. One of their instances are Earth-observing swarms of nano-satellites, in ...
    • A design-oriented combined approach for bifurcation prediction in switched-mode power converters 

      El Aroudi, Abdelali; Rodríguez Vilamitjana, Enric; Leyva Grasa, Ramon; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2010-03)
      Article
      Restricted access - publisher's policy
      In this brief, two different approaches are combined for studying the stability of a buck switching power dc-dc converter and for predicting its bifurcations. Instability indexes derived from both approaches are combined ...
    • A frequency domain approach for controlling chaos in switching converters 

      Rodríguez Vilamitjana, Enric; Alarcón Cot, Eduardo José; Iu, H. H. C.; El Aroudi, Abdelali (2010)
      Conference report
      Open Access
      The purpose of this paper is the synthesis from the frequency domain standpoint of a controller for switching power converters with the aim to eliminate bifurcation and chaotic behavior. Firstly the paper analyzes the ...
    • A general, fault tolerant, adaptive, deadlock-free routing protocol for network-on-chip 

      Stroobant, Pieter; Abadal Cavallé, Sergi; Tavernier, Wouter; Alarcón Cot, Eduardo José; Colle, Didier; Pickavet, Mario (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      The paper presents a topology-agnostic greedy protocol for network-on-chip routing. The proposed routing algorithm can tolerate any number of permanent faults, and is proven to be deadlock-free. We introduce a specialized ...
    • A graphene based plasmonic antenna design for communication in the THz regime 

      Suessmeier, Christoph; Schaeffer, Stephan; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Stock, Daniel; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference lecture
      Restricted access - publisher's policy
      We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential µc and relaxation time t.
    • A grounded-output 5-switch bipolar buck-boost converter topology for switching power amplifiers 

      García Tormo, Albert; Poveda López, Alberto; Alarcón Cot, Eduardo José; Guinjoan Gispert, Francisco (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      This work presents a switching converter topology which can boost and step down the supply voltage and can deliver both positive and negative voltages to a grounded load (bipolar converter topology with non-floating output). ...
    • A highly-accurate low-power CMOS potentiostat for implantable biosensors 

      Razzaghpour, Milad; Rodriguez Duenas, Saul; Alarcón Cot, Eduardo José; Rusu, Ana (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      Current-mirror-based potentiostats suffer from systematic and random errors causing offset, gain and linearity error in reading out the sensor data. In this work, a new potentiostat topology is proposed to eliminate the ...
    • A MAC protocol for reliable broadcast communications in wireless network-on-chip 

      Mestres Sugrañes, Albert; Abadal Cavallé, Sergi; Torrellas, Josep; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Association for Computing Machinery (ACM), 2016)
      Conference report
      Restricted access - publisher's policy
      The Wireless Network-on-Chip (WNoC) paradigm holds considerable promise for the implementation of fast and efficient on-chip networks in manycore chips. Among other advantages, wireless communications provide natural ...
    • A machine learning-based approach for virtual network function modeling 

      Mestres Sugrañes, Albert; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Recent trends in networking are proposing the use of Machine Learning (ML) techniques for the control and operation of the network. The application of ML to networking brings several use-cases as well as challenges. The ...
    • A nonlinear time-varying map of a buck power-switching amplifier for wide band tracking applications 

      El Aroudi, Abdelali; Alarcón Cot, Eduardo José; Rodríguez Vilamitjana, Enric; Leyva Grasa, Ramon (Emerald, 2010)
      Article
      Restricted access - publisher's policy
      Purpose The purpose of this paper is to characterize the nonlinear dynamical behaviour of a buck-based power-switching amplifier controlled by fixed frequency and pulse width modulation with a proportional-integral ...
    • A PLL control for self-tuning of parallel wireless power transfer receivers utilizing switch-mode gyrator emulated inductors 

      Saad, M.A.; Martínez García, Herminio; Alarcón Cot, Eduardo José (2017)
      Conference lecture
      Open Access
      In multiple receivers wireless power transfer (WPT) systems, it is preferable to retune the resonant frequency of every receiver to the transmitter operating frequency in front of frequency mismatches. This paper discusses ...
    • A ripple-based design-oriented approach for predicting fast-scale instability in DC–DC switching power supplies 

      Rodríguez Vilamitjana, Enric; El Aroudi, Abdelali; Guinjoan Gispert, Francisco; Alarcón Cot, Eduardo José (2011-12)
      Article
      Restricted access - publisher's policy
      This paper presents a design-oriented analytical approach for predicting fast-scale instability in power electronics converters under voltage-mode control strategy. This approach is based on the use of the ripple amplitude ...
    • A vertical methodology for the design space exploration of graphene-enabled wireless communications 

      Abadal Cavallé, Sergi; Mestres Sugrañes, Albert; Llatser Martí, Ignacio; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Association for Computing Machinery (ACM), 2015)
      Conference report
      Restricted access - publisher's policy
      Graphene-based antennas (or shortly named, graphennas) are envisaged to be the cornerstone of novel wireless communication systems by virtue of their reduced size, in the micrometer range, and an expected radiation frequency ...
    • ABSense: sensing electromagnetic waves on metasurfaces via ambient compilation of full absorption 

      Liaskos, Christos; Pyrialakos, Georgios; Pitilakis, Alexandros; Abadal Cavallé, Sergi; Tsioliaridou, Ageliki; Tasolamprou, Anna; Tsilipakos, Odysseas; Kantartzis, Nikolaos V.; Ioannidis, Sotiris; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto; Kafesaki, Maria; Pitsillides, Andreas; Kossifos, Kypros; Georgiou, Julius; Akyildiz, Ian (Association for Computing Machinery (ACM), 2019)
      Conference report
      Open Access
      Metasurfaces (MS) constitute effective media for manipulating and transforming impinging EM waves. Related studies have explored a series of impactful MS capabilities and applications in areas such as wireless communications, ...
    • Active inductor-based tunable impedance matching network for RF power amplifier application 

      Saberkari, Alireza; Ziabakhsh, Saman; Martínez García, Herminio; Alarcón Cot, Eduardo José (2015-08)
      Article
      Open Access
      This paper presents the use of a new structure of active inductor named cascoded flipped-active inductor (CASFAI) in a T-type high-pass tunable output matching network of a class-E RF power amplifier (RFPA) to control the ...
    • Active inductor–based tunable impedance matching network for RF power amplifier application 

      Saberkari, Alireza; Ziabakhsh, Saman; Martínez García, Herminio; Alarcón Cot, Eduardo José (2016-01)
      Article
      Open Access