Eficiència energètica en computació, comunicació i infraestructures (xarxes de sensors, processadors multi-nucli, constel·lacions de satèl·lits petits, xarxes de distribució energètica), mitjançant arquitectures, circuits i dispositius de gestió d'energia, des de circuits integrats de gestió d'energia, captació d'energia i transferència sense fil d'energia, passant per models i control de sistemes de conversió eficient de potència, fins a sistemes d'energia renovables i microxarxes.

Our research activity has hitherto been focused on energy processing and integrated circuits, encompassing CMOS technologies for future-generation multicore processors and RF transmitters, as well as new devices for exploring ultimate energy density limits. These activities have been driven by ultra-low-power battery-operated devices that are now migrating into energy-harvesting-enabled wireless sensor networks and pushing down scalability limits through the concurrence of new devices (More than Moore, gallium nitride or GaN and graphene), circuit and system perspectives with the aim of a transversal impact to various applications, namely, downscaled portable terminals and distributed sensors for wireless monitoring and practically all applications within the integrated systems and circuits area. New challenges include wireless networks-on-chip for next-generation many-core processors for high-performance computing, nano-satellite swarms, wireless energy transfer and smart grids.

Our research activity has hitherto been focused on energy processing and integrated circuits, encompassing CMOS technologies for future-generation multicore processors and RF transmitters, as well as new devices for exploring ultimate energy density limits. These activities have been driven by ultra-low-power battery-operated devices that are now migrating into energy-harvesting-enabled wireless sensor networks and pushing down scalability limits through the concurrence of new devices (More than Moore, gallium nitride or GaN and graphene), circuit and system perspectives with the aim of a transversal impact to various applications, namely, downscaled portable terminals and distributed sensors for wireless monitoring and practically all applications within the integrated systems and circuits area. New challenges include wireless networks-on-chip for next-generation many-core processors for high-performance computing, nano-satellite swarms, wireless energy transfer and smart grids.

Recent Submissions

  • A 3–5-GHz, 385–540-ps CMOS true time delay element for ultra-wideband antenna arrays 

    Aghazadeh Dafsari, Seyed Rasoul; Martínez García, Herminio; Barajas Ojeda, Enrique; Saberkari, Alireza (Elsevier, 2022-05-01)
    Article
    Restricted access - publisher's policy
    This paper proposes an all-pass filter-based true time delay (TTD) element covering a 3–5-GHz ultra-wideband (UWB) frequency. The proposed TTD element designed in a standard 0.18-µm CMOS technology achieves a tunable delay ...
  • Capacitorless voltage regulator devoted to power management 

    Martínez García, Herminio; García Vílchez, Encarnación (Vienna University of Technology, 2020)
    Conference report
    Open Access
    This article aims to present the design of a 4.5-V, 450-mA low drop-out (LDO) voltage linear regulator based on a two-stage cascoded operational transconductance amplifier (OTA) as error amplifier. The aforementioned ...
  • Capacitorless low-dropout regulator for power management applications 

    Martínez García, Herminio; García Vílchez, Encarnación (2021)
    Conference report
    Open Access
    This article aims to present the design of a 4.5-V, 450-mA low drop-out (LDO) voltage linear regulator based on a two-stage cascoded operational transconductance amplifier (OTA) as error amplifier. The aforementioned ...
  • Non-external capacitor LDO regulator for power management applications 

    Martínez García, Herminio; García Vílchez, Encarnación (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Open Access
    This article aims to present the design of a 4.5-V, 450-mA low drop-out (LDO) voltage linear regulator based on a two-stage cascoded operational transconductance amplifier (OTA) as error amplifier. The aforementioned ...
  • Improvement of the PF using symmetrical angle switched single- & three-phase rectifiers in micro hydro power plants 

    Bory Prevez, Henry; Martínez García, Herminio; Vazquez Seisdedos, Luis; García Vílchez, Encarnación (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Open Access
    Micro-size hydro power plants (µHPPs) are commonly used at remote areas to supply islanded AC micro-grids. A typical way to control grid frequency is to manipulate active power dissipated in ballast loads by AC/AC converters. ...
  • LDO regulator with no external capacitor for power management applications 

    Martínez García, Herminio; García Vílchez, Encarnación (2020)
    Conference report
    Open Access
    This article aims to present the design of a 4.5-V, 450-mA low drop-out (LDO) voltage linear regulator based on a two-stage cascoded operational transconductance amplifier (OTA) as error amplifier. The aforementioned ...
  • Parametric filter with programmability for data acquisition 

    Martínez García, Herminio; García Vílchez, Encarnación (2020)
    Conference report
    Open Access
    Audio filtering systems are used in commercial applications involving equalizers. However, some of the topologies used can be modified to be used in audio signal treatment applications. Parametric filter topologies allow ...
  • A comprehensive review of control strategies and optimization methods for individual and community microgrids 

    Salehi, Navid; Martínez García, Herminio; Velasco Quesada, Guillermo; Guerrero, Josep Maria (Institute of Electrical and Electronics Engineers (IEEE), 2022-01-13)
    Article
    Open Access
    Community Microgrid offers effective energy harvesting from distributed energy resources and efficient energy consumption by employing an energy management system (EMS). Therefore, the collaborative microgrids are essentially ...
  • Fuzzy-based energy management system for isolated microgrids using generation and demand forecast 

    Rodríguez, Mauricio; Arcos Aviles, Diego Gustavo; Llanos, Jacqueline; Salazar, Antonio; Guinjoan Gispert, Francisco; Motoasca, Emilia; Martínez, Wilmar (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Restricted access - publisher's policy
    Energy solutions based on sustainable microgrids have been increasing since isolated areas with difficult access can benefit from these feasible solutions. In this context, this paper presents the design of an energy ...
  • Combined method of flow-reduced dump load for frequency control of an autonomous micro-hydropower in AC microgrids 

    Peña Pupo, Leonardo; Martínez García, Herminio; García Vílchez, Encarnación; Fariñas Wong, Ernesto Y.; Núñez Álvarez, José R. (2021-12-02)
    Article
    Open Access
    Nowadays, microgrids (MGs) play a crucial role in modern power systems due to possibility of integrating renewable energies into grid-connected or islanded power systems. The Load Frequency Control (LFC) is an issue of ...
  • Automated chlorine dosage in a simulated drinking water treatment plant: a real case study 

    Gámiz Caro, Javier Francisco; Grau Saldes, Antoni; Martínez García, Herminio; Bolea Monte, Yolanda (Multidisciplinary Digital Publishing Institute (MDPI), 2021-11)
    Part of book or chapter of book
    Open Access
    In recent decades, increasing attention has been paid to the sustainability of products and processes, including activities aimed at environmental protection, site reclamation or treatment of contaminated ef¿uents, as well ...
  • Adjustment of the Fuzzy Logic controller parameters of the energy management strategy of a grid-tied domestic electro-thermal microgrid using the Cuckoo search algorithm 

    Arcos Aviles, Diego Gustavo; García Gutiérrez, Gabriel; Guinjoan Gispert, Francisco; Carrera, Enrique; Pascual Miqueleiz, Julio; Ayala Taco, Paul; Marroyo Palomo, Luis; Motoasca, Emilia (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Restricted access - publisher's policy
    During the last century, population growth, together with economic development, has considerably increased the energy demand and, although renewable energies are becoming an alternative, still total energy supply is mainly ...

View more