Exploració per autor "Fernández, Daniel"

Ara es mostren els items 1-14 de 14

    • 3D printed telescopes: an interesting tool for teaching Astronomy, Science and Technology 

      Macías, Roger; Marzoa Domínguez, Antonio; Casamor, Oriol; Soler, Joan; Fernández, Daniel (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      3D printing technologies experienced a huge evolution both in techniques and applications since its invention in the early 1980s. Fused Deposition Modelling (FDM) was the first term used to describe an additive manufacturing ...

    • 3D printed telescopes: an interesting tool for teaching Astronomy, Science and Technology 

      Macías Quesada, Roger; Marzoa Domínguez, Antonio; Casamor Martinell, Oriol; Soler Ruiz, Juan; Fernández, Daniel (Iniciativa Digital Politècnica, 2022)
      Text en actes de congrés
      Accés obert
      3D printing technologies experienced a huge evolution both in techniques and applications since its invention in the early 1980s. Fused Deposition Modelling (FDM) was the first term used to describe an additive manufacturing ...

    • A 3D printed f5 Newtonian telescope: Development of a student project for outreach, education, and dissemination 

      Macías Quesada, Roger; Marzoa Domínguez, Antonio; Casamor Martinell, Oriol; Rodríguez, Diego; Fernández, Daniel (Universitat Politècnica de Catalunya, 2022-09)
      Text en actes de congrés
      Accés obert
      An Engineering student´s Final Degree Project based on the design and manufacturing of a 3D printed telescope is presented. The project involves both optical, mechanical, and electronic design, the construction of the ...

    • A cmos-mems beol 2-axis lorentz-force magnetometer with device-level offset cancellation 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2020-10-19)
      Article
      Accés obert
      Lorentz-force Microelectromechanical Systems (MEMS) magnetometers have been proposed as a replacement for magnetometers currently used in consumer electronics market. Being MEMS devices, they can be manufactured in the ...

    • A comprehensive high-level model for CMOS-MEMS resonators 

      Banerji, Saoni; Fernández, Daniel; Madrenas Boadas, Jordi (2018-01-24)
      Article
      Accés obert
      This paper presents a behavioral modeling technique for CMOS microelectromechanical systems (MEMS) microresonators that enables simulation of an MEMS resonator model in Analog Hardware Description Language format within a ...

    • A mixed-signal control system for Lorentz-force resonant MEMS magnetometers 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2019-09-01)
      Article
      Accés obert
      This paper presents a mixed-signal closed-loop control system for Lorentz force resonant MEMS magnetometers. The control system contributes to 1) the automatic phase control of the loop, that allows start-up and keeps ...

    • A translinear, log-domain FPAA on standard CMOS technology 

      Fernández, Daniel; Martínez Alvarado, Luis Arturo; Madrenas Boadas, Jordi (2012-02)
      Article
      Accés restringit per política de l'editorial
      A field-programmable analog array (FPAA) using a standard-CMOS wide-dynamic-range translinear element (TE) is introduced. The FPAA configurable analog blocks (CABs) are based on a reconfigurable translinear cell (RTC), ...

    • An asynchronous finite-state-machine-based buck-boost converter for on-chip adaptive power supply 

      Fernández, Daniel; Madrenas Boadas, Jordi; Alarcón Cot, Eduardo José (2013-01)
      Article
      Accés restringit per política de l'editorial
      In this paper we present an asynchronous finite-state machine digital controller co-integrated with an on-chip non-inverting buck-boost power converter with dynamic signal-tracking capabilities. The mostly-digital controller ...

    • CMOS wireless hybrid transceiver powered by integrated photodiodes for ultra-low-power IoT applications 

      Nikseresht, Sasan; Fernández, Daniel; Cosp Vilella, Jordi; Selin Lorenzo, Irina; Madrenas Boadas, Jordi (2023-12-20)
      Article
      Accés obert
      In this article, a communication platform for a self-powered integrated light energy harvester based on a wireless hybrid transceiver is proposed. It consists of an optical receiver and a reconfigurable radio frequency ...

    • Design, fabrication, characterization and reliability study of CMOS-MEMS Lorentz-force magnetometers 

      Valle Fraga, Juan José; Sánchez Chiva, José María; Fernández, Daniel; Madrenas Boadas, Jordi (2022-09-16)
      Article
      Accés obert
      This article presents several design techniques to fabricate micro-electro-mechanical systems (MEMS) using standard complementary metal-oxide semiconductor (CMOS) processes. They were applied to fabricate high yield CMOS-MEMS ...

    • Experiments on MEMS Integration in 0.25 turn CMOS Process 

      Michalik, Piotr Jozef; Fernández, Daniel; Wietstruck, Mehmet; Kaynak, Mehmet; Madrenas Boadas, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2018-07-01)
      Article
      Accés obert
      In this paper, we share our practical experience gained during the development of CMOS-MEMS (Complementary Metal-Oxide Semiconductor Micro Electro Mechanical Systems) devices in IHP SG25 technology. The experimental ...

    • Fusion of WLAN and GNSS observables for positioning in urban areas: the position ambiguity 

      Fernández, Daniel; Barceló Arroyo, Francisco; Martín Escalona, Israel; Ciurana Adell, Marc; Jofre, Martí; Gutiérrez, Esteban (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes a positioning method that combines GPS pseudoranges and WLAN ranges when less than four GPS satellites are within sight. To enhance the positioning availability, a tight hybridization approach with both ...

    • Monolithic sensor integration in CMOS technologies 

      Fernández, Daniel; Michalik, Piotr; Valle Fraga, Juan José; Banerji, Saoni; Sánchez Chiva, José María; Madrenas Boadas, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2022-12-09)
      Article
      Accés obert
      Besides being mainstream for mixed-signal electronics, CMOS technology can be used to integrate micro-electromechanical system (MEMS) on a single die, taking advantage of the structures and materials available in feature ...

    • On the Resolution of position ambiguity when integrating GNSS and WLAN observables 

      Fernández, Daniel; Ciurana Adell, Marc; Jofre, Martí; Gutiérrez, Esteban; Chester, Ed; Barceló Arroyo, Francisco; Martín Escalona, Israel (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This contribution proposes a positioning system that fuses GPS pseudoranges and WLAN ranges when fewer than four GPS satellites are available. In order to enhance as much as possible the positioning availability, a tight ...