Grupos Investigadores

Miembros del Grupo

Estevez Hidalgo
Villa González

Líneas de Investigación

  • Software y Hardware de instrumentación
  • Simulación y Caracterización electromagnética
  • Sensores inalámbricos RFID y chipless
  • Sensores inalámbricos
  • Fabricación de sensores
  • Diseño y caracterización de antenas

Palabras Clave

  • Wireless chipless sensors
  • Wireless RFID sensors
  • Instrumentation
  • Hardware and software
  • Electromagnetic simulation
  • Antenna design

Publicaciones Científicas desde 2018

  • Autores: Ortego, I.; Rezola Garciandía, Ainhoa; Gao, Y.; et al.
    ISSN 2076-3417 Vol.11 N° 13 2021 págs. 6032
    In this work, the optimum homogeneous phantom size for an equivalent whole-body electromagnetic (EM) modeling is calculated. This will enable the simple characterization of plane wave EM attenuation and far-field link budgets in Active Medical Implant (AMI) applications in the core region of the body for Industrial, Scientific, Medical and MedRadio frequency bands. A computational analysis is done to determine the optimum size in which a minimum phantom size reliably represents a whole-body situation for the corresponding frequency of operation, saving computer and laboratory resources. After the definition of a converge criterion, the computed minimum phantom size for subcutaneous applications, 0-10 mm insertion depth, is 355 x 160 x 255 mm(3) for 402 MHz and 868 MHz and a cube with a side of 100 mm and 50 mm for 2.45 GHz and 5.8 GHz, respectively. For deep AMI applications, 10-50 mm insertion depth, the dimensions are 355 x 260 x 255 mm(3) for 402 MHz and 868 MHz, and a cube with a side of 200 mm and 150 mm for 2.45 GHz and 5.8 GHz, respectively. A significant reduction in both computational and manufacturing resources for phantom development is thereby achieved. The verification of the model is performed by field measurements in phantoms made by aqueous solutions with sugar.
  • Autores: Valderas Gázquez, Daniel (Autor de correspondencia); Sancho Seuma, Juan Ignacio; Benli, K.; et al.
    ISSN 0018-9545 Vol.70 N° 6 2021 págs. 5592 - 5604
    This paper presents a model to anticipate the impact of Eddy Current Brakes (ECBs) installed in high-speed trains on the readouts of rail-side wheel sensors. The purpose is to anticipate false positive readouts of train wheels when traversing, one of the main obstacles for full ECB deployment. The ECB type EWB 154 from Knorr-Bremse and Wheel Sensor types RSR180 and RSR123 from Frauscher Sensor Technology are represented in a comprehensive model, integrating LTSpice and CST Microwave Studio. The wheel sensor predicted readout error is 4% compared to measurements when DC current is not applied to the ECB (passive case). It is demonstrated that the RSR180 is not compatible with ECBs, whereas the RSR123 is. The impact of active (DC current fed) brakes is analyzed when performing running tests with a high-speed ICE 3 train equipped with ECBs. The model is adjusted to study the saturation of the rail and ECB pole cores. The extra damping of the wheel sensor fingerprint is modeled by an extra 6% drop that may well be applicable to passive tests in a laboratory setting to shift to active tests without actually performing them. In this way, cost and time would be saved. Based on the model outcomes, a test bench is recommended for laboratory tests to emulate active behavior.
  • Autores: Villa, F. (Autor de correspondencia); Cortes, I.; Urain, A.; et al.
    ISSN 1045-9243 Vol.61 N° 4 2019 págs. 90 - 96
    This article presents the design of a complete radio system receiver to detect, in real time, the direction of arrival (DOA) of an incoming industrial, scientific, and medical (ISM)-band signal at 5.8 GHz. When a transmitter continuously sends a binary phase-shift keying (BPSK), modulated pseudo-noise (PN) code, the receiver estimates the DOA based on the received signal strength (RSS) and performs the channel sounding. The device that we describe includes a pattern-reconfigurable monopole antenna array, a front end, and a systemon-module (SOM). The SOM controls the antenna's main lobe direction by positive-intrinsic-negative (p-i-n) diode switching, configures the front-end modules, completes the data acquisition, and performs the digital signal processing (DSP) for the DOA estimation. The system has an average DOA resolution of 90° in the horizontal plane, with a success rate higher than 90%. It is presented as an educational platform for electrical engineering undergraduate and M.S. degree students.
  • Autores: Sancho Seuma, Juan Ignacio (Autor de correspondencia); Pérez Hernández, Noemí; de Nó Lengaran, Joaquín; et al.
    Revista: SENSORS
    ISSN 1424-8220 Vol.19 N° 23 2019
    Inductor-capacitor (LC) passive wireless sensors are widely used for remote sensing. These devices are limited in applications where multiparameter sensing is required, because of the mutual coupling between neighboring sensors. This article presents two effective decoupling techniques for multiparameter sensing, based on partially overlapped sensors and decoupling coils, which, when combined, reduce the mutual coupling between sensors to near zero. A multiparameter LC sensor prototype with these two decoupling mechanisms has been designed, simulated, and measured. This prototype is capable of simultaneously measuring four parameters. The measurements demonstrate that the changes in capacitance in one individual sensor do not affect the measurements of the other sensors. This principle has been applied to simultaneous wear sensing using four identical wear sensors.

Proyectos desde 2018

  • Título: Wireless Industrial Systems for Extreme Enviroments Investigación en sistemas inalámbricos para entornos hostiles de temperatura y físicos. Proyectos I+D Empresarial (DFG. 2022)
    Código de expediente: 2022-CIEN-000081-01
    Investigador principal: DANIEL VALDERAS GAZQUEZ.
    Convocatoria: Programa Red Guipuzcoana de Ciencia, Tecnología e Innovación 2022
    Fecha de inicio: 05-05-2022
    Fecha fin: 04-05-2024
    Importe concedido: 0
    Fondos FEDER: NO
  • Título: Aislamiento entre antenas con metamateriales para comunicaciones inalámbricas multiestandar en vehículos - ISOLAN (Programa Red guipuzcoana de Ciencia, Tecnología e Innovación 2021)
    Código de expediente: 2021-CIEN-000105-01
    Investigador principal: NOEMI PEREZ HERNANDEZ.
    Convocatoria: Programa Red guipuzcoana de Ciencia, Tecnología e Innovación_DFG 2021
    Fecha de inicio: 09-06-2021
    Fecha fin: 01-10-2021
    Importe concedido: 77.528,00 €
    Fondos FEDER: NO
  • Título: Radiómetros avanzados en rango milimétrico para instrumentos de observación terrestre de nueva generación para predicción meteorológica y evaluación de cambio climático
    Código de expediente: PID2019-109984RB-C44
    Investigador principal: DANIEL VALDERAS GAZQUEZ.
    Convocatoria: 2019 AEI PROYECTOS I+D+i (incluye Generación del conocimiento y Retos investigación)
    Fecha de inicio: 01-06-2020
    Fecha fin: 01-01-2023
    Importe concedido: 106.117,00 €
    Fondos FEDER: NO