• A general approach for robust integrated polarization rotators 

      Alonso-Ramos, C.; Halir, Robert; Ortega-Moñux, Alejandro; Cheben, Pavel; Vivien, Laurent; [et al.] (International Society for Optics and Photonics, 2013)
      Integrated polarization rotators suffer from very high sensitivity to fabrication errors. A polarization rotator scheme that substantially increases fabrication tolerances is proposed. In the proposed scheme, two tunable ...
    • A New Framework for the Performance Analysis of Wireless Communications under Hoyt (Nakagami-q) Fading 

      Romero-Jerez, Juan Manuel; Lopez-Martinez, F. Javier (IEEE, 2017)
      We present a novel relationship between the distribution of circular and non-circular complex Gaussian random variables. Specifically, we show that the distribution of the squared norm of a non-circular complex Gaussian ...
    • Additive manufacturing of rectangular waveguide devices for teaching microwave laboratory 

      Márquez-Segura, Enrique (2019-07-16)
      In this paper the outline of using of low-cost additive manufacturing FDM/FFF technology to build waveguide devices is presented. The focus is set in a full design from specifications to final measurements in a microwave ...
    • Análisis de Planificaciones para redes Acústicas Submarinas de Sensores con Topología Lineal 

      Luque-Nieto, Miguel Ángel; Moreno-Roldán, José Miguel; Poncela-Gonzalez, Javier; Otero, Pablo (2016-11-22)
      En este artículo, se aborda el análisis y mejora de rendimiento de una red submarina lineal formada por un array de nodos sensores y un solo nodo recolector de datos (Gateway) en un extremo. Usando un esquema de transmisiones ...
    • Analysis of M2M Capabilities in 4G 

      Poncela-Gonzalez, Javier; Moreno, J.M.; Aamir, Muhammad (2014-05-07)
      M2M (Machine to Machine) communications enable many new applications that reduce the costs of maintenance and operation via remote monitoring and control. The forecasts for this type of communications predict traffic ...
    • Analysis of power line communications for last-hop backhaul in small cells deployment 

      Cortés, José A. (2019-04-23)
      The purpose of this work is to study the feasibility of using power line communications (PLC) over outdoor public lighting networks (OPLN) for last-hop backhaul in small cell deployment. The analysis is based on actual ...
    • Application-layer Performance Analysis of PRIME in Smart Metering Networks 

      Corchado-López, Julio A.; Manero, Eduardo; Cortés, José A.; Sanz, Alfredo; Díez-del-Río, Luis (IEEE, 2016)
      This paper assesses the performance of actual PRIME v1.3.6 and PRIME v1.4 systems when used for Smart Metering applications. The analysis is performed at the application level using the DLMS/COSEM stack. Hence, it considers ...
    • Asymptotically Exact Approximations for the Symmetric Difference of Generalized Marcum-Q Functions 

      Lopez-Martinez, F. Javier; Romero-Jerez, Juan Manuel; Lopez-Martinez, F. Javier (IEEE, 2015)
      In this paper, we derive two simple and asymptotically exact approximations for the function defined as ΔQm(a, b) =Δ Qm(a, b) - Qm(b, a). The generalized Marcum Q-function Qm(a, b) appears in many scenarios in communications ...
    • A Broadband Bow-Tie Cavity-Backed Slot for Traveling-Wave Arrays in the Millimeter-Wave Band 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2019-05-07)
      The use of bow-tie geometries to enhance the characteristics of a radiating element previously proposed by the authors is presented. The previous element consisted of a broadband cavity-backed slot in transmission ...
    • Caracterización de modelos no-lineales casi-estáticos a partir de las formas de onda en régimen de gran señal 

      Pérez Parras, Sergio; Martin-Guerrero, Teresa Maria; Baños-Polglase, Juana Daphne; Camacho-Peñalosa, Carlos (2018-09-07)
      A method to extract the conduction and displacement components of nonlinear quasi-static current sources controlled by two variables is concisely described. The method is numerically tested by means of two different ...
    • Configuración Software de la directividad de arrays lineales 

      Martínez Serrano, Antonio A; Ortega Valle, Alfonso D; Munilla-Fajardo, Jorge (2015-09-09)
      A line array can be defined as a column of loudspeakers that is designed so that these work together to achieve a higher directivity. This paper presents an application that enables a user to rotate the wavefront of uniform ...
    • A data-driven scheduler model for QoE assessment in a LTE radio network planning tool 

      Sánchez Ordoñez, Pablo; Luna-Ramírez, Salvador; Gijón, Carolina; Toril-Genoves, Matias; Bejarano-Luque, Juan Luis (2019-11-19)
      The use of static system-level simulators is common practice for estimating the impact of re-planning actions in cellular networks. In this paper, a modification of a classical static Long Term Evolution (LTE) simulator ...
    • Distributed Amplifiers in MMIC Technology based on Composite Right/Left-Handed Transmision Lines 

      Martin-Guerrero, Teresa Maria; Palombini, Diego; Mata-Contreras, Francisco Javier; Bentini, Andrea; Ng-Molina, Francisco Yak; [et al.] (2013-11-13)
      Abstract – Three MMIC distributed amplifiers based on Composite Right/Left-Handed Transmission Lines are presented in order to illustrate the actual performance of these devices, and the features that can be obtained with ...
    • Elemento radiante de banda ancha en microstrip cerrada para arrays alimentados en serie 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2018-09-07)
      A previous radiating element in transmission configuration proposed by the authors is alternatively implemented using enclosed microstrip configuration. The new implementation overcomes fabrication issues and improves its ...
    • End-launcher repeatability in broadband methods for characterization of the propagation constant of transmission lines using two-port measurements. 

      Pérez-Escribano, Mario; Márquez-Segura, Enrique (IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2022-04-09)
      This work presents an analysis of the influence of connector repeatability in three different methods for estimating the propagation constant of transmission lines from two-port measurements. For this purpose, the repeatability ...
    • Estudio comparativo de biosensors coherentes basados en estructuras interferométricas y resonantes 

      Molina Fernandez, Iñigo; Leuermann, Jonas; Ortega-Moñux, Alejandro; Wanguemert-Perez, Juan Gonzalo; Halir, Robert (2019-06-18)
      La gran mayoría de los biosensores fotónicos de campo evanescente se basan en arquitecturas interferométricas o resonantes. La determinación analítica del límite de detección (LOD) alcanzable con estas arquitecturas es muy ...
    • Group-scanning for supply chain management 

      Burmester, Mike; Munilla-Fajardo, Jorge (2014-09-16)
      The integrity of shipments in the supply chain may have to be tracked remotely by carriers that are not necessarily trusted. We present an RFID framework architecture for applications when multiple scanned tags generate ...
    • Herramienta para mejorar la afinación vocal en Android 

      Menchén Martín, Ramón; Barbancho-Perez, Ana Maria; Herrero-Platero, María Inés; Tardon-Garcia, Lorenzo Jose; Barbancho-Perez, Isabel (Juan Córcoles Ortega, Julián Fiérrez Aguilar, José M. Martínez Sánchez, José L. Masa Campos, Javier Ortega García, Jorge A. Ruiz Cruz, 2016)
      In this paper, a tool to improve vocal tuning in Android devices is presented. This application aims to offer exercises to practice and improve singing skills. The designed tool includes two main functionalities: sound ...
    • Impact of Sampling Frequency Offset on PRIME 1.4 PLC Systems Performance 

      Cortés, José Antonio; Sanz, Alfredo; Díez-del-Río, Luis; Cañete-Corripio, Francisco Javier (2017-04-17)
      In this paper, the impact of an uncorrected sampling frequency offset (SFO) on the frame error rate (FER) of a PRIME 1.4 system is studied. It is also discussed the need of new algorithms to estimate and correct that SFO ...
    • Impacto de las características de la red eléctrica en canales MIMO PLC domésticos 

      Corchado-López, Julio A.; Cortés-Arrabal, José A.; Cañete-Corripio, Francisco Javier; Díez-del-Río, Luis (2016)
      The recent release of indoor Power Line Communications (PLC) specifications with Multiple-Input Multiple-Output (MIMO) capabilities has significantly increased the bit rates achieved in these channels. However, the performance ...