Listar Ingeniería de Comunicaciones - (IC) por título
Mostrando ítems 184-203 de 601
-
Design of arbitrary optical filters in silicon-on-insulator using evanescently-coupled Bragg gratings
(2019-07-10)Spectral filters are experiencing an increasing demand in several applications of the silicon- on-insulator (SOI) platform. Many works have demonstrated that arbitrary frequency responses can be synthesized by apodizing ... -
Design of optical metamaterial waveguide structures
(2017-06-01)Subwavelength gratings (SWGs) are periodic structures with a pitch (Λ) smaller than the wavelength of the propagating wave (λ), so that diffraction effects are suppressed. These structures thus behave as artificial ... -
Design of subwavelength grating metamaterial waveguides for communications and sensing applications
(2019-07-04)In this work we will cover some of our recent advances in the design of state-of-the-art silicon photonic devices based on all-dielectric subwavelength grating (SWG) metamaterials. Specifically, we will focus on the design ... -
Designing anisotropy with waveguide subwavelength structures
(2018-07-12)Silicon sub-wavelength structures have become a versatile design tool for practical, high-performance integrated optical devices, ranging from highly efficient grating couplers to ultra-broadband beam-splitters. Recently, ... -
Designing polarization management devices by tilting subwavelength grating structures
(2019-05-03)Subwavelength gratings (SWG) are periodic structures which behave as controllable homogeneous metamaterials. SWGs are extremely interesting when they are used in platforms with a limited choice of material refractive indices, ... -
Despolimerización electroquímica de lignina con catalizadores metálicos sobre fibras de carbono preparadas por electrohilado de lignina.
(2023)Derivados de fuentes fósiles, la valorización de lignina mediante la producción de compuestos de interés se ha convertido en un proceso económicamente atractivo. En este trabajo se propone el doble uso de lignina, como ... -
Detección de degradaciones en redes móviles basado en máquina de estados y umbrales de Otsu
(2022-09)Troubleshooting degradations in a mobile network is mainly a manual activity. Self-Healing (SH) appeared to automate such functions, using techniques such as Data Analytics with network performance indicators. Along this ... -
Detection and compensation methods for self-healing in self-organizing networks
(UMA Editorial, 2017)Uno de los elementos clave en la definición de los recientes estándares de comunicaciones móviles del 3rd Generation Partnership Project (3GPP), LTE (Long Term Evolution) y LTEAdvanced, es la consideración de funciones ... -
Detectores multivelocidad para comunicaciones móviles de tercera generación
(Universidad de Málaga, Servicio de Publicaciones, 2006)El estándar europeo de comunicaciones móviles de tercera generación, UMTS Universal Mobile Communications System), tiene definido para el interfaz aire acceso múltiple por división de código de banda ancha, WCDMA ... -
Development and RF-Performance of AlGaN/GaN and InAlN/GaN HEMTs on Large-Diameter High-Resistivity Silicon Substrates
(2022)A CMOS-compatible industrial processing and RF analysis of 150 mm GaN-on-HR-Si substrates with AlGaN and InAlN barrier is presented. Process development along with transfer to large-wafer scale is shown and some HEMT ... -
Diagnosis automática con 5G para entornos de emergencia
(2023)Emergency communications are a fundamental aspect for any community, becoming more necessary year after year. This fact, together with the continuous advance of mobile network technologies, enables increasingly more reliable ... -
Diffractive sidewall grating coupler: towards 2D free-space optics on chip.
(2019-05-02)Silicon photonics has been the subject of intense research efforts. In order to implement complex integrated silicon photonic devices and systems, a wide range of robust building blocks is needed. Waveguide couplers are ... -
Discriminador de frecuencia basado en resonadores “dual-mode” sintonizables
(2013-09)In this paper a novel varactor-tuned frequency discriminator that makes use of two tunable dual-mode microstrip resonators is demonstrated. In this circuit, the two tuned modes of the resonators are used independently to ... -
Discriminative Sparse Features for Alzheimer’s Disease Diagnosis using multimodal image data.
(Bentham Science, 2018-01-01)Feature extraction in medical image processing still remains a challenge, especially in high-dimensionality datasets, where the expected number of available samples is considerably lower than the dimension of the feature ... -
Diseño analítico de filtros multibanda con líneas de transmisión multiconductoras y stubs en abierto
(2019-09-12)A new topology for implementing multiband bandpass filters is presented in this paper. Two identical shortcircuited multiconductor transmission lines (MTL) and several shunt open stubs are interconnected to achieve the ... -
Diseño de antena óptica integrada de haz estrecho en tecnología silicon-on-insulator
(2021-07)Las antenas ópticas acopladas en fase son un elemento clave en sistemas de Light Detection and Ranging (LIDAR) integrados, en los que se necesita emitir un haz óptico con ancho angular estrecho en un amplio número de ... -
Diseño de dispositivos pasivos de microondas en tecnologías planares multicapa
(UMA Editorial, 2017-09-20)Las tecnologías planares multicapa son clave en el desarrollo de transceptores compactos, como los utilizados para los sistemas de comunicaciones multi-estándar actuales, ya que proporcionan una alta capacidad de integración ... -
Diseño de filtros ópticos integrados con respuesta espectral arbitraria en tecnología de silicio sobre aislante
(2019-09-10)Silicon photonics is one of the most promising technologies nowadays, with myriads of potential applications in communications and sensing. Many of these applications require spectral filters synthesizing arbitrary frequency ... -
Diseño de filtros paso-banda mediante cavidades resonantes en tecnología SIW multicapa
(2017)This document discusses the design of coupled resonators band-pass microwave filters. The resonators are implemented as substrate integrated waveguide (SIW) rectangular cavities, which are piled vertically in a multilayer ... -
Diseño de grating couplers de orden cero de banda ancha y alta eficiencia para el infrarrojo medio
(2017-09-27)The mode fields of optical fibers and high-index contrast photonic waveguides have different dimensions, making difficult the coupling of light from one to the other. To solve this problem, surface grating couplers are one ...