author = "Martínez Viviente, Félix Lorenzo"
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Encontrado 9 documentos, página mostrada 1 de 1

Estudio de la estabilidad térmica del a-SiNx:H producido mediante la técnica de plasma ECR-CVD

Description: [SPA] La técnica de deposición química en fase de vapor activada por resonancia ciclotrónica de electrones (ECR-CVD) ha sido empleada para crecer láminas delgadas de nitruro de silicio hidrogenado (SiNx:H) de varias composiciones. Este dieléctrico de elevada permitividad tiene numerosas aplicaciones...
Language(s): Español

Crecimiento y caracterización de láminas delgadas de dieléctricos de alta permitividad para su aplicación en la estructura de puerta de transistores de efecto campo

Description: La industria microelectrónica necesita desarrollar nuevos materiales dieléctricos que puedan sustituir al óxido de silicio en la estructura de puerta de los transistores de efecto campo CMOS, especialmente conforme nos acercamos a niveles de integración con dimensiones de tan solo 45 nm para la long...
Language(s): Español

1D Koch fractal electromagnetic bandgap microstrip structures with r/a ratios higher than 0.5

Description: A 1-D Koch fractal electromagnetic bandgap (KFEBG) microstrip structure is proposed. It is conceived by replacing the conventional holes etched in the ground plane of a microstrip line by level-1 Koch fractal cell geometries, which have been obtained from a hexagonal shape. In the case of the conven...
Language(s): Español

Novel compact wide-band EBG structure based on tapered 1-D koch fractal patterns

Description: This letter presents a novel electromagnetic bandgap (EBG) structure in microstrip technology based on nonuniform one-dimensional (1-D) Koch fractal patterns whose dimensions and period are modulated by a tapering function that significantly improves the width of the bandgap. This wide bandgap is ac...
Language(s): Español

Optimization of chirped and tapered microstrip koch fractal electromagnetic band gap (KFEBG) structures for improved low-pass filter design

Description: This study presents electromagnetic bandgap (EBG) structures in microstrip technology based on onedimensional Koch fractal patterns (Koch fractal EBG (KFEBG)). This fractal geometry allows to adjust the radius r and distance a between patterns so that a low-pass filter response is obtained when the ...
Language(s): Inglés

Substrate integrated waveguide (SIW) with koch fractal electromagnetic bandgap structures (KFEBG) for bandpass filter design

Description: High-performance bandpass filters (BPFs) based on substrate integrated waveguide (SIW) and half mode SIW (HMSIW) with Koch fractal electromagnetic bandgap (KFEBG) patterns etched on the waveguide surface are proposed. These BPFs are designed using a new methodology. The BPF responses are improved by...
Language(s): Inglés

Characterization of nitrogen-rich silicon nitride films grown by the electron cyclotron resonance plasma technique

Description: Amorphous hydrogenated silicon nitride films have been deposited by the electron cyclotron resonance plasma technique, using N2 and SiH4 as precursor gases. The gas flow ratio, deposition temperature and microwave power have been varied in order to study their effect on the properties of the films, ...
Language(s): Inglés

Optical properties and structure of HfO2 thin films grown by high pressure reactive sputtering

Description: Thin films of hafnium oxide have been grown by high pressure reactive sputtering on transparent quartz substrates (UV-grade silica) and silicon wafers. Deposition conditions were adjusted to obtain as well as amorphous films. Optical properties of the films deposited on the silica substrates were i...
Language(s): Inglés

Dielectric constant tunability at microwave frequencies and pyroelectric behavior of lead-free submicron-structured (Bi0.5Na0.5)1-xBaxTiO3 ferroelectric ceramics

Description: In this article we show that the dielectric constant of lead-free ferroelectric ceramics based on the solid solution (1-x)(Bi0.5Na0.5)TiO3-xBaTiO3, with compositions at or near the morphotropic phase boundary (MPB), can be tuned by a local applied electric field. Two compositions have been studied, ...
Language(s): Inglés
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Encontrado 9 documentos, página mostrada 1 de 1

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