Exploració per tema "Dielectrics"
Ara es mostren els items 1-20 de 52
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A Self-Oscillating Single Gatemesfet X-Bandmixer
(Institute of Electrical and Electronics Engineers (IEEE), 1987)
Text en actes de congrés
Accés obertThe nonlinear properties of GaAs MESFET can be used to implement self-oscillating mixers. This paper describes a new single-gate MESFET X-Band mixer of this kind built on a microstrip circuit, its design constraints and ... -
Accelerated direct solution of the MoM-VIE for dielectric scatterers
(2011)
Text en actes de congrés
Accés obertThe Multiscale Compressed Block Decomposition algorithm (MS-CBD), a direct (non-iterative) linear solver, is applied to accelerate the solution of the MoM-VIE formulation for dielectric scatterers. Numerical solutions are ... -
Accurate determination of dielectric properties in small, high-permittivity dielectric cylinders
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Comunicació de congrés
Accés obertWe describe a method for performing cryogenic permittivity and loss tangent measurements of small (few mm), high-permittivity dielectric cylinders used in surface impedance measurement of superconductors. We combine the ... -
All-dielectric self-cloaked structures
(2018-03-17)
Article
Accés obertA general procedure to design objects that are intrinsically invisible (without the necessity of an external cloak) has not been demonstrated so far. Here we propose a flexible method to design such self-cloaked objects ... -
Analysis on the effects of the human body on the performance of wearable textile antenna in substrate integrated waveguide technology
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertA wearable textile circular ring slot antenna based on a substrate integrated waveguide cavity is presented. In this paper, the focus is on studying and understanding the technical behavior of the SIW textile antenna when ... -
Anopore confinement in the cyanobiphenyl-based liquid crystal dimer CB7CB. A dielectric study
(2023-12-21)
Article
Accés restringit per política de l'editorialWe report an experimental work on the liquid crystal dimer 1’’,7’-bis(4-cyanobiphenyl-4’-yl) heptane (CB7CB) confined to Anopore membranes. We have studied the behaviour of the dielectric relaxation modes in the isotropic ... -
Beam focalization by chirped mirrors
(Optical Society of American (OSA), 2014)
Text en actes de congrés
Accés restringit per acord de confidencialitatA novel application of chirped dielectric mirrors for narrow beam focalization is proposed and demonstrated numerically and experimentally. Analogy to temporal dispersion compensation by chirped dielectric mirrors is discussed. -
Cálculo de la difracción de cilindros de forma arbitraria mediante el método de los elementos de contorno
(1987)
Text en actes de congrés
Accés obertThe Boundary Element Method is applied to computing electromagnetic scattering of dielectric cylinders of arbitrary shape. The obtained results are shown and compared with analytic solutions and previous results obtained ... -
Characterization method of the dynamics of the trapped charge in contactless capacitive MEMS
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialDielectric charging of insulating films in microelectromechanical systems (MEMS) has a crucial effect on the operation of those devices. A new method is presented in order to characterize the dynamics of the charge trapped ... -
Charge induced by ionizing radiation understood as a disturbance in a sliding mode control of dielectric charge
(2015-07-03)
Article
Accés obertThe purpose of this paper is to show that the charge induced by radiation in a dielectric on which a sigma–delta control of dielectric charge is implemented, can be seen as a disturbance in a sliding mode controller. ... -
Charge storage and retention in electret dielectric layers for energy harvesting applications
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialBy providing a permanent electric polarization, electrets have a wide range of applications in different fields like sensors and actuators, energy harvesting or biomedicine. Stable electrets with silicon-based compatible ... -
Closed-loop compensation of dielectric charge induced by ionizing radiation
(2015-06-01)
Article
Accés obertThis letter investigates the capability of dielectric charge control loops to cope with charge induced by ionizing radiation. To this effect, an microelectromechanical systems (MEMS) variable capacitor has been irradiated ... -
Comparative dielectric and thermally stimulated-depolarization-current studies of the liquid crystal dimers 1¿,9¿-bis(4-cyanobiphenyl-4'-yl) nonane and heptane and a binary mixture between them, close to the glass transition
(American Institute of Physics (AIP), 2022-11-21)
Article
Accés obertWe have performed dielectric spectroscopy and thermally stimulated-depolarization-current experiments to study the molecular dynamics of the twist-bend nematic phase close to the glass transition of two members of the ... -
Conductores y dieléctricos
(2008-11-19)
Audiovisual
Accés obert -
Contribution of reversible processes to the non-linear dielectric response in hard lead zirconate titanate ceramics
(2005-10)
Article
Accés obertSe estudia la dependencia entre la constante dieléctrica y las pérdidas con el campo eléctrico aplicado, así como entre la constante dieléctrica y las pérdidas dieléctricas. Los resultados muestran que las cerámicas PZT ... -
Design of a dielectric flat lens antenna for 60 GHz WPAN applications
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper we present the design of a dielectric flat lens antenna to operate in the 60 GHz band for WPAN applications. In order to overcome the specific atmospheric attenuation, which characterizes the propagation in ... -
Dielectric and mechanical nonlinear behavior of Mn doped PMN-35PT ceramics
(2010-10)
Article
Accés obertThis paper presents an investigation on dielectric and mechanical nonlinear properties in Mn-doped PMN-35PT ceramics. The structural study of the ceramics verifies that the 1% mol Mn doped PMN-35PT is a pure perovskite ... -
Dielectric and piezoelectric nonlinear properties of slightly textured lead barium niobate ceramics
(American Institute of Physics (AIP), 2019-01-09)
Article
Accés obertDielectric and piezoelectric responses of slightly textured, lead barium niobate ceramics are studied. The designed morphotropic phase boundary composition (Pb0.63Ba0.37Nb2O6) shows considerable nonlinear dielectric and ... -
Dispersion characteristics and field structure of an axially magnetized ferrite loaded rectangular waveguide
(Institute of Electrical and Electronics Engineers (IEEE), 1972)
Text en actes de congrés
Accés obertA basic limitation in an earlier work on the axially magnetized, ferrite loaded rectangular guide has led to a detailed re-examination of this problem. Both a series solution and a perturbational technique are used to find ... -
Distortion-sensitive insight into the pretransitional behavior of 4-n-octyloxy-4 '-cyanobiphenyl (8OCB)
(Institute Of Physics Publishing Ltd, 2013-06)
Article
Accés restringit per política de l'editorialResults of studies of the static and dynamic dielectric properties in rod-like 4-n-octyloxy-40-cyanobiphenyl (8OCB) with isotropic (I)–nematic (N)–smectic A (SmA)–crystal (Cr) mesomorphism, combined with measurements of ...