Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Guido Valerio"'
Autor:
Miguel A. Balmaseda-Marquez, Guido Valerio, Pablo Padilla, Angel Palomares-Caballero, Juan F. Valenzuela-Valdes, Carlos Molero
Publikováno v:
IEEE Access, Vol 12, Pp 110840-110849 (2024)
The presented study introduces a semi-analytical circuit model (CM) to fully characterize a dielectric unit cell structure made by blocks instead of applying the effective medium theory. A fitting strategy is used to a obtain a better understanding o
Externí odkaz:
https://doaj.org/article/087656b2b36148cba642e5ed04aacf1e
Publikováno v:
IEEE Journal of Microwaves, Vol 1, Iss 1, Pp 457-469 (2021)
The presence of glide symmetries in periodic structures can introduce beneficial modifications in their electromagnetic properties. The difference between glide and non-glide periodic structures is due to the distinctive coupling between their consti
Externí odkaz:
https://doaj.org/article/cb3a187aa2d74fd7b6545ea772bef560
Publikováno v:
IEEE Access, Vol 6, Pp 71743-71750 (2018)
In this paper, we present a general mode matching formulation to analyze the wave propagation in glide-symmetric metallic surfaces drilled with periodic holes with an arbitrary cross section. A generalized Floquet theorem is applied to reduce the com
Externí odkaz:
https://doaj.org/article/7e9356ea40a247528b81a19fbd9ee837
Autor:
Pilar Castillo-Tapia, Francisco Mesa, Alexander Yakovlev, Guido Valerio, Oscar Quevedo-Teruel
Publikováno v:
Sensors, Vol 21, Iss 18, p 6293 (2021)
This work studies the propagation characteristics of a rectangular waveguide with aligned/misaligned double-sided dielectric-filled metallic corrugations. Two modes are found to propagate in the proposed double-sided configuration below the hollow-wa
Externí odkaz:
https://doaj.org/article/837ed3a6d2bc4354bef88d29f7933e38
Autor:
Oskar Zetterstrom, Guido Valerio, Francisco Mesa, Fatemeh Ghasemifard, Martin Norgren, Oscar Quevedo-Teruel
Publikováno v:
Applied Sciences, Vol 10, Iss 17, p 5990 (2020)
A mode-matching formulation is presented and used to analyze the dispersion properties of twist-symmetric transmission lines. The structures are coaxial lines periodically loaded with infinitely thin screens, which are rotated with respect to each ot
Externí odkaz:
https://doaj.org/article/136a7766f28d4143a6f0659957231a6f
Autor:
Antonio Alex-Amor, Guido Valerio, Fatemeh Ghasemifard, Francisco Mesa, Pablo Padilla, José M. Fernández-González, Oscar Quevedo-Teruel
Publikováno v:
Applied Sciences, Vol 10, Iss 5, p 1600 (2020)
This paper studies wave propagation in a periodic parallel-plate waveguide with equilateral triangular holes. A mode-matching method is implemented to analyze the dispersion diagram of the structure possessing glide and mirror symmetries. Both struct
Externí odkaz:
https://doaj.org/article/70ce933f11864763a1527707c3b8f13c
Autor:
Mohammad Bagheriasl, Guido Valerio
Publikováno v:
Symmetry, Vol 11, Iss 5, p 620 (2019)
We discuss here under which conditions a periodic line with a twist-symmetric shape can be replaced by an equivalent non-twist symmetric structure having the same dispersive behavior. To this aim, we explain the effect of twist symmetry in terms of c
Externí odkaz:
https://doaj.org/article/8b3de297236440d0852a0106bf6760e6
Publikováno v:
Symmetry, Vol 11, Iss 4, p 581 (2019)
In this article, we demonstrate how twist symmetries can be employed in the design of flat lenses. A lens design is proposed, consisting of 13 perforated metallic sheets separated by an air gap. The perforation in the metal is a two-dimensional array
Externí odkaz:
https://doaj.org/article/aff7f8ed4dec46ecacee0c2af2aa2348
Publikováno v:
Sensors, Vol 18, Iss 7, p 2254 (2018)
In this study, a bound-constrained optimization algorithm is applied for estimating physiological data (pulse and breathing rate) of human body using 60 GHz Doppler radar, by detecting displacements induced by breathing and the heartbeat of a human s
Externí odkaz:
https://doaj.org/article/f8ef5ba1705d464eb823e1bf65f1dfae
Publikováno v:
International Journal of Antennas and Propagation, Vol 2012 (2012)
A novel class of structures is proposed to realize ultra-wide-band radiating elements for large arrays, providing dual polarization, beam scanning, and compact and inexpensive realization based on suitable rhombic arrangements of dipoles printed on l
Externí odkaz:
https://doaj.org/article/ffd585e8a7774bb695f542426ea62eac