Search Results - "Quevedo–Teruel, Oscar"

Double-layer geodesic and gradient-index lenses by Chen, Qiao, Horsley, Simon A. R., Fonseca, Nelson J. G., Tyc, Tomáš, Quevedo–Teruel, Oscar

“…A double-layer lens consists of a first gradient-index/geodesic profile in an upper waveguide, partially surrounded by a mirror that reflects the wave into a…”
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Compact parallel‐plate waveguide half‐Luneburg geodesic lens in the Ka‐band by Fonseca, Nelson J.G., Liao, Qingbi, Quevedo‐Teruel, Oscar

“…A parallel‐plate waveguide half‐Luneburg geodesic lens is designed and experimentally validated in the Ka‐band. The geodesic lens profile is modulated using…”
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6G energy‐efficient systems based on arrays combined with dielectric lenses by Wang, Hairu, Castillo‐Tapia, Pilar, Manholm, Lars, Johansson, Martin, Quevedo‐Teruel, Oscar, Algaba‐Brazález, Astrid

“…It is demonstrated that combining phased array antennas with dielectric lenses constitutes a suitable solution to increase the energy efficiency in…”
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Mechanically Reconfigurable Waveguide Filter Based on Glide Symmetry at Millimetre-Wave Bands by Tamayo-Dominguez, Adrian, Fernández-González, José-Manuel, Quevedo-Teruel, Oscar

“…This paper presents the design and fabrication of a mechanically reconfigurable filter at W band based on the concept of glide symmetry. The tunability is…”
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Mutual Coupling Reduction in Patch Antenna Arrays by Using a Planar EBG Structure and a Multilayer Dielectric Substrate by Rajo-Iglesias, E., Quevedo-Teruel, O., Inclan-Sanchez, L.

“…Periodic structures can help in the reduction of mutual coupling by using their capability of suppressing surface waves propagation in a given frequency range…”
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Guest editorial: EuCAP2021 special section by Castañer, Manuel Sierra, Monni, Stefania, Quevedo‐Teruel, Oscar

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A solution to the complement of the generalized Luneburg lens problem by Fonseca, Nelson J. G., Tyc, Tomáš, Quevedo–Teruel, Oscar

“…Lenses are of interest for the design of directive antennas and multi-optics instruments in the microwave, terahertz and optical domains. Here, we introduce an…”
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Dual-Band Patch Antennas Based on Short-Circuited Split Ring Resonators by Quevedo-Teruel, Óscar, Kehn, Malcolm Ng Mou, Rajo-Iglesias, Eva

“…A study of an innovative antenna based on split ring resonators (SSRs) is presented. SSRs have been exhaustively used in the literature as the unit cell of…”
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Planar Soft Surfaces and Their Application to Mutual Coupling Reduction by Rajo, Eva, Quevedo Teruel, Oscar, Inclan-Sanchez, L.

“…This paper presents a numerical study of the behavior of a planar version of traditional soft surfaces. The application of these structures, although limited…”
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Compact Loaded PIFA for Multifrequency Applications by Quevedo-Teruel, O., Pucci, E., Rajo-Iglesias, E.

“…A new multifrequency microstrip patch antenna is presented. The antenna can be considered a PIFA since it has a metallic wall on one of its sides. The…”
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Elliptical generalized Maxwell fish-eye lens using conformal mapping by Eskandari, Hossein, Majedi, Mohammad Saeed, Attari, Amir Reza, Quevedo-Teruel, Oscar

“…A circular graded index lens is conformally transformed to an elliptical shape using a closed-form transformation. The proposed transformation is then employed…”
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H-plane horn antenna with enhanced directivity using conformal transformation optics by Eskandari, Hossein, Albadalejo-Lijarcio, Juan Luis, Zetterstrom, Oskar, Tyc, Tomáš, Quevedo-Teruel, Oscar

“…Conformal transformation optics is employed to enhance an H-plane horn’s directivity by designing a graded-index all-dielectric lens. The transformation is…”
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Study of Forward and Backward Modes in Double-Sided Dielectric-Filled Corrugated Waveguides by Castillo-Tapia, Pilar, Mesa, Francisco, Yakovlev, Alexander, Valerio, Guido, Quevedo-Teruel, Oscar

“…This work studies the propagation characteristics of a rectangular waveguide with aligned/misaligned double-sided dielectric-filled metallic corrugations. Two…”
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Analyzing Glide-Symmetric Holey Metasurfaces Using a Generalized Floquet Theorem by Ghasemifard, Fatemeh, Norgren, Martin, Quevedo-Teruel, Oscar, Valerio, Guido

“…In this paper, we present a general mode matching formulation to analyze the wave propagation in glide-symmetric metallic surfaces drilled with periodic holes…”
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On the Benefits of Glide Symmetries for Microwave Devices by QUEVEDO-TERUEL, OSCAR, CHEN, QIAO, MESA, FRANCISCO, FONSECA, NELSON J. G., VALERIO, GUIDO

“…The presence of glide symmetries in periodic structures can introduce beneficial modifications in their electromagnetic properties. The difference between…”
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Fully-Metallic Additively Manufactured Monolithic Double-Ridged Waveguide Rotman Lens in the K/Ka-Band by Fonseca, Nelson J. G., Gomanne, Sophie-Abigaël, Rico-Fernández, José, Jankovic, Petar, Galdeano, Jaione, Toso, Giovanni, Angeletti, Piero, Arrebola, Manuel, Quevedo-Teruel, Oscar

“…This paper reports on the design and experimental validation of a fully-metallic double-ridged waveguide 10 × 10 Rotman lens additively manufactured as a…”
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Dispersion Analysis of Metasurfaces With Hexagonal Lattices With Higher Symmetries by Yang, Shiyi, Zetterstrom, Oskar, Mesa, Francisco, Quevedo-Teruel, Oscar

“…This article investigates the dispersion properties of metasurfaces with hexagonal lattices, including potential higher symmetric configurations. We explore…”
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Three-Dimensional Broadband and Isotropic Double-Mesh Twin-Wire Media for Meta-Lenses by Wang, Hairu, Chen, Qiao, Zetterstrom, Oskar, Quevedo-Teruel, Oscar

“…Lenses are used for multiple applications, including communications, surveillance and security, and medical instruments. In homogeneous lenses, the contour is…”
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Transformation Optics Inspired Multibeam Lens Antennas for Broadband Directive Radiation by Qi Wu, Zhi Hao Jiang, Quevedo-Teruel, Oscar, Turpin, Jeremiah P., Wenxuan Tang, Yang Hao, Werner, Douglas H.

“…Recent advancements in transformation optics (TO) and metamaterials have inspired tremendous interest in the electromagnetic community, creating a variety of…”
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Fully Metallic Flat Lens Based on Locally Twist-Symmetric Array of Complementary Split-Ring Resonators by Dahlberg, Oskar, Valerio, Guido, Quevedo-Teruel, Oscar

“…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…”
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