Listar por autor "Abdo-Sánchez, Maria Elena"
Mostrando ítems 1-20 de 31
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A Broadband Cavity-Backed Slot for Series-Fed Arrays
(UMA Editorial, 2022-01-26)A pesar de que el diseño de antenas en el contexto de los sistemas de comunicaciones es uno de los desafíos más clásicos en la ingeniería de telecomunicación, las antenas para nuevas aplicaciones y servicios de reciente ... -
Análisis Preliminar del Strip-slot Complementario en Tecnología Stripline
A stripline-fed slot antenna configuration is proposed using planar technology. Its main advantages are the broad impedance bandwidth available and the radiation in only one half-space, which are obtained with the use of ... -
Application of Huygens’ Metasurfaces to the Arbitrary Design of a Leaky-Wave Antenna
Abdo-Sánchez, Maria Elena
; Epstein, Ariel; Eleftheriades, George V. (2017-09-13)
Leaky-wave antennas are guiding structures that leak power along their length. Their radiation is mainly characterized by the propagation constant (leakage factor and phase constant) of the traveling wave. In this ... -
Arrays planares basados en el elemento strip-slot complementario
Abdo-Sánchez, Maria Elena; Martin-Guerrero, Teresa Maria; Page de la Vega, Juan Enrique; Esteban Marzo, Jaime; Camacho-Peñalosa, Carlos (2013-09-13)
Recently, the authors introduced a novel planar radiating element that exploits the characteristics of the slotline microstrip coupling to obtain a microstrip-fed slot with broadband matching. This paper reviews the main ... -
Barrido del haz en antena de onda de fuga basada en metasuperficie mediante cristales líquidos
Abdo-Sánchez, Maria Elena; Epstein, Ariel; Eleftheriades, George V. (Iñigo Cuiñas Gómez, 2021-09-23)
In this communication, the reconfigurability mechanisms for beam steering at a fixed frequency in a leakywave antenna based on Huygens metasurfaces are reviewed. A preliminary design for a forward-to-backward scanning ... -
A Broadband Bow-Tie Cavity-Backed Slot for Traveling-Wave Arrays in the Millimeter-Wave Band
The use of bow-tie geometries to enhance the characteristics of a radiating element previously proposed by the authors is presented. The previous element consisted of a broadband cavity-backed slot in transmission ... -
Building Arrays with the Unidirectional-Radiating Complementary Strip-Slot
Hernández Escobar, Alberto; Abdo-Sánchez, Maria Elena; Camacho-Peñalosa, Carlos (Iñigo Cuíñas Gómez, 2021-09)
An upgraded version of the complementary stripslot radiating element is reviewed. The original radiating element consists in a microstrip-fed slot in transmission configuration. In the proposed modification, the slot is ... -
Circuito equivalente del strip-slot complementario como red asimétrica con pérdidas
Esteban Marzo, Jaime; Abdo-Sánchez, Maria Elena; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2017-09-26)
The complementary strip-slot can be successfully modeled by means of a lattice equivalent circuit, with realizable immittances. In the case of the misaligned complementary stripslot, useful in series fed arrays, the lattice ... -
Design and fabrication of a Fabry-Pérot cavity antenna for the Ku-band
Mateos-Ruiz, Pablo; Hernández-Escobar, Alberto; Abdo-Sánchez, Maria Elena; Camacho-Peñalosa, Carlos (2020-09-18)
A design of a directive antenna based on a Fabry-Pérot cavity is described, using a single metallic partially reflecting surface (PRS) in front of a coaxial-fed patch antenna. The main features of this type of antennas are ... -
Design Aspects of a Broadband Beam-Reconfigurable Leaky-Wave Antenna
Abdo-Sánchez, Maria Elena; Palacios, David; Frías, C.; Ng-Molina, Francisco Yak; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos[et al.] (IEEE Antennas and Propagation Society, 2016)
Design aspects of a novel beam-reconfigurable pla-nar series-fed array are addressed to achieve beam steering with frequency tunability over a relatively broad bandwidth. The design is possible thanks to the use of the ... -
Disipación de potencia en redes en celosía: la radiación del strip-slot complementario
Abdo-Sánchez, Maria Elena; Martin-Guerrero, Teresa Maria; Esteban Marzo, Jaime; Camacho-Peñalosa, Carlos (2015-09-21)
A circuit property of symmetrical lattice networks is derived and applied to the analysis of symmetrical twoport electromagnetic structures. This property is related to the independence of the power dissipation in the ... -
Dual Beam Sinusoidally Modulated Reactance Surface Antenna
Abdo-Sánchez, Maria Elena; Pérez Aguilar, Lorena; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2020-09)
In this work, a planar dual beam Sinusoidally Modulated Reactance Surface (SMRS) antenna is presented. Our method is based on the implementation of a surface impedance modulated by the superposition of two sinusoidal ... -
Eigenstate equivalent circuit for bi-periodic surfaces: Application to three parallel dipoles
Hernández Escobar, Alberto; Abdo-Sánchez, Maria Elena; Esteban Marzo, Jaime; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2022-03-29)
An equivalent circuit for the unit cell of bi-periodic surfaces is proposed. The equivalent circuit is general and simple. It is based on the decomposition of the eigenmodes of the structure and it takes into account the ... -
Elemento radiante de banda ancha en microstrip cerrada para arrays alimentados en serie
A previous radiating element in transmission configuration proposed by the authors is alternatively implemented using enclosed microstrip configuration. The new implementation overcomes fabrication issues and improves its ... -
Equivalent Circuit Modelling of Non-Symmetric Reciprocal Lossy Electromagnetic Structures
Abdo-Sánchez, Maria Elena; Martin-Guerrero, Teresa Maria; Esteban Marzo, Jaime; Camacho-Peñalosa, Carlos (2018-06-04)
Lattice-network-based equivalent circuits of lossy symmetric reciprocal electromagnetic structures have shown superior performance when compared to other topologies like the T- or PI- networks. This is due to the realizability ... -
Experimental Verification of a Leaky-Wave Antenna Based on Bianisotropic Huygens’ Metasurface
Abdo-Sánchez, Maria Elena; Chen, Michael; Epstein, Ariel; Eleftheriades, George V. (2019-05-06)
Abstract—In this communication, the experimental verification of a leaky-wave antenna that uses a Huygens’ metasurface to have a control on the radiation parameters is addressed. The antenna consists of a parallel-plate ... -
Implementación de antena leaky-wave basada en metasuperficie de Huygens
Abdo-Sánchez, Maria Elena; Epstein, Ariel; Eleftheriades, George V. (2018-09-07)
In this communication, the implementation of a leaky-wave antenna based on bianisotropic Huygens’ metasurface is addressed. It consists of a parallel-plate waveguide in which the top plate is replaced by a metasurface. It ... -
Leaky-Wave antennas with arbitrary radiation based on bianisotropic Huygens’ metasurfaces
Abdo-Sánchez, Maria Elena; Epstein, Ariel; Eleftheriades, George V. (2018-06-05)
In this contribution, we present the application of Huygens’ metasurfaces (HMS) to the arbitrary design of leaky-wave antennas (LWAs). These metasurfaces have demonstrated their capabiity to tailor the electromagnetic waves ... -
Measuring odd- and even-mode propagation constants of coupled-lines by means of the lattice network
Hernández-Escobar, Alberto; Abdo-Sánchez, Maria Elena; Esteban Marzo, Jaime; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2019-10-30)
A classic method for measuring the propagation constant of transmission lines is the one proposed by Bianco and Parodi more than four decades ago [1]. It is based on the invariance of the cross ratio of four complex numbers ... -
Modelling asymmetric two-port reciprocal microwave structures by means of compact equivalent circuits
Abdo-Sánchez, Maria Elena; Martin-Guerrero, Teresa Maria; Esteban Marzo, Jaime; Camacho-Peñalosa, Carlos (2019)
Effective microwave systems design requires powerful and reliable modeling techniques. Today modern CAD tools provide such support from device physics to circuit level or from electromagnetics to system level. Nevertheless, ...