Listar por autor "Abdo-Sánchez, María Elena"
Mostrando ítems 1-20 de 39
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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 ... -
A wideband equivalent circuit for stripline-fed cavity-backed slot radiating elements
Hernández-Escobar, Alberto; Abdo-Sánchez, María Elena
; Camacho-Peñalosa, Carlos (IEEE, 2019-11)
An equivalent circuit for stripline-fed cavity-backed slot radiating elements is proposed. The proposed equivalent circuit consist of a transmission line model for the slot mode, a slot end-effect which includes the ... -
An equivalent-circuit topology for lossy non-symmetric reciprocal two-ports
Hernández-Escobar, Alberto; Abdo-Sánchez, María Elena; Mateos-Ruiz, Pablo; Esteban, Jaime; Martín-Guerrero, Teresa María; Camacho-Peñalosa, Carlos[et al.] (IEEE Journal of Microwaves, 2021-07)
An equivalent-circuit topology for two-port lossy non-symmetric reciprocal networks is proposed. The circuit topology is based on the eigenstate decomposition. The proposed circuit consists of two immittances and two ... -
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 ... -
Analytical Eigenstate Equivalent Circuit for Narrow-Slot Bi-Periodic Scatterers
Hernández-Escobar, Alberto; Mesa, Francisco; Esteban, Jaime; Abdo-Sánchez, María Elena; Martín-Guerrero, Teresa María; Camacho-Peñalosa, Carlos[et al.] (2023-07)
The analytical values of the parameters of an eigenstate-based equivalent circuit are obtained for the analysis and modeling of a simple bi-periodic scatterer. The scatterer geometry consists of a rotated, very narrow slot. ... -
Antenas Fabry-Pérot con apertura uniforme y mejora del ancho de banda.
A design methodology to realize Fabry-Pérot cavity antennas with very high aperture efficiency and improved bandwidth is presented. The antenna is based on a tapered Partially Reflective Surface, and its characteristics ... -
Application of Huygens’ Metasurfaces to the Arbitrary Design of a Leaky-Wave Antenna
Abdo-Sánchez, María 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, María Elena; Martín-Guerrero, Teresa María; 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, María 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, María 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 analítico basado en vectores y valores propios para superficies periódicas con ranuras estrechas.
Hernández-Escobar, Alberto; Mesa, Francisco; Esteban, Jaime; Abdo-Sánchez, María Elena; Martín-Guerrero, Teresa María; Camacho-Peñalosa, Carlos[et al.] (2023)
In this work, the values of the parameters of the eigenstate lattice network are obtained by using only analytical means. The procedure is applied to a simple structure, consisting of a bi-periodic surface made of a slotted ... -
Circuito equivalente del strip-slot complementario como red asimétrica con pérdidas
Esteban Marzo, Jaime; Abdo-Sánchez, María Elena; Martín-Guerrero, Teresa María; 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, María 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, María Elena; Palacios, David; Frías, C.; Ng-Molina, Francisco Yak; Martín-Guerrero, Teresa María; 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, María Elena; Martín-Guerrero, Teresa María; 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, María Elena; Pérez Aguilar, Lorena; Martín-Guerrero, Teresa María; 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, María Elena; Esteban Marzo, Jaime; Martín-Guerrero, Teresa María; 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, María Elena; Martín-Guerrero, Teresa María; 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 ...