Listar por autor "Hernández-Escobar, Alberto"
Mostrando ítems 1-15 de 15
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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. ... -
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 ... -
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 ... -
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 ... -
Measuring odd- and even-mode propagation constants of coupled-lines by means of the lattice network
Hernández-Escobar, Alberto; Abdo-Sánchez, María Elena; Esteban Marzo, Jaime; Martín-Guerrero, Teresa María; 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 ... -
Novel Implementation for a Cavity-Backed Slot Fed in Transmission Configuration
A novel radiating element proposed previously by the authors is alternatively implemented using enclosed microstrip configuration. The radiating element shows broad impedance bandwidth and unidirectional radiation pattern. ... -
On the eigenstate equivalent circuit for lossy asymmetric two-ports and its applications
Esteban Marzo, Jaime; Hernández Escobar, Alberto; Abdo-Sánchez, María Elena; Mateos-Ruiz, Pablo; Martín-Guerrero, Teresa María; Camacho-Peñalosa, Carlos[et al.] (2022)
An equivalent-circuit topology for two-port lossy non-symmetric reciprocal networks is presented [1]. The circuit topology is based on the eigenstate decomposition. The proposed circuit consists of two immittances and two ... -
Ranura de Banda Ancha en Doble T Sobre Cavidad para Arrays Alimentados en Serie
A previous radiating element for series-fed arrays proposed by the authors and based on a Cavity-Backed Slot (CBS) is modified to improve its bandwidth. In order to do that, the slot is modified to reduce its resonance ...