• Análisis Preliminar del Strip-slot Complementario en Tecnología Stripline 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2017-09-20)
      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, 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, 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, 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 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2019-05-07)
      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, 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, Jaime; Abdo-Sánchez, 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-Ruíz, Pablo; Hernández-Escobar, Alberto; Abdo-Sánchez, 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, Elena; Palacios, D.; Frías, C.; Ng-Molina, Francisco Yak; Martin-Guerrero, Teresa Maria; [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, 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, 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 ...
    • Elemento radiante de banda ancha en microstrip cerrada para arrays alimentados en serie 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2018-09-07)
      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, Elena; Martin-Guerrero, Teresa Maria; Esteban, 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, 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, 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, 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, Elena; Esteban, 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, Elena; Martin-Guerrero, Teresa Maria; Esteban, 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, ...
    • Non-homogeneous Fabry-Pérot Antenna Design at Ku-band 

      Mateos-Ruiz, Pablo; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2021-09-21)
      A novel technique to design Fabry-Pérot antennas with non-homogeneous PRS is described. It takes advantage of a transmission line circuit model to efficiently obtain all necessary unit cell designs that satisfy the cavity ...
    • Non-homogeneous Fabry-Pérot antenna design process to improve aperture efficiency 

      Mateos Ruíz, Pablo; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2022-03-27)
      A novel technique to design Fabry-Pérot antennas with non-homogeneous partially reflective surfaces (PRSs) is described. It uses a transmission line circuit model to efficiently obtain all necessary unit cell designs that ...