• A Broadband Cavity-Backed Slot for Series-Fed Arrays 

      Hernández Escobar, Alberto (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 

      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 ...
    • 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 ...
    • 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 ...
    • Caracterización de modelos no-lineales casi-estáticos a partir de las formas de onda en régimen de gran señal 

      Pérez Parras, Sergio; Martin-Guerrero, Teresa Maria; Baños-Polglase, Juana Daphne; Camacho-Peñalosa, Carlos (2018-09-07)
      A method to extract the conduction and displacement components of nonlinear quasi-static current sources controlled by two variables is concisely described. The method is numerically tested by means of two different ...
    • Caracterización no-lineal de dispositivos de un puerto basada en el principio de distorsión poli-armónica 

      Martin-Guerrero, Teresa Maria; Entrambasaguas-Muñoz, José Tomás; Camacho-Peñalosa, Carlos (2017-09-13)
      In this contribution the computation of a nonlinear diode model based on the Poly-Harmonic Distortion principle is described. The diode is composed of a non-linear conductance shunt connected to a non-linear capacitance, ...
    • 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 ...
    • Consideraciones sobre el amplificador distribuido como amplificador de potencia 

      Ng-Molina, Francisco Yak; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2013-09-12)
      In this contribution, a short review of independent research activities on distributed power amplification is presented. An analysis of the intrinsic limitations of distributed power amplifiers serves as a guideline to ...
    • DC-18 GHz MMIC tapered distributed power amplifier 

      Ng Molina, Francisco Yak; Pérez Parras, Sergio; Camacho-Peñalosa, Carlos; Martin-Guerrero, Teresa Maria (2014-07-22)
      A DC-18 GHz MMIC tapered power distributed amplifier has been designed and simulated in GaAs technology. The amplifier has been designed according to the theory for power and efficiency maximization based on tapered drain ...
    • 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, David; 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 ...
    • Distributed Amplifiers in MMIC Technology based on Composite Right/Left-Handed Transmision Lines 

      Martin-Guerrero, Teresa Maria; Palombini, Diego; Mata-Contreras, Francisco Javier; Bentini, Andrea; Ng-Molina, Francisco Yak; [et al.] (2013-11-13)
      Abstract – Three MMIC distributed amplifiers based on Composite Right/Left-Handed Transmission Lines are presented in order to illustrate the actual performance of these devices, and the features that can be obtained with ...
    • 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 ...
    • Eigenstate equivalent circuit for bi-periodic surfaces: Application to three parallel dipoles 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Esteban, 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 

      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 ...
    • Extracción de modelos casi-estáticos para dispositivos no-lineales a partir de medidas en el dominio de la frecuencia 

      Pérez Parras, Sergio; Martin-Guerrero, Teresa Maria; Baños Polglase, Juana Daphne; Camacho-Peñalosa, Carlos (2019-09-11)
      In this contribution an extraction method already proposed by authors and suitable for FET-type devices that could be represented by a quasi-static model is illustrated. For the first time, the method is applied to a FET ...
    • Implementación en Herramienta CAD de un Modelo No-lineal y No-cuasi-estático de Diodo 

      García Luque, Aarón; Martín Guerrero, Teresa M.; Camacho-Peñalosa, Carlos (Iñigo Cuíñas Gómez, 2021-09)
      The implementation of a non-quasi-static model for Schottky diodes into a commercial Computer-Aided Design tool is described. This formulation relies on a non-quasi-static charge definition that depends on two quasi-static ...