Browsing by UPNA Author "Gonzalo García, Ramón"
Now showing items 1-20 of 102
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300 GHz optoelectronic transmitter combining integrated photonics and electronic multipliers for wireless communication
Ali, Muhsin; Pérez Escudero, José Manuel
; Guzmán Martínez, Robinson Cruzoe; Lo, Mu Chieh; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; García Muñoz, Luis Enrique (MDPI, 2019)
Artículo / Artikulua 
THz communications systems at carrier frequencies above 200 GHz are the key to enable next-generation mobile communication networks with 100 Gbit/s wireless data rates. One of the key questions is, which carrier frequency ... -
Advanced feeds for mm-wave antenna systems
Teniente Vallinas, Jorge; Iriarte Galarregui, Juan Carlos ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón (Springer, 2018)
Capítulos de libro / Liburuen kapituluak
Millimeter-wave antenna systems have traditionally required high performance feeds in order to fulfill its stringent requirements. Therefore, this goal has been achieved by corrugated horns. However, in the last years new ... -
Alimentadores gaussianos en guía de onda rectangular
Teniente Vallinas, Jorge; Gonzalo García, Ramón ; Río Bocio, Carlos del (1999)
Contribución a congreso / Biltzarrerako ekarpena
A new and efficient design of a rectangular corrugated waveguide mode converter, from TE10 mode in a smooth rectangular monomode waveguide to HE11 mode in a corrugated rectangular waveguide, is proposed. The main idea ... -
Amorphous glass-coated ferromagnetic wires in microwave engineering
Liberal Olleta, Íñigo (2013)
Tesis doctoral / Doktoretza tesia
En esta tesis se ha estudiado el uso de hilos ferromagnéticos recubiertos de vidrio en ingeniería de microondas. Para este fin, se han formulado modelos analíticos y equivalentes circuitales de la interacción entre un ... -
Análisis de efecto de un superestrato left-handed en la apertura de una guía rectangular
Sáenz Sáinz, Elena; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Maagt, Peter de (2005)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, results showing the experimental verification of the gain improvement of a rectangular waveguide antenna when a left-handed material (LHM) is used as superstrate are presented. The improvement has been ... -
Antena corrugada con perfil gaussiano de gran ancho de banda
Teniente Vallinas, Jorge; Gonzalo García, Ramón ; Río Bocio, Carlos del (2001)
Contribución a congreso / Biltzarrerako ekarpena
En este trabajo se presenta el diseño de una antena de bocina corrugada con más de un 40% de ancho de banda. Los patrones de radiación medidos coinciden muy bien con los simulados. Esta antena se puede usar en aplicaciones ... -
Antenas de bocina optimizadas para acoplar modos gaussianos de orden superior
Río Bocio, Carlos del; Gonzalo García, Ramón ; Sorolla Ayza, Mario ; Thumm, Manfred (1995)
Contribución a congreso / Biltzarrerako ekarpena
The concept of higher order free space modes, gaussian-like beam modes can be applied to efficiently transport the power generated by a gyrotron for technological applications. Waveguide modes can be coupled properly to ... -
Boresight radiation of a dipole antenna with a uniform or non-uniform left handed superstrate
Sáenz Sáinz, Elena; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Maagt, Peter de (2006)
Contribución a congreso / Biltzarrerako ekarpena
In this paper measurements of the radiation performances of a dipole fed by a coaxial balun and a dipole with a left handed superstrate based on a finite periodic repetition of a unit cell are compared. Two types ... -
Broadband radar cross-section reduction using AMC technology
Iriarte Galarregui, Juan Carlos; Tellechea Pereda, Amagoia ; Martínez de Falcón, José Luis ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Maagt, Peter de (IEEE, 2013)
Artículo / Artikulua
This paper presents the design, fabrication and characterization of a planar broadband chessboard structure to reduce the radar cross-section (RCS) of an object. The chessboard like configuration is formed by combining two ... -
A Chebyshev transformer-based microstri-to-groove-gap-waveguide inline transition for MMIC packaging
Pérez Escudero, José Manuel; Torres García, Alicia E. ; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo (IEEE, 2019)
Artículo / Artikulua
The gap waveguide technology has become an alternative to millimeter- and submillimeter-wave electronic circuit packaging thanks to the loss reduction associated with its use. In this paper, a simplified design of an inline ... -
Choked-gaussian corrugated horn antenna design small global coverage horn antenna for TT&C with extremely low sidelobe level
Teniente Vallinas, Jorge; Gonzalo García, Ramón ; Río Bocio, Carlos del (2003)
Contribución a congreso / Biltzarrerako ekarpena
Extremely low sidelobe horn antennas are often required for the actual technology. This type of horn antennas are important to avoid interference with other systems. In this paper we describe a new design implementing a ... -
Circuit and multipolar approaches to investigate the balance of powers in 2D scattering problems
Liberal Olleta, Íñigo; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (EMW Publishing, 2013)
Artículo / Artikulua
Circuit and multipolar approaches are presented to investigate the correlation between absorption and scattering processes in 2D problems. This investigation was inspired by earlier works of Prof.R.E. Collin, which pointed ... -
Comparación entre antenas cónicas corrugadas y antenas gaussianas corrugadas
Teniente Vallinas, Jorge; Gonzalo García, Ramón ; Río Bocio, Carlos del (2002)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, a study of two equal size corrugated horn antennas; a conical and a gaussian profiled horn antenna (GPHA) has been developed. It will be demonstrated that GPHA´s provide lower sidelobes and wider bandwidths, ... -
Comparison of fourth-harmonic and combined doubler/subharmonic mixer with integrated MMIC based local oscillator
Pérez Escudero, José Manuel; Quemada Mayoral, Carlos ; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo (IEEE, 2019)
Contribución a congreso / Biltzarrerako ekarpena
In this paper a comparison between a fourth harmonic mixer and a combined doubler/subharmonic mixer based on Schottky diodes working at 300 GHz with MMIC Local Oscillator (LO) integrated in a single enclosing is presented. ... -
A comprehensive analysis of the absorption spectrum of conducting ferromagnetic wires
Liberal Olleta, Íñigo; Ederra Urzainqui, Íñigo ; Gómez Polo, Cristina ; Labrador Otamendi, Alberto; Pérez de Landazábal Berganzo, José Ignacio ; Gonzalo García, Ramón (IEEE, 2012)
Artículo / Artikulua
A detailed analysis of the absorption spectrum of conductive ferromagnetic wires is presented. The absorption spectrum is computed from the solution to the scattering problem, and circuit models are formulated to clarify ... -
Conical versus gaussian profiled corrugated horn antennas
Teniente Vallinas, Jorge; Gonzalo García, Ramón ; Río Bocio, Carlos del (IEEE, 2002)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, a study of two equal size corrugated horn antennas; a conical and a gaussian profiled horn antenna (GPHA) has been developed. It will be demonstrated that GPHA´s provide lower sidelobes and wider ... -
Consideraciones de paraxialidad en modos gaussianos de orden superior
Ruiz de la Cuesta, María Teresa; Río Bocio, Carlos del; Gonzalo García, Ramón ; Sorolla Ayza, Mario (1996)
Contribución a congreso / Biltzarrerako ekarpena
Usually, the gaussian beam modes are assumed to be solutions of the wave equation in the free space. Nevertheless, these modes are obtained supposing some paraxial restrictions. Therefore, we will have to check if our ... -
Corrugated horn antenna noise temperature characterisation for the NRL water vapor millimeter-wave spectrometer project
Teniente Vallinas, Jorge; Gómez, R.M.; Maestrojuán Biurrun, Itziar ; Rebollo Mugueta, Ainara ; Gonzalo García, Ramón ; Río Bocio, Carlos del (2011)
Contribución a congreso / Biltzarrerako ekarpena
In this paper the antenna noise temperature for two different corrugated horn antennas (old model and new model) for NRL WVMS is being characterized. The whole optical system will be simulated with Ticra’s GRASP software, ... -
Decoupling of multifrequency dipole antenna arrays for microwave imaging applications
Sáenz Sáinz, Elena; Guven, K.; Ozbay, Ekmel; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón (Hindawi Publishing Corporation, 2010)
Artículo / Artikulua
The mutual coupling between elements of a multifrequency dipole antenna array is experimentally investigated by S-parameter measurements and planar near-field scanning of the radiated field. A multifrequency array with ... -
A dedicated numerical technique for field simulations of antennas on electromagnetic band-gap substrates
Hon, B.P. de; Beurden, M.C. van; Gonzalo García, Ramón; Martínez Pascual, Beatriz ; Ederra Urzainqui, Íñigo ; Río Bocio, Carlos del ; Azcona, L.; Alderman, B.; Huggard, P.G.; Marchand, L.; Maagt, Peter de (2004)
Contribución a congreso / Biltzarrerako ekarpena
