18 results on '"Iglesias, Daniel"'
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2. Virtual Engineering of a Fusion Reactor: Application to Divertor Design, Manufacture, and Testing
- Author
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Barrett, Thomas R., primary, Evans, Llion M., additional, Fursdon, Mike, additional, Domptail, Fred, additional, McIntosh, Simon C., additional, Iglesias, Daniel, additional, and Surrey, Elizabeth, additional
- Published
- 2019
- Full Text
- View/download PDF
3. Enhancement of the Multipactor Threshold Inside Nonrectangular Iris
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Semenov, Vladimir E., primary, Rakova, Elena I., additional, Sorolla, Eden, additional, Gonzalez-Iglesias, Daniel, additional, Monerris, Oscar, additional, Gimeno, Benito, additional, Puech, Jerome, additional, and Sombrin, Jacques B., additional
- Published
- 2018
- Full Text
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4. Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite
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Gonzalez-Iglesias, Daniel, primary, Gomez, Alvaro, additional, Gimeno, Benito, additional, Fernandez, Oscar, additional, Vegas, Angel, additional, Casas, Fernando, additional, Anza Hormigo, Sergio, additional, Vicente, Carlos, additional, Gil, Jordi, additional, Mata, Rafael, additional, Montero, Isabel, additional, Boria, Vicente E., additional, and Raboso, David, additional
- Published
- 2016
- Full Text
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5. Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite
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Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Ministerio de Economía y Competitividad, European Space Agency, European Regional Development Fund, Gonzalez Iglesias, Daniel, Gomez, Alvaro, Gimeno Martinez, Benito, Fernández, o., Vegas, A., Casas, Fernando, Anza Hormigo, Sergio, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Mata Sanz, Rafael, Montero, Isabel, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Ministerio de Economía y Competitividad, European Space Agency, European Regional Development Fund, Gonzalez Iglesias, Daniel, Gomez, Alvaro, Gimeno Martinez, Benito, Fernández, o., Vegas, A., Casas, Fernando, Anza Hormigo, Sergio, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Mata Sanz, Rafael, Montero, Isabel, Boria Esbert, Vicente Enrique, and Raboso García-Baquero, David
- Abstract
In this paper, the multipactor RF breakdown in a parallel-plate waveguide partially filled with a ferrite slab magnetized normal to the metallic plates is studied. An external magnetic field is applied along the vertical direction between the plates in order to magnetize the ferrite. Numerical simulations using an in-house 3-D code are carried out to obtain the multipactor RF voltage threshold in this kind of structures. The presented results show that the multipactor RF voltage threshold at certain frequencies becomes considerably lower than for the corresponding classical metallic parallel-plate waveguide with the same vacuum gap
- Published
- 2016
6. Multipactor RF Breakdown in Coaxial Transmission Lines With Digitally Modulated Signals
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Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, ESA-VSC High Power RF Space Laboratory, European Space Agency, Gonzalez Iglesias, Daniel, Monerris Belda, Óscar, Gimeno Martinez, Benito, Díaz, María Elena, Boria Esbert, Vicente Enrique, Martín Iglesias, Petronilo, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, ESA-VSC High Power RF Space Laboratory, European Space Agency, Gonzalez Iglesias, Daniel, Monerris Belda, Óscar, Gimeno Martinez, Benito, Díaz, María Elena, Boria Esbert, Vicente Enrique, and Martín Iglesias, Petronilo
- Abstract
The aim of this paper is the study of the RF multipactor breakdown in coaxial transmission lines excited by a single carrier with a digitally modulated signal. Employing an in-house developed code, numerical simulations are performed to determine the RF multipactor voltage threshold for several digitally modulated signals under different modulations schemes: quadrature phase-shift keying, 16-quadrature amplitude modulation, 16-amplitude and phase-shift keying, and 32-amplitude and phase-shift keying. Moreover, a coarse method based on the envelope integration to determine the RF multipactor voltage threshold when involving arbitrary digital modulations is also presented. These results are also compared with the 20-gap-crossing rule used in the space standard document ECSS-E20-1A. In order to validate the theoretical results, a test campaign was performed for realistic modulated signals, finding good agreement between theoretical predictions and experimental data.
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- 2016
7. Multipactor RF Breakdown in Coaxial Transmission Lines With Digitally Modulated Signals
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Gonzalez-Iglesias, Daniel, primary, Monerris, Oscar, additional, Martinez, Benito Gimeno, additional, Diaz, Maria Elena, additional, Boria, Vicente E., additional, and Iglesias, Petronilo Martin, additional
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- 2016
- Full Text
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8. Experimental Analysis of the Multipactor Effect With RF Pulsed Signals
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Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Gonzalez Iglesias, Daniel, Monerris Belda, Óscar, Diaz, M.E., Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Gonzalez Iglesias, Daniel, Monerris Belda, Óscar, Diaz, M.E., Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, and Raboso García-Baquero, David
- Abstract
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works., The main goal of this letter is the analysis of the multipactor effect within a coaxial waveguide excited by an RF pulsed signal. The variation of the multipactor RF voltage thresholdwiththe ON interval length of the pulse has been analyzed. To reach this aim, an in-house multipactor simulation code based on the Monte-Carlo algorithm has been implemented. The numerical simulations show that the multipactor RF voltage threshold increases as the ON pulse interval diminishes. In addition, an experiment was carried out to validate the proposed theoretical model, and demonstrating the excellent agreement between the theory and the experimental data. Finally, the results are compared with the 20-gap-crossing rule used in the space standard document (ECSS-E20-1A).
- Published
- 2015
9. Multipactor mitigation in coaxial lines by means of permanent magnets
- Author
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Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, European Regional Development Fund, Gonzalez Iglesias, Daniel, Pérez Pastor, Antonio María, Anza Hormigo, Sergio, Vague Cardona, José Joaquín, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Caspers, Fritz, Conde, Luis, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, European Regional Development Fund, Gonzalez Iglesias, Daniel, Pérez Pastor, Antonio María, Anza Hormigo, Sergio, Vague Cardona, José Joaquín, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Caspers, Fritz, and Conde, Luis
- Abstract
The main aim of this paper is the analysis of the feasibility of employing permanent magnets for the multipactor mitigation in a coaxial waveguide. First, the study of a coaxial line immersed in a uniform axial magnetic field shows that multipactor can be suppressed at any RF if the external magnetic field is strong enough. Both theoretical simulations and experimental tests validate this statement. Next, multipactor breakdown of a coaxial line immersed in a hollow cylindrical permanent magnet is analyzed. Numerical simulations show that multipactor can be suppressed in a certain RF range. The performed experimental test campaign demonstrates the capability of the magnet to avoid the multipactor electron multiplication process.
- Published
- 2014
10. Multipactor effect in a parallel-plate waveguide partially filled with magnetized ferrite
- Author
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Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Gonzalez Iglesias, Daniel, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Gómez, Álvaro, Vegas, Ángel, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Gonzalez Iglesias, Daniel, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Gómez, Álvaro, and Vegas, Ángel
- Abstract
The aim of this paper is the analysis of the multipactor effect in a parallel-plate waveguide when a ferrite slab, transversally magnetized by a static magnetic field parallel to the waveguide walls, is present. Employing an in-house developed code, numerical simulations are performed to predict the multipactor radio frequency voltage threshold in such a ferrite-loaded waveguide. Variations of the ferrite magnetization field strength and the ferrite slab height are analyzed. Effective electron trajectories are also shown for a better understanding of the breakdown phenomenon, finding different multipactor regimes.
- Published
- 2014
11. Multipactor Mitigation in Coaxial Lines by Means of Permanent Magnets
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Gonzalez-Iglesias, Daniel, primary, Perez, Antonio M., additional, Anza, Sergio, additional, Cardona, Joaquin Vague, additional, Gimeno, Benito, additional, Boria, Vicente E., additional, Raboso, David, additional, Vicente, Carlos, additional, Gil, Jordi, additional, Caspers, Fritz, additional, and Conde, Luis, additional
- Published
- 2014
- Full Text
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12. Multipactor Effect in a Parallel-Plate Waveguide Partially Filled With Magnetized Ferrite
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Gonzalez-Iglesias, Daniel, primary, Gimeno, Benito, additional, Boria, Vicente E., additional, Gomez, Alvaro, additional, and Vegas, Angel, additional
- Published
- 2014
- Full Text
- View/download PDF
13. Analysis of multipactor effect using a phase-shift keying single-carrier digital modulated signal
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Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Gonzalez Iglesias, Daniel, Belloch Rodríguez, María Pilar, Monerris Belda, Óscar, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Semenov, Vladimir E., Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Gonzalez Iglesias, Daniel, Belloch Rodríguez, María Pilar, Monerris Belda, Óscar, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, and Semenov, Vladimir E.
- Abstract
The main aim of this paper is the analysis of the multipactor effect within a coaxial waveguide structure excited by a phase-shift keying single-carrier digital modulated signal. To reach this aim, we developed in-house a software code which is able to predict the RF multipactor input voltage threshold. This code is based on the single effective electron model, and considers the space charge effect. Numerical simulations are performed for binary phase-shift keying and quadrature phase-shift keying modulated signals. In addition, an experiment is carried out to validate the proposed theoretical model. We have demonstrated that the digital modulation of the single-carrier signal may modify the RF voltage threshold in comparison to the nonmodulated scenario. Good agreement between theory and experimental data is found.
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- 2013
14. Multipactor in a Coaxial Line Under the Presence of an Axial DC Magnetic Field
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Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Ministerio de Ciencia e Innovación, Gonzalez Iglesias, Daniel, Pérez Pastor, Antonio María, Anza Hormigo, Sergio, Vague Cardona, José Joaquín, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Caspers, F., Conde, Luis, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Ministerio de Ciencia e Innovación, Gonzalez Iglesias, Daniel, Pérez Pastor, Antonio María, Anza Hormigo, Sergio, Vague Cardona, José Joaquín, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Raboso García-Baquero, David, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Caspers, F., and Conde, Luis
- Abstract
The main goal of this letter is the analysis of the multipactor effect within a coaxial waveguide structure when an external axial dc magnetic field is applied. We have designed and manufactured a coaxial waveguide sample that has been immersed within a long solenoid. Numerical and experimental results confirm a significant change in the RF breakdown behavior with regard to the case without the axial dc magnetic field, as well as the existence of single- and double-surface multipactor regimes. Good agreement between theory and experimental data has been found.
- Published
- 2012
15. Multipactor susceptibility charts for ridge and multiridge waveguides
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Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Gonzalez Iglesias, Daniel, Soto Pacheco, Pablo, Anza Hormigo, Sergio, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Vicente Quiles, Carlos Pascual, Gil Raga, Jordi, Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Gonzalez Iglesias, Daniel, Soto Pacheco, Pablo, Anza Hormigo, Sergio, Gimeno Martinez, Benito, Boria Esbert, Vicente Enrique, Vicente Quiles, Carlos Pascual, and Gil Raga, Jordi
- Abstract
“© 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”, The aim of this paper is to study the multipactor radio-frequency breakdown voltage in several ridge and multiridge waveguide configurations. First, multipactor susceptibility charts for several types of ridged waveguides have been computed using the commercial software FEST3D. Next, these charts have been used to predict multipactor threshold values for a bandpass filter and a quasi-low-pass filter both containing ridge waveguide sections. Furthermore, multipactor simulations using FEST3D are carried out to calculate the multipactor threshold of the aforementioned structures. A good agreement between predictions and simulations has been found for both filter examples.
- Published
- 2012
16. Analysis of Multipactor Effect Using a Phase-Shift Keying Single-Carrier Digital Modulated Signal
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Gonzalez-Iglesias, Daniel, primary, Rodriguez, Maria Pilar Belloch, additional, Belda, Oscar Monerris, additional, Gimeno, Benito, additional, Boria, Vicente E., additional, Raboso, David, additional, and Semenov, Vladimir E., additional
- Published
- 2013
- Full Text
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17. Multipactor Susceptibility Charts for Ridge and Multiridge Waveguides
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Gonzalez-Iglesias, Daniel, primary, Soto, Pablo, additional, Anza, Sergio, additional, Gimeno, Benito, additional, Boria, Vicente E., additional, Vicente, Carlos, additional, and Gil, Jordi, additional
- Published
- 2012
- Full Text
- View/download PDF
18. HorNet: Microblogging for a Contributory Social Network
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Lazaro Iglesias, Daniel, primary, Marques, Joan-Manuel, additional, Cabrera, Guillem, additional, Rifa-Pous, Helena, additional, and Montane, Albert, additional
- Published
- 2012
- Full Text
- View/download PDF
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