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Francisco Edén Sorolla Rosario

Cette personne a quitté l’EPFL

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Publications associées (23)

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Microwave Corona Breakdown Prediction in Arbitrarily-Shaped Waveguide Based Filter

Michael Mattes, Francisco Edén Sorolla Rosario

This paper describes an efficient algorithm to predict the RF gas breakdown power threshold in microwave devices with complex geometries. The two necessary calculations when investigating such a phenomenon have been performed: on the one hand, the computat ...

Institution of Engineering and Technology2010

Contribution to modeling multipactor and corona discharges in high power electromagnetic fields

Francisco Edén Sorolla Rosario

Multipactor and microwave corona breakdown are two high frequency discharges occurring within microwave components for space applications as well as within particle accelerators. The appearance of these phenomena results in the exponential growth of the el ...

EPFL2012

Multipactor saturation in parallel-plate waveguides

Michael Mattes, Francisco Edén Sorolla Rosario

The saturation stage of a multipactor discharge is considered of interest, since it can guide towards a criterion to assess the multipactor onset. The electron cloud under multipactor regime within a parallel-plate waveguide is modeled by a thin continuous ...

2012

Microwave gas breakdown in elliptical waveguides

Michael Mattes, Francisco Edén Sorolla Rosario, Ioannis Koufogiannis

This paper analyzes the microwave gas discharge within elliptical waveguides excited by the fundamental mode. The Rayleigh-Ritz method has been applied to solve the continuity equation. The eigenvalue problem defined by the breakdown condition has been sol ...

American Institute of Physics (AIP)2014

Analyzing Corona breakdown with a finite element-based electromagnetic solver

Juan Ramon Mosig, Michael Mattes, Francisco Edén Sorolla Rosario, Ioannis Koufogiannis

This paper demonstrates how an already developed finite element code for solving electromagnetic problems can be manipulated and simply extended so as to investigate complicated corona breakdowns. A safe criterion based on the eigenvalue analysis is used i ...

2013

NxN Coupling Matrix Synthesis of Dissipative Microwave Filters

Michael Mattes, Francisco Edén Sorolla Rosario

In this communication, the coupling matrix synthesis of dissipative microwave filters is analyzed and compared to the synthesis of lossless filters. A modified definition of the vector matrix product allows using the same synthesis procedure in both cases. ...

2011

Algorithm to calculate a large number of roots of the cross-product of Bessel functions

Juan Ramon Mosig, Michael Mattes, Francisco Edén Sorolla Rosario

This paper describes an algorithm to calculate a large number of roots of the cross-product of Bessel functions and of their first derivatives. The algorithm initially finds the roots of the zeroth order using an auxiliary function that exhibits the same r ...

Institute of Electrical and Electronics Engineers2013

Space charge effects for multipactor in coaxial lines

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

Multipactor is a hazardous vacuum discharge produced by secondary electron emission within microwave devices of particle accelerators and telecommunication satellites. This work analyzes the dynamics of the multipactor discharge within a coaxial line for t ...

American Institute of Physics2015

Modeling microwave/electron-cloud interaction

Michael Mattes, Francisco Edén Sorolla Rosario

Starting from the separate codes BI-RME and ECLOUD or PyECLOUD, we are developing a novel joint simulation tool, which models the combined effect of a charged particle beam and of microwaves on an electron cloud. Possible applications include the degradati ...

2013

Globally convergent algorithm to find the zeros of the cross-product of Bessel functions

Michael Mattes, Francisco Edén Sorolla Rosario

This paper shows the construction of an algorithm to calculate the roots of both, the cross-product of Bessel functions respectively of their first derivatives. The algorithm has shown globally convergent behavior for a large range of values of the argumen ...

2011

Multipactor Analysis in Parallel-Plate Waveguides Loaded by a Single Dielectric Slab

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

This paper studies the evolution of the multipactor discharge inside a parallel-plate waveguide partially loaded by a dielectric slab. The effect of static charges on the dielectric surface as well as of induced charges on the metallic plates are included. ...

2014

Power Sub-Miniature (PSM) Connectors for Space Applications

Michael Mattes, Francisco Edén Sorolla Rosario

This paper presents a newly developed SMA-like connector for High Power Space applications that can withstand more than 1500 Watts in the P- and L-Band for a pulsed signal of 2% duty-cycle. This implies an improvement of 50 per cent compared to other power ...

2011

High Power SMA Connectors

Michael Mattes, Francisco Edén Sorolla Rosario

On board of satellites traditionally Travelling Wave Tube Amplifiers (TWTAs) together with standard waveguide technology were used for transmitters in telecommunication payload systems. With the advent of Solid State Power Amplifiers (SSPAs) printed circui ...

2008

Ionization Rates: a Comparative Study to Predict Corona Breakdown

Michael Mattes, Francisco Edén Sorolla Rosario, Ioannis Koufogiannis

2011

Analysis of Multipactor Effect in Coaxial Lines

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

2011

Analysis of Corona Breakdown in Elliptical Waveguides

Michael Mattes, Francisco Edén Sorolla Rosario, Ioannis Koufogiannis

2014

Corona Discharge in Microwave Devices: A Comparison of Ionization Rate Models

Michael Mattes, Francisco Edén Sorolla Rosario

In this paper we compare the predicted Corona breakdown power threshold obtained by different ionization rate models for an infinite parallel-plate waveguide. We point out the lack of a unanimous model of the ionization rate for RF fields and study the dif ...

2010

Investigation of Multipactor Steady State in Parallel-Plate Waveguides Loaded by a Single Dielectric Slab

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

2014

Modelling the interaction of electron clouds and microwaves

Michael Mattes, Francisco Edén Sorolla Rosario

This paper deals with the interaction of electron clouds with microwaves inside beam-pipes like the one of the LHC in CERN. The details of the model and recent results are presented during the conference. ...

Ieee2012

Discussion On The Efficient Evaluation Of The Green's Functions Of Punctual Sources Inside Infinite Parallel Plate Waveguides

Francisco Edén Sorolla Rosario

In this paper, we present a discussion on the performances of different existing methods for computing the Green's functions of an infinite parallel plate waveguide, considering point sources as excitation. These kind of Green's functions are appropriate f ...

2009