Publications de Apostolos Sounas

Modeling of Long-Term Multipactor Evolution in Microwave Components Including Dielectric Layers

Multipactor is a resonant vacuum discharge occurring in microwave components of satellite systems as well as in particle accelerators. Due to its undesirable effects, multipactor analysis constitutes a mandatory step in the design of modern satellite compo ...

EPFL2015

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

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

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

2014

Long Term Multipactor Evolution in the Case of Amplitude Modulation Schemes

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

2014

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

Effect of Digitally Modulated Signals on Multipactor Breakdown

Juan Ramon Mosig, Michael Mattes, Apostolos Sounas

This paper studies the effect of digitally modulated signals on the evolution of the multipaction phenomenon. Multipactor is numerically analyzed in a parallel plates waveguide for a variety of common digital modulation techniques. Breakdown power threshol ...

Ieee2013

Effect of digitally modulated signals on Multipactor breakdown

Juan Ramon Mosig, Michael Mattes, Apostolos Sounas

2013

Explicit scheme for indoor propagation modeling based on the hybrid parabolic-integral equation method

Apostolos Sounas

An explicit scheme for wave propagation modeling of indoor environments is presented. The technique is based on the hybrid parabolic-integral equation method, which provides a correction to the parabolic equation method through a Green's function formulati ...

2012

Multipactor Analysis under Digitally Modulated Signals

Michael Mattes, Apostolos Sounas

2012

Analysis of Multipactor Effect in Coaxial Lines

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

2011