Publications by Michael Mattes

Stratified spherical model for microwave imaging of the brain: Analysis and experimental validation of transmitted power

Juan Ramon Mosig, Michael Mattes, Jean-Philippe Thiran, Mina Bjelogrlic, Benjamin Fuchs

2018

Comparison of Regularization Techniques for Microwave Imaging of Brain Stroke

Michael Mattes, Jean-Philippe Thiran, Mina Bjelogrlic, Benjamin Fuchs

This paper studies the performance of three wellknown regularization techniques to solve the inverse problem encountered in differential microwave imaging for brain stroke applications. Reconstructions from a multi-illumination configuration based on measu ...

2018

Experimental verification of optimal frequency range for microwave head imaging

Juan Ramon Mosig, Michael Mattes, Jean-Philippe Thiran, Mina Bjelogrlic, Benjamin Fuchs

This work presents the experimental verification of the power transmission of a radiating field into the human head for Microwave Imaging (MWI) applications. We aim at finding the range of frequencies that optimize the power scattered by any anomalies from ...

2017

On the born approximation for differential microwave imaging using volume integral equation formulation

Juan Ramon Mosig, Michael Mattes, Mina Bjelogrlic, Benjamin Fuchs

The Degree of Non-Linearity (DNL) of scattering problems and specifically of differential Microwave Imaging (dMWI) problems is addressed in this paper. The quantification of the DNL amounts to evaluate the validity range of the Born first order (linear) ap ...

2016

Contributions to 3D differential microwave imaging

Michael Mattes, Mina Bjelogrlic, Benjamin Fuchs

This paper presents new contributions to forward and inverse problems in 3D differential microwave imaging. This technique is well suited to monitor a pathological evolution, for instance the brain stroke of a patient. The forward problem is solved using a ...

2016

Volume Integral Equation Formulation for Medical Applications

Juan Ramon Mosig, Michael Mattes, Mina Bjelogrlic, Ioannis Koufogiannis, Santiago Capdevila Cascante

In recent years, there is a considerable and growing interest in developing fast integral equation methods for solving Maxwell’s equations. Volume integral equations are a versatile technique to model inhomogeneous scattering objects. Numerical tests show ...

2015

On the Development and Evaluation of Spatial-Domain Green's Functions for Multilayered Structures With Conductive Sheets

Juan Ramon Mosig, Michael Mattes, Ioannis Koufogiannis

This work focuses on Green's functions (GFs) of planar multilayered structures that may include an arbitrary number of conductive sheets. The spectral-domain GFs are derived through an automatized strategy based on the propagator matrix technique, while th ...

Institute of Electrical and Electronics Engineers2015

Numerical Assessment of Brain Stroke Follow-Up via Differential Microwave Imaging

Juan Ramon Mosig, Michael Mattes, Mina Bjelogrlic

This paper proposes a numerical assessment of brain stroke follow-up via differential Microwave Imaging. The aim is to follow the evolution of the patient’s stroke growth and location, in order to support decisions in the clinical treatment. We present a f ...

2015

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

Rigorous evaluation of propagation losses in arbitrarily shaped waveguide structures using boundary integral – resonant mode expansion and perturbation of boundary conditions

Michael Mattes

The accurate consideration of propagation losses in arbitrarily shaped waveguide-based structures is studied in this paper. For such a purpose, a software tool based on the perturbation of the boundary conditions on the waveguide metallic walls and on the ...

Inst Engineering Technology-Iet2014

On the development and evaluation of spatial domain Green Functions for multilayered structures with conductive sheets

Juan Ramon Mosig, Michael Mattes, Ioannis Koufogiannis

This work focuses on Green Functions (GFs) of planar multilayered structures that may include arbitrary number of conductive sheets. The spectral domain GFs are derived through an automatized strategy based on the propagator matrix technique, while the spa ...

2014

New Inverstigations of RF Breakdown in Microwave Transmission Lines

Juan Ramon Mosig, Michael Mattes, Alejandro Alvarez

2014

Orthomode transducer for dual polarized substrate integrated circuits and antennas

Juan Ramon Mosig, Michael Mattes, Marc Esquius Morote

A complete dual polarized substrate integrated structure is presented. It comprises planar excitation schemes for both orthogonal TE10 and TE01 modes along with an orthomode transducer (OMT) to combine/split them. The whole structure is compact (only 2 lay ...

2014

Efficient Analysis of Shielding Effectiveness of Metallic Rectangular Enclosures Using Unconditionally Stable Time-Domain Integral Equations

Juan Ramon Mosig, Michael Mattes, Hamidreza Karami

This paper proposes an efficient modeling technique for transient electromagnetic analysis of a rectangular metallic enclosure with multiple apertures, using the surface equivalent principle (SEP) and integral equations. The SEP is used to replace the aper ...

2014

Extremely phase stable RF-cable for space applications

Michael Mattes, Francisco Edén Sorolla Rosario, Ioannis Koufogiannis

2014

Long Term Multipactor Evolution in the Case of Amplitude Modulation Schemes

Michael Mattes, Francisco Edén Sorolla Rosario, Apostolos Sounas

2014

Analysis of Corona Breakdown in Elliptical Waveguides

Michael Mattes, Francisco Edén Sorolla Rosario, Ioannis Koufogiannis

2014

Multipactor prediction in Multicarrier Systems

Michael Mattes

2014

Orthomode Transducer and Dual-Polarized Horn Antenna in Substrate Integrated Technology

Juan Ramon Mosig, Michael Mattes, Marc Esquius Morote

A dual-polarized system fully implemented in substrate integrated technology is presented. It comprises an Orthomode Transducer (OMT) with planar excitation schemes for both orthogonal TE10 and TE01 modes and a dual-polarized horn antenna. The whole struct ...

Institute of Electrical and Electronics Engineers2014