Publications de Benjamin Fuchs

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

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

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

Design Considerations for Wearable Antennas

Anja Skrivervik, Jovanche Trajkovikj, Benjamin Fuchs, Zvonimir Sipus

With the development of generalized connectivity and the increased use of Body Area Networks, wearable antennas have become ubiquitous in the last decade. Their design presents a challenge, as they per definition are located at the interface between free s ...

Ieee2016

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

Low-Profile Direction Finding System in Ku-Band Using SIW Horn Antennas

Juan Ramon Mosig, Jean-François Zürcher, Benjamin Fuchs, Marc Esquius Morote

Horizon House Publications Inc2015

Low-profile direction finding system with SIW horn antennas for vehicular applications

Juan Ramon Mosig, Jean-François Zürcher, Benjamin Fuchs, Marc Esquius Morote

2014

Low-profile SIW Horn Antenna Array with Interconnection to MMICs

Juan Ramon Mosig, Jean-François Zürcher, Benjamin Fuchs, Marc Esquius Morote

2014

A printed transition for matching improvement of SIW horn antennas

Juan Ramon Mosig, Jean-François Zürcher, Benjamin Fuchs, Marc Esquius Morote

The substrate integrated waveguide (SIW) technology allows to construct several types of commonly used antennas in a planar way. However, frequency limitations associated to commercial substrates appear in the implementation of certain types of antennas, e ...

Institute of Electrical and Electronics Engineers2013

Shaped Beam Synthesis of Arrays via Sequential Convex Optimizations

Juan Ramon Mosig, Anja Skrivervik, Benjamin Fuchs

A method to synthesize shaped beams with antenna arrays is presented. Specifically, the element excitations are determined such that the array radiates a power pattern that approximates a desired shape. To efficiently solve this problem, an iterative algor ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Enhancing the Performances of H-plane SIW Horn Antennas

Juan Ramon Mosig, Benjamin Fuchs, Marc Esquius Morote

The performances of SIW horns antennas diminish significantly when the substrate thickness is much smaller than the free space wavelength lambda(0). Specifically, the mismatch between the antenna aperture and the air yields to unwanted back radiation and p ...

Ieee2013

Synthesis of uniform amplitude focused beam arrays

Juan Ramon Mosig, Anja Skrivervik, Benjamin Fuchs

An iterative algorithm to synthesize uniform amplitude focused beam arrays is presented. While the number of array elements and the excitations are fixed and known, the locations of the elements are optimized to radiate a narrow beam low sidelobe pattern. ...

IEEE2013

Extended SIW for TEm0 and TE(0)n Modes and Slotline Excitation of the TE01 Mode

Juan Ramon Mosig, Jean-François Zürcher, Benjamin Fuchs, Marc Esquius Morote

A substrate integrated guide which allows the propagation of both TEm0 and TE0n modes is presented, the Extended Substrate Integrated Waveguide (ESIW). Its structure combines the working principles of SIWs and SINRD guides. While the performances of the ES ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Synthesis of sparse arrays with focused or shaped beampattern via sequential convex optimizations

Benjamin Fuchs

An iterative procedure for the synthesis of sparse arrays radiating focused or shaped beampattern is presented. The algorithm consists in solving a sequence of weighted l(1) convex optimization problems. The method can thus be readily implemented and effic ...

Institute of Electrical and Electronics Engineers2012

Oblique incidence design of meander-line polarizers for dielectric lens antennas

Juan Ramon Mosig, Jean-François Zürcher, Marco Letizia, Benjamin Fuchs

A method to design planar multilayer meander-line polarizers is given. The proposed procedure is based on transmission line circuit theory and on full-wave unit cell analysis in frequency domain. The hybrid combination of those two techniques paves the way ...

2012

Synthesis of uniform amplitude focused beam arrays

Juan Ramon Mosig, Anja Skrivervik, Benjamin Fuchs

An iterative procedure for the synthesis of uniform amplitude focused beam arrays is presented. Specifically, the goal is to optimize the locations of a fixed number of array elements with known excitations in order to synthesize narrow-beam low-sidelobe p ...

2012

Example of data telemetry for biomedical applications: an in vivo experiment

Juan Ramon Mosig, Anja Skrivervik, Jean-François Zürcher, Léandre Bolomey, Eric Meurville, Yann Barrandon, Francesco Merli, François Gorostidi, Benjamin Fuchs

This letter describes a data telemetry biomedical experiment. An implant, consisting of a biometric data sensor, electronics, an antenna, and a biocompatible capsule, is described. All the elements were co-designed in order to maximize the transmission dis ...

Institute of Electrical and Electronics Engineers2012

Printed transition for SIW horn antennas - Analytical model

Juan Ramon Mosig, Benjamin Fuchs, Marc Esquius Morote

A printed transition is proposed to overcome problems limiting the performances of SIW horn antennas when built in thin substrates (thickness <λ 0/10). An analytical model to analyze its behavior is given along with design guidelines. The development of ...

2012

Sparse array synthesis via sequential convex optimizations

Juan Ramon Mosig, Anja Skrivervik, Benjamin Fuchs

2012