A5101856441- Antenna Design and Analysis
- Antenna Design and Optimization
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Microwave Imaging and Scattering Analysis
- Electromagnetic Compatibility and Measurements
- Metamaterials and Metasurfaces Applications
- Ultrasonics and Acoustic Wave Propagation
- Geophysical Methods and Applications
- Terahertz technology and applications
- Ultrasound and Hyperthermia Applications
- Ultrasound Imaging and Elastography
- Electromagnetic Scattering and Analysis
- Mechanical Circulatory Support Devices
- Wireless Body Area Networks
- Heparin-Induced Thrombocytopenia and Thrombosis
- Millimeter-Wave Propagation and Modeling
- GNSS positioning and interference
- Peripheral Neuropathies and Disorders
- Radio Astronomy Observations and Technology
Democritus University of Thrace
2022
Netherlands Organisation for Applied Scientific Research
2020
Université de Rennes
2016-2020
Institut d'Électronique et des Technologies du numéRique
2016-2019
Institut Supérieur de l'Électronique et du Numérique
2016-2019
Centre National de la Recherche Scientifique
2016
Université Européenne de Bretagne
2016
teaching and research institutions in France or abroad, from public private centers.L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement recherche français étrangers, laboratoires publics privés.
Objective: The potentialities of improving the penetration millimeter waves for breast cancer imaging are here explored. Methods: A field focusing technique based on a convex optimization method is proposed, capable increasing level inside breast-emulating stratification. Results: theoretical results numerically validated via design and simulation two circularly polarized antennas. experimental validation designed antennas, using tissue-mimicking phantoms, provided, being in good agreement...
The manipulation of the near-field (NF) is a challenging topic in electromagnetics, carrying essential importance for several applications. In this paper, we develop an algorithm capable shaping NF 3-D domains according to given specifications. based on set theoretic approach and front-and-back iterative propagation scheme. latter realized using fast Fourier transforms (FFT), reducing required computational time. applied focal scenario. case, full control depth focus, spot diameter, sidelobe...
The generation of several beams with strict radiation requirements in the near field a radiating aperture is demonstrated here.An optimization scheme adopted to derive distribution generating required nearfield radiation.The tool based on set-theoretic approach and takes into account constraints profile polarization.The challenging case four independent different polarizations then considered.A tensorial metasurface synthesize derived fully control amplitude phase aperture.Measurement...
Near-field shaping at microwave or millimeter wave frequencies is an emerging field of study, able to accelerate a variety technologies. Applications from sensing medical imaging will benefit accurate near-field methods. In this communication, the use convex optimization shape near flat radiating aperture investigated. The proposed approach, that known provide optimal solutions, compared existing
The near-field (NF) regime is a highly challenging and rather unstudied area of electromagnetic (EM) fields due to the high mathematical complexity that it presents. Nevertheless, evanescent fields, present within near field, can offer extra flexibility freedom in molding close-to-the-antenna field. In this work we develop an algorithm capable shape EM according specifications 3D regions at distances Fresnel region radiating device. based on set theoretic approach frontand- back iterative...
Antenna near-field focusing is a research topic that recently attracting attention, due to its impact on wide number of trending applications. In this communication we propose methodology based convex optimization focus the scalar field radiated by planar continuous apertures. The capable inside piecewise stratified media and supported an easy-to-implement MATLAB package. addition, apply specific goals which render resulting aperture distributions realizable.
This work aims at showing the feasibility of performing 2D near-field focusing using a Leaky-Wave Lens (LWL) based on Sinusoidally Modulated Reactance Surfaces (SMRS). The polarization field focus is perpendicular to antenna aperture, due geometry structure. Electrically small focal distances are achieved, combined with very spot diameters. limitations this approach discussed, which mainly related prediction point. concept proven by simulations and experimental testing in progress.
Medical imaging using electromagnetic waves is a promising field of study, due to its non invasive nature and relatively low cost. Typically, it pursued at frequencies in the microwave regime provide adequate penetration depth. However, an increase frequency operation beneficial order improve resolution, but accompanied by increased tissue losses. In this work we investigate possibility depth systems for breast lower bound millimeter (30 GHz). The proposed technique consists near-field...
In this work a methodology to shape the near field of radiating apertures is presented. The technique, despite being generic, applied specific scenario shaping focal pattern 12λ focusing aperture at 30 GHz. main result comprises capability shrink/enlarge depth, without affecting spot diameter. To verify concept, acquired distribution mapped on Radial Line Slot Antenna (RLSA), which has been manufactured and measured, showing excellent results.