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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Kopyt, Paweł
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2020Measurement of the Complex Anisotropic Permittivity of Microwave Laminatescitations
- 2020Characterization of dielectric materials for 5G telecommunications with a Fabry-Perot open resonator
- 2020Electrodynamic theory of ferromagnetic resonance and its applications in precise measurements of ferromagnetic linewidth, permeability tensor and saturation magnetizationcitations
- 2019W-Band Measurements of Low-Loss Dielectrics with a Fabry-Perot Open Resonatorcitations
- 2019Electrodynamic improvements to the theory of magnetostatic modes in ferrimagnetic spheres and their applications to saturation magnetization measurementscitations
- 2019Measurement of Dielectrics from 20 to 50 GHz with a Fabry-Perot Open Resonatorcitations
- 2018Coordinate Transformation Approach to the Solution of the Fabry-Perot Open Resonatorcitations
- 2018Measurement of Electromagnetic Properties of Food Products and Liquidscitations
- 2017Ferromagnetic Resonance Revised – Electrodynamic Approachcitations
- 2017Modeling of Silicon-Based Substrates of Patch Antennas Operating in the Sub-THz Rangecitations
- 2016Open-ended waveguide measurement of liquids at millimeter wavelengths
- 2010Dielectric properties of chiral honeycombs – Modelling and experimentcitations
- 2004Determination of complex permittivity with neural networks and FDTD modelingcitations
Places of action
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article
Dielectric properties of chiral honeycombs – Modelling and experiment
Abstract
Electromagnetic properties of mechanically chiral honeycomb structures are investigated. In extension to previous works on the subject, rigorous analysis is performed above the quasi-static frequency range. Theoretical considerations and full wave 3D electromagnetic simulations are conducted to prove that, for the honeycombs of interest, higher order harmonics due to structure periodicity are attenuated away from the panel surface at frequencies up to several GHz, which covers a number of popular ISM bands. As a consequence, only individual plane TEM waves are observable at practical locations of transmitters and receivers away from the panel. Under the same conditions, it is demonstrated that the structural chirality does not translate into chiral electromagnetic behaviour. In other words, orthogonal modes of the honeycomb scenarios are linearly polarised, and transformation of the electromagnetic energy into heat occurs purely as a result of classical conductivity or loss tangent, which are low for the low-density panels made of low-loss dielectric cores. This indicates that EMC or shielding characteristics can only be designed either by utilizing the phenomenon of wave reflections, or by equipping the panels with additional foils on surfaces or absorbing foams in air volumes. While precise measurements of final-sized honeycomb panels remain as a challenging task for further work, preliminary experiments have been performed showing good agreement with theoretical and computed predictions.