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Manufacturing of a Magnetic Composite Flexible Filament and Optimization of a 3D Printed Wideband Electromagnetic Multilayer Absorber in X-Ku Frequency Bands

Christophe Vong 1 Alexis Chevalier 2, 3 Azar Maalouf 4 Julien Ville 5 Jean-François Rosnarho 6 Vincent Laur 2 
1 Lab-STICC_UBO_MOM_MF
IBNM - Institut Brestois du Numérique et des Mathématiques, Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
2 Lab-STICC_SMART - Equipe Smart Materials and Related Technologies
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance : UMR6285
Abstract : With the multiplication of electronic devices in our daily life, there is a need for tailored wideband electromagnetic (EM) absorbers that could be conformed on any type of surface-like antennas for interference attenuation or military vehicles for stealth applications. In this study, a wideband flexible flat electromagnetic absorber compatible with additive manufacturing has been studied in the X-Ku frequency bands. A multilayer structure has been optimized using a genetic algorithm (GA), adapting the restrictions of additive manufacturing and exploiting the EM properties of loaded and non-loaded filaments, of which the elaboration is described. After optimization, a bi-material multilayer absorber with a thickness of 4.1 mm has been designed to provide a reflectivity below −12 dB between 8 and 18 GHz. Finally, the designed multilayer structure was 3D-printed and measured in an anechoic chamber, achieving −11.8 dB between 7 and 18 GHz. Thus, the development of dedicated materials has demonstrated the strong potential of additive technologies for the manufacturing of thin wideband flexible EM absorbers.
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https://hal.univ-brest.fr/hal-03706515
Contributor : Vincent Laur Connect in order to contact the contributor
Submitted on : Monday, June 27, 2022 - 4:57:55 PM
Last modification on : Friday, August 5, 2022 - 2:54:52 PM

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Christophe Vong, Alexis Chevalier, Azar Maalouf, Julien Ville, Jean-François Rosnarho, et al.. Manufacturing of a Magnetic Composite Flexible Filament and Optimization of a 3D Printed Wideband Electromagnetic Multilayer Absorber in X-Ku Frequency Bands. Materials, 2022, 15 (9), pp.3320. ⟨10.3390/ma15093320⟩. ⟨hal-03706515⟩

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