Thin microwave absorber based on Laser-Induced Graphene Frequency Selective Surfaces
Identificadores
URI: https://hdl.handle.net/10481/89422Metadata
Show full item recordAuthor
Houeix, Yann; Romero Maldonado, Francisco Javier; García Ruiz, Francisco Javier; Morales Santos, Diego Pedro; Rodríguez Santiago, Noel; Kaddour, DarineEditorial
IEEE
Materia
Frequency Selective Surface Laser-induced graphene Microwave absorber Thin-film electronics
Date
2024-02-21Referencia bibliográfica
Published version: Houeix, Yann et al. Thin microwave absorber based on Laser-Induced Graphene Frequency Selective Surfaces. Journal of Radio Frequency Identification
Sponsorship
MCIN/AEI/10.13039/501100011033 PID2020-117344RB-I00, TED2021-129949A-I00; FEDER/Junta de Andalucía P20_00265, BRNM-680-UGR20; European Union NextGenerationEU/PRTR; Junta de Andalucía ProyExcel-00268; Spanish Ministry of Sciences and Innovation PRE2021-096886Abstract
This study presents a pioneering approach to fabricating single-layer Frequency Selective Surfaces (FSS) using Laser-Induced Graphene (LIG). The FSS structure proposed consists of periodic resistive patterns of LIG synthesized through a one-step laser photothermal process directly on the surface of a thin polyimide substrate. The structural and electrical properties of LIG were thoroughly investigated to develop an electrical model aiming at optimizing the design and absorbing properties. After that, a 12 mm thick LIG-FSS microwave absorber prototype was fabricated and tested under real conditions, demonstrating over 90% absorption in the frequency band from 1.69 to 2.91 GHz with a thickness of only 0.068 times the maximum wavelength (λmax), demonstrating good agreement with the simulations and theoretical results. Additionally, we discuss the tunability of the frequency response of the absorber by adjusting accordingly the induced material’s properties. Finally, we also demonstrate the versatility of this approach for the fabrication of FSS structures based on alternative patterns. The findings presented in this work highlight the promising potential of sustainable microwave absorbers based on LIG-FSS structures.