Absorbant micro-ondes à metamatériaux ultra large bande et large incidence
| Autor: | Anne Claire Lepage, André Barka, Xavier Begaud, Stefan Varault, M. Soiron |
|---|---|
| Přispěvatelé: | Radio-Fréquences Microondes et Ondes Millimétriques (RFM2), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris-Institut Mines-Télécom [Paris] (IMT)-Télécom Paris, Département Communications & Electronique (COMELEC), Télécom ParisTech, SART, ONERA / DEMR, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse, ANR-12-ASTR-0009,SAFAS,Structure Autocomplémentaire à FAible Signature(2012) |
| Rok vydání: | 2018 |
| Předmět: |
ABSORBANTS D'ONDES ÉLECTROMAGNÉTIQUES BASÉS SUR DES SURFACES MULTI-COUCHES
Materials science electromagnetic wave absorbers based on multilayer structures self-complementary structures Impedance matching Ultra-wideband 02 engineering and technology Dielectric anti-phase metasurface lcsh:Technology Article Optics 0202 electrical engineering electronic engineering information engineering General Materials Science ABSORBANT ULTRA LARGE BANDE Reflection coefficient Wideband lcsh:Microscopy ultra-wideband microwave absorber frequency selective surface lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T business.industry Bandwidth (signal processing) wide-angle metamaterial absorber ABSORBANT MÉTA-MATÉRIAUX wide-angle impedance matching layers 020206 networking & telecommunications SURFACES MÉTA-MATÉRIAUX 021001 nanoscience & nanotechnology metamaterial absorber [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism metasurface lcsh:TA1-2040 Metamaterial absorber lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering SURFACE SÉLECTIVE EN FRÉQUENCE ABSORBANT MULTI INCIDENCES lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology business lcsh:TK1-9971 Microwave |
| Zdroj: | Materials Volume 11 Issue 10 Materials, MDPI, 2018, Special Issue Electromagnetic Wave Absorbing Structures, 11 (2045), pp.1-9. ⟨10.3390/ma11102045⟩ Materials, Vol 11, Iss 10, p 2045 (2018) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma11102045 |
| Popis: | In order to extend the performance of radar absorbing materials, it is necessary to design new structures with wideband properties and large angles of incidence which are also as thin as possible. The objective of this work, realized within the framework of the SAFAS project (self-complementary surface with low signature) is, then, the development of an ultra-wideband microwave absorber of low thickness. The design of such material requires a multilayered structure composed with dielectric layers, metasurfaces, and wide-angle impedance matching layers. This solution has been realized with on-the-shelf materials, and measured to validate the concept. At normal incidence, the bandwidth ratio, defined for a magnitude of the reflection coefficient below &minus 10 dB, is 4.7:1 for an absorber with a total thickness of 11.5 mm, which corresponds to &lambda /7 at the lowest operating frequency. For an incidence of 60° this bandwidth ratio is reduced to 3.8:1, but the device remains ultra-wideband. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|