title: Multi-band metamaterial absorber based on the arrangement of donut-type resonators.
abstract: We propose multi-band metamaterial absorbers at microwave frequencies. The design, the analysis, the fabrication, and the measurement of the absorbers working in multiple bands are presented. The numerical simulations and the experiments in the microwave anechoic chamber were performed. The metamaterial absorbers consist of an delicate arrangement of donut-shape resonators with different sizes and a metallic background plane, separated by a dielectric. The near-perfect absorptions of dual, triple and quad peaks are persistent with polarization independence, and the effect of angle of incidence for both TE and TM modes was also elucidated. It was also found that the multiple-reflection theory was not suitable for explaining the absorption mechanism of our investigated structures. The results of this study are promising for the practical applications.
authors.affiliation: Department of Physics, q-Psi and RINS, Hanyang University, Seoul, South Korea.
authors.forename: Jin Woo
authors.initials: JW
authors.lastname: Park
authors.forename: Pham Van
authors.initials: PV
authors.lastname: Tuong
authors.forename: Joo Yull
authors.initials: JY
authors.lastname: Rhee
authors.forename: Ki Won
authors.initials: KW
authors.lastname: Kim
authors.forename: Won Ho
authors.initials: WH
authors.lastname: Jang
authors.forename: Eun Ha
authors.initials: EH
authors.lastname: Choi
authors.forename: Liang Yao
authors.initials: LY
authors.lastname: Chen
authors.forename: YoungPak
authors.initials: Y
authors.lastname: Lee
mesh_terms: D000042:Absorption; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008420:Manufactured Materials; D008872:Microwaves; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*