Open AccessBroadband metamaterial absorber based on coupling resistive frequency selective surface
Author(s) -
Lei Sun,
Haifeng Cheng,
YongWu Zhou,
Jun Wang
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.004675
Subject(s) - optics , metamaterial , broadband , materials science , ground plane , metamaterial absorber , tunable metamaterials , resistive touchscreen , bandwidth (computing) , fractal , physics , telecommunications , mathematical analysis , electrical engineering , mathematics , computer science , antenna (radio) , engineering
We report the design, fabrication, and measurement of a broadband metamaterial absorber, which consists of lossy frequency selective surface (FSS) and a metallic ground plane separated by a dielectric layer. The compact single unit cell of the FSS contains crisscross and fractal square patch which couple with each other. Both qualitative analysis by equivalent circuit and accurate numeric calculation show that the coupling between the crisscross and the fractal square patch can enhance the bandwidth with the reflectivity below -10dB in the frequency range of 2-18GHz by producing a third absorption null. In the end, the designed absorber was realized by experiment.