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Low‐cost and miniaturized metamaterial absorber using 3D printed swastika symbol
Author(s) -
Kim Minseok,
Jeong Heijun,
Lim Daecheon,
Ghosh Saptarshi,
Lim Sungjoon
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32221
Subject(s) - molar absorptivity , metamaterial , miniaturization , materials science , stacking , lamination , footprint , optoelectronics , optics , metamaterial absorber , tunable metamaterials , layer (electronics) , physics , nanotechnology , paleontology , biology , nuclear magnetic resonance
In this paper, a low‐cost metamaterial (MM) absorber is proposed using 3‐dimensional (3D) printing technology. The unit cell of the proposed MM absorber is motivated from a swastika symbol to minimize the footprint size. For further miniaturization, the unit cell is 3D printed by stacking two blocks. The conductive top patterns are realized by painting with a silver ink. The proposed MM absorber consists of 2 × 4 unit cell array which is loaded in the rectangular waveguide. Its absorptivity is simulated and measured to demonstrate the performance. The simulated and measured absorptivity at 1.91 GHz are 99% and 92%, respectively.
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