Send to

Choose Destination
Sci Rep. 2018 Aug 2;8(1):11632. doi: 10.1038/s41598-018-29896-4.

Ultra-subwavelength thickness for dual/triple-band metamaterial absorber at very low frequency.

Author information

Department of Physics and RINS, Hanyang University, Seoul, Korea.
Department of Display Information, Sunmoon University, Asan, Korea.
Department of Physics, Sungkyunkwan University, Suwon, Korea.
Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
Infovion Co., Seoul, Korea.
Department of Physics and RINS, Hanyang University, Seoul, Korea.


An integrated model utilizing external parasitic capacitors for a dual-band metamaterial perfect absorber (DMPA) is proposed and demonstrated in the UHF radio band. By adjusting the lumped capacitors on a simple meta-surface, the thickness of absorber is reduced to be only 1/378 and 1/320 with respect to the operating wavelength at 305 and 360.5 MHz, respectively. The simulations and the experiments confirm that the DMPA can maintain an absorption over 91% in a wide range of incident angle (up to 55°) and independent of the polarization of incident radiation. Additionally, we examine the integrated model for smaller dual-band absorber and absorption performance at higher frequencies (LTE band). Finally, we consolidate our approach by fabricating an ultrathin triple-band perfect absorber miniaturized to be only 1/591 of the longest operating wavelength. Our work is expected to contribute to the actualization of metamaterial-based devices working at radio frequency.

Supplemental Content

Full text links

Icon for Nature Publishing Group Icon for PubMed Central
Loading ...
Support Center