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A broadband planar THz metamaterial absorber.
- Source :
- Modern Physics Letters B; May2015, Vol. 29 Issue 12, p1-9, 9p
- Publication Year :
- 2015
-
Abstract
- We propose the design of a broadband planar metamaterial absorber (MA) at terahertz frequencies. The unit cell of the MA is composed of four dual-band sub-cells with different dimensions in a coplanar. The four dual-band sub-cell structures resonate at several neighboring frequencies. The absorber consists of two metallic layers separated by a dielectric spacer. Simulation results show that the metamaterial absorption at normal incidence is above 90% in the frequency of 6.56-8.10 THz. This design provides an effective way to construct broadband absorber. The multiple-reflection theory was used to explain the absorption mechanism of our investigated structures. The coupling of adjacent four dual-band sub-cells can introduce additional capacitance to affect the performance of absorber. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02179849
- Volume :
- 29
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Modern Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- 102645014
- Full Text :
- https://doi.org/10.1142/S0217984915500566