Bandwidth enhanced metamaterial absorber at terahertz frequency

Author

Huan Zhang ; Yijun Feng

Author_Institution

Dept. of Electron. Eng., Nanjing Univ., Nanjing, China

fYear

2012

fDate

8-10 Oct. 2012

Firstpage

1

Lastpage

4

Abstract

In this paper a metamaterial electromagnetic (EM) wave absorber with unit cell composed of four circular metallic plates is reported, which can absorbing EM energy at terahertz (THz) frequency with enhanced bandwidth. By properly designing the size of the four plates, the relative bandwidth is increased to 41.3% due to the multi-resonance effect. The performance of the absorber is demonstrated by full-wave simulation and experimentally verified by reflection measurement with a THz time-domain spectroscopy. The measurement also indicates the designed THz absorber is polarization insensitive and works with wide incidence angles.

Keywords

electromagnetic wave absorption; electromagnetic wave polarisation; electromagnetic wave reflection; terahertz metamaterials; EM; EM energy absorption; THz time-domain spectroscopy; bandwidth enhanced metamaterial electromagnetic wave absorber; circular metallic plate; full-wave simulation; multiresonance effect; reflection measurement; terahertz frequency; wide incidence angle; Bandwidth; Fabrication; Frequency measurement; Metals; Metamaterials; Reflection; Reflectivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Metamaterials (Meta), 2012 International Workshop on

Conference_Location

Nanjing

Print_ISBN

978-1-4673-2807-4

Type

conf

DOI

10.1109/META.2012.6464931

Filename

6464931