Polarization-independent tunable reflector

Author

Tianwei Deng ; Peng Khiang Tan ; Ruifeng Huang

Author_Institution

Temasek Labs., Nat. Univ. of Singapore (NUS), Singapore, Singapore

fYear

2014

fDate

13-16 July 2014

Firstpage

1

Lastpage

2

Abstract

In this paper, a novel tunable reflector with gain medium was designed, fabricated and measured. By incorporating active elements into two magnetic metamaterial SRRs, gain medium with positive loss, perfect losslessness and even negative loss can be tuned to switch the function of the active reflector among a perfect absorber, a perfect reflector and a gain reflector. The reflectivity of the tunable reflector can be tuned from -20dB to +15dB via three DC control channels. By introducing two more SRRs in one unit cell, polarization-independent function could be realized.

Keywords

electromagnetic metamaterials; electromagnetic wave absorption; electromagnetic wave polarisation; electromagnetic wave reflection; DC control channels; SRR; active elements; active reflector; gain reflector; magnetic metamaterial; perfect absorber; perfect reflector; polarization-independent tunable reflector; split resonance rings; Magnetic materials; Magnetic resonance imaging; Metamaterials; Radar; Reflectivity; Switches; TEM cells; active magnetic metamaterials; gain medium; tunable reflector;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology and Applied Electromagnetics (ANTEM), 2014 16th International Symposium on

Conference_Location

Victoria, BC

Type

conf

DOI

10.1109/ANTEM.2014.6887722

Filename

6887722