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Advances in OptoElectronics
Volume 2013, Article ID 269170, 7 pages
http://dx.doi.org/10.1155/2013/269170
Research Article

Multiband Negative Permittivity Metamaterials and Absorbers

Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks, Ministry of Education, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

Received 30 March 2013; Revised 4 July 2013; Accepted 10 July 2013

Academic Editor: Armin Gerhard Aberle

Copyright © 2013 Yiran Tian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Design and characteristics of multiband negative permittivity metamaterial and its absorber configuration are presented in this paper. The proposed multiband metamaterial is composed of a novel multibranch resonator which can possess four electric resonance frequencies. It is shown that, by controlling the length of the main branches of such resonator, the resonant frequencies and corresponding absorbing bands of metamaterial absorber can be shifted in a large frequency band.