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Journal of Electromagnetic Waves and Applications Volume 27, 2013 - Issue 3
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Articles

Tunable triple-band negative permeability metamaterial consisting of single-loop resonators and ferrite

J. ZhongKey Laboratory of Broadband Optical Fiber Transmission and Communication Networks, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
,
F. WangDepartment of Communication, Chengdu Technological University, Chengdu, 611730, China
,
G. WenKey Laboratory of Broadband Optical Fiber Transmission and Communication Networks, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
,
Y. HuangKey Laboratory of Broadband Optical Fiber Transmission and Communication Networks, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
,
J. LiKey Laboratory of Broadband Optical Fiber Transmission and Communication Networks, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
,
W. ZhuAdvanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria, 3800, Australia
&
H. SunKey Laboratory of Broadband Optical Fiber Transmission and Communication Networks, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
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Pages 267-275 | Received 15 Sep 2012, Accepted 08 Oct 2012, Published online: 08 Nov 2012
 
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Abstract

We numerically propose a novel tunable metamaterial with triple bands of negative permeabilities. This metamaterial is composed of an array of single-loop resonators (SLRs) and ferrite slabs, where the SLRs provide two magnetic resonances while the ferrite slabs under an applied dc magnetic bias give rise to the third magnetic resonance. By adjusting the intensity of the dc magnetic bias, it is able to tune all the three magnetic resonances. The -negative features of these resonant bands are investigated by retrieving the constitutive parameters from simulated -parameters. The results in this paper open a new approach for designing tunable multiband metamaterials, which is sure to find extensive applications in fields such as tunable multiband notched ultra-wideband (UWB) antennas, tunable multiband perfect lens, and tunable multiband absorbers.

Acknowledgments

This work was partially supported by Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20110185110014) and the Fundamental Research Funds for the Central Universities (Grant No. E022050205). W. Zhu also gratefully acknowledges the Australian Research Council for financial support within the frame of the Discovery Grant scheme under grant DP110100713.

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