Cut-Wire Metamaterial Design Based on Simplified Equivalent Circuit Models

Effective equivalent circuits are used for the prediction of resonant and absorbing behavior of cut-wire-based (CW-based) metamaterials. Firstly, an equivalent circuit applicable to electric resonance frequencies of single CW metamaterial arrays is considered. Secondly, the equivalent circuit is ext...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-08, Vol.60 (8), p.3670-3678
Main Authors: Wakatsuchi, H., Paul, J., Greedy, S., Christopoulos, C.
Format: Article
Language:English
Subjects:
Absorbers
Absorption
Applied sciences
Arrays
Asymmetry
Capacitance
Circuits
cut-wire metamaterials
Electronics
Equivalent circuits
Exact sciences and technology
Inductance
Magnetic materials
Magnetic resonance
Materials
Mathematical models
Metamaterials
Peak frequency
resonant frequencies
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Summary:Effective equivalent circuits are used for the prediction of resonant and absorbing behavior of cut-wire-based (CW-based) metamaterials. Firstly, an equivalent circuit applicable to electric resonance frequencies of single CW metamaterial arrays is considered. Secondly, the equivalent circuit is extended for prediction of magnetic resonance frequencies of symmetrically paired CW metamaterial arrays and asymmetrically paired CW metamaterial arrays. Finally, since the magnetic resonance of the symmetrically paired CW arrays is analogous to the resonance of the CW metamaterial absorbers, i.e., absorbing behavior of the absorbers, the absorptance peak frequencies of CW metamaterial absorbers are estimated. Close agreement is obtained with numerically obtained values, the difference being typically 4, 6, 4, and 2% for the single CW, symmetrically paired CW, asymmetrically paired CW metamaterials and CW metamaterial absorbers, respectively. The paper concludes with discussions pointing out differences with a previous equivalent circuit and improvements to the proposed equivalent circuits.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2201109