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. 2014 Jul 2;7(7):4994–5011. doi: 10.3390/ma7074994

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© 2014 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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(a) The magnitude of the transmission parameter (S₂₁) in units of dB for the 2 × 2 unit cell; (b) the real value of permeability vs. the frequency for the 2 × 2 unit cell.