Volume 84, Number 3, November 2008
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||20 October 2008|
Causality in the resonance behavior of metamaterials
National Laboratory of Antennas and Microwave Technology, Xidian University - Xi'an 710071, China
Corresponding author: email@example.com
Accepted: 22 September 2008
A rigorous full wave analysis of bianisotropic split ring resonator (SRR) metamaterials is presented for different electromagnetic field polarization and propagation directions. An alternative physical explanation for SRR resonance band gaps is gained by revealing the fact that an imaginary wave number leads to the SRR resonance. The field distribution over SRRs is then expanded into Floquet modes for further examination. As is shown, the metamaterial resonance is engendered by the evanescent modes which accords with the full wave analysis.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 61.05.-a – Techniques for structure determination / 71.15.-m – Methods of electronic structure calculations
© EPLA, 2008
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