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arXiv · 1008.2195

Frequency-tunable metamaterials using broadside-coupled split ring resonators

Evren Ekmekci·Andrew C. Strikwerda·Kebin Fan·Xin Zhang·Gonul Turhan-Sayan·Richard D. Averitt
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Abstract

We present frequency tunable metamaterial designs at terahertz (THz) frequencies using broadside-coupled split ring resonator (BC-SRR) arrays. Frequency tuning, arising from changes in near field coupling, is obtained by in-plane horizontal or vertical displacements of the two SRR layers. For electrical excitation, the resonance frequency continuously redshifts as a function of displacement. The maximum frequency shift occurs for displacement of half a unit cell, with vertical displacement resulting in a shift of 663 GHz (51% of f0) and horizontal displacement yielding a shift of 270 GHz (20% of f0). We also discuss the significant differences in tuning that arise for electrical excitation in comparison to magnetic excitation of BC-SRRs.

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Evren Ekmekci, Andrew C. Strikwerda, Kebin Fan, Xin Zhang, Gonul Turhan-Sayan, Richard D. Averitt. 2010-08-12. Frequency-tunable metamaterials using broadside-coupled split ring resonators. https://doi.org/10.1103/physrevb.83.193103

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