Experimental Demonstration of Negative-Index Propagation in a Rectangular Waveguide Loaded With Complementary Split-Ring Resonators

In a recent paper, we studied a metamaterial consisting of stacked metal plates loaded by embedded complementary split-ring resonators (C-SRRs), ideal to support negative-index propagation and reversed Cherenkov radiation. Here, we experimentally verify negative-index propagation in a related struct...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2015, Vol.14, p.119-122
Main Authors: Estep, N. A., Askarpour, A. N., Alu, A.
Format: Article
Language:English
Subjects:
Complementary split-ring resonators
Dispersion
Load modeling
Loaded waveguides
Metamaterials
negative index
Nickel
Probes
transmission lines
waveguides
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Summary:In a recent paper, we studied a metamaterial consisting of stacked metal plates loaded by embedded complementary split-ring resonators (C-SRRs), ideal to support negative-index propagation and reversed Cherenkov radiation. Here, we experimentally verify negative-index propagation in a related structure, a conventional X-band waveguide loaded with a single column of C-SRRs, emulating a unit cell of an effective bulk negative-index metamaterial. Measurements and supporting simulations reveal a passband between 4.2 and 4.6 GHz, with a phase response typical of negative-index propagation.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2014.2356558