Experimental observation of true left-handed transmission, negative refraction and negative phase velocity in composite metamaterials
Author
Özbay, Ekmel
Soukoulis, C. M.
Date
2005Source Title
2006 European Microwave Conference
Publisher
IEEE
Pages
555 - 558
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
We report a true left-handed (LH) behavior in a composite metamaterial consisting of periodically arranged split ring resonator (SRR) and wire structures. The magnetic resonance of the SRR structure is demonstrated by comparing the transmission spectra of SRRs with that of closed SRRs. We confirmed experimentally that the effective plasma frequency of the LH material composed of SRRs and wires is lower than the plasma frequency of the wires. A well-defined left-handed transmission band with a peak value of -1.2 dB (-0.3 dB/cm) is obtained. We also report the negative refraction characteristics of a 2D composite metamaterial (CMM) structure in free space. The experimental results agree extremely well with the theoretical calculations.
Keywords
Composite metamaterialsExperimental observation
Left-handed transmission bands
Negative phase velocity
Negative refractions
Split-ring resonators (SRR)
Theoretical calculations
Transmission spectrums
Electromagnetism
Light refraction
Magnetic resonance
Metamaterials
Plasma waves
Wire
Ring gages