Left-handed electromagnetic properties of split-ring resonator and wire loaded transmission line in a fin-line technology

We report on experiments carried out on a backward transmission line, which consists of a fin-line periodically loaded by split-ring resonators and shunt wires. We first demonstrate the left-handed character of these frequency-selective transmission lines via: 1) dispersion diagram calculations whic...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2006-04, Vol.54 (4), p.1451-1457
Main Authors: Decoopman, T., Marteau, A., Lheurette, E., Vanbesien, O., Lippens, D.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Dispersion
Dispersions
Electric, optical and optoelectronic circuits
Electromagnetic measurements
Electronic circuits
Electronics
Exact sciences and technology
Fin line
Finline
Frequency dependence
Frequency measurement
left-handed (LH) materials
Length measurement
Materials
Mathematical analysis
metamaterials
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
Oscillators, resonators, synthetizers
Phase measurement
Refraction
Resonators
Tracking
Transmission line measurements
Transmission lines
Wire
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Summary:We report on experiments carried out on a backward transmission line, which consists of a fin-line periodically loaded by split-ring resonators and shunt wires. We first demonstrate the left-handed character of these frequency-selective transmission lines via: 1) dispersion diagram calculations which have been compared to the frequency dependence of measured scattering parameters; 2) the tracking of the phase fronts; and 3) the phase offset between two lines of various lengths. The effective refraction index found experimentally was approximately -4. Taking benefit of the use of a closed electromagnetic system and successful matching, the losses are especially analyzed. The ratio between incident and absorbed energy is 65% for a three-cell prototype and reaches 91% for ten cells.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2006.871356