Verification of impedance matching at the surface of left-handed materials
Author
Aydın, Koray
Bulu, İrfan
Özbay, Ekmel
Date
2006Source Title
Microwave and Optical Technology Letters
Print ISSN
0895-2477
Publisher
Wiley
Volume
48
Issue
12
Pages
2548 - 2552
Language
English
Type
ArticleItem Usage Stats
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Abstract
Impedance matching at the surface of left-handed materials (LHM) is required for certain applications including a perfect lens. In this study, we present the experimental and theoretical verification of an impedance-matched LHM to free space. Reflection characteristics of both one-dimensional and two-dimensional LHM were investigated. The reflection was observed to be very low at a narrow frequency range. FDTD simulations and retrieval procedures were used to theoretically verify impedance matching. By varying the number of layers along the propagation direction, the ultralow reflection at specific frequencies was shown to be independent of the sample thickness. © 2006 Wiley Periodicals, Inc.
Keywords
Impedance matchingLeft-handed materials
Metamaterials
Perfect lens
Reflection
Computer simulation
Electromagnetic wave reflection
Finite difference method
Lenses
Natural frequencies
Time domain analysis
Wave propagation
FDTD simulations