Performance of Customizable Cut-Wire-Based Metamaterial Absorbers: Absorbing Mechanism and Experimental Demonstration

Performance of customizable cut-wire-based (CW-based) metamaterial absorbers is studied both numerically and experimentally. In the first part of the paper the fundamental absorbing performance of the CW-based metamaterial absorbers is numerically investigated. In this paper two simple geometrical m...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-12, Vol.60 (12), p.5743-5752
Main Authors: Wakatsuchi, H., Paul, J., Christopoulos, C.
Format: Article
Language:English
Subjects:
Absorbers
Absorbing
Absorption
Antennas
Applied classical electromagnetism
Applied sciences
Computer simulation
cut-wire metamaterials
Diffraction, scattering, reflection
Electromagnetic wave propagation, radiowave propagation
Electromagnetism
electron and ion optics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Magnetic materials
Mathematical models
Metals
Metamaterials
Numerical models
Periodic structures
Physics
Product design
Radiocommunications
Radiowave propagation
Resonant frequencies
Shielding
Studies
Substrates
Symmetry
Telecommunications
Telecommunications and information theory
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Summary:Performance of customizable cut-wire-based (CW-based) metamaterial absorbers is studied both numerically and experimentally. In the first part of the paper the fundamental absorbing performance of the CW-based metamaterial absorbers is numerically investigated. In this paper two simple geometrical modifications are proposed to easily enhance the absorbing performance: use of geometrical symmetries and wider CWs. The latter part of the paper shows an experimental demonstration of the CW-based metamaterial absorbers using a metal box lined with metamaterial absorber. The metal box has a resonant frequency which reduces the shielding effectiveness of the metal box but disappears when multiple CW absorbing elements are introduced. The absorbing performance is also confirmed by numerical simulations. The CW-based metamaterial absorbers have several important features, e.g., the simple geometry, both arbitrary enhancement and reduction of the absorbing performance and multiple band operation, which may be useful in satisfying a wide range of wave absorber applications.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2210180