Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Analysis of Magnetic Permeability Spectra of Metamaterials Composed of Cut Wire Pairs by Circuit Theory

  • Lim, Jun-Hee (Department of Advanced Materials Engineering, Chungbuk National University) ;
  • Kim, Sung-Soo (Department of Advanced Materials Engineering, Chungbuk National University)
  • Received : 2016.03.26
  • Accepted : 2016.04.26
  • Published : 2016.06.30
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Abstract

Retrieving the equivalent electromagnetic parameters (permittivity and permeability) plays an important role in the research and application of metamaterials. Frequency dispersion of magnetic permeability has been theoretically predicted in a metamaterial composed of cut wire pairs (CWP) separated by dielectric substrate on the basis of circuit theory. Magnetic resonance resulting from antiparallel currents between the CWP is observed at the frequency of minimum reflection loss (corresponding to absorption peak) and effective resonator size can be determined. Having calculated the circuit parameters (inductance L, capacitance C) and resonance frequency from CWP dimension, the frequency dispersion of permeability of Lorentz like magnetic response can be predicted. The simulated resonance frequency and permeability spectra can be explained well on the basis of the circuit theory of an RLC resonator.

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References

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