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Extension of Berenger's PML boundary condition in matching lossy medium and evanescent waves

Extension of Berenger's PML boundary condition in matching lossy medium and evanescent waves

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The authors have found that the generalised perfectly matched layer can be derived using wave impedance and effective permittivity concepts. This approach uses a trapezoidal integration scheme which leads to significantly better performance in matching propagating waves and a slight improvement in absorption of evanescent waves, in a lossy medium.

References

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      • Absorbing boundary conditions for the finite-difference approximationof the time-domain electromagnetic-field equations
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      • Wu, Z., Fang, J.: `Performance of the perfectly matched layer in modeling wave propagationin microwave and digital circuit interconnects', 11th Annual Review of Progress in AppliedComputational Electromagnetics, March 1995, 1, Monterey, CA, p. 504–511
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      • Gribbons, M., Lee, S.-K., Cangellaris, A.C.: `Modification of Berenger's perfectly matchedlayer for the absorption of electromagnetics waves in layered media', 11th Annual Reviewof Progress in Applied Computational Electromagnetics, March 1995, 1, Monterey, CA, p. 498–503
    6. 6)
      • Generalized perfectly matched layer — An extension of Berenger'sperfectlymatched layer boundary condition
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