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Theoretical considerations for finding anisotropic permittivity in layered ferroelectric/ferromagnetic structures from full‐wave electromagnetic simulations *
Author(s) -
Krowne Clifford M.
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/1098-2760(20010105)28:1<63::aid-mop18>3.0.co;2-q
Subject(s) - permittivity , ferroelectricity , physics , anisotropy , propagation constant , mathematical analysis , condensed matter physics , dielectric , materials science , optics , mathematics , quantum mechanics
A full‐wave integral‐equation Green's function code in the spectral domain has been implemented using the finite Fourier transform consistent with complex media layered structures modeled in a cross‐sectional region. The basis function set describing the strip currents or slot fields at the interface is able to handle asymmetric field distribution due to the intrinsic asymmetry caused by the material tensors. Theoretical issues related to determining the permittivity or permeability tensors from the propagation constant are covered in mathematical generality for rotated systems or arbitrary bias field orientations. A dispersion diagram for static electric‐field‐induced anisotropy in a ferroelectric loaded multilayered microstrip structure is provided, and a multistep computational process of de‐embedding the permittivity from the propagation constant values is demonstrated. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 63–69, 2001.