FDTD modeling of transient microwave signals in dispersive and lossy bi-isotropic media |
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Authors: | Grande A Barba I Cabeceira ACL Represa J So PPM Hoefer WJR |
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Affiliation: | Dept. de Electr. y Electron., Univ. de Valladolid, Spain; |
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Abstract: | In this paper, we present a novel finite-difference time-domain model of transient wave propagation in general dispersive bi-isotropic media with losses. The special properties of these materials may lead to new applications in microwave and millimeter-wave technology. While their frequency-domain properties have been well described in the literature, their time-domain behavior has only been modeled thus far for special sub-classes and monochromatic time dependence. We have validated our method by first computing time-harmonic wave propagation through a bi-isotropic medium and comparing it with analytical results. Agreement is typically better than 1%. We have then computed transient field propagation in a general lossy dispersive bi-isotropic medium. |
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