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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2009-10-05
Electromagnetic Source Transformations and Scalarization in Stratified Gyrotropic Media
By
Patrick De Visschere

    Prof. Patrick De Visschere

    ELIS

    Ghent University

    Belgium

    Homepage

Progress In Electromagnetics Research B, Vol. 18, 165-183, 2009
doi:10.2528/PIERB09070904 | Google Scholar

Abstract
It is known that with restrictions on the type of the constitutive equations, Maxwell's equations in non-uniform media can sometimes be reduced to two 2nd order differential equations for 2 scalar quantities only. These results have previously been obtained in two quite different ways, either by a "scalarization of the sources", where the relevant scalar quantities are essentially vector potential components, and the derivation was limited to isotropic media, or alternatively by using the "scalar Hertz potentials", and this method has been applied to more general media. In this paper it is shown that both methods are equivalent for gyrotropic media. We show that the scalarization can be obtained by a combination of transformations between electric and magnetic sources and gauge transformations. It is shown that the method based on the vector potential, which previously used a non-traditional definition of the vector potentials, can also be obtained using the traditional definition provided a proper gauge condition is applied and this method is then extended from isotropic to gyrotropic media. It is shown that the 2 basic scalar Hertz potentials occurring in the second method are invariant under the source scalarization transformations of the first method and therefore are the natural potentials for obtaining scalarization. Finally it is shown that both methods are also equivalent with a much older third method based on Hertz vectors.
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Citation
Patrick De Visschere, "Electromagnetic Source Transformations and Scalarization in Stratified Gyrotropic Media," Progress In Electromagnetics Research B, Vol. 18, 165-183, 2009.
doi:10.2528/PIERB09070904
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