Publications (2)2.24 Total impact

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    ABSTRACT: A general theoretical formulation to analyze inhomogeneously filled waveguides with lossy dielectrics is presented in this paper. The wave equations for the tranverse-field components are written in terms of a nonself-adjoint linear operator and its adjoint. The eigenvectors of this pair of linear operators define a biorthonormal-basis, allowing for a matrix representation of the wave equations in the basis of an auxiliary waveguide. Thus, the problem of solving a system of differential equations is transformed into a linear matrix eigenvalue problem. This formulation is applied to rectangular waveguides loaded with an arbitrary number of dielectric slabs centered at arbitrary points. The comparison with theoretical results available in the literature gives good agreement
    Full-text · Article · May 2000 · IEEE Transactions on Microwave Theory and Techniques
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    ABSTRACT: This paper gives the theoretical basis for the Biorthonormal-Basis method that provides a full-vector description of the modes of a guiding system. The wave equations for the transverse field components are written in terms of a nonself-adjoint linear operator and its adjoint. The eigenvectors of this pair of linear operators define a biorthonormal basis, allowing for a matrix representation of the wave equations in the basis of an auxiliary waveguide. Our proposed technique can be applied both to closed and open guiding systems. Comparisons between our results in some dielectric loaded rectangular waveguides and the available numerical published data fully validate the presented theory. The method is applied to the design and characterization of a photonic crystal microwave waveguide, as well as to a rib waveguide, which are open dielectric guides.
    No preview · Article · Jan 2000