Open AccessELECTROMAGNETIC RADIATION FROM SOURCES EMBEDDED IN A CYLINDRICALLY STRATIFIED UNBOUNDED GYROTROPIC MEDIUM
Author(s) -
Alexander V. Kudrin,
E. Yu. Petrov,
George A. Kyriacou,
T. M. Zaboronkova
Publication year - 2009
Publication title -
progress in electromagnetics research b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.208
H-Index - 47
ISSN - 1937-6472
DOI - 10.2528/pierb08120503
Subject(s) - physics , eigenfunction , electromagnetic field , bounded function , electromagnetic radiation , modal , classical mechanics , continuous spectrum , mathematical analysis , maxwell's equations , optics , eigenvalues and eigenvectors , quantum mechanics , mathematics , chemistry , polymer chemistry
A study is made of the excitation of electromagnetic waves by spatially bounded, arbitrary sources in the presence of a cylindrical guiding structure immersed in an infinitely extended, homogeneous gyrotropic medium whose permittivity and permeability are both describable by tensors with nonzero off-diagonal elements. The axis of symmetry of the considered cylindrical structure is assumed to coincide with the gyrotropic axis. The total field is sought in terms of vector modal solutions of the source-free Maxwell equations. We determine the content of the modal spectrum and obtain an eigenfunction expansion of the source-excited field in terms of discrete- and continuous-spectrum modes. The expansion coefficients of the modes are derived in explicit form. An expression for the total power radiated from sources is deduced and analyzed. It is shown that the
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