Theory of Gyroelectric Waveguides

Liu, S.; Li, L. W.; Leong, Mook‐Seng; Yeo, Tat‐Soon

doi:10.2528/pier00041801

Cited by 20 publications

(26 citation statements)

References 31 publications

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“…The theory of excitation of closed waveguides filled with gyrotropic media has received much careful study, and there are many accounts of it (see, e.g., [1,2] and references therein). Open gyrotropic waveguides surrounded by an isotropic outer medium have been discussed in [3].…”

Section: Eigenfunction Expansions Of Source-excited Electromagnetic Fmentioning

confidence: 99%

“…where R (1) m,α and R (2) m,α are certain constants. It can be shown that the total field yielded by summing (integrating) eigenwaves over the found values of q satisfies the radiation condition at infinity (r = (ρ 2 + z 2 ) 1/2 → ∞).…”

Section: Formulation Of the Problem And Basic Equationsmentioning

confidence: 99%

“…andq (1) α andq (2) α are the transverse wave numbers in the inner region, which correspond to the axial wave number p α (q):…”

Section: Discrete-and Continuous-spectrum Modesmentioning

confidence: 99%

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Eigenfunction expansions of source-excited electromagnetic fields in cylindrically stratified unbounded gyrotropic media

Kudrin¹,

Petrov²,

Zaboronkova³

2006

DAYS on DIFFRACTION 2006

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We consider electromagnetic fields excited by spatially bounded, arbitrary given sources in the presence of a cylindrical guiding structure immersed in an infinitely extended homogeneous gyrotropic background 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 the vector modal solutions of source-free Maxwell's equations. By demanding completeness of the modal spectrum and using a continuity argument, 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.

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Section: Eigenfunction Expansions Of Source-excited Electromagnetic Fmentioning

confidence: 99%

Section: Formulation Of the Problem And Basic Equationsmentioning

confidence: 99%

See 1 more Smart Citation

Eigenfunction expansions of source-excited electromagnetic fields in cylindrically stratified unbounded gyrotropic media

Kudrin¹,

Petrov²,

Zaboronkova³

2006

DAYS on DIFFRACTION 2006

View full text Add to dashboard Cite

show abstract

“…The theory of excitation of closed waveguides filled with gyrotropic media has received much careful study, and there are many accounts of it (see, e.g., [11][12][13] and references therein). Open gyrotropic waveguides surrounded by an isotropic outer medium have been discussed in [10,[14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Radiation From Sources Embedded in a Cylindrically Stratified Unbounded Gyrotropic Medium

Kudrin¹,

Petrov²,

Kyriacou³

et al. 2009

PIER B

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Abstract-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 discreteand 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 developed approach makes it possible to readily represent the sourceexcited field without preliminary calculation of the dyadic Green's functions, which significantly facilitates the field evaluation.

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“…The electrodynamical models of waveguide with plasma and without external dielectric layer were used [26,27]. Liu et al analysed circular conducting waveguides, filled with the gyroelectric material, using dyadic Green's functions [28]. However the attenuation of the electromagnetic wave were not analysed in these papers.…”

Section: Introductionmentioning

confidence: 99%

Investigation of New Algorithms for Estimation of Losses in Microwave Devices Based on a Waveguide or a Meander Line

et al. 2016

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The aim of this paper was to introduce the estimation of the losses in the prototypes of the microwave devices. We proposed in this paper two algorithms: an algorithm for evaluation of losses in the microwave devices based on a waveguide and an algorithm for evaluation of losses in the microwave devices based on a meander line. In order to verify the results of losses evaluation for the waveguide-based device, we have used the electrodynamic model of the open cylindrical gyrotropic waveguide with one anisotropic dielectric layer and the electrodynamic model of the open cylindrical gyrotropic waveguide with two dielectric layers. In order to verify the results of losses evaluation for the meander line-based device, we have used the model of the meander line with asymmetrical periodical inhomogeneity. The comparison of the losses evaluation results received by the algorithms proposed in this paper and the results received by application of the commercial software together with the alternative methods confirmed that the proposed algorithms produced correct results.

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Theory of Gyroelectric Waveguides

Abstract: Circular conducting waveguides filled with gyroelectric media are studied in this paper and the dyadic Green's functions in these

Cited by 20 publications

References 31 publications

Eigenfunction expansions of source-excited electromagnetic fields in cylindrically stratified unbounded gyrotropic media

Eigenfunction expansions of source-excited electromagnetic fields in cylindrically stratified unbounded gyrotropic media

Electromagnetic Radiation From Sources Embedded in a Cylindrically Stratified Unbounded Gyrotropic Medium

Investigation of New Algorithms for Estimation of Losses in Microwave Devices Based on a Waveguide or a Meander Line

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