Título: | ELECTROMAGNETIC CHARACTERIZATION OF INHOMOGENEOUS CYLINDRICAL WAVEGUIDES USING MODE-MATCHING-BASED METHODS | ||||||||||||
Autor: |
VIVIAN BARREIROS COSENZA |
||||||||||||
Colaborador(es): |
GUILHERME SIMON DA ROSA - Orientador |
||||||||||||
Catalogação: | 29/SET/2020 | Língua(s): | ENGLISH - UNITED STATES |
||||||||||
Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
||||||||||||
Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=49660&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=49660&idi=2 |
||||||||||||
DOI: | https://doi.org/10.17771/PUCRio.acad.49660 | ||||||||||||
Resumo: | |||||||||||||
Many devices and structures used to guide electromagnetic waves are
conformal with the cylindrical coordinates. Sensitive applications of microwave
engineering and integrated optical devices often use non-homogeneous,
anisotropic and dissipative materials, so that the research for robust
and accurate computational models is a topic of remarkable interest for
Electrical Engineering. This work presents a semi-analytical technique for
solving boundary-value problems associated with cylindrical, anisotropic,
and non-homogeneous waveguides. Our methodology allows us to model
structures with radial layers, with uniaxial anisotropy, and with losses.
The proposed solution starts from Maxwell s equations for time-harmonic
electromagnetic fields and employs a modal expansion in terms of the
Bessel-Fourier series. The eigenvalues associated with the problem are
obtained using the winding number method, in which several approaches for
calculating complex-plane contour integrals are explored in detail. In order
to properly analyze the junctions between sections of stratified waveguides,
we employ a mode-matching technique based on the conservation of the
Reaction of the fields. Our formulation can handle the effects of excitation
and coupling between pure modes (TM, TE, and TEM) in homogeneous
waveguides, as well as hybrid modes in complex structures. A series of
numerical results are presented and show the capacity of the methodology
developed here to correctly characterize cylindrical structures composed of
complex media (inhomogeneous, anisotropic, and dissipative) in a robust
and computationally-efficient fashion if compared to other conventional
computational electromagnetic techniques.
|
|||||||||||||
|