Generalized Theory of Characteristic Modes

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Generalized Theory of Characteristic Modes. / Ylä-Oijala, Pasi.

In: IEEE Transactions on Antennas and Propagation, Vol. 67, No. 6, 8668452, 01.06.2019, p. 3915-3923.

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@article{0eade914ae06464d863059373ebf868f,
title = "Generalized Theory of Characteristic Modes",
abstract = "The theory of characteristic modes (TCM) is presented for arbitrarily shaped 3-D structures including perfect electric conductors (PECs) and homogeneous penetrable objects. It is shown that by properly expressing the weighting operator of the generalized eigenvalue equation in terms of the integral operators related to the radiated fields, TCM can be formulated directly for the surface integral equation formulation of the problem. This avoids symmetrization or other modifications of the equations. The eigenvalues are shown to be related to radiated, reactive, and dissipated power, and the corresponding far-field patterns are orthogonal. The previously introduced TCM formulations for PEC are special cases of this generalized TCM.",
keywords = "Eigenvalues and eigenfunctions, Integral equations, Symmetric matrices, Conductors, Dielectrics, Antennas, Surface waves, Composite structure, dielectric body, generalized eigenvalue equation, lossy target, perfect electric conductor, surface integral equation, theory of characteristic modes",
author = "Pasi Yl{\"a}-Oijala",
year = "2019",
month = "6",
day = "1",
doi = "10.1109/TAP.2019.2905794",
language = "English",
volume = "67",
pages = "3915--3923",
journal = "IEEE Transactions on Antennas & Propagation",
issn = "0018-926X",
number = "6",

}

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TY - JOUR

T1 - Generalized Theory of Characteristic Modes

AU - Ylä-Oijala, Pasi

PY - 2019/6/1

Y1 - 2019/6/1

N2 - The theory of characteristic modes (TCM) is presented for arbitrarily shaped 3-D structures including perfect electric conductors (PECs) and homogeneous penetrable objects. It is shown that by properly expressing the weighting operator of the generalized eigenvalue equation in terms of the integral operators related to the radiated fields, TCM can be formulated directly for the surface integral equation formulation of the problem. This avoids symmetrization or other modifications of the equations. The eigenvalues are shown to be related to radiated, reactive, and dissipated power, and the corresponding far-field patterns are orthogonal. The previously introduced TCM formulations for PEC are special cases of this generalized TCM.

AB - The theory of characteristic modes (TCM) is presented for arbitrarily shaped 3-D structures including perfect electric conductors (PECs) and homogeneous penetrable objects. It is shown that by properly expressing the weighting operator of the generalized eigenvalue equation in terms of the integral operators related to the radiated fields, TCM can be formulated directly for the surface integral equation formulation of the problem. This avoids symmetrization or other modifications of the equations. The eigenvalues are shown to be related to radiated, reactive, and dissipated power, and the corresponding far-field patterns are orthogonal. The previously introduced TCM formulations for PEC are special cases of this generalized TCM.

KW - Eigenvalues and eigenfunctions

KW - Integral equations

KW - Symmetric matrices

KW - Conductors

KW - Dielectrics

KW - Antennas

KW - Surface waves

KW - Composite structure

KW - dielectric body

KW - generalized eigenvalue equation

KW - lossy target

KW - perfect electric conductor

KW - surface integral equation

KW - theory of characteristic modes

UR - http://www.scopus.com/inward/record.url?scp=85067080829&partnerID=8YFLogxK

U2 - 10.1109/TAP.2019.2905794

DO - 10.1109/TAP.2019.2905794

M3 - Article

VL - 67

SP - 3915

EP - 3923

JO - IEEE Transactions on Antennas & Propagation

JF - IEEE Transactions on Antennas & Propagation

SN - 0018-926X

IS - 6

M1 - 8668452

ER -

ID: 32591107