Numerical Analysis of Inductive Discontinuities of Finite Thickness in Rectangular Waveguides Using the Modified Residue-Calculus Method

Toshihiko SHIBAZAKI; Teruhiro KINOSHITA; Ryoji SHIN'YAGAITO

Numerical Analysis of Inductive Discontinuities of Finite Thickness in Rectangular Waveguides Using the Modified Residue-Calculus Method

Toshihiko SHIBAZAKI, Teruhiro KINOSHITA, Ryoji SHIN'YAGAITO

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The problem of electromagnetic scattering by inductive discontinuities located in rectangular waveguides, in particular when dealing with discontinuous conductors of finite thickness, is analyzed using the modified residue-calculus method, and form of the equation suitable for a numerical calculation is derived. The incident wave is taken to be the dominant mode, and reflection and transmission properties of an asymmetric inductive iris are discussed. After the modal representation of the filed, the modal matching is apply to satisfy the boundary conditions at the discontinuity. And using the modified residue-calculus method, simultaneous infinite equations, which are concerned with the scattered mode coefficients, are derived. Then they are approximated at the thick diaphragm. The solutions obtained take on the form of an infinite product, and a numerical solution based on the method of successive approximations is presented as a technique for concretely determining the reflection coefficients. As confirmation, experiments are also carried out in the X-band and close agreement is shown between the calculated and experimental values.

Publication: IEICE TRANSACTIONS on Electronics Vol.E77-C No.11 pp.1786-1794

Publication Date: 1994/11/25

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Type of Manuscript: Special Section PAPER (Special Issue on Electromagnetic Theory)

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Toshihiko SHIBAZAKI, Teruhiro KINOSHITA, Ryoji SHIN'YAGAITO, "Numerical Analysis of Inductive Discontinuities of Finite Thickness in Rectangular Waveguides Using the Modified Residue-Calculus Method" in IEICE TRANSACTIONS on Electronics, vol. E77-C, no. 11, pp. 1786-1794, November 1994, doi: .
Abstract: The problem of electromagnetic scattering by inductive discontinuities located in rectangular waveguides, in particular when dealing with discontinuous conductors of finite thickness, is analyzed using the modified residue-calculus method, and form of the equation suitable for a numerical calculation is derived. The incident wave is taken to be the dominant mode, and reflection and transmission properties of an asymmetric inductive iris are discussed. After the modal representation of the filed, the modal matching is apply to satisfy the boundary conditions at the discontinuity. And using the modified residue-calculus method, simultaneous infinite equations, which are concerned with the scattered mode coefficients, are derived. Then they are approximated at the thick diaphragm. The solutions obtained take on the form of an infinite product, and a numerical solution based on the method of successive approximations is presented as a technique for concretely determining the reflection coefficients. As confirmation, experiments are also carried out in the X-band and close agreement is shown between the calculated and experimental values.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e77-c_11_1786/_p

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@ARTICLE{e77-c_11_1786,
author={Toshihiko SHIBAZAKI, Teruhiro KINOSHITA, Ryoji SHIN'YAGAITO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Numerical Analysis of Inductive Discontinuities of Finite Thickness in Rectangular Waveguides Using the Modified Residue-Calculus Method},
year={1994},
volume={E77-C},
number={11},
pages={1786-1794},
abstract={The problem of electromagnetic scattering by inductive discontinuities located in rectangular waveguides, in particular when dealing with discontinuous conductors of finite thickness, is analyzed using the modified residue-calculus method, and form of the equation suitable for a numerical calculation is derived. The incident wave is taken to be the dominant mode, and reflection and transmission properties of an asymmetric inductive iris are discussed. After the modal representation of the filed, the modal matching is apply to satisfy the boundary conditions at the discontinuity. And using the modified residue-calculus method, simultaneous infinite equations, which are concerned with the scattered mode coefficients, are derived. Then they are approximated at the thick diaphragm. The solutions obtained take on the form of an infinite product, and a numerical solution based on the method of successive approximations is presented as a technique for concretely determining the reflection coefficients. As confirmation, experiments are also carried out in the X-band and close agreement is shown between the calculated and experimental values.},
keywords={},
doi={},
ISSN={},
month={November},}

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TY - JOUR
TI - Numerical Analysis of Inductive Discontinuities of Finite Thickness in Rectangular Waveguides Using the Modified Residue-Calculus Method
T2 - IEICE TRANSACTIONS on Electronics
SP - 1786
EP - 1794
AU - Toshihiko SHIBAZAKI
AU - Teruhiro KINOSHITA
AU - Ryoji SHIN'YAGAITO
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E77-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 1994
AB - The problem of electromagnetic scattering by inductive discontinuities located in rectangular waveguides, in particular when dealing with discontinuous conductors of finite thickness, is analyzed using the modified residue-calculus method, and form of the equation suitable for a numerical calculation is derived. The incident wave is taken to be the dominant mode, and reflection and transmission properties of an asymmetric inductive iris are discussed. After the modal representation of the filed, the modal matching is apply to satisfy the boundary conditions at the discontinuity. And using the modified residue-calculus method, simultaneous infinite equations, which are concerned with the scattered mode coefficients, are derived. Then they are approximated at the thick diaphragm. The solutions obtained take on the form of an infinite product, and a numerical solution based on the method of successive approximations is presented as a technique for concretely determining the reflection coefficients. As confirmation, experiments are also carried out in the X-band and close agreement is shown between the calculated and experimental values.
ER -