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Surface wave transmission line theory for single and many wire systems

Examining cables using the many conductor transmission line theory has shed light on the modes supported by various cable types. However, so far, the theory disregards the fundamental surface wave mode whose lateral confinement increases with frequency and hence is expected to play an important role...

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Detalles Bibliográficos
Autores principales: Schaich, Tobias, Molnar, Daniel, Rawi, Anas Al, Payne, Mike
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:https://dx.doi.org/10.1063/5.0059393
http://cds.cern.ch/record/2853281
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author Schaich, Tobias
Molnar, Daniel
Rawi, Anas Al
Payne, Mike
author_facet Schaich, Tobias
Molnar, Daniel
Rawi, Anas Al
Payne, Mike
author_sort Schaich, Tobias
collection CERN
description Examining cables using the many conductor transmission line theory has shed light on the modes supported by various cable types. However, so far, the theory disregards the fundamental surface wave mode whose lateral confinement increases with frequency and hence is expected to play an important role in high-frequency applications. To address this issue, we propose an extension to the theory that incorporates surface waves on uncoated, cylindrical wires. Crucially, this requires new definitions of the per unit length transmission line parameters, which are derived using the single wire surface wave solution. By closely examining a two-wire and a three-wire system, we show that these new parameters can predict surface waves as well as modes found using conventional many conductor transmission line theory. Furthermore, all calculated modes are validated experimentally by diagonalization of a measured coupling matrix. Additionally, the propagation constants for the modes predicted by the model are validated against full numerical simulations. Good agreement is observed when proximity effects can be neglected.
id cern-2853281
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-28532812023-05-04T14:22:51Zdoi:10.1063/5.0059393http://cds.cern.ch/record/2853281engSchaich, TobiasMolnar, DanielRawi, Anas AlPayne, MikeSurface wave transmission line theory for single and many wire systemsEngineeringExamining cables using the many conductor transmission line theory has shed light on the modes supported by various cable types. However, so far, the theory disregards the fundamental surface wave mode whose lateral confinement increases with frequency and hence is expected to play an important role in high-frequency applications. To address this issue, we propose an extension to the theory that incorporates surface waves on uncoated, cylindrical wires. Crucially, this requires new definitions of the per unit length transmission line parameters, which are derived using the single wire surface wave solution. By closely examining a two-wire and a three-wire system, we show that these new parameters can predict surface waves as well as modes found using conventional many conductor transmission line theory. Furthermore, all calculated modes are validated experimentally by diagonalization of a measured coupling matrix. Additionally, the propagation constants for the modes predicted by the model are validated against full numerical simulations. Good agreement is observed when proximity effects can be neglected.oai:cds.cern.ch:28532812021
spellingShingle Engineering
Schaich, Tobias
Molnar, Daniel
Rawi, Anas Al
Payne, Mike
Surface wave transmission line theory for single and many wire systems
title Surface wave transmission line theory for single and many wire systems
title_full Surface wave transmission line theory for single and many wire systems
title_fullStr Surface wave transmission line theory for single and many wire systems
title_full_unstemmed Surface wave transmission line theory for single and many wire systems
title_short Surface wave transmission line theory for single and many wire systems
title_sort surface wave transmission line theory for single and many wire systems
topic Engineering
url https://dx.doi.org/10.1063/5.0059393
http://cds.cern.ch/record/2853281
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AT molnardaniel surfacewavetransmissionlinetheoryforsingleandmanywiresystems
AT rawianasal surfacewavetransmissionlinetheoryforsingleandmanywiresystems
AT paynemike surfacewavetransmissionlinetheoryforsingleandmanywiresystems