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Title

Changes in signal transmission speed in coaxial cables through regulating the foam structure of the polyethylene dielectric section

Year: 1400
COI: JR_POJ-8-1_005
Language: EnglishView: 130
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Authors

Milad Moradian - Mechanical Engineering Department, Faculty
Taher Azdast - Mechanical Engineering Department, Faculty
Ali Doniavi - Mechanical Engineering Department, Faculty

Abstract:

Polyolefins have been widely used in the electrical insulation and cable industry in recent years. One of the main usages of these materials is dielectric insulation in coaxial cables. Low attenuation and high signal transmission speed are among the desired features in coaxial cables. The role of polyethylene foam on signal transmission speed in the coaxial cables is the main focus of this study. In the present study, the velocity factor of coaxial samples with different dielectric structures is investigated in both theoretical and experimental approaches. In theoretical formulation, only the void fraction of foam is taken into consideration and other foam properties such as cell density, cell size, and foam structure are neglected. This is the reason for the difference observed between theoretical and experimental results. In theoretical results, a linear increase in the velocity factor is witnessed with the increase of the void fraction while in experimental results there are some exceptions. The foaming degree of the samples was reached 63% causing a 37.7% decrease in theoretical relative permittivity and consequently a 26.8% increase in theoretical velocity factor. On the other hand, up to 36% increase is observed in the experimentally measured velocity factor of foamed dielectric samples compared to the samples with solid polyethylene dielectric.

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Paper COI Code

This Paper COI Code is JR_POJ-8-1_005. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1146146/

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If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Moradian, Milad and Azdast, Taher and Doniavi, Ali,1400,Changes in signal transmission speed in coaxial cables through regulating the foam structure of the polyethylene dielectric section,https://civilica.com/doc/1146146

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COI stands for "CIVILICA Object Identifier". COI is the unique code assigned to articles of Iranian conferences and journals when indexing on the CIVILICA citation database.

The COI is the national code of documents indexed in CIVILICA and is a unique and permanent code. it can always be cited and tracked and assumed as registration confirmation ID.

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