Journal of Siberian Federal University. Engineering & Technologies / Electrodynamic Parameters of a Coaxial Cable at Bipolar Pulses Propagation

Full text (.pdf)
Issue
Journal of Siberian Federal University. Engineering & Technologies. 2020 13 (1)
Authors
Bulbik, Yanis I.; Zograf, Fedor G.
Contact information
Bulbik, Yanis I.: Siberian Federal University Krasnoyarsk, Russian Federation; Zograf, Fedor G.: Siberian Federal University Krasnoyarsk, Russian Federation;
Keywords
surface current density; field penetration depth; apparent conduction; initial and boundary conditions; Bessel functions; Fourier series and field harmonics
Abstract

All-in-interworking technology, based on IEEE 802.3 standard, was mainly developed for the separable media cabling and data transmission speed increase. Although the high-speed networking is already provided by a fiber optic cable, coaxial guides are in demand for similar applications. Time-domain analysis is undertaken to estimate electrodynamic states of inner and outer guiding conductors at periodic bipolar pulses propagation on a coaxial cable. An electric current density distribution on the cross-section of the inner conductor is obtained from a solution of Maxwell equations under periodic boundary conditions that are prescribed by a product of two functions. The first one is introduced implicitly for a profile of surface current density in the axial direction, while the other determines this profile transient states. As for shielding braid, which is the cable outer conductor, its current density distribution is derived from an analysis of field harmonics that penetrate into conductive subsurface layers under similar boundary conditions. It is also shown that prescribed implicative boundary conditions for both conductors allow to obtain, at least under auxiliary assumption, some completed formulae useful to the estimation of the pulses duration admissible decrease at their transmission on the coaxial cable. The paper contains some comparative and numerical results as well

Pages
25-37
DOI
10.17516/1999-494X-0203
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/134936

Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).