DocumentCode :
900410
Title :
Simulation models of a dissipative transmission line above a lossy ground for a wide-frequency range. I. Single conductor configuration
Author :
Amore, Marcello D. ; Sarto, Maria Sabrina
Author_Institution :
Dipartimento di Energia Elettrica, Rome Univ., Italy
Volume :
38
Issue :
2
fYear :
1996
fDate :
5/1/1996 12:00:00 AM
Firstpage :
127
Lastpage :
138
Abstract :
The simulation model of a single conductor dissipative line above a lossy ground, based on the exact formulation of the Maxwell equations, is proposed for a wide frequency range. The transmission-line (TL) and fast-wave (FW) propagation constants of the line are computed by solving the modal equation coming from the continuity of the tangential component of the electric field at the air-wire interface. Three different expressions of the distributed line impedance and admittance are suggested with reference to different definitions of the line voltage. Moreover, logarithmic approximations of the Sommerfeld integrals are proposed in order to obtain an easy-to-implement formulation of the simulation models for use in computer codes. Comparisons between the proposed models and the Carson (1926) approach are carried out with reference to a single conductor line above a lossy earth, considering different values of the line geometrical parameters and ground conductivity and permittivity
Keywords :
Maxwell equations; approximation theory; digital simulation; earthing; electric admittance; electric fields; electric impedance; electrical conductivity; integral equations; permittivity; simulation; transmission line theory; Maxwell equations; Sommerfeld integrals; air-wire interface; computer codes; dissipative transmission line; distributed line admittance; distributed line impedance; electric field; fast wave propagation constant; geometrical parameters; ground conductivity; ground permittivity; line voltage; logarithmic approximations; lossy earth; modal equation; simulation models; single conductor configuration; transmission line propagation constant; wide frequency range; Computational modeling; Computer interfaces; Conductors; Frequency; Impedance; Integral equations; Maxwell equations; Propagation constant; Propagation losses; Transmission lines;
fLanguage :
English
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9375
Type :
jour
DOI :
10.1109/15.494615
Filename :
494615
Link To Document :
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