DocumentCode :
1262821
Title :
Transient electric and magnetic fields associated with establishing a finite electrostatic dipole, revisited
Author :
Rubinstein, Marcos ; Uman, Martin A.
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
Volume :
33
Issue :
4
fYear :
1991
fDate :
11/1/1991 12:00:00 AM
Firstpage :
312
Lastpage :
320
Abstract :
The authors reexamine the analysis of M.J. Master and M.A. Uman (1983), who derived and plotted the electromagnetic field waveforms generated by a square wave of current propagating with constant speed along a finite linear path, resulting in the formation of a finite electrostatic dipole. It was concluded that such a square pulse of current had charge only at its front and rear. The authors argue that errors were made in that analysis, correct these errors, and extend the overall analysis: (1) to show that the decomposition of the electromagnetic fields into electrostatic, induction, and radiation components on the basis of distance dependence is not general; (2) to demonstrate the use of the continuity equation in finding the charge distribution along a current path when the current distribution is known; and (3) to show how a seemingly simple analytical technique, the treatment of an abrupt step of current as a linearly rising current in the limit that the risetime goes to zero, can lead to erroneous results if there is not a good physical and mathematical understanding of all the variables involved
Keywords :
electric fields; electromagnetic field theory; electromagnetic induction; magnetic fields; transients; charge distribution; continuity equation; current distribution; current path; distance dependence; electromagnetic field waveforms; finite electrostatic dipole; finite linear path; induction components; linearly rising current; radiation components; square wave; transient electric fields; transient magnetic fields; Electromagnetic analysis; Electromagnetic fields; Electromagnetic propagation; Electromagnetic radiation; Electromagnetic transients; Electrostatic analysis; Error analysis; Error correction; Magnetic analysis; Magnetic fields;
fLanguage :
English
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9375
Type :
jour
DOI :
10.1109/15.99112
Filename :
99112
Link To Document :
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