An Improved Antenna Theory Model of Lightning Return Stroke Using a Distributed Current Source-Part I: Theory and Implementation

An improved antenna theory model (AT) approach in the frequency domain is presented for the electromagnetic analysis of the lightning return stroke channel. The lightning channel is modeled as a wire monopole antenna. Unlike the conventional AT models, which employ a voltage or current source locali...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on electromagnetic compatibility 2019-04, Vol.61 (2), p.381-390
Main Authors: Moini, Rouzbeh, Aghabarati, Ali, Fortin, Simon, Dawalibi, Farid P.
Format: Article
Language:English
Subjects:
Antennas
Computational modeling
Current distribution
Current sources
Distributed current source
Electric fields
Electric wire
Frequency domain analysis
Integral equations
Lightning
lightning return stroke modeling
lossy ground
Mathematical model
Maxwell equations
Method of moments
method of moments (MoM)
Monopole antennas
Multilayers
Soil
Time-domain analysis
Wave propagation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An improved antenna theory model (AT) approach in the frequency domain is presented for the electromagnetic analysis of the lightning return stroke channel. The lightning channel is modeled as a wire monopole antenna. Unlike the conventional AT models, which employ a voltage or current source localized at the channel base, the new model considers a distributed current source along the antenna. The implementation of appropriate phase shifts between consecutive current sources in the frequency domain accounts for the current wave propagation speed along the channel. Contrary to conventional AT models, the implemented methodology permits the establishment of an accurate propagation speed along the channel without the necessity to adjust the electrical parameters of the elements representing the channel. A solution of the electric field integral equation by the method of moments in the frequency domain is adopted for modeling the lightning channel and the nearby structures. The presence of multilayer soil is accounted by using Sommerfeld integrals. The implemented methodology enables an efficient analysis of lightning channel in the presence of a complex electromagnetic environment.
ISSN:0018-9375
1558-187X
DOI:10.1109/TEMC.2018.2830657