DocumentCode
1238676
Title
Characteristics of Electromagnetic Guided Waves for Communication in Coal Mine Tunnels
Author
Mahmoud, Samir F.
Author_Institution
Carleton Univ., Ottawa, Ont., Canada
Volume
22
Issue
10
fYear
1974
fDate
10/1/1974 12:00:00 AM
Firstpage
1547
Lastpage
1554
Abstract
We obtain numerical results of the attenuation and phase constants of the lowest order modes in a rectangular tunnel with an axial wire for various values of physical parameters that are important in intramine communications and remote control. Besides the perturbed free modes of the empty guide, a TEM-like mode, which is highly influenced by the wire impedance and location, is identified. Also the excitation mechanisms of the modes are considered from the standpoint of point-to-point communication within a mine tunnel.
Keywords
Coal industry; Mining industry; Underground propagation; Waveguides; Artificial satellites; Attenuation; Coaxial cables; Communication system control; Cutoff frequency; Electromagnetic scattering; Mobile communication; Power cables; Radio frequency; Wire;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1974.1092093
Filename
1092093
Link To Document