Radiocommunication in tunnels
- 10 February 1972
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 8 (3) , 71-72
- https://doi.org/10.1049/el:19720051
Abstract
Two processes for the improvement of a bifilar line used as a support for propagation in an underground gallery are described. They consist in introducing networks on the line to bring about energy exchanges between the two propagation modes which characterise it.Keywords
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