Title :
Theoretical and experimental approach of the propagation at 2.5 GHz and 10 GHz in straight and curved tunnels
Author :
Lienard, M. ; Betrencourt, S. ; Degauque, P.
Author_Institution :
Dept. Electron., Lille I Univ., Villeneuve d´´Ascq, France
Abstract :
A narrowband and a wideband analysis of propagation in tunnels is presented. The theoretical approach is based on simple image theory and can only be applied for straight rectangular tunnels. Many experiments have thus been made in various tunnels to examine the influence of both the frequency and the tunnel curvature
Keywords :
UHF radio propagation; microwave propagation; tropospheric electromagnetic wave propagation; 10 GHz; 2.5 GHz; curved tunnels; narrowband analysis; simple image theory; straight rectangular tunnels; straight tunnels; wideband analysis; 3G mobile communication; Attenuation; Cables; Data communication; Frequency; Maintenance; Narrowband; Rail transportation; Shape; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797342
