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Theory of the radio-wave propagation in railway tunnels

✍ Scribed by Zhang, Y.P.; Hwang, Y.


Book ID
114556384
Publisher
IEEE
Year
1998
Tongue
English
Weight
359 KB
Volume
47
Category
Article
ISSN
0018-9545

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Propagation of UHF radio waves in trapez
✍ G. X. Zheng; J. H. Sheng; Y. P. Zhang πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 88 KB πŸ‘ 1 views

Measurements of the propagation of UHF radio wa¨es in two trapezoidal tunnels are reported. Values of propagation loss in dBr100 m are gi¨en. It is found that the propagation attenuates at least 900 MHz. In addition, a portable FM radio system operating at 900 MHz is tested in one tunnel. It achie¨e