Title :
Transmission Lines for Continuous-Access Guided Communications in Mines and Tunnels
Author :
Rawat, V. ; Beal, J.C.
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, ON, Canada
Abstract :
A combined experimental and theoretical investigation of unorthodox transmission lines for continuous-access guided communications in mines and tunnels is described. A theoretical model for loose-braided coaxial cable with a contaminating layer of dirt is introduced and a novel experimental technique is discussed for measurements on such lines at VHP/UHF frequencies .
Keywords :
coaxial cables; mining; telecommunication transmission lines; tunnels; underground communication; VHP-UHF frequencies; continuous-access guided communications; loose-braided coaxial cable; mines; theoretical model; transmission lines; tunnels; Antenna measurements; Coaxial cables; Equations; Frequency measurement; Pollution measurement; Power cables; Surface waves; Transmission line measurements; Transmission line theory; Transmission lines;
Conference_Titel :
Microwave Symposium, 1972 IEEE GMTT International
Conference_Location :
Arlington Heights, IL
DOI :
10.1109/GMTT.1972.1123022
