Title :
Theory of millimeter-wave propagation in railway trains
Author :
Zhang, Y.P. ; Ching, P.C. ; Hwang, Y.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
Millimeter-waves have found applications for communication and control in modern railway operations. This paper concentrates on characterizing millimeter-wave propagation in trains. For this purpose, an oversized imperfect periodically loaded rectangular waveguide is proposed, and the surface impedance approximation is adopted to formulate the problem. The closed-form propagation constants for those important TSMq,m0, modes are obtained. The numerical results for the propagation attenuation of the dominant TSM1,10 mode are presented, and the influence of passengers on propagation is discussed
Keywords :
millimetre wave propagation; railways; rectangular waveguides; waveguide theory; 18 to 60 GHz; TSMq,m0, modes; closed-form propagation constants; dominant TSM1,10 mode; imperfect periodically loaded rectangular waveguide; millimeter-wave propagation; numerical results; oversized waveguide; passengers influence; propagation attenuation; railway trains; surface impedance approximation; Attenuation; Communication system control; Loaded waveguides; Millimeter wave communication; Millimeter wave propagation; Propagation constant; Rail transportation; Rectangular waveguides; Surface impedance; Surface waves;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686630
