Title :
Waveguide propagation of electromagnetic step signal
Author :
Nikitskiy, Sergey B. ; Tretyakov, Oleg A. ; Yemelyanov, Konxtantin M.
Author_Institution :
Dept. of Theor. Radio Phys., Kharkov State Univ., Ukraine
Abstract :
Propagation of the transient electromagnetic field in a waveguide with the perfectly conducting surface of arbitrary cross-section and filled with a lossy medium is considered. The time domain method of waveguide evolutionary equations has been used, and original initial-boundary value vector problem for Maxwell´s equations has been reduced to integrating of the one-dimensional Klein-Gordon scalar equation. Its solution is obtained as an expansion in terms of a suitable for time domain method basic set. The expansion coefficients are readily derived through the same decomposition of the input signal. Analytical forms of early- and late-time approximations for propagating electromagnetic signal are presented, and the validity conditions for the explicit formulas are discussed
Keywords :
Maxwell equations; absorbing media; approximation theory; electromagnetic fields; electromagnetic wave propagation; evolutionary computation; initial value problems; time-domain analysis; transients; waveguide theory; 1D Klein-Gordon scalar equation; Maxwell´s equations; arbitrary cross-section; early-time approximation; electromagnetic step signal; expansion coefficients; explicit formulas; initial-boundary value vector problem; input signal decomposition; late-time approximation; lossy medium; perfectly conducting surface; time domain method; transient electromagnetic field; validity conditions; waveguide evolutionary equations; waveguide propagation; Electromagnetic analysis; Electromagnetic fields; Electromagnetic propagation; Electromagnetic scattering; Electromagnetic transients; Electromagnetic waveguides; Maxwell equations; Propagation losses; Signal analysis; Surface waves;
Conference_Titel :
Electrotechnical Conference, 1998. MELECON 98., 9th Mediterranean
Conference_Location :
Tel-Aviv
Print_ISBN :
0-7803-3879-0
DOI :
10.1109/MELCON.1998.692387