Title :
Impact of rough surface on Brillouin precursors in lossy and dispersive media using FDTD simulation
Author :
Chen, Penghui ; Xu, Xiaojian
Author_Institution :
Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing, China
Abstract :
Brillouin precursors are formed as an ultrawideband pulse propagates in lossy dispersive media. The impact of rough surface on Brillouin precursors is studied when a modulated rectangular pulse illuminates a one-dimensional rough surface of the lossy dispersive medium. Due to the interaction between the incident wave and the rough surface, the time delays and the signal waveforms are distinct at different horizontal locations for a specified depth. The impact of rough surface on Brillouin precursors is slighter than on the carrier waves. The impact is also related to the incident wave polarization.
Keywords :
electromagnetic pulse; finite difference time-domain analysis; polarisation; rough surfaces; Brillouin precursors; FDTD simulation; incident wave polarization; lossy dispersive media; lossy media; modulated rectangular pulse; one-dimensional rough surface; signal waveforms; time delays; ultrawideband pulse; Dispersion; Media; Monte Carlo methods; Rough surfaces; Scattering; Surface roughness; Surface waves; Brillouin precursor; dispersive media; lossy media; rough surface; wave propagation;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996688
