Title :
Comparison Identities for Wave Propagation in a Time-Varying Plasma Medium
Author :
Kalluri, Dikshitulu K. ; Chen, Jinming
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Massachusetts Lowell, Lowell, MA, USA
Abstract :
An unbounded space-invariant but time-varying medium conserves the wave number k of the wave but alters the frequency of the wave. Thus a switched medium acts like a frequency transformer, the frequencies of the newly created waves (output waves) are easily computed. The amplitudes of the output waves depend on the rise time Tr of the profiles of the parameters of the switched medium.
Keywords :
plasma electromagnetic wave propagation; frequency transformer; output wave; output wave amplitude; rise time; space-invariant medium; switched medium; time-varying plasma medium; unbounded medium; wave frequency; wave number; wave propagation; Boundary value problems; Computer aided software engineering; Dielectrics; Electromagnetics; Frequency; Laboratories; Medical services; Nonuniform electric fields; North America; Plasma properties; Plasma sources; Plasma waves; Amplitudes of frequency-shifted waves; comparison identities; finite rise time; time-varying medium; wave propagation;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2027080
