Title :
The left-handed wave inside natural materials
Author :
Tian, Yubo ; Qian, Jian ; Lu, Junfeng ; Guo, Wenfeng
Author_Institution :
Dept. of Electron. Sci. & Eng., Nanjing Univ., China
fDate :
Oct. 28 2003-Nov. 1 2003
Abstract :
In terms of genetic algorithm (GA) and a parameter tracking scheme (PTS), the propagating constants of a waveguide filled with dissipative magnetic substances are accurately calculated and thoroughly analyzed. The practical results show the method is efficient and accurate. Moreover, it is found during the calculating that under certain conditions, the phase constant may be negative, which revealed that the wave propagating inside this waveguide possess the characteristic of that of the left-handed wave (LHW). It is of significance that the LHW may present in nature materials.
Keywords :
genetic algorithms; magnetic materials; waveguide theory; dissipative magnetic substances; genetic algorithm; left-handed wave; parameter tracking scheme; phase constant; Algorithm design and analysis; Dielectric materials; Eigenvalues and eigenfunctions; Equations; Genetic algorithms; Magnetic analysis; Magnetic fields; Magnetic materials; Slabs; Waveguide components;
Conference_Titel :
Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 6th International SYmposium on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-7831-8
DOI :
10.1109/ISAPE.2003.1276798
