Title :
Guided electromagnetic waves in gyrotropic chirowaveguides
Author :
Wenyan, Yin ; Wenbing, Wang ; Pao, Li
Author_Institution :
Dept. of Electron. Eng., Northwestern Polytech. Univ., Xian, China
fDate :
11/1/1994 12:00:00 AM
Abstract :
The propagation characteristics of hybrid modes in the circular cylindrical and coaxial line gyrotropic chirowaveguides are studied using the technique of separation variables. First, the transverse components of electric and magnetic fields are expressed in terms of the longitudinal components of E and H¯. Then, numerical results are presented for the dispersion behavior and cut-off frequencies as well as the field distributions of hybrid EH0,1 and HEn,1, with the effects of different electromagnetic parameters of gyrotropic chiral material taken into consideration. It is shown that the process of mode bifurcation also takes place in the gyrotropic chirowaveguides; this is similar to the cases of reciprocal chirowaveguides. But, gyrotropic chirowaveguides are nonreciprocal bianisotropic devices
Keywords :
bifurcation; chirowaveguides; circular waveguides; coaxial waveguides; dispersion (wave); electromagnetic wave propagation; waveguide theory; circular cylindrical chirowaveguides; coaxial line chirowaveguides; cutoff frequencies; dispersion behavior; electromagnetic parameters; field distributions; guided EM waves; gyrotropic chiral material; gyrotropic chirowaveguides; hybrid modes; mode bifurcation; nonreciprocal bianisotropic devices; propagation characteristics; separation variables technique; Bifurcation; Coaxial components; Cutoff frequency; Dispersion; Electromagnetic fields; Electromagnetic propagation; Electromagnetic scattering; Gyrotropism; Helium; Magnetic fields;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
