Title :
The use of FDTD for the analysis of magnetoplasma channel waveguides
Author :
Farias, Rubem Gonçalves ; Giarola, Attilio José
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Para, Brazil
fDate :
4/1/1998 12:00:00 AM
Abstract :
The finite-difference time-domain (FDTD) method is used for the analysis of magnetoplasma rectangular channel waveguides. Single and parallel-coupled waveguides are considered. The effect of varying the amplitude and the orientation of the bias magnetic field B0 on the dispersion characteristics of the first modes is examined. However, the FDTD formulation, does not excite evanescent modes for a sufficiently long time interval, particularly when in the presence of the propagating or dynamic modes. As a result, the nonreciprocal properties of these structures, primarily associated with the evanescent modes, could not be investigated
Keywords :
dispersion (wave); finite difference time-domain analysis; rectangular waveguides; semiconductor plasma; waveguide theory; FDTD formulation; bias magnetic field; dispersion characteristics; evanescent modes; finite-difference time-domain method; magnetoplasma channel waveguides; parallel-coupled waveguides; rectangular channel waveguides; Convolution; Dielectrics; Electromagnetic waveguides; Finite difference methods; Magnetic analysis; Maxwell equations; Rectangular waveguides; Semiconductor waveguides; Tensile stress; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
