Title :
Dispersion relation and similarity transform of electromagnetic waveguide
Author_Institution :
Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA
Abstract :
The dispersion relation between the frequency and the propagation constant in a waveguide structure is discussed. Deduced by dimensional analysis, the functional dependency of the geometrical parameters in the dispersion relation is derived. The results inspire the concept of a similarity transform. Applying this transformation together with the two-dimensional finite difference time domain solver, the linear region of the quasi-TEM branch of the dispersion relation can be computed with an enhanced resolution and a reduced computation time.
Keywords :
dispersion relations; finite difference time-domain analysis; waveguide theory; 2D FDTD; dimensional analysis; dispersion relation; finite difference time domain; functional dependency; geometrical parameters; propagation constant; quasi-TEM branch; similarity transform; waveguide structure; Dielectric substrates; Dispersion; Electromagnetic scattering; Electromagnetic waveguides; Finite difference methods; Force sensors; Frequency; Microstrip; Optical waveguides; Propagation constant;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.960152
