Title :
An efficient 2-D FDTD algorithm using real variables (guided wave structure analysis)
Author :
Xiao, S. ; Vahldieck, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ, BC, Canada
fDate :
5/1/1993 12:00:00 AM
Abstract :
A two-dimensional finite-difference-time-domain (FDTD) method is proposed for the full-wave analysis of arbitrarily shaped guided wave structures. By using a phase shift beta Delta z along the z-direction (propagation direction), and assuming the limiting case of Delta z approaching zero, the propagation constant of hybrid modes is calculated using a two-dimensional mesh with a truly two-dimensional grid. When the field equation is multiplied by an additional factor j, only real variables are needed in the computation, leading to a very fast algorithm.<>
Keywords :
finite difference time-domain analysis; waveguide theory; 2D FDTD algorithm; field equation; finite-difference-time-domain; full-wave analysis; guided wave structures; hybrid modes; propagation constant; propagation direction; real variables; two-dimensional grid; two-dimensional mesh; Algorithm design and analysis; Central Processing Unit; Distributed parameter circuits; Electromagnetic fields; Electromagnetic waveguides; Equations; Finite difference methods; Frequency; Propagation constant; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
