Title :
A finite difference approach that employs an asymptotic boundary condition on a rectangular outer boundary for modeling two-dimensional transmission line structures
Author :
Gordon, Richard K. ; Fook, Set Hin
Author_Institution :
Dept. of Electr. Eng., Mississippi Univ., University, MS, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
The derivation of three asymptotic boundary conditions is presented. Techniques for implementing each of these on finite difference meshes with rectangular outer boundaries are discussed. Numerical results obtained using these boundary conditions in the finite difference analysis of both shielded and unshielded transmission lines are shown. The authors present detailed convergence studies on the use of each of these boundary conditions and discuss the memory requirements of each
Keywords :
finite difference methods; mesh generation; microstrip lines; shielding; waveguide theory; asymptotic boundary condition; finite difference approach; memory requirements; meshes; microstrip lines; rectangular outer boundary; shielded transmission lines; two-dimensional transmission line structures; unshielded transmission lines; Boundary conditions; Convergence; Dielectric substrates; Distributed parameter circuits; Equations; Finite difference methods; Finite element methods; Microstrip; Microwave circuits; Transmission lines;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
