Title :
Optimum mesh grading for finite-difference method
Author :
Heinrich, Wolfgang ; Beilenhoff, Klaus ; Mezzanotte, Paolo ; Roselli, Luca
Author_Institution :
Ferdinand-Braun-Inst., Berlin, Germany
fDate :
9/1/1996 12:00:00 AM
Abstract :
The coarseness error of the finite-difference (FD) method is studied analyzing a typical planar waveguide and a rectangular coaxial geometry. Results for equidistant and graded mesh are compared in terms of accuracy and numerical efforts. Because of the field singularities involved a graded mesh proves to be superior compared to the equidistant case. A grading strategy with optimum efficiency is presented. Furthermore, the results show that the most significant improvement in accuracy can be obtained by incorporating the edge behavior into the FD scheme
Keywords :
finite difference methods; planar waveguides; rectangular waveguides; waveguide theory; edge behavior; equidistant mesh; field singularities; finite-difference method; graded mesh; grading strategy; optimum efficiency; optimum mesh grading; planar waveguide; rectangular coaxial geometry; Coaxial components; Conductors; Differential equations; Electromagnetic waveguides; Finite difference methods; Geometry; Microwave theory and techniques; Planar waveguides; Rectangular waveguides; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
