Title :
Analysis of microstrip discontinuities using the spatial network method with absorbing boundary conditions
Author :
Bica, Dorin ; Beker, Benjamin
Author_Institution :
Dept. of Electr. & Comput. Eng., South Carolina Univ., Columbia, SC
fDate :
7/1/1996 12:00:00 AM
Abstract :
In this paper it is shown that spatial network method (SNM) can be formally derived as a finite differencing scheme, which ensures that the necessary stability and convergence conditions are met. For the first time, Mur and Higdon second-order absorbing boundary conditions (ABC´s) have been used in conjunction with SNM. It has been found that the Higdon second-order ABC´s perform better than the Mur algorithm for guided wave problems with inhomogeneous substrates. Finally, it is shown that SNM can successfully be employed for the analysis of planar and three-dimensional (3-D) microstrip discontinuities in open or shielded environments
Keywords :
Maxwell equations; S-parameters; convergence of numerical methods; finite difference methods; microstrip discontinuities; microwave integrated circuits; shielding; 3D microstrip discontinuities; convergence conditions; finite differencing scheme; guided wave problems; inhomogeneous substrates; open environments; second-order absorbing boundary conditions; shielded environments; spatial network method; stability; Boundary conditions; Bridge circuits; Finite difference methods; Gallium arsenide; Integrated circuit interconnections; Microstrip; Optical waveguides; Sampling methods; Strips; Transmission line discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
