Title :
A three-dimensional finite-difference calculation of equivalent capacitances of coplanar waveguide discontinuities
Author :
Naghed, M. ; Wolff, I.
Author_Institution :
Dept. of Electr. Eng. & Sonderforschungsbereich, Duisburg Univ., West Germany
Abstract :
A finite-difference method is applied to three-dimensional multilayered shielded structures containing planar waveguide discontinuities. The electric field distribution inside the shielded structure is computed, and the equivalent capacitances of the discontinuities are determined. Open-ends and gaps in various coplanar waveguides with one- and two-layer substrates as well as more complicated structures like interdigitated capacitors are examined. The calculated results are in good agreement with accurate measurements and results from other methods.<>
Keywords :
capacitance; difference equations; electric fields; equivalent circuits; waveguide theory; 3D structures; coplanar waveguide discontinuities; electric field distribution; equivalent capacitances; gaps; interdigitated capacitors; multilayered shielded structures; open ends; single layer substrate; three-dimensional finite-difference calculation; two-layer substrates; Capacitance; Circuit testing; Coplanar transmission lines; Coplanar waveguides; Equations; Equivalent circuits; Finite difference methods; Planar waveguides; Transmission line discontinuities; Waveguide discontinuities;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99781
