Time-domain finite difference approach for the calculation of microstrip open-circuit end effect

It is shown that the time-domain-finite-difference (TD-FD) approach is capable of calculating microstrip end-effects over a large frequency range. A numerical example is calculated using an open-ended microstrip on alumina substrate. Plots of the time-domain fields are presented and the one-port scattering parameter is derived, establishing the validity of the TD-FD method in modeling circuit components for MMIC CAD (monolithic microwave integrated-circuit computer-aided design) applications.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>