A Novel CAD Tool and Concept Compatible with the Requirements of Multilayer GaAs MMIC Technology

An efficient field-theoretical tool applicable to a broad class of passive circuit structures has been developed as a CAD kernel component for multilayer GaAs MMIC design. It is based on a new, enhanced spectral domain technique (ESDT) which results in a reduction of CPU-times by one or two orders of magnitude compared to the conventional spectral domain approach. The field-theoretical package can be used, therefore, to generate multidimensional lookup tables in the frame of a general purpose linear CAD program. Together with the associated CAD concept and interpolation technique, the new tool constitutes a shift away from analytical models obtaining improvements with respect to generality, reliability of prediction, accuracy and even efficiency.