A comprehensive CAD approach to the design of MMICs up to mm-wave frequencies

A comprehensive computer-aided design (CAD) approach has been developed that forms the core of a layout-oriented, process-independent simulator for an MMIC (monolithic microwave integrated circuit) design engineering workstation (EWS). The CAD solutions developed and in progress for EWS are described. The solutions include a field-theory-based, high-resolution generator which produces the modal characteristics of complex MMIC microstrip structures. Another portion used as a support tool is a three-dimensional, hybrid-mode-based analysis package for discontinuities, nonelementary rectangular conductor patterns, and the analysis of coupling problems. Thus, the layout-oriented analysis and optimization scheme developed can handle interdigitated and spiral components as well as complex coding situations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>