Development Of A Graphical User Interface For An Analog Symbolic Simulator (GRASS) With Design Applications

A symbolic analog circuit simulator efficiently generates an analytic frequency response function in terms of all parameters in a linear circuit. This thesis presents the development and application of a graphical user interface (GUI) using OpenGL for a recently developed symbolic simulator, GRASS. It is demonstrated that by displaying the performance dependence on multiple parameters in a 3D surface, the designer can interactively select the parameter values satisfying the performance qualification meanwhile gain an intuitive confidence on the sensitivity property coming with the parameter selection. The GUI supported symbolic simulation tool provides the analog designers a new approach to robust design for achieving high yield.