An heuristic circuit-generation technique for the design-automation of analog circuits

An heuristic method to generate the topology of analog circuits at the most abstract level of design, is introduced. The generation approach is divided into two steps: the small-signal and bias-circuitry levels of design. The f irst step is focused on coupling four-nullators and four-norators bridges. The second step is focused on biasing nullator-norator pairs. The nullors in the generated circuit are synthesized furtherly by replacing them using either BJTs or MOSTs. Several examples demonstrate the suitability of the proposed technique to be used within an environment of analog design automation.