Unified nodal analysis of electronic circuits

A circuit simulator has been developed on basis of Unified Nodal Analysis (UNA). It outperforms simulators with Modified Nodal Approach and Tableau formulation in that the initial-state and steady-state responses are generated from the UNA equations without transient analysis and transient simulations can be carried out from the UNA equations even for circuits with capacitor loops and inductor cutsets that cause singularity in the MNA equations. UNA's efficiency and accuracy are illustrated with an example circuit that fails most of the existing circuit simulators.