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A toolbox for the symbolic analysis and simulation of linear analog circuits

This paper presents a Matlab toolbox for the symbolic analysis and simulation of linear analog circuits. The simulator uses Modified Nodal Analysis (MNA) method to solve linear networks in the s-domain and exploits the Symbolic Math Toolbox for post-processing and numerical simulation. Starting from a SPICE-like netlist, the tool evaluates the circuit node voltages and the current in each independent voltage source. Algorithms for the simplification, with potential order reduction, of symbolic expressions were also developed. The tool is highly customizable and exploits the potentialities of Matlab environment for numerical simulations. A design example confirming the effectiveness of the proposed tool is given.