A modified envelope-following approach to clocked analog circuit simulation

A modified envelope-following method for simulation of clocked analog circuits is described. The modification makes the envelope-following algorithm more efficient, as unnecessary numerical integration is avoided when computing the envelope of 'quasi-algebraic' components in the solution vector. An automatic method for determining the quasi-algebraic solution components is described, and experimental results are given which demonstrate that this modified method reduces the number of computer clock cycles needed to accurately determine the envelope.<
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