extending moment computation to 2-port circuit representations
In this paper, we present an extension of moment computation to 2-port circuits. Our formulas are applicable to both transfer function moments and driving-point admittance moments. Given the input admittances, output admittances, and transfer functions of two 2-ports, our formulas compute the input admittance, output admittance, and transfer function when these 2-ports are combined either in parallel or in series. A nice conclusion of our work is the discovery our formulas form an elegant framework integrating the results from two classical papers, Rubinstein et al. & O'Brien and Savarino, for computing the Elmore delay and driving-point admittance moments in RC trees.
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